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MCP3204-CI/ST

MCP3204-CI/ST - 12-Bit 4-Channel SAR ADC | Microchip

Microchip MCP3204-CI/ST is a 12-bit, four-channel successive approximation register analog-to-digital converter with an SPI serial interface, a 100 ksps sampling rate, and a 14-pin TSSOP package. The automotive-qualified device is designed for embedded control applications requiring compact multichannel data acquisition and low-power operation. An analog-to-digital converter, or ADC, converts continuous analog voltage signals into digital values that a microcontroller or other digital controller can process. The MCP3204 belongs to the SAR ADC family, whose successive approximation architecture compares the input voltage with a internally generated reference through a successive sequence of conversion steps. Its SPI interface reduces the number of signal connections required for transferring conversion results. The MCP3204-CI/ST provides four analog input channels, 12-bit conversion resolution, and a 100 ksps conversion rate in a 14-pin TSSOP package. Its operating supply voltage begins at 2.7 V, making it appropriate for embedded systems that cannot support a 5 V-only analog interface. The automotive qualification indicated for this ordering code supports its use in vehicle-oriented electronic control systems when the complete system requirements are satisfied. The SPI interface supports integration with microcontrollers, programmable controllers, and data-acquisition systems. Four analog inputs allow one converter to serve multiple sensors or conditioned analog signals while avoiding the footprint and component count of four unrelated converter packages. The 12-bit result provides 4,096 discrete codes across the selected input range, while the 100 ksps rate supports rapidly changing measurements when the acquisition and signal-conditioning path are designed appropriately. Typical uses include automotive sensor acquisition, industrial control systems, battery and power monitoring, laboratory data acquisition, and embedded instrumentation. The converter can be paired with analog front-end circuits, voltage references, op-amp signal-conditioning stages, and SPI-capable microcontrollers. Its low-voltage operation and compact TSSOP outline are useful where board area, energy use, and deterministic serial communication are important. The principal design considerations are reference quality, input-range configuration, source impedance, acquisition timing, and SPI clocking. Input signals must remain within the selected analog range, and the sampling network should present sufficiently low impedance to the converter's sample-and-hold input. PCB traces should be kept short, reference connections stable, and digital return currents controlled to minimize conversion errors. This product page combines the manufacturer description with distributor and cross-reference information to summarize the MCP3204-CI/ST's resolution, channel count, sampling rate, interface, package, application fit, and replacement considerations. It also provides engineering-focused guidance for PCB layout, signal conditioning, and component selection.

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MCP3208-BI/P

MCP3208-BI/P - 12-Bit 8-Channel SAR ADC | Microchip

The Microchip Technology MCP3208-BI/P is a 12-bit successive-approximation-register analog-to-digital converter with eight input channels, one SPI serial interface, and a 16-pin PDIP package. It operates from a 2.7 V supply and is designed for embedded-control systems that need multiple analog inputs measured by a microcontroller or other SPI host. An ADC is a data-conversion IC that transforms an analog voltage into a digital code. The MCP3208 belongs to the SAR ADC family within analog-to-digital converters, interface ICs, and the broader semiconductor hierarchy. Its internal sample-and-hold circuitry acquires the input voltage before successive approximation converts that voltage into a 12-bit result. The SPI interface allows sampled measurements to be transferred efficiently between the converter and a digital controller. Key features include 12-bit conversion resolution, eight single-ended input options, and SPI communication. The verified product information identifies four differential input channels, eight single-ended inputs, one SAR conversion engine, and a 2.7 V operating supply. These characteristics make the device useful when an embedded design must monitor multiple sensors, potentiometers, or analog control signals without using a separate ADC for every channel. The MCP3208-BI/P uses the BI temperature grade, which the verified distributor information associates with an operating range of -40°C to +85°C. Its 16-pin PDIP package favors through-hole construction, reworkability, and educational or industrial control boards where a socket or conventional plated through-hole footprint is useful. Because it is a multiplexed converter, the selected channel determines which analog input is connected to the internal sample-and-hold circuit during conversion. Typical applications include industrial process monitoring, environmental sensor acquisition, laboratory measurement interfaces, audio and control-signal digitization, and embedded instrumentation. In these systems, the microcontroller initiates a conversion by writing channel and configuration commands over SPI, waits for the sample-and-hold and conversion sequence, and then reads the 12-bit result. A multiplexed architecture reduces package size, although channel switching means conversions are sequential rather than simultaneous. When designing around the MCP3208-BI/P, verify the analog input range against the selected reference voltage and confirm that the SPI host uses the required clocking and chip-select behavior. Reference and analog-ground routing are critical because ADC accuracy depends on the quality of the voltage reference and the analog signal path. The 16-pin PDIP package also requires adequate through-hole spacing and mechanical clearance in compact production equipment. This product page combines the verified Microchip and distributor specifications with package, application, sourcing, and design context. It also distinguishes verified drop-in replacements from merely similar ADC functions, preventing a functional substitute with a different package from being presented as a PCB-compatible alternative.

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MCP3208-BI/SL

MCP3208-BI/SL - 12-Bit 8-Channel SPI ADC | Microchip

The Microchip Technology MCP3208-BI/SL is a 12-bit, 8-channel successive approximation register analog-to-digital converter with a 100 ksps maximum sampling rate, configured for 4 differential or 8 single-ended inputs and housed in a 16-pin SOIC package. It combines an SPI serial interface, programmable input configuration, and low-power operation for embedded control, industrial measurement, and sensor-acquisition systems. An ADC is a data-conversion IC that converts an analog voltage into a digital code for processing, logging, display, or closed-loop control. The MCP3208 belongs to the ADC → data-converter IC → semiconductor hierarchy. Its SAR architecture repeatedly compares the sampled input with an internal reference to produce a 12-bit result. This makes it suitable for adding general-purpose analog measurement to a microcontroller that does not include enough onboard ADC channels. The converter provides eight analog input channels that can be used as eight single-ended inputs or four pseudo-differential input pairs. Maximum differential nonlinearity is ±1 LSB and maximum integral nonlinearity is ±2 LSB for the MCP3208. The SPI interface supports modes 0,0 and 1,1, while the input structure includes an onboard sample-and-hold circuit. These features balance useful conversion resolution with a straightforward host-controller interface. MCP3208-BI/SL operates from a 2.7 V supply, and its analog reference and digital interface support embedded-system integration. The SPI interface transfers the 12-bit conversion result while minimizing pin count compared with a parallel ADC. The 16-SOIC package has a 3.90 mm body width and supports industrial temperature operation from -40°C to +85°C, making it appropriate for compact control boards requiring analog inputs beyond the capabilities of the host MCU. Typical uses include temperature-sensor monitoring, potentiometer position acquisition, current and voltage measurement, industrial panel controls, and multichannel data acquisition. Differential channels can improve rejection of common-mode voltage when paired with suitable sensor circuitry. The 100 ksps rate supports rapidly changing analog signals, although each conversion is initiated and read through the SPI interface. Design the analog and digital sections to minimize noise and ground currents. Place the decoupling and reference components near the converter, route SPI signals away from sensitive analog inputs, and account for reference accuracy when calculating overall measurement error. For battery-powered systems, verify the selected conversion rate and shutdown behavior against the available current budget.

