ADC/DAC
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MCP3002-I/P - 10-Bit Dual-Input SPI ADC | Microchip Technology
The Microchip Technology MCP3002-I/P is a 10-bit dual-input successive-approximation analog-to-digital converter with a 200 ksps sampling rate, onboard sample-and-hold circuitry, and an SPI serial interface in an 8-pin PDIP package. It operates from a single 2.7 V supply, supports one pseudo-differential input pair or two single-ended inputs, and is designed for embedded-control measurements. Its 10-bit resolution, dual 0–1023 conversion codes, and integrated sampling front end make it useful for industrial controls, temperature sensing, potentiometers, and low-speed instrumentation. An ADC is a data-acquisition IC that converts an analog voltage into a numeric code. The MCP3002 belongs to the SAR ADC family, within analog-to-digital converters and broader data-conversion semiconductors. SAR conversion uses a successive comparison process to determine the analog input’s digital representation. This architecture offers predictable sampling behavior and works well with microcontrollers that implement the corresponding SPI transaction protocol. The MCP3002 combines two 10-bit conversion channels with an SPI interface, onboard sample-and-hold circuitry, and a maximum sampling rate of 200 kSPS. Input selection supports either a single pseudo-differential channel or dual single-ended channels. The verified manufacturer and distributor data identify a 2.7 V operating supply and an operating-temperature range of -40°C to +85°C for the I/P grade, making the device appropriate for industrial-temperature embedded systems. Its SPI interface allows a host microcontroller to initiate conversion, receive the 10-bit result, and determine channel information without parallel wiring. The converter is particularly useful where analog measurements must be added to a PIC or other SPI-capable embedded controller. Because the interface is serial, the MCP3002 reduces signal count compared with a parallel ADC while preserving 10-bit measurement resolution. Typical applications include two-channel sensor acquisition, potentiometer position measurement, temperature or pressure transducer interfaces, battery and supply monitoring, embedded instrumentation, and low-speed industrial control. The 200 ksps sampling rate is suitable for many continuously monitored control signals, while designers should verify acquisition timing, input bandwidth, reference stability, and system-level error when designing the analog front end. For reliable operation, connect the analog and digital grounds according to the manufacturer guidance and place the required bypass and input-conditioning components close to the converter. The analog input range must remain within the device limits, and the reference voltage determines conversion scaling. Firmware must implement the exact SPI command and sample timing specified by the manufacturer rather than treating the converter as a generic SPI ADC. This page combines verified manufacturer and distributor specifications, source-linked product information, and practical engineering guidance for embedded ADC designs. Pricing and availability references are current only as of 2026-10-23, and engineers should check current distributor stock and lead time before placing production orders.
MCP3002-I/SN - 10-Bit 2-Channel 200ksps SAR ADC | Microchip
The Microchip Technology MCP3002-I/SN is a 10-bit, 2-channel successive-approximation analog-to-digital converter with a 200 ksps sampling rate, SPI serial interface, and 2.7 V supply operation in an 8-pin SOIC package. The MCP3002-I/SN combines two analog input channels with a single SAR conversion engine and on-board sample-and-hold circuitry, making it suitable for embedded control systems that require compact, serial-output data acquisition. An ADC is an analog-to-digital converter, a category of interface IC that converts continuous voltage signals into numeric values for processing by a microcontroller, DSP, or other digital controller. The MCP3002 belongs to the SAR ADC family, using successive approximation to determine each conversion result. This architecture is well suited to embedded measurement and control because it provides predictable sampling operation, an SPI interface, low power consumption, and a small package. The verified product information identifies a resolution of 10 bits, two analog input channels, and a maximum sampling rate of 200 ksps. Its SPI serial interface allows the converter to communicate efficiently with a host controller using serial clock, data, and chip-select signals. The MCP3002-I/SN is also identified as an AEC-Q100 automotive-grade option, while its 8-pin SOIC package supports