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ADS1100A7IDBVRG4 - 16-Bit Self-Calibrating Delta-Sigma ADC | Texas Instruments
ADS1100A7IDBVRG4

ADS1100A7IDBVRG4 - 16-Bit Self-Calibrating Delta-Sigma ADC | Texas Instruments

The Texas Instruments ADS1100A7IDBVRG4 is a 16-bit, self-calibrating, delta-sigma analog-to-digital converter with differential inputs, up to 16 bits of resolution, and a programmable gain amplifier offering gains of 1, 2, 4, or 8, packaged in a 6-pin SOT-23 (DBV). It operates from a single 2.7V to 5.5V supply, performs ratiometric conversions using the supply as the reference, and communicates via an I2C-compatible serial interface. An ADC (analog-to-digital converter) is an integrated circuit that converts continuous analog signals into discrete digital codes for processing by microcontrollers or DSPs. The delta-sigma (sigma-delta) architecture oversamples the input and uses noise-shaping to achieve high resolution and excellent noise rejection in low-frequency measurement applications such as sensor signal conditioning, industrial instrumentation, and portable measurement equipment. Key features of the ADS1100A7IDBVRG4 include no missing codes at 16-bit resolution, INL of 0.0125% of FSR maximum, continuous self-calibration that eliminates offset and gain drift over time and temperature, single-cycle conversion settling, low noise of 4 microvolts peak-to-peak, and a low quiescent current of 90 microamps typical. The programmable data rate of 8, 16, 32, or 128 samples per second allows the user to trade resolution for speed. The device integrates an oscillator, PGA, and I2C interface on-chip, eliminating the need for external components beyond bypass capacitors. The differential input topology rejects common-mode noise, making it well-suited for bridge sensors, thermocouples, and battery-cell monitoring. The internal clock and self-calibration simplify firmware and reduce long-term drift. Typical applications include portable instrumentation, weigh scales, industrial process control, consumer temperature monitoring, and battery-powered sensor nodes. The SOT-23-6 footprint enables integration into space-constrained designs, while the I2C interface supports multi-device bus configurations for scalable measurement systems. When designing with this part, note that the SOT-23-6 package requires careful PCB thermal management at higher data rates, and the I2C address is factory-programmed by part number suffix. Designers should consult the TI ADS1100 datasheet for the address selection options and self-calibration timing considerations. This page synthesizes distributor pricing, drop-in alternatives from the ADS1100 family, and practical design notes not found in the manufacturer datasheet.

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ADS1110A3IDBVR - 16-Bit 240SPS Delta-Sigma ADC | Texas Instruments
ADS1110A3IDBVR

ADS1110A3IDBVR - 16-Bit 240SPS Delta-Sigma ADC | Texas Instruments

The Texas Instruments ADS1110A3IDBVR is a precision, continuously self-calibrating 16-bit delta-sigma analog-to-digital converter with differential inputs, an internal 2.048V reference, an onboard PGA, and an I2C-compatible serial interface, all housed in a 6-pin SOT-23 package. It supports conversion rates of 15, 30, 60, and 240 samples per second, operates from a single 2.7V to 5.5V supply, and provides an input range of ±2.048V differentially when used with its internal reference. The SOT-23-6 footprint makes it one of the smallest self-contained 16-bit ADCs on the market. A delta-sigma ADC is a converter architecture that uses oversampling and digital filtering to achieve high resolution and excellent noise rejection, especially at low bandwidths. The ADS1110 belongs to the precision ADC category within data converters, sitting in the hierarchy: delta-sigma ADC -> ADC -> data converter -> signal chain IC -> semiconductor. The architecture's inherent noise-shaping makes it well suited for low-frequency, high-accuracy measurements such as temperature, strain-gauge, and battery monitoring, where successive-approximation (SAR) ADCs often trade off noise for speed. Key differentiating features include the integrated 2.048V reference with 5 ppm/°C typical drift, a programmable PGA with gains of 1, 2, 4, or 8, and a continuous self-calibration scheme that corrects internal offset and gain errors on every conversion. The device also integrates an internal oscillator, eliminating the need for an external clock, and offers four I2C slave addresses via the AD0 pin (only two of which are unique to the SOT-23-6 ADS1110A0/A1/A2/A3/A4/A5/A6/A7 family, depending on order code). From a technical perspective, the converter uses a third-order modulator followed by a digital sinc³ filter, providing simultaneous 50 Hz and 60 Hz mains rejection at the 15 SPS data rate. The internal PGA lets full-scale ranges be programmed from ±2.048V down to ±0.256V, allowing direct interfacing with low-amplitude sensors such as thermocouples, bridge outputs, and shunt currents without external instrumentation amplifiers. Typical applications include portable instrumentation, weigh scales, industrial process control, smart transmitters, consumer electronics, and factory automation. It is also frequently used in battery monitoring and fuel gauging thanks to its low supply current and differential input structure. When designing with the ADS1110, pay attention to the I2C pull-up resistor selection and the input common-mode range. The device's inputs are true differential, but the absolute voltage on each input must remain between GND and VDD, which constrains how the part can be interfaced to bipolar sensors. This page synthesizes distributor pricing, verified same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ADS1110A3IDBVRG4 - 16-Bit 240SPS I2C Delta-Sigma ADC | Texas Instruments
ADS1110A3IDBVRG4