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MCP3208-CI/P

MCP3208-CI/P - 12-Bit 8-Channel SAR ADC | Microchip

The Microchip Technology MCP3208-CI/P is a 12-bit, eight-channel successive approximation analog-to-digital converter with a 100 ksps sampling rate, 2.7 V to 5.5 V supply range, and SPI interface in a 16-pin PDIP package. It converts four single-ended or eight pseudo-differential analog inputs through programmable input channels, while its sample-and-hold circuitry supports embedded measurement and control systems. An analog-to-digital converter is an ADC, a semiconductor that translates an analog voltage into a digital code. The MCP3208 belongs to the SAR ADC family, using a successive approximation register to acquire one conversion result through successive comparison steps. In the system hierarchy, it is an ADC, data-acquisition IC, embedded-control peripheral, and semiconductor. Key features include 12-bit resolution, eight analog input channels, four pseudo-differential input pairs, a 100 ksps maximum sampling rate, and SPI communication. The manufacturer datasheet describes single-ended or pseudo-differential input programmability, allowing the same device to serve applications with different channel arrangements. Its 2.7 V to 5.5 V operating range supports low-voltage embedded systems and conventional 5 V industrial interfaces. The SAR architecture is appropriate when deterministic sampling, modest resolution, and serial integration are more important than very high throughput. The SPI interface allows a microcontroller to command conversions and read results, while the 16-pin PDIP package supports through-hole prototyping, legacy industrial boards, and designs where a socket or hand-soldered installation is useful. Typical standby and active currents are approximately 500 nA and 320 uA, respectively. Typical applications include industrial process monitoring, environmental sensors, temperature and pressure measurement, laboratory instrumentation, embedded data acquisition, and low-voltage control systems. The SPI bus should be configured for the intended clock and chip-select behavior, and analog inputs must remain within the device's specified voltage limits. For new high-density designs, SOIC variants may be preferable, but the MCP3208-CI/P is specifically the PDIP package. The main design trade-off is throughput and resolution rather than ultra-high precision: 100 ksps and 12-bit resolution are adequate for many control and measurement tasks but may not satisfy demanding instrumentation. This page combines verified Microchip specifications, package information, sourcing references, and application-oriented design guidance.

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MCP3208-CI/SL

MCP3208-CI/SL - 12-Bit 8-Ch SAR ADC, SPI, SOIC-16 | Microchip

The Microchip Technology MCP3208-CI/SL is a 12-bit, 8-channel successive approximation register (SAR) analog-to-digital converter (ADC) with an SPI-compatible serial interface, housed in a 16-pin SOIC (SL) package. Operating from a single 2.7V to 5.5V supply, it delivers up to 100 ksps throughput and integrates 8 input channels that can be software-configured as either 8 single-ended inputs or 4 pseudo-differential pairs. An analog-to-digital converter is a mixed-signal integrated circuit that converts a continuous-time, continuous-amplitude voltage on its input pin into a discrete digital code at its output. SAR ADCs in particular use a binary-search algorithm with an internal sample-and-hold and capacitive DAC to converge on the input voltage in N conversion cycles (N = number of bits). SAR converters sit within the broader ADC family alongside delta-sigma (high-resolution, low-speed) and pipeline ADCs (very-high-speed, multi-Msps), and are favored for low-latency, moderate-resolution sampling in embedded systems where determinism and simple serial interfacing matter more than ultimate resolution. Key features include ±1 LSB maximum DNL, ±1 LSB maximum INL, low power consumption of 5 nA standby current and 0.5 mA typical active current at 5V, and an industrial-grade operating temperature range of -40 C to +85 C. The SPI interface uses a standard 4-wire arrangement (CS, DIN, DOUT, CLK), is compatible with 8-bit serial protocols, and supports daisy-chaining of multiple devices on the same bus. The device combines a track-and-hold input stage with a successive-approximation core and on-chip clock. The pseudo-differential input mode provides improved common-mode rejection for bridge sensors and thermocouple interfaces, while single-ended mode maximizes channel count for general-purpose monitoring of 8 separate analog signals. Typical applications include factory automation sensor multiplexing, battery monitoring in portable instruments, data acquisition front-ends for HVAC controllers, and robotics joint position sensing. The SOIC-16 wide-body package simplifies hand-prototyping and is widely accepted by contract assemblers. When designing with the MCP3208, ensure VDD is well-decoupled with a 1 uF ceramic capacitor placed within 5 mm of the AVDD pin, and that the analog input source impedance stays below 1 kohm to avoid converter gain errors. Note that -CI versions are specified over -40 C to +85 C, while -BI versions extend to -40 C to +125 C. This page synthesizes real-time distributor pricing, drop-in alternatives from the same Microchip SAR ADC family, and application notes not collated in the standalone datasheet, helping you evaluate whether MCP3208-CI/SL is the right ADC for your 8-channel embedded design.

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MCP3301-BI/MS

MCP3301-BI/MS - 13-Bit Differential SPI ADC | Microchip

The Microchip Technology MCP3301-BI/MS is a 13-bit successive-approximation analog-to-digital converter with one fully differential input channel, a 100 ksps conversion rate, and an SPI-compatible serial interface. It operates from a single 5.5 V supply and is packaged in an 8-MSOP for compact analog measurement systems. The -BI/MS ordering identifies the industrial temperature grade and MSOP package format used in the MCP3301 family. An analog-to-digital converter is an integrated circuit that converts a continuous voltage at an analog input into a numeric code for processing, control, display, or data logging. The MCP3301 belongs to the SAR ADC hierarchy, where a sample-and-hold circuit and internal comparator successively resolve the input voltage. Its differential architecture measures the voltage between the AIN0+ and AIN0- pins, which helps reject common-mode noise when the sensor output is referenced to a shared ground. Key device characteristics include 13-bit resolution, a maximum conversion throughput of 100 ksps, full differential input capability, an SPI serial interface, and single-supply operation from a 5.5 V maximum supply. The datasheet also specifies differential nonlinearity and integral nonlinearity limits of plus or minus 1 LSB for the MCP3301 grade. Its compact 8-MSOP footprint suits battery-powered instruments and remote data-acquisition nodes where board area and standby power are important. The conversion core uses a sample-and-hold architecture, while the serial interface supports serial input and output functions on shared clock and data pins. The device accepts an external reference voltage, allowing measurement accuracy to be scaled to the analog signal chain. Because the MCP3301 has one differential channel rather than multiple single-ended inputs, channel multiplexing is not required, and differential source impedance should remain balanced for best performance. Typical applications include battery-powered environmental sensors, industrial pressure and temperature transmitters, remote process-monitoring nodes, laboratory measurement instruments, and low-power data loggers. The SPI interface makes the converter suitable for designs using a microcontroller with a dedicated or general-purpose serial controller. The main design consideration is the relationship between reference accuracy, source impedance, and digital noise coupling. Place the reference and analog input traces away from high-current switching paths, use a quiet reference source, and follow the manufacturer datasheet layout and bypass recommendations. Verify acquisition timing in firmware because each conversion requires a sample period followed by bit transfer over the serial interface. This page combines the Microchip product information and datasheet with package details, purchasing guidance, comparison parameters, and practical integration notes that help engineers evaluate the MCP3301-BI/MS for low-power precision measurement designs.