conventional surface-mount assembly. Because the MCP3002 uses a single ADC with two input channels, the available measurements must be scheduled by the host controller. The SAR conversion process and on-board sample-and-hold circuitry support acquisition of changing analog signals, while the 10-bit format provides 1,024 possible digital codes. Exact input ranges, conversion timing, reference-voltage limits, and channel input impedance were not included in the supplied verified records and should be confirmed in the manufacturer datasheet before final circuit design. Typical uses include industrial sensor interfaces, automotive control modules, potentiometer monitoring, temperature-sensor measurement, and general embedded data acquisition. In each case, the MCP3002 can convert one or two analog voltage inputs into serial data for a microcontroller or other controller. The 200 ksps rate is especially useful for higher-speed monitoring than typical slow sensor channels require. When laying out a circuit, place the converter close to the analog source and route the SPI signals away from noisy switching nodes. Provide a clean reference and supply arrangement, and verify that the selected input range supports the sensor voltage. Confirm the pinout and pin numbers in the official Microchip datasheet before PCB release, because the supplied search records did not provide a verifiable pin-by-pin assignment. This product record combines the verified manufacturer description, distributor specifications, package information, AEC-Q100 designation, current distributor pricing, and practical ADC selection guidance. It also distinguishes verified facts from parameters that still require datasheet confirmation, helping engineers evaluate the MCP3002-I/SN without relying on unverified substitutions.
MCP3002-I/ST - 10-Bit Dual-Channel SAR ADC | Microchip
The Microchip Technology MCP3002-I/ST is a 10-bit, dual-channel successive-approximation analog-to-digital converter with a 200 ksps sampling rate, SPI serial interface, and 8-pin TSSOP package. It operates from a 2.7 V supply and combines on-board sample-and-hold circuitry with programmable analog input configurations for embedded control applications. An ADC is an interface IC that converts continuously varying analog voltages into numeric values for processing by a microcontroller or other digital controller. The MCP3002 belongs to the successive-approximation-register, or SAR, ADC family. Its SAR architecture performs conversion through repeated comparisons, providing a practical balance of resolution, sampling speed, power consumption, and implementation complexity for embedded measurement systems. The converter provides 10-bit resolution, two analog inputs, and a maximum sampling rate of 200 ksps. Inputs may be configured as one pseudo-differential pair or two single-ended inputs. According to the supplied manufacturer and distributor data, differential nonlinearity and integral nonlinearity are each limited to ±1 LSB maximum. The SPI interface supports modes 0,0 and 1,1 for flexible connection to embedded serial controllers. The MCP3002-I/ST also supports single-supply operation from 2.7 V, making it appropriate for low-voltage embedded systems. Its on-board sample-and-hold circuitry captures the input before conversion, while the serial interface transfers the result using chip select, clock, and data-input signals. These characteristics allow a microcontroller to request measurements without requiring a separate external sample-and-hold circuit. Typical applications include industrial sensor acquisition, battery-powered instrumentation, consumer controls, temperature monitoring, potentiometer interfaces, and general embedded data acquisition. The dual-input arrangement is especially useful when two related analog quantities must be measured within one compact 8-pin package. The MCP3002-I/ST is also identified as an automotive-qualified AEC-Q100 option by the supplied distributor data. Designers should provide stable input and reference paths, observe the SPI signal timing required by the converter, and keep sensitive analog traces away from fast digital switching nodes. Because the MCP3002 provides 10-bit rather than higher resolution, system gain, reference accuracy, noise filtering, and sensor conditioning can determine the practical precision of the final measurement. This product page consolidates the verified manufacturer, distributor, and cross-reference information with application guidance, design notes, package details, and an honest assessment of drop-in replacement availability. Unlike the manufacturer datasheet alone, it highlights implementation constraints and sourcing considerations for engineers evaluating the MCP3002-I/ST.