ADS1110A3IDBVRG4 - 16-Bit 240SPS I2C Delta-Sigma ADC | Texas Instruments

The Texas Instruments ADS1110A3IDBVRG4 is a precision, continuously self-calibrating 16-bit delta-sigma analog-to-digital converter with differential inputs, an integrated 2.048V reference, programmable gain amplifier (PGA), onboard oscillator, and an I2C-compatible serial interface, packaged in a 6-pin SOT-23 (DBV). The "A3" speed grade sets the maximum data rate at 15 SPS (samples per second), optimizing noise-free resolution at low conversion rates. The device operates from a single 2.7V to 5.5V supply and draws only 0.7 mW of power at full speed, drawing as little as 1.5 µA in power-down mode for battery-friendly operation. A delta-sigma ADC is a converter that uses oversampling and noise-shaping to deliver high resolution (here, 16 bits) at the cost of raw sample rate, making it ideal for measuring slow, high-precision DC signals such as sensor outputs, strain gauges, thermocouples, and bridge-style transducers. The ADS1110 sits in the data-converter sub-tree of TI's precision signal-chain portfolio (ADC -> delta-sigma ADC -> low-power precision ADC -> data acquisition IC) and combines three traditionally external functions - reference, PGA, and clock - inside a 6-pin SOT-23, eliminating the need for external analog components and shrinking the analog front-end footprint by more than 50% compared to a discrete ADC + external reference + op-amp design. Key features of this A3 variant include the 15 SPS maximum output data rate, integrated PGA with 8x gain (compared to 1x on the A0 grade), ±2.048V differential input range via the internal reference, eight I2C slave addresses for multi-channel I/O expansion, and four user-selectable data rates (15, 30, 60, 240 SPS). The differential input and onboard reference maximize dynamic range while minimizing sensitivity to ground-loop noise, and the SOT-23-6 package supports reflow soldering on standard RoHS-compliant SMT lines. Typical applications include portable instrumentation, weigh scales, factory automation sensor front-ends, handheld medical monitors, industrial process control loops, and battery-powered IoT endpoints that need a small, low-power, high-resolution ADC on a tight PCB budget. The integrated reference, PGA, and oscillator drastically reduce external component count. When designing with the ADS1110A3IDBVRG4, place a 0.1 µF decoupling capacitor close to VDD (pin 6) and a 10 µF bulk capacitor at the board supply. Use SDA/SCL pull-ups sized to the I2C bus capacitance, and add a small RC filter on the analog inputs if the source impedance exceeds 1 kΩ. The internal PGA with 8x gain enables direct connection to low-output sensors such as thermocouples and strain gauges without a front-end instrumentation amplifier.

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ADS1110A6IDBVR - 16-Bit Delta-Sigma ADC with PGA, SOT-23-6 | Texas Instruments
ADS1110A6IDBVR