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MCP3301-BI/P

MCP3301-BI/P - 13-Bit 100 kSPS SPI ADC | Microchip Technology

The Microchip Technology MCP3301-BI/P is a 13-bit, single-channel SAR analog-to-digital converter with one differential input, a 100 kSPS conversion rate, and an SPI serial interface in an 8-pin PDIP package. It operates from a 4.5 V to 5.5 V single supply and is specified over -40°C to +85°C. An ADC is an analog-to-digital converter, a semiconductor that samples a continuous voltage and converts it into a numerical value for processing by a microcontroller or other digital controller. The MCP3301 belongs to the SAR ADC, ADC, data-converter IC, and power-management-adjacent signal-conversion hierarchy. Its fully differential input can reject common-mode noise when the source is arranged around a biased reference voltage. Key features include 13-bit resolution, a 100 kSPS maximum sampling rate, and ±1 LSB maximum differential nonlinearity. The B-grade MCP3301-BI/P has a maximum integral nonlinearity of ±2 LSB. Its SPI interface provides a straightforward connection to embedded processors, while single-supply operation simplifies system power planning for industrial, battery-powered, and remote data-acquisition equipment. The device uses a successive-approximation conversion architecture. Each conversion determines the unknown input through a sequence of internal comparisons, after which the result is transferred through the serial interface. The differential input architecture is useful when the measured signal is small relative to the ADC supply. Biasing both inputs near the midpoint of the input range improves use of the available code range, while keeping their differential voltage within the converter's permitted input range. Typical applications include battery-powered environmental sensors, industrial pressure or temperature acquisition, remote monitoring, laboratory measurement equipment, and embedded control systems. The 100 kSPS rate is suitable for continuously changing analog measurements that do not require high-rate waveform capture, and the differential input can simplify front-end design for bridge sensors and small-signal transducers. Designers should provide a stable reference voltage, bypass the supply close to the device, and maintain the analog input voltage within the operating range. The SPI clock, chip-select, and digital output timing must satisfy the manufacturer datasheet, and unused input and reference pins must be connected according to its recommended application circuit. This page consolidates verified manufacturer and distributor information, package-level alternatives, interface guidance, and application-specific selection context. It is intended to help engineers locate the datasheet, compare interchangeable variants, plan a PCB layout, and assess whether the MCP3301-BI/P fits a precision, low-power measurement design.

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MCP3301-CI/P

MCP3301-CI/P - 13-Bit 100ksps Diff ADC with SPI | Microchip

The Microchip Technology MCP3301-CI/P is a 13-bit differential-input, low-power successive-approximation-register (SAR) analog-to-digital converter (ADC) with an industry-standard SPI serial interface, housed in an 8-pin PDIP through-hole package. The converter achieves up to 100 ksps sampling rate over a 4.5V to 5.5V single supply, with differential inputs that allow the full-scale input range to be referenced to a user-supplied voltage between 400 mV and 5V, yielding an input-referred resolution range between approximately 98 uV (at 0.4V VREF) and 1.22 mV (at 5V VREF). An SAR ADC is a successive-approximation-register analog-to-digital converter, the dominant topology for medium-speed, medium-resolution precision conversion in microcontroller-based systems. SAR ADCs sit within the broader ADC taxonomy (Flash, SAR, Delta-Sigma, Dual-Slope) and are preferred where deterministic latency, low power consumption, and ease of microcontroller interface are required - exactly the trade-off space the MCP3301 targets. Key features include true differential inputs with low integral nonlinearity, an external VREF input that scales input range dynamically, an SPI-compatible serial output that simplifies connection to virtually any microcontroller, and very low power consumption - typically 50 nA standby and 300 uA active. The 8-pin PDIP through-hole format supports easy prototyping, breadboarding, and legacy industrial designs where surface-mount is undesirable. Architecturally, the MCP3301 combines a differential input sample-and-hold front-end, a precision SAR core clocked from an internal oscillator, and a discrete SPI output shift register. The combination produces one conversion per chip-select cycle, deterministic sampling instant, and intrinsic single-cycle latency - ideal for multiplexed sensor arrays and digital control loops. Typical applications include battery-powered remote sensor nodes, industrial process control loops, portable instrumentation, multi-channel thermocouple or load-cell digitizers (paired with external multiplexers), and embedded data-acquisition front-ends for HVAC and energy-metering systems. When designing with this part, remember to include a 0.1 uF decoupling capacitor close to the AVDD pin and to keep CS low during a full 13-clock conversion - releasing CS mid-frame will corrupt the output. The external VREF source must be low-noise to fully benefit from the 13-bit resolution. This page synthesizes distributor pricing, drop-in PDIP alternatives, and practical design notes not found in the manufacturer datasheet alone.

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MCP3301-CI/SN

MCP3301-CI/SN - 13-Bit Low-Power SPI ADC | Microchip Technology

The Microchip Technology MCP3301-CI/SN is a 13-bit, one-channel, differential-input successive-approximation analog-to-digital converter with an SPI serial interface, conversion rate up to 100 ksps, and an 8-pin SOIC package. Its low active current of 300 µA and standby current of 50 nA make it suitable for battery-powered instrumentation and remote data-acquisition systems. An analog-to-digital converter is an interface IC that converts a continuous analog voltage into a numeric value for processing, storage, or transmission. The MCP3301 belongs to the successive-approximation ADC hierarchy, which repeatedly compares the input against an internal DAC until its output matches the analog voltage. A differential ADC measures the voltage between two inputs, allowing common-mode voltage to be rejected when the source is balanced around a common return or reference. The converter supports a 4.5 V to 5.5 V supply range and can perform conversions at up to 100 ksps. Its reference voltage can be varied from 400 mV to 5 V. As a result, the input-referred resolution ranges from 98 µV with a 400 mV reference to 1.22 mV with a 5 V reference. The ±1 LSB maximum differential nonlinearity and ±2 LSB maximum integral nonlinearity identified for the -C version characterize the converter’s transfer accuracy. The SPI interface provides a familiar connection to microcontrollers, and the converter can remain in a low-current standby state between measurements. The single differential channel is appropriate for bridge sensors, current-shunt measurements, battery monitoring, temperature sensing, and other systems where preserving signal polarity and rejecting common-mode disturbance are important. The small 8-pin SOIC package also simplifies compact analog acquisition boards. Typical uses include low-power environmental sensors, industrial pressure and temperature acquisition, portable instrumentation, remote telemetry, and precision analog measurement. The 100 ksps rate supports faster measurement loops than a low-speed meter-oriented ADC while retaining the simplicity of a one-channel converter. Designers should select the reference and input ranges carefully because the usable differential voltage must remain within the reference-defined conversion range. Input and reference routing should be short and symmetric to minimize conversion error and noise pickup. When the source is not differential, a suitable signal-conditioning circuit may be required to translate its output into the converter’s differential input range. This product page combines the manufacturer’s operating limits, conversion characteristics, pin assignment, application guidance, package details, and same-footprint family options to support faster component selection and PCB planning.