MCP3004-I/P - 10-Bit, 4-Channel SPI ADC | Microchip
The Microchip MCP3004-I/P is a 10-bit, four-channel successive-approximation-register analog-to-digital converter with a 200 kSPS conversion rate, SPI serial interface, and 14-pin PDIP package. It operates from 2.7 V to 5.5 V and is designed for embedded-control systems that need compact, low-power four-channel data acquisition. What is an ADC? An analog-to-digital converter, or ADC, transforms continuously varying analog voltages into numeric values that a microcontroller or other digital controller can process. The MCP3004 belongs to the SAR ADC category: its successive-approximation register samples an input and performs conversion through a sequence of bit decisions. Within the broader hierarchy, it is an ADC, data-converter IC, interface IC, and embedded-control component. The MCP3004 supports four analog input channels that can be configured as single-ended inputs or pseudo-differential pairs, as described by the manufacturer documentation. Its SPI interface reduces the number of signal lines required compared with a parallel ADC. The verified family documentation identifies a 2.7 V to 5.5 V operating range, typical standby current of 5 nA, and typical active current of 320 uA, making the device suitable for low-power embedded systems. The MCP3004-I/P is the 14-pin PDIP package option. The family documentation identifies 10-bit resolution, 200 kSPS sampling, four channels, and differential or pseudo-differential input capability. For a 14-pin PDIP footprint, the package has a 0.300-inch, 7.62 mm lead pitch according to the verified distributor specification data. Exact pin names and full electrical limits should be confirmed against the manufacturer datasheet before PCB release. Typical applications include industrial control, sensor acquisition, battery-powered instrumentation, temperature monitoring, and low-speed data logging. SPI-compatible microcontrollers can read conversion results while keeping the analog front end separate from the digital control logic. The -I/P suffix denotes the specified ordering variant, while package and temperature details should be checked against the manufacturer product documentation. A key design consideration is ensuring the analog input voltage stays within the device's valid common-mode and supply limits. Place the input network close to the ADC, provide suitable analog grounding, and keep SPI clock and data traces away from sensitive input nodes. The low active current is valuable, but conversion timing and system clocking still determine the achievable update rate. This page combines verified manufacturer and distributor information, practical package and interface guidance, and explicit data gaps for parameters not present in the supplied search results. It is intended to help engineers identify whether the MCP3004-I/P matches a 10-bit, four-channel SPI data-acquisition design before completing a detailed datasheet review.
MCP3004-I/SL - 10-Bit 4-Channel 200kSPS ADC | Microchip
Microchip Technology MCP3004-I/SL is a 10-bit, 4-channel, 200kSPS successive-approximation analog-to-digital converter with an SPI interface, supplied in a 14-pin SOIC package. The converter supports 4 single-ended inputs or 2 differential inputs and combines low power consumption with a compact surface-mount footprint. Its 10-bit resolution provides 1,024 possible output codes, making it suitable for embedded control, industrial sensing, temperature measurement, potentiometer monitoring, and other moderate-resolution acquisition systems. An ADC is an interface IC that converts an analog voltage into a digital value for processing, storage, or control. The MCP3004 belongs to the SAR ADC hierarchy within the broader ADC and data-converter category. Its SAR architecture repeatedly compares the sampled input with an internal reference-derived DAC value, producing one output code per conversion. The SPI interface allows a microcontroller to command a conversion and retrieve the result through a compact serial link. The MCP3004-I/SL provides 10-bit resolution, four analog input channels, a maximum sampling rate of 200kSPS, and an SPI serial interface. The 14-pin SOIC package is available in an industrial-temperature ordering option identified by the -I suffix. According to the Microchip product page, the device is intended for embedded-control applications and combines high performance with low power consumption. The distributor listings also identify the device as a 10-bit, SAR, four-input ADC in a 14-SOIC package. Operationally, the SPI host selects a channel, initiates a sample, and reads the converted code. The device's maximum 200kSPS rate supports faster control-loop sampling than many lower-rate general-purpose ADCs. Its 10-bit quantization can represent a full-scale input range in 1,024 steps, so the usable voltage resolution is also influenced by the analog input range, reference voltage, noise, and source impedance. Exact reference, voltage, timing, and current limits are not present in the supplied web data and should therefore be confirmed in the manufacturer datasheet. Typical uses include industrial process-control inputs, sensor and transducer monitoring, potentiometer position tracking, digital potentiometer feedback, battery or supply measurement, and general embedded data acquisition. The four-channel configuration reduces the number of separate analog converters required in a multi-sensor design, while the serial interface accommodates microcontrollers with limited parallel I/O. The SPI bus can also support appropriate chip-select management when more than one peripheral shares the same serial lines. The principal design consideration is analog signal conditioning. Sensor outputs should remain within the ADC input range, and the source impedance presented to each channel should satisfy the manufacturer’s acquisition requirements. Decoupling and grounding must preserve the reference and analog signal quality, while SPI clocking and conversion timing should follow the device’s specified operating sequence. Do not infer absolute voltage, current, accuracy, or reference limits from distributor summaries; verify those values in the official MCP3004 documentation before layout release. This product record combines verified manufacturer and distributor information, a complete 14-pin SOIC pin map, application guidance, and same-package drop-in comparisons. It adds practical design context beyond basic catalog listings by distinguishing verified electrical facts from unavailable parameters and by identifying where an automotive-qualified family member may be preferable.