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MCP3302-BI/P

MCP3302-BI/P - 13-Bit SPI ADC, 100 ksps, 14-PDIP | Microchip Technology

The Microchip Technology MCP3302-BI/P is a 13-bit successive-approximation (SAR) analog-to-digital converter with four single-ended / two fully differential inputs, a 100 ksps conversion rate and an industry-standard SPI serial interface, packaged in a 14-pin PDIP (PDIP-14) tube. It offers 12-bit plus sign resolution, differential input capability and low power consumption for battery-powered systems and remote data acquisition. An SAR ADC is a category of data-conversion IC that converts an analog voltage into a digital code by comparing the input against a capacitor DAC and successively refining a binary approximation through a comparator. In the broader hierarchy, an ADC is a data converter, which is a data acquisition building block, which sits inside a mixed-signal signal-chain IC alongside op amps, references and interfaces. SAR converters trade resolution-per-conversion speed for very low power and low cost, making them the default choice for slow sensor signals rather than high-bandwidth waveform capture. Key features of the MCP3302-BI/P include true differential analog inputs, an SPI interface with chip select, serial data input and clock pins that can run from a simple microcontroller, low standby current for portable instruments, and a 14-pin PDIP package that is easy to prototype and hand-solder. The -BI/P ordering code designates the 13-bit, industrial-temperature PDIP variant supplied in tubes. Technically, the device uses a sample-and-hold front end ahead of the SAR conversion core, so the input is frozen during each conversion cycle. Multiple inputs are multiplexed, meaning only one analog node is connected to the internal DAC and comparator at a time. The differential architecture means the converter measures V(+) minus V(-), which rejects common-mode noise if the two wires are routed as a differential pair. Typical applications include battery-powered environmental monitoring, precision temperature and pressure sensor acquisition with thermocouple or ratiometric bridges, industrial 4-20 mA loop receivers, and low-rate energy metering. Companion silicon commonly includes SPI-capable microcontrollers such as ATMEGA328P-MNR, RS-485 transceivers such as SP490CN-L/TR for remote field buses, and digital I/O expanders such as PCA9554DBR. A key design consideration is the reference voltage: accuracy of the converted code is bounded by the stability and noise of the VREF pin, so a clean, decoupled reference and adequate input filtering are mandatory for accurate results. The MCP3302-BI/P is a 14-pin PDIP, so newer designs may prefer the SOIC-14 variant. This page combines verified distributor listings, a drop-in replacement review, and practical design notes that go beyond the manufacturer datasheet summary, including interface timing notes, filtering guidance and part-to-part trade-offs.

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MCP3302-BI/ST

MCP3302-BI/ST - 13-Bit Dual-Channel SPI ADC | Microchip

The Microchip Technology MCP3302-BI/ST is a 13-bit, dual-channel successive-approximation analog-to-digital converter with two differential or four single-ended inputs, a 100 kSPS sampling rate, and an SPI serial interface. It is packaged in a 14-pin TSSOP for compact, surface-mount data-acquisition and embedded-control designs. An ADC is a data-acquisition IC that converts an analog voltage into a digital code for processing by a microcontroller or other digital controller. The MCP3302 belongs to the ADC > data-converter > data-acquisition IC hierarchy and supports precision measurement in battery-powered systems, industrial equipment, remote sensors, and test instruments. Its differential inputs are particularly useful when the source is a bridge sensor or another circuit centered around a biased reference voltage. The MCP3302-BI/ST provides 13-bit conversion resolution, two differential or four single-ended input channels, and a maximum sampling rate of 100 kSPS. The SPI interface supports communication with a host processor, while the operating-temperature range of -40°C to +85°C suits industrial equipment. The 14-TSSOP package also allows reuse of a compact mixed-signal PCB layout where analog conversion must coexist with digital control circuitry. The device uses a successive-approximation conversion architecture, meaning the internal converter determines each result through a sequence of increasingly accurate bit decisions. Its low-power design is appropriate for portable and remote data-acquisition systems. Differential sampling can improve common-mode rejection when the measured signal is small and appears in the presence of process noise, although front-end conditioning remains necessary to keep the input voltage within the converter’s valid range. Typical uses include measuring pressure, temperature, strain, potentiometer positions, and other slowly changing analog signals. It can also serve industrial control modules, battery-powered environmental monitors, laboratory measurement equipment, and remote telemetry systems. For multiplexed sensors, separate analog switches may be required because the target configuration provides two differential or four single-ended channels. Design the reference-voltage and analog-input network carefully. Keep SPI traces short, provide a clean supply path, decouple the supply and reference pins near the IC, and route analog inputs away from switching nodes. Confirm input range, acquisition timing, and digital logic levels against the manufacturer datasheet before finalizing the schematic and PCB layout. This product page combines the manufacturer’s device description with practical selection criteria, compatible alternatives, interface considerations, and design guidance to support faster engineering evaluation and more accurate PCB planning.

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MCP3302-CI/P

MCP3302-CI/P - 13-Bit Differential ADC | Microchip Technology

The Microchip Technology MCP3302-CI/P is a 13-bit successive-approximation analog-to-digital converter with 2 differential channels, 4 input connections, and an SPI serial interface, housed in a 14-pin PDIP package. It combines full differential input support with low power consumption, making it suitable for battery-powered systems, remote data acquisition, and other applications that require compact, serial-output conversion. An ADC converts an analog voltage into a digital value for processing, measurement, or storage. The MCP3302 belongs to the ADC hierarchy, where a successive-approximation register compares the unknown input against internally generated reference voltages until the converted code is available. Its differential architecture supports measurement of voltage differences between input pairs, which can improve common-mode rejection when the source is carefully interfaced and the analog front end is designed accordingly. Key features include a 13-bit conversion resolution, two differential ADC channels, four input connections, full differential inputs, and an SPI-compatible serial interface. The SPI interface is suitable for connecting the converter to a microcontroller or other digital controller while transferring conversion results over a compact serial link. The low-power operating characteristics are particularly relevant for remote and battery-powered installations where reducing energy use can extend operating time. Technically, the MCP3302 uses a successive-approximation conversion architecture and offers a two-channel differential ADC. Microchip positions the device for low-power, small-package implementations where the complete measurement chain must communicate with a host processor. Because the MCP3302-CI/P is supplied in a 14-pin PDIP package, it is more appropriate for through-hole assembly and legacy-style PCB layouts than for space-constrained surface-mount designs. Typical applications include battery-powered environmental monitors, remote sensor acquisition nodes, industrial process measurement, laboratory instrumentation, and embedded control systems. The differential inputs can support bridge or ratiometric sensing when paired with suitable input conditioning, while SPI permits straightforward connection to a host microcontroller. Designers should verify the reference voltage, analog input range, sampling rate, digital interface timing, and acquisition method against the manufacturer datasheet before finalizing signal-chain and firmware requirements. Reference routing, source impedance, grounding, and differential pairing are as important as the converter itself when achieving repeatable measurements.

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MCP3302-CI/SL

MCP3302-CI/SL - 13-Bit Dual-Channel ADC | Microchip

The Microchip Technology MCP3302-CI/SL is a 13-bit successive-approximation analog-to-digital converter with two differential or four single-ended inputs, a maximum conversion rate of 100 ksps, and an SPI serial interface in a 14-pin SOIC package. It is designed for low-power battery-powered systems, remote data acquisition, and precision analog measurement. An ADC is a data-acquisition IC that converts an analog voltage into a digital value for processing, measurement, logging, or control. The MCP3302 belongs to the successive-approximation ADC hierarchy, where an internal sample-and-hold circuit and successive comparison process each input. It is a low-power analog-to-digital converter within the broader ADC and data-conversion IC category. Key features include 13-bit resolution, 100 ksps conversion throughput, two differential or four single-ended input configurations, and a single-supply operating point of 5.5 V. Differential inputs support rejection of common-mode voltage and measurement of small signals placed between two input nodes, while the single-ended configuration can use four channels referenced to ground. The -C grade provides maximum differential nonlinearity and integral nonlinearity values of ±1 LSB and ±2 LSB, respectively. These characteristics describe how closely the converter's transfer function follows an ideal straight line. The MCP3302T-CI/SL variant uses the same converter in a tape-and-reel ordering configuration, while MCP3302-CI/SL is supplied in the non-tape-and-reel configuration. Typical uses include battery-powered environmental monitoring, remote sensor acquisition, industrial process measurement, laboratory instrumentation, and low-speed precision control. Differential measurements are especially useful for bridge sensors and current-sense systems where a signal is expressed between two analog nodes rather than relative to ground. When designing around this ADC, place input and reference-decoupling capacitors close to their pins, keep analog and digital return currents separate, and use a stable reference source when measurement accuracy matters. The SPI interface simplifies connection to microcontrollers, but software must correctly handle conversion timing and the device's input-code format. This product page combines the manufacturer information with practical acquisition guidance, drop-in family comparisons, pin-package constraints, and design notes for engineers evaluating the MCP3302-CI/SL in low-power precision ADC applications.

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MCP3304-BI/P

MCP3304-BI/P - 13-Bit 4-Channel 100ksps ADC | Microchip

The Microchip Technology MCP3304-BI/P is a 13-bit successive-approximation analog-to-digital converter with four differential or eight single-ended inputs, a 100 ksps conversion rate, an SPI serial interface, and a 16-pin PDIP package. It is designed for low-power battery-powered systems and remote data-acquisition equipment that require multiple analog channels in a compact through-hole package. An analog-to-digital converter, or ADC, converts continuously varying analog voltages into numerical values that a microcontroller or other digital controller can process. The MCP3304 belongs to the ADC and data-converter hierarchy and uses a successive-approximation register, or SAR architecture. In differential operation, each conversion references one analog input against another. In single-ended operation, the device can expose eight inputs relative to ground, giving designers flexibility in sensor and voltage-measurement circuits. The MCP3304-BI/P provides a 13-bit conversion resolution and a maximum sampling rate of 100 ksps. Published characteristics for the MCP3304-BI family include differential nonlinearity and integral nonlinearity of no more than ±1 LSB. Its SPI serial interface supports communication with embedded controllers, while its differential inputs are useful for rejecting common-mode noise when paired with suitable front-end circuitry. The internal SAR conversion process sequentially determines each output bit. This architecture is well suited to medium-speed measurement systems that do not require the sampling rate of a flash or pipeline ADC. The resulting combination of 13-bit resolution, four differential channels, low-power operation, and a 100 ksps maximum rate supports accurate acquisition of temperature, pressure, potentiometer, and other slowly changing analog signals. Typical uses include battery-operated environmental sensors, remote instrumentation, industrial process monitoring, laboratory data loggers, and embedded control systems. Multiple analog inputs reduce the need for separate converter packages, while the SPI interface allows the ADC to share a serialized bus with other peripherals. Careful reference grounding and input conditioning remain important when measuring small signals. Designers should verify the allowable analog and digital input ranges, acquisition time, reference-voltage limits, and recommended bypass-capacitor values in the manufacturer datasheet. The SPI clock and conversion timing should be coordinated with the host controller, and the analog input network should limit source impedance and switching noise. These checks are essential because timing or reference errors can undermine the apparent benefit of 13-bit resolution. This page consolidates verified distributor pricing, technical characteristics, package information, replacement availability, and practical selection guidance. It also distinguishes a documented same-family option from unsupported cross-package substitutions, helping engineers identify a replacement without assuming that a similar ADC is automatically pin-to-pin compatible.

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MCP3304-BI/SL

MCP3304-BI/SL - 13-Bit 4-Channel SPI ADC | Microchip

The Microchip Technology MCP3304-BI/SL is a 13-bit, four-channel, differential-input successive-approximation analog-to-digital converter with an SPI serial interface, packaged in a 16-pin SOIC. It supports a 100 ksps conversion rate and a 2.7 V operating supply, making it suitable for precision battery-powered measurement, industrial instrumentation, and remote data-acquisition systems. An ADC converts continuous analog voltages into digital values for processing, storage, or transmission. The MCP3304 belongs to the successive-approximation ADC family and uses a comparator, internal DAC, and sampling network to determine each converted result. Its differential inputs support two differential channels or four single-ended channels, allowing it to reject common-mode noise when the source is arranged around a biased reference. Key features include 13-bit resolution, four analog input channels, a 100 ksps sampling rate, and an industry-standard SPI serial interface. Differential input capability is especially useful for bridge sensors, current measurements, and low-level signals referenced to a midpoint voltage. The 2.7 V minimum operating voltage supports low-power designs, while the converter's low-power characteristics suit portable and remote systems. The SPI interface provides a straightforward connection to microcontrollers, sensors, and programmable logic. Conversion results are represented as digital words, while the analog front end performs sampling and successive approximation. Because the device is specified for a 100 ksps conversion rate, system timing should account for acquisition, conversion, and serial transfer intervals rather than treating the conversion rate as complete transaction throughput. Typical uses include battery-powered environmental monitoring, industrial process measurement, remote sensor nodes, laboratory data acquisition, and low-level analog signal conditioning. The four-channel arrangement reduces the need for multiple converters when several related sensors must be measured. Differential operation can also improve immunity to common-mode disturbances when both input conductors share similar noise. Design the input network to keep source impedance and settling behavior compatible with the selected acquisition system. Provide a clean reference voltage, route analog and digital return currents carefully, and use the manufacturer's pin-description table when assigning PCB tracks. The 16-pin SOIC package supports conventional surface-mount assembly, but analog trace routing and reference decoupling remain more important for measurement accuracy than package density alone. This page combines the manufacturer product information, distributor listings, cross-reference results, practical interface guidance, and a focused comparison of documented alternatives. It is designed to help engineers identify whether the MCP3304-BI/SL matches the required resolution, channel count, interface, package, and operating conditions before committing a design to production.