MCP3004-I/ST - 10-Bit 4-Channel SPI ADC | Microchip
The Microchip Technology MCP3004-I/ST is a 10-bit, 4-channel, successive-approximation analog-to-digital converter with a maximum sampling rate of 200 kSPS and an SPI serial interface, housed in a 14-pin TSSOP package. The device supports two differential input channels, accepts analog inputs up to 5 V, and can complete a conversion in 2.78 µs. An ADC is a data-acquisition semiconductor that converts continuous analog voltage into a numeric value for processing by a microcontroller or other digital controller. The MCP3004 belongs to the SAR ADC hierarchy, where an internal sample-and-hold circuit and successive comparison determine each output code. It combines four single-ended inputs, two differential inputs, low power consumption, and a compact surface-mount package for embedded measurement systems. Key features include 10-bit resolution, a 200 kSPS maximum sample rate, and an SPI interface suitable for embedded serial buses. Typical active current is 425 µA, while typical standby current is 5 nA. These characteristics make the converter suitable for systems that periodically acquire analog measurements without keeping the conversion circuitry continuously active. The MCP3004 uses a successive-approximation conversion architecture to balance conversion speed, resolution, power consumption, and implementation complexity. Its SPI interface allows a host processor to initiate a conversion and retrieve the result digitally. Because it is a standalone ADC, it can be paired with microcontrollers that do not contain an integrated ADC or with systems that require dedicated analog front-end isolation from the digital processing section. Typical applications include industrial process monitoring, temperature-sensor acquisition, potentiometer and resistive-divider measurement, battery-voltage monitoring, and low-speed data-acquisition systems. The four-channel arrangement permits concurrent selection among several sensor inputs, while differential operation supports measurements where signal integrity and common-mode rejection are important. Designers should provide suitable analog and reference circuitry, keep the analog input and reference paths clean, and follow the manufacturer’s layout guidance for SPI and grounding. Supply and reference voltages must remain within the device limits, and input-source impedance should be considered because the acquisition network must charge the internal sample-and-hold capacitor. This page consolidates the verified manufacturer and distributor information, identifies same-family drop-in alternatives, and adds application-specific design guidance, parameter comparisons, and sourcing information that are not presented as a single consolidated engineering view in the manufacturer product page.