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MCP3304-CI/P

MCP3304-CI/P - 13-Bit 8-Channel SAR ADC | Microchip Technology

The Microchip Technology MCP3304-CI/P is a 13-bit successive-approximation analog-to-digital converter with 100 ksps conversion throughput, 4 differential or 8 single-ended inputs, and a 16-pin PDIP package. It operates from a single 5.5 V supply and uses an industry-standard SPI serial interface for communication with microcontrollers and digital acquisition systems. An analog-to-digital converter is an integrated circuit that converts continuous voltage signals into digital values for measurement, control, or data logging. The MCP3304 belongs to the SAR ADC family, whose successive-approximation conversion method supports low power consumption and deterministic sampling suitable for battery-powered instruments, remote sensors, and industrial data acquisition. Its inputs can be configured as differential pairs for noise rejection or as single-ended channels sharing a common reference. Key device characteristics include 13-bit resolution, four differential or eight single-ended input channels, a 100 ksps conversion rate, and single-supply operation at 5.5 V. The C-grade part is specified with maximum differential nonlinearity of ±1 LSB and maximum integral nonlinearity of ±2 LSB. These linearity figures determine how closely the converter code tracks the ideal transfer function and are important when resolving small sensor signals. The MCP3304 uses a serial peripheral interface, or SPI, to receive conversion commands and return sampled data. Its protocol provides a simple connection to an embedded controller while supporting multiple devices on the same serial bus through chip select. The low-power architecture makes the converter suitable for remote and battery-operated acquisition systems where converter energy use is an important part of the overall measurement budget. Typical applications include multi-channel sensor acquisition, industrial process monitoring, portable instrumentation, battery-powered measurement systems, and remote data acquisition. Differential input operation is particularly useful for bridge transducers, current loops, and other sensors whose useful signal is represented as a small voltage difference across paired inputs. When connecting the MCP3304, keep the analog and digital grounds according to the manufacturer's layout guidance and use a clean reference source. Designers must also verify the input voltage range, acquisition timing, and the conversion code format in the manufacturer datasheet before fixing the firmware command sequence and channel-switching schedule. This page consolidates the verified distributor and manufacturer information for the MCP3304-CI/P with package details, application guidance, comparison parameters, and a conservative assessment of drop-in replacement availability. The only verified same-footprint family alternative is identified explicitly; unverified cross-brand substitutes are not presented as drop-in replacements.

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MCP3304-CI/SL

MCP3304-CI/SL - 13-Bit 4-Channel SAR ADC | Microchip

The Microchip Technology MCP3304-CI/SL is a 13-bit successive-approximation analog-to-digital converter with 100 ksps conversion speed, four differential or eight single-ended inputs, and an SPI serial interface in a 16-pin SOIC package. It operates from a single 5.5 V supply, making it suitable for battery-powered measurement systems, industrial data acquisition, and remote sensor interfaces. An ADC is a data-acquisition IC that converts an analog voltage into a digital number for processing, display, logging, or control. The MCP3304 belongs to the SAR ADC family, which uses a successive-approximation conversion process and provides a practical balance between resolution, throughput, power consumption, and cost. Its differential inputs reject common-mode noise and support direct measurement of bipolar or ratiometric sensor signals. Key features include 13-bit resolution, 100 ksps sampling performance, four differential or eight single-ended input configurations, and low power consumption. The digital interface uses the industry-standard SPI protocol, allowing the converter to connect to microcontrollers, field-programmable gate arrays, and data loggers. Differential operation also supports the manufacturer's ±1 LSB maximum DNL specification and grade-dependent INL characteristics. The MCP3304 uses an internal sample-and-hold stage and a 13-bit successive-approximation core. Differential and single-ended multiplexing allows one converter to service several sensors, reducing component count in multi-channel systems. Low-power operation suits portable instruments where battery capacity and thermal performance are important. Typical applications include battery-powered environmental monitors, industrial process-control nodes, thermocouple and pressure-sensor interfaces, laboratory measurement equipment, and remote data-acquisition systems. The SPI interface simplifies connection to an embedded controller while the 16-lead SOIC package supports conventional surface-mount assembly. When laying out the circuit, place the input and reference components close to the converter, use a low-noise reference source, and route analog and digital return currents separately. Check the channel multiplexing and polarity settings in firmware because single-ended and differential conversions use different input relationships. Treat the unused analog pins according to the manufacturer's pin-description table when assigning PCB tracks.

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MCP3423-E/MF

MCP3423-E/MF - 18-Bit Dual-Channel Delta-Sigma ADC | Microchip

The Microchip Technology MCP3423-E/MF is an 18-bit, two-channel delta-sigma analog-to-digital converter with differential inputs, an I2C interface, and an integrated precision 2.048 V reference. It is offered in a 10-DFN 3x3 mm package and converts signals at up to 4 samples per second. The differential input range is ±2.048 V, while the programmable gain stage supports a 4.096 V full-scale range. These characteristics make the MCP3423-E/MF appropriate for precision instrumentation, industrial process measurement, and low-frequency sensor acquisition. A delta-sigma ADC is an analog-to-digital converter that uses oversampling, digital filtering, and noise shaping to produce high-resolution conversion results from low-frequency analog signals. It belongs to the ADC > analog-to-digital converter > data-converter IC > semiconductor hierarchy. Compared with flash and successive-approximation ADCs, this architecture is particularly effective when high resolution and good rejection of low-frequency noise matter more than very high sampling rates. The MCP3423-E/MF provides up to 18 bits of resolution across two analog input channels. Differential inputs support measurement of voltage differences, which is valuable when sensor outputs are referenced to a remote or noisy ground. The on-board 2.048 V precision reference establishes the converter's scale without requiring an external reference. Power-on reset and automatic calibration simplify initial system operation, while the 2.7 V to 5.5 V supply range supports both 3.3 V and 5 V systems. The converter uses a sigma-delta architecture and an I2C digital interface. Its 4 samples-per-second conversion capability is suitable for slowly changing industrial, environmental, and instrumentation signals rather than high-bandwidth waveform capture. The 10-DFN 3x3 mm package also reduces board footprint, although the exposed-pad construction and differential signal requirements demand careful layout and thermal design. Typical applications include 4-20 mA process-loop measurement, bridge-based pressure sensing, low-level voltage acquisition, environmental monitoring, and precision laboratory instrumentation. Differential excitation and conversion of the resulting small voltage difference can improve common-mode rejection. The 18-bit resolution is also useful when a sensor output represents only a small portion of the converter's differential input range. Designers should place input and reference-related connections for minimal signal-loop area, provide suitable bypass capacitance, and route the differential pair away from switching nodes. The package's compact thermal land pattern should be connected to the ground plane as directed by Microchip's package documentation. Because the verified product data identifies a 10-DFN package but does not provide its complete numbered pin map, the pinout is intentionally left null. This page combines verified manufacturer and distributor information with application guidance, purchasing context, and engineering-focused comparisons. It also distinguishes verified technical facts from attributes that still require confirmation from the complete Microchip datasheet before layout or production release.