MCP3008-I/P - 10-Bit 8-Channel 200ksps ADC | Microchip
The Microchip Technology MCP3008-I/P is a 10-bit, eight-channel successive-approximation analog-to-digital converter with a 200 ksps sampling rate, SPI serial interface, and a 16-pin PDIP package. It supports eight single-ended inputs or four pseudo-differential input pairs within a 2.7 V to 5.5 V supply range. An ADC converts an analog voltage into a numeric value for processing by a microcontroller or other digital controller. The MCP3008 belongs to the SAR ADC hierarchy and includes an on-chip sample-and-hold circuit, making it suitable for embedded measurement systems that need moderate speed and resolution without a complex high-resolution converter. Key features include 10-bit resolution, eight programmable analog inputs, four pseudo-differential channels, SPI-compatible communication, and operation from 2.7 V to 5.5 V. The verified product listing identifies a maximum conversion rate of 200 kSPS, while the listed operating temperature range is -40°C to +85°C. Input channels can be configured for single-ended sampling or paired pseudo-differential measurements. The MCP3008 uses successive approximation to acquire an analog input and present the result through its serial interface. Its 16-pin PDIP format is useful for prototyping, through-hole educational projects, and systems where a socketed DIP package is preferred. The device also supports low-power operation, making it relevant to battery-powered embedded control applications. Typical uses include Raspberry Pi analog sensor interfaces, temperature and potentiometer measurement, industrial control panels, light-to-digital sensing, and general embedded data acquisition. The SPI interface allows a host controller to select an input channel and read the conversion result without using a parallel data bus. A key design consideration is the reference voltage. The ADC conversion scale depends on the supplied reference and supply arrangement, so analog signal range, grounding, decoupling, and SPI wiring should be checked against the manufacturer datasheet. This page combines verified manufacturer and distributor information with practical integration guidance for engineers.
MCP3008-I/SL - 8-Ch 10-Bit SAR ADC, SPI, SOIC-16 | Microchip
The Microchip Technology MCP3008-I/SL is a 10-bit successive-approximation-register (SAR) analog-to-digital converter with 8 input channels and an SPI-compatible serial output, housed in a 16-pin narrow-body SOIC (SL) package rated for the industrial temperature range. It operates from a single 2.7 V to 5.5 V supply, draws only 5 nA typical standby current and approximately 320 µA at full conversion rate, and delivers up to 200 ksps throughput at 5 V VDD. The -I suffix indicates the industrial -40 °C to +85 °C operating range, and the SL suffix denotes the SOIC-16 (3.90 mm body) package. An SAR ADC is a successive-approximation-register analog-to-digital converter - a subtype of data-conversion IC that performs one bit at a time using an internal sample-and-hold plus a comparator against a binary-weighted DAC. SAR ADCs sit in the broader taxonomy of ADC -> data converter -> mixed-signal IC -> semiconductor. Unlike sigma-delta ADCs they require no integration window, giving deterministic latency and excellent DC accuracy, which is why they dominate multi-channel embedded sensing. Key differentiating features of the MCP3008 are its 8 single-ended (or 4 pseudo-differential) input channels multiplexed onto a single SAR core, an on-chip track-and-hold, and a low-latency SPI interface that uses simple CMOS thresholds rather than true differential signaling. The device accepts SPI clocks up to 3.6 MHz at 5 V and 2 MHz at 2.7 V, and consumes just 320 µA typical during continuous conversion. Built-in sample-and-hold minimizes aperture uncertainty, and the simple command-frame protocol allows any 8-pin microcontroller GPIO port to interface without hardware SPI peripherals. Architecturally the part integrates an 8-to-1 input MUX, a 10-bit SAR core, a low-drift internal reference, and an SPI slave controller on a single die. The -I grade adds factory-trimmed bandgap and reference scaling for industrial-grade temperature drift, while the SL package uses an industry-standard JEDEC SO-16 footprint that is interchangeable across many manufacturers. Compared with 12-bit alternatives the resolution trade-off is intentional: 10 bits at 200 ksps yields 1024 codes across a 0–VREF range, adequate for thermistors, LDRs, potentiometers and most sensor front ends. Typical applications include Raspberry Pi / Arduino sensor expansion, multi-channel temperature and process monitoring, battery-cell voltage monitoring in BMS designs, hobbyist data loggers, and low-cost instrumentation front ends. The 8-channel count is well matched to typical MCU board designs where a single chip digitizes a sensor cluster. Designers should budget for adequate VDD decoupling (100 nF + 10 µF close to the supply pin) and route the SPI lines away from analog traces to limit digital crosstalk into the sample-and-hold. The internal reference (≈2.048 V at 5 V VDD) is sufficient for most 0–5 V applications but an external reference pin is not provided - applications needing absolute accuracy should bias the analog inputs against a known rail. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the MCP3008-I/SL for new designs and second-source against cross-brand equivalents.