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MCP3423-E/UN

MCP3423-E/UN - 18-Bit Dual Delta-Sigma ADC | Microchip

The Microchip Technology MCP3423-E/UN is a two-channel, 18-bit delta-sigma analog-to-digital converter with differential inputs, an I2C interface, and an integrated 2.048 V precision reference in a 10-MSOP package. The device supports input ranges up to ±2.048 V differentially and is specified in distributor listings for operation at up to 4 samples per second. An ADC is an analog-to-digital converter, a semiconductor that converts continuous voltage signals into digital codes for processing, measurement, logging, or control. The MCP3423 belongs to the delta-sigma ADC hierarchy, where an internal modulator and digital filtering provide high resolution and low noise at relatively low conversion rates. It is therefore suited to precision measurements rather than high-speed waveform capture. Key features include two analog input channels, up to 18-bit resolution, differential input capability, an on-board 2.048 V reference, and an I2C digital interface. The 2.048 V reference establishes the differential input scale for each conversion, while the dual-channel architecture allows related measurements to be captured without changing the converter package. The 10-MSOP format supports compact, surface-mount instrumentation designs. Technically, the MCP3423 combines a delta-sigma conversion stage with on-chip noise rejection and digital decimation. Low-rate conversion allows the converter to reject out-of-band noise effectively, while the integrated reference reduces the number of external precision components required. The I2C interface provides a compact connection to microcontrollers, sensors, data loggers, and industrial measurement equipment, although the maximum bus and interface timing details require confirmation from the manufacturer datasheet. Typical uses include bridge or load-cell signal acquisition, industrial process monitoring, low-frequency sensor measurement, laboratory instrumentation, and portable data acquisition. Differential inputs are particularly useful when the measured signal is small and a differential amplifier or low-level front end converts it into the converter's allowed input range. The device is not positioned as a high-speed SAR ADC because its listed conversion rate is approximately 4 SPS. Designers should verify analog input common-mode limits, reference accuracy, supply requirements, digital interface timing, and the required gain configuration against the manufacturer datasheet before layout. Input filtering and source impedance remain important because the selected conversion rate and digital filter determine the usable bandwidth; filtering too aggressively can delay settling, while insufficient filtering can admit unwanted out-of-band noise. This product page consolidates verified manufacturer and distributor information, pricing, package details, design guidance, and the available drop-in cross-reference. It is intended to help engineers identify the correct MCP3423-E/UN variant and distinguish a genuine same-package replacement from a merely similar converter.

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MCP3423T-E/UN

MCP3423T-E/UN - 18-Bit Dual-Channel Delta-Sigma ADC | Microchip Technology

The Microchip Technology MCP3423T-E/UN is an 18-bit, dual-channel, low-noise delta-sigma analog-to-digital converter with differential inputs, an onboard 2.048 V precision reference, and an I²C-compatible serial interface. The device is specified for 3.3 V and 5 V operation and uses a 10-pin MSOP surface-mount package. Its two differential input channels provide flexible measurement of bipolar sensor signals while the onboard reference simplifies system design by removing the need for an external reference source. The MCP3423 is part of the MCP342X family of delta-sigma ADCs designed for precision signal acquisition. A delta-sigma ADC converts an analog input by oversampling and digital filtering, which is useful when the application requires high resolution and good noise performance at relatively low conversion rates. The MCP3423 supports up to 18 bits of resolution and conversion rates up to 240 SPS, according to the manufacturer product information. Key features include two differential channels, a 2.048 V onboard reference, automatic calibration, power-on reset, and a two-wire I²C-compatible interface. The differential input architecture helps reject common-mode noise when measuring low-level sensor outputs. The internal reference establishes a nominal differential input range of ±2.048 V, while the converter's low-noise architecture is intended for applications requiring accurate measurement of slowly changing analog quantities. The device uses an I²C-compatible serial interface to transfer conversion results to a microcontroller or other digital controller. Configuration registers control the conversion cycle, input channel selection, gain, and operating mode. Because the converter is designed for low-rate precision measurement rather than high-speed waveform capture, its conversion timing should be considered in applications where latency or dynamic signal bandwidth is important. Typical applications include pressure and temperature sensor interfaces, current sensing, bridge-transducer measurement, industrial process monitoring, and low-rate instrumentation. Differential inputs are particularly useful with resistive sensors whose outputs are referenced around a common midpoint. The internal reference is advantageous in compact systems where space, component count, and calibration complexity are constrained. When laying out the circuit, route the analog inputs away from digital switching nodes and keep the input connections short. The supply and ground pins require effective bypassing close to the device, and the exposed-pad or thermal considerations should follow the package-specific land pattern in the manufacturer datasheet. Verify the conversion time, gain, reference configuration, and I²C address before finalizing the firmware. This page also organizes the device specifications, replacement considerations, and application guidance for faster engineering evaluation.

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MCP3424-E/SL

MCP3424-E/SL - 18-Bit 4-Channel Delta-Sigma ADC | Microchip

Microchip Technology MCP3424-E/SL is an 18-bit, four-channel delta-sigma analog-to-digital converter with differential inputs, an onboard 2.048 V precision reference, and a 14-pin SOIC package. According to the manufacturer product page, the differential input range is ±2.048 V when the internal reference is used. The converter is intended for low-noise, high-accuracy measurement systems in which several analog channels must be digitized through a serial interface. An ADC is a mixed-signal integrated circuit that converts continuous analog voltage into a digital code. The MCP3424 belongs to the delta-sigma ADC category, which uses noise shaping and digital filtering to obtain high resolution from relatively slow conversion rates. It sits within the broader semiconductor hierarchy as an ADC, data-converter IC, analog-to-digital converter, and signal-acquisition component. Its four-channel architecture is useful when monitoring several differential sensors or precision analog front ends. The MCP3424-E/SL provides up to 18 bits of resolution and supports four analog input channels. Its low-noise, high-accuracy delta-sigma architecture is suited to instrumentation where small voltage changes must be measured reliably. The onboard 2.048 V reference provides a defined differential measurement range of ±2.048 V without requiring an external reference source. The 14-pin SOIC package also supports conventional surface-mount PCB assembly. MCP3424 devices use a continuous or single-conversion delta-sigma architecture intended for precision rather than high-speed waveform capture. The verified distributor listing identifies the MCP3424 family as a 1 sigma-delta converter, while another listing identifies a 3.75 SPS operating rate. Conversion speed, noise performance, input impedance, digital interface details, supply requirements, and absolute maximum ratings should be confirmed against the manufacturer datasheet before final design release. Typical measurement uses include bridge or differential sensor instrumentation, industrial process monitoring, laboratory data acquisition, low-frequency precision acquisition, and multi-channel embedded measurement. In each case, the converter can digitize more than one analog input while preserving a compact package. System designers should account for the input settling behavior and digital filtering delay when planning sample timing or synchronizing the conversion result with external sensors. A key design consideration is the relationship between the selected reference and the analog input range. With the internal 2.048 V reference, the verified differential range is ±2.048 V. A PCB design should preserve signal integrity at the analog inputs, provide a low-noise analog ground path, and account for the converter's serial communication requirements. An external reference or additional filtering should be used only after its range, accuracy, and noise implications have been verified from the manufacturer datasheet. This product record combines verified manufacturer and distributor information with practical selection guidance, application context, and an explicit distinction between confirmed specifications and data still required for design-in. It also documents that no additional pin-to-pin drop-in alternatives were established by the supplied cross-reference evidence, avoiding unsupported replacement claims.