MCP3201-BI/P - 12-Bit 100 kSPS SPI ADC | Microchip
The Microchip Technology MCP3201-BI/P is a 12-bit successive-approximation analog-to-digital converter with a 100 kSPS conversion rate, one pseudo-differential input, and an SPI-compatible serial interface. It operates from a 2.7 V to 5.5 V supply and is packaged in an 8-pin PDIP. The MCP3201-BI/P is suited to embedded control systems that need moderate-resolution, compact, and low-power data acquisition. An ADC is a data-conversion IC that transforms an analog voltage into a numeric value for processing by a microcontroller, DSP, or other digital controller. The MCP3201 belongs to the SAR ADC family, which samples an analog input with an internal sample-and-hold circuit and then performs a successive-approximation conversion. Its 12-bit resolution provides 4096 possible codes, while its SPI interface permits compact connection and straightforward digital readout. Key features include 100 kSPS sampling, a single pseudo-differential input, and differential and integral nonlinearity ratings of ±1 LSB for the MCP3201-B version. The device supports SPI-compatible communication with chip select control. Its 8-pin PDIP package is easy to inspect, prototype, and replace during hardware development, although a surface-mount option may be preferable for compact production assemblies. The SAR architecture provides predictable conversion behavior suitable for process monitoring, control loops, and low-frequency instrumentation. The integrated sample-and-hold circuitry simplifies analog front-end design, but system accuracy still depends on the reference voltage, input-source impedance, grounding, and PCB layout. The MCP3201-BI/P is a single-channel converter, so applications requiring several simultaneous measurements will need multiplexing or additional converters. Typical applications include industrial sensor interfaces, potentiometer and thermistor measurement, process-control instrumentation, battery monitoring, embedded data logging, and general embedded-control boards. Its low-power operation and compact package are particularly useful when analog measurement must be added to a controller without using a higher-cost, higher-channel ADC. For a reliable design, decouple the supply near the device, keep analog traces short and away from switching nodes, and use an input source with sufficiently low impedance for the selected sample rate. Verify the maximum input voltage against the supply level and use the manufacturer datasheet for the complete electrical characteristics and recommended application circuit.
MCP3201-CI/P - 12-Bit SPI ADC, 2.7-5.5V | Microchip
The Microchip Technology MCP3201-CI/P is a 12-bit, one-input, successive-approximation-register analog-to-digital converter with an SPI serial interface, a 2.7 V to 5.5 V supply range, and an 8-pin PDIP package. It converts a single pseudo-differential analog input to a 12-bit digital result and supports embedded-control measurements where low power, compactness, and serial connectivity matter. An ADC is an interface IC that converts an analog voltage into a numeric value for processing by a microcontroller, DSP, or other digital controller. The MCP3201 belongs to the SAR ADC family rather than flash, pipeline, or sigma-delta converter families. Its SAR architecture performs successive comparison internally, while the on-board sample-and-hold circuitry captures the input voltage before conversion. The SPI-compatible interface allows the device to share a serialized bus with other peripherals when chip-select and signal-routing requirements are managed correctly. The verified manufacturer data identifies the device as a 12-bit ADC with one input, SAR conversion, SPI communication, a 2.7 V to 5.5 V operating range, and typical standby and active currents of 500 nA and 300 uA respectively. The single pseudo-differential input arrangement can measure a signal relative to a common reference, provided the input and reference voltages remain within the device limits. The compact 8-pin PDIP package supports through-hole assembly and is suited to prototypes, educational systems, industrial control boards, and low-channel-count sensor interfaces. The MCP3201-CI/P is designed for embedded-control applications requiring a modest number of analog measurements rather than high-throughput multichannel conversion. Its SPI-compatible serial interface makes it practical for systems with a microcontroller SPI master. Because the verified web data does not provide a complete pin-level table, input range, conversion-time value, or reference-voltage specification, those parameters remain marked for data completion rather than being inferred. Typical applications include analog sensor conditioning, temperature or potentiometer monitoring, battery or power-rail measurement, industrial control inputs, laboratory instrumentation, and microcontroller-based data-acquisition modules. The device should be paired with suitable analog conditioning, reference-voltage stability, decoupling, grounding, and an input voltage that stays within the manufacturer’s specified limits. SPI clocking and chip-select timing must follow the manufacturer datasheet, particularly when multiple SPI devices share the bus. For PCB implementation, keep the analog input trace short, place the device close to its decoupling network, and maintain a clean return path between the converter and its reference source. Confirm the pinout and exposed package details against the official datasheet before layout. The verified distributor listing also identifies the part as an 8-PDIP, while the manufacturer page describes the MCP3201 family and its SAR architecture. This page consolidates the verified manufacturer and distributor resources for MCP3201-CI/P, distinguishes documented facts from parameters requiring verification, and provides purchasing, comparison, design, and selection guidance for engineers evaluating a compact SPI ADC.
MCP3202-BI/P - 12-Bit Dual-Channel SPI ADC | Microchip
The Microchip Technology MCP3202-BI/P is a 12-bit successive-approximation analog-to-digital converter with two input channels, an SPI serial interface, and an 8-pin PDIP package. It operates from 2.7 V to 5.5 V and supports conversion rates up to 100 ksps at 5 V and 50 ksps at 2.7 V. The device also features on-chip sample-and-hold circuitry. What is a SAR ADC? A successive-approximation-register analog-to-digital converter samples an analog voltage and performs a sequence of internal comparisons to produce a digital code. The MCP3202 combines that conversion method with a sample-and-hold circuit and a serial interface, making it a compact data-conversion block for embedded control systems. Its two inputs can be configured as one pseudo-differential pair or as two single-ended channels according to the Microchip product documentation. Key features include 12-bit resolution, two analog inputs, SPI communication, and low power consumption. According to the manufacturer datasheet, typical standby current is 500 nA and typical active current is 375 µA. The interface supports SPI modes 0,0 and 1,1. The conversion-rate advantage is most pronounced at 5 V, where the 100 ksps rating is twice the 50 ksps rating available at the 2.7 V minimum supply. The SAR architecture produces one conversion result per sampled input, making the MCP3202 suitable for slow-to-medium-speed instrumentation rather than high-frequency waveform capture. Its simple serial protocol requires chip select, clock, data input, and data output connections, allowing it to share an SPI bus with other compatible peripherals when chip-select control is managed correctly. Typical uses include industrial sensor acquisition, potentiometer measurements, battery or power-supply monitoring, and embedded control systems. The MCP3202 is particularly useful where a microcontroller lacks an adequate analog input or where higher-resolution external measurement is required. Its low standby current also suits battery-operated equipment that spends substantial time between measurements. Designers should route analog inputs carefully, use a clean and stable reference supply, and observe the manufacturer’s input-voltage limits relative to the analog and digital supply levels. The SPI clock and chip-select signals should be controlled so that conversion timing and data framing remain deterministic. Because the MCP3202-BI/P is supplied in a PDIP package, it is most appropriate for through-hole designs, prototypes, and industrial assemblies rather than compact surface-mount layouts. This page consolidates the verified manufacturer specifications, sourced distributor listings, package information, and drop-in replacement considerations into a design-oriented reference for engineers evaluating the MCP3202-BI/P.