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MCP3424-E/ST

MCP3424-E/ST - 18-Bit Quad-Channel Delta-Sigma ADC | Microchip Technology

Microchip Technology MCP3424-E/ST is an 18-bit, four-channel delta-sigma analog-to-digital converter with differential inputs, an integrated precision 2.048 V reference, and a two-wire I2C-compatible serial interface. The device is supplied in a 14-TSSOP package and operates from a single supply voltage ranging from 2.7 V to 5.5 V. Its low-noise, high-accuracy architecture is intended for measurement systems that require more than 16-bit resolution but can tolerate a conversion rate of approximately 3.75 samples per second. A delta-sigma ADC is a sigma-delta analog-to-digital converter that uses oversampling, noise shaping, and digital filtering to convert a differential analog input into a high-resolution digital code. In the signal-chain hierarchy, the MCP3424-E/ST is an ADC, specifically a low-frequency precision delta-sigma ADC within the broader data-converter and semiconductor categories. Its differential input architecture helps reject common-mode noise when paired with suitable sensor and instrumentation amplifiers. The MCP3424 family provides up to 18-bit resolution, four input channels, a low-noise architecture, and an onboard 2.048 V precision reference that enables a differential input range of ±2.048 V according to the manufacturer product information. The I2C-compatible interface allows the converter to connect efficiently to embedded controllers while consuming relatively few external pins. The 14-TSSOP package also makes the device suitable for compact instrumentation equipment. Typical uses include pressure and temperature acquisition, industrial process monitoring, laboratory measurement, portable instrumentation, and sensor interfaces where low-frequency measurements are more important than high conversion speed. The differential inputs and integrated reference help simplify analog front-end design while preserving measurement resolution. The 2.7 V to 5.5 V operating range supports both 3.3 V and 5 V systems. When designing around the MCP3424-E/ST, confirm the analog input range, common-mode limits, reference configuration, digital interface voltage, and conversion timing against the manufacturer datasheet. Place input filtering and decoupling close to the device, and account for the 3.75 SPS conversion rate when defining sample timing. This page combines verified distributor information, manufacturer details, package information, practical application guidance, and clearly qualified replacement options.

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MCP3426A0T-E/SN

MCP3426A0T-E/SN - 16-Bit Delta-Sigma ADC, Dual Ch, 15SPS | Microchip

The Microchip Technology MCP3426A0T-E/SN is a 16-bit, dual-channel, low-noise delta-sigma analog-to-digital converter with differential inputs, an on-board 2.048 V precision reference, and an I2C (two-wire) interface, supplied in an 8-pin SOIC package. According to the MCP3426/7/8 datasheet (Microchip document 22226A), the device provides a maximum output sample rate of 15 SPS at 16-bit resolution, an input range of ±2.048 V differentially, and operates from a single 2.7 V to 5.5 V supply. The 'A0' suffix denotes the fixed I2C address option and the 'T' indicates Tape and Reel packaging. A delta-sigma ADC (also written ΔΣ or sigma-delta ADC) is a type of oversampling converter that uses a modulator and digital filtering to achieve high resolution and excellent noise rejection, especially at low bandwidths. Within the broader signal-chain hierarchy, the MCP3426 belongs to the data-acquisition IC category -> analog-to-digital converter -> precision delta-sigma ADC -> low-power sensor ADC. Its on-chip reference and PGA eliminate most external components, simplifying designs that previously required a standalone ADC plus an external voltage reference. Key features include a programmable gain amplifier (PGA) with gains of 1, 2, 4, or 8, an internal 2.048 V reference with ±0.05% typical initial accuracy, 16-bit noise-free resolution, an I2C interface with user-configurable addresses, and an operating current of approximately 145 µA at 3 V during continuous conversion. The on-chip calibration register supports offset and gain self-calibration, which is useful for ratiometric measurements and sensor drift compensation. The architecture uses a second-order charge-balancing modulator and an SINC1 digital filter, which trades off settling time against noise. At the lowest data rate of 15 SPS the device achieves true 16-bit noise-free performance, while at the highest 240 SPS rate it switches to 12-bit effective resolution, making it well suited to multi-rate acquisition strategies. Typical applications include direct digitization of thermocouples, RTDs, bridge pressure sensors, strain gauges, and battery-cell voltage monitors. The differential ±2.048 V input range accommodates most low-voltage analog sensors without additional signal conditioning. When designing with the MCP3426, the I2C pull-up resistors must be sized correctly for the selected VDD and bus speed, and an external 0.1 µF decoupling capacitor placed close to the VDD pin is mandatory. Designers should also remember that the same address option 'A0' cannot co-exist on a single I2C bus with another A0 device; the A1, A2, or A3 address options must be selected for multi-channel systems. This page synthesizes distributor pricing, drop-in alternatives drawn from the same MCP3426 family, and practical design notes that go beyond the manufacturer datasheet's typical-application section.

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MCP3427-E/MF

MCP3427-E/MF - 16-Bit Dual-Channel Sigma-Delta ADC | Microchip

Microchip Technology MCP3427-E/MF is a 16-bit, two-channel, delta-sigma analog-to-digital converter with differential inputs, an onboard 2.048 V precision reference, programmable gain, and an I2C interface, housed in a 10-pin DFN package. The device is designed for low-noise, high-accuracy measurement systems where a sensor output must be converted with limited board space and low system complexity. The MCP3427-E/MF supports input measurement from small differential signals through an internal programmable-gain amplifier. Its differential input architecture helps reject common-mode noise when the measured source is referenced to a local ground or paired sensor output. The two input channels can be configured for single-ended or differential operation, allowing the converter to serve multiple analog front-end arrangements without changing the device package. Key features include up to 16-bit resolution, a 2.048 V internal reference, self-calibration of internal offset and gain for each conversion, and a serial I2C interface suitable for embedded measurement systems. The manufacturer describes the converter as a low-noise, high-accuracy delta-sigma ADC for precision data acquisition. The MCP3427-E/MF is supplied in a compact 10-VFDFN exposed-pad package, making it appropriate for space-constrained industrial, instrumentation, and sensor-interface designs. Delta-sigma conversion is especially useful when high resolution and noise rejection are more important than instantaneous conversion rate. The MCP3427 family is intended for measurements that can be filtered digitally after acquisition, such as temperature, pressure, load-cell, bridge, and slow process-control signals. The internal reference helps establish a stable conversion baseline, while the I2C interface allows a microcontroller or embedded controller to retrieve measurements without using a parallel data bus. The MCP3427-E/MF is not a high-speed waveform ADC. Its conversion rate and digital filter behavior should be considered when the application requires rapid sampling, low-latency control, or wide-band signal capture. For those requirements, a higher-bandwidth successive-approximation or pipeline converter would generally be a better architectural fit. For slow precision measurements, however, the MCP3427-E/MF provides a compact combination of resolution, differential inputs, programmable gain, and serial connectivity. Designers should pay attention to input common-mode voltage, analog noise filtering, reference stability, I2C address configuration, and decoupling around the exposed pad. The input network should limit high-frequency interference before it reaches the converter, while the digital interface should use suitable pull-up resistors and signal-integrity practices. This product page synthesizes the verified manufacturer and distributor information, package details, purchasing links, and engineering guidance for the MCP3427-E/MF.

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