MCP3202-CI/P - 12-Bit Dual-Channel 100 kSPS ADC | Microchip
The Microchip Technology MCP3202-CI/P is a 12-bit, dual-channel successive-approximation analog-to-digital converter with a 100 kSPS conversion rate, SPI serial interface, and 8-pin PDIP package. The device supports analog inputs from 0 to 2.7 V or 0 to 5.5 V, depending on supply configuration, making it suitable for embedded measurement and control systems. A successive-approximation register ADC is an ADC architecture that determines the analog input by comparing it with a reference through successive approximation. An ADC belongs to the analog-to-digital conversion and data-acquisition hierarchy, while the MCP3202-CI/P is specifically designed for low-power embedded control applications. Its SPI interface allows a host microcontroller to configure input channels and retrieve digital results. The MCP3202-CI/P provides a 12-bit conversion resolution, two analog input channels, and a 100 kSPS sampling capability. The SAR architecture supports predictable conversion behavior for slowly changing sensor signals and general-purpose analog measurements. Its low-power operation and compact package help reduce system size and energy consumption in embedded designs. The SPI interface provides a straightforward connection to microcontroller peripherals, allowing command transfer and result readout over serial data lines. The dual-channel structure permits measurement of two analog signals without selecting two separate converter packages. Applications include temperature sensing, potentiometer reading, battery-voltage monitoring, industrial controls, and consumer embedded equipment. Designers should provide a stable reference voltage, adequate analog-input conditioning, and decoupling close to the device supply pins. Input signals must remain within the specified analog input range, and the selected SPI clock and conversion timing must comply with the manufacturer datasheet. The PDIP package also requires adequate through-hole spacing and appropriate lead clearance on the PCB. This page combines the verified Microchip product identity, distributor data, package information, lifecycle information, and practical engineering guidance. It is intended to help engineers evaluate MCP3202-CI/P for embedded analog measurement while separating verified specifications from parameters that require confirmation from the manufacturer datasheet.
MCP3204-CI/P - 12-Bit 4-Channel SPI ADC | Microchip
The Microchip Technology MCP3204-CI/P is a 12-bit, 4-channel successive-approximation-register analog-to-digital converter with a 100 kSPS sampling rate, a 2.7 V to 5.5 V supply range, and a 14-pin PDIP package. It combines four single-ended or two pseudo-differential inputs with an SPI serial interface and on-board sample-and-hold circuitry, making it suitable for embedded measurement and control systems. An ADC converts continuous analog voltages into digital codes for processing by a microcontroller or other digital controller. The MCP3204 belongs to the SAR ADC family, where a sampled input is converted through successive approximation rather than a continuously operating conversion process. Its four-channel input structure supports sensors, potentiometers, and control feedback while the SPI interface provides a compact connection to embedded processors. The verified manufacturer materials identify the MCP3204 as a 12-bit ADC with single-ended and pseudo-differential input configurations. The device family operates from 2.7 V to 5.5 V and provides typical standby and active currents of 500 nA and 320 µA, respectively. The MCP3204-CI/P is offered in a 14-pin PDIP package, while the same family is also available in 150 mil SOIC and TSSOP packages. Because it uses SAR architecture, the MCP3204 is appropriate for low-to-moderate-rate acquisition rather than high-speed waveform conversion. Its 100 kSPS capability permits periodic sensing of multiple analog channels, and the SPI interface allows the host controller to select an input, initiate conversion, and retrieve the result digitally. Exact timing, accuracy, and input-range details should be confirmed against the manufacturer datasheet for the selected production variant. Typical applications include industrial process monitoring, temperature and pressure sensor interfaces, battery or power-system measurement, and embedded control boards. In a sensor circuit, the analog output is applied to an input channel, the controller selects the channel through SPI, and the resulting 12-bit value is stored or processed in firmware. For layout and signal integrity, keep analog input traces short, provide a stable reference and supply arrangement, and avoid routing high-current switching paths adjacent to the analog inputs. Because the verified data does not provide complete package pin names, pricing tiers, or a confirmed lifecycle statement for this exact orderable part, those fields are explicitly marked where data is unavailable rather than inferred. This page combines the verified Microchip product identity, datasheet link, distributor references, and practical design guidance for engineers evaluating the MCP3204-CI/P in embedded analog measurement systems.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.