ADS1110A6IDBVR - 16-Bit Delta-Sigma ADC with PGA, SOT-23-6 | Texas Instruments

The Texas Instruments ADS1110A6IDBVR is a 16-bit precision, continuously self-calibrating delta-sigma analog-to-digital converter (ADC) with differential inputs and a fixed I2C-compatible slave address (A6), housed in a 6-pin SOT-23 (DBV) package. It integrates an onboard 2.048 V low-drift reference, a programmable gain amplifier (PGA) with gains of 1, 2, 4, 8, and a sigma-delta modulator that delivers up to 16 bits of resolution at sample rates of 15, 30, 60, or 240 SPS. What is a Delta-Sigma ADC? A delta-sigma (sigma-delta) ADC is a type of analog-to-digital converter that uses oversampling and noise-shaping to achieve high resolution. Delta-sigma ADCs sit within the broader ADC hierarchy: ADC -> data converter -> data acquisition IC -> signal chain -> semiconductor. Compared to successive-approximation register (SAR) ADCs, delta-sigma converters offer superior noise performance for low-bandwidth, high-precision measurements such as sensors, weigh scales, and instrumentation. Key features include an onboard 2.048 V reference with 5 ppm/C typical drift, an I2C-compatible 2-wire serial interface supporting Standard and Fast modes, self-calibration of offset and gain on every conversion, and a single-supply operation from 2.7 V to 5.5 V. The PGA allows full-scale differential input ranges of +/-2.048 V down to +/-0.256 V, enabling direct interface to low-output sensors such as thermocouples and strain gauges. The SOT-23-6 package measures approximately 2.9 mm x 1.6 mm with a low thermal resistance suitable for handheld and space-constrained designs. The architecture is a third-order chopper-stabilized delta-sigma modulator followed by a digital SINC4 filter, achieving effective resolution of up to 16 bits noise-free at the slowest data rate. The self-calibration sequence runs automatically at power-on and on demand, eliminating offset and gain drift over temperature. The fixed I2C address option encoded in the part number (A6 = 0x90/0x91) eliminates external address-pin strapping in multi-channel systems that already use ADS1110A0/A1/A2/A3 variants. Typical applications include portable instrumentation, weigh scales, industrial process control, consumer weighing and force-sensing products, temperature measurement with thermocouples or RTDs, and battery monitoring. The combination of small footprint, low power (typically 240 uA at 5 V), and high resolution makes it suitable for handheld battery-powered test equipment, IoT sensor nodes, and factory automation modules. A key design consideration is the input common-mode range: the differential input must remain within 0 V to VDD when PGA gain is set to 1, and the PGA output cannot exceed the supply rails. For highest accuracy, use a clean low-noise supply and bypass VDD with both a 0.1 uF ceramic and a 10 uF tantalum or ceramic capacitor placed close to the supply pin. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select and qualify the ADS1110A6IDBVR quickly.

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ADS1110A6IDBVRG4 - 16-Bit 240SPS Delta-Sigma ADC | Texas Instruments
ADS1110A6IDBVRG4

ADS1110A6IDBVRG4 - 16-Bit 240SPS Delta-Sigma ADC | Texas Instruments

The Texas Instruments ADS1110A6IDBVRG4 is a 16-bit, 240-SPS, single-channel delta-sigma analog-to-digital converter (ADC) with differential inputs, an integrated 2.048 V reference, an on-chip programmable gain amplifier (PGA), an internal oscillator, and an I2C-compatible serial interface, all housed in a 6-pin SOT-23 package. The SOT-23-6 footprint makes it one of the smallest precision ADCs available for industrial-temperature instrumentation. A delta-sigma ADC is a type of analog-to-digital converter that uses oversampling and noise-shaping to achieve high resolution at low sample rates. The ADS1110's sigma-delta modulator front end, combined with a digital SINC4 filter, delivers true 16-bit noise-free resolution. Because delta-sigma converters trade speed for resolution, the ADS1110 is optimized for precision DC and low-frequency measurements rather than audio or wideband signal acquisition, where successive-approximation register (SAR) ADCs would be more appropriate. The part integrates a PGA with gains of 1, 2, 4, or 8, which lets small differential signals (down to ±15 mV full scale) be digitized directly without external front-end amplification. Key features include differential input ranges of ±2.048 V, ±1.024 V, ±0.512 V, and ±0.256 V, 15 / 30 / 60 / 240 SPS selectable data rates, an integrated 2.048 V low-drift reference, and a single-supply 2.7 V to 5.5 V analog/digital supply range. The converter is continuously self-calibrating, includes an on-chip oscillator (no external crystal required), and offers four I2C slave addresses. Per the manufacturer datasheet, the part dissipates only 0.9 mW at 240 SPS on a 3 V supply, enabling battery-friendly designs. The architecture combines a switched-capacitor delta-sigma modulator with a third-order digital filter, achieving >84 dB of power-supply rejection at the modulator and excellent common-mode noise immunity, both essential for industrial sensor measurements. The internal reference drift is typically 5 ppm/°C, and the PGA eliminates the gain-error budget of an external instrumentation amplifier in many thermocouple and bridge-sensor applications. Typical applications include portable instrumentation, temperature measurement with thermocouples or RTDs, strain-gauge and load-cell readouts, factory-multimeter controllers, battery monitoring, and any space-constrained precision measurement node. Designers benefit from the ADS1110A6IDBVRG4's small footprint, self-contained approach (reference + oscillator + PGA), and low power draw when designing wearables, IoT edge nodes, and industrial sensor front ends. When designing with this part, use a 0.1 µF decoupling capacitor on VDD placed within 5 mm of the pin, keep analog and digital grounds joined at a single star point under the IC, and choose the lowest data rate that meets system bandwidth to maximize effective resolution. A 10 nF bypass on AIN+/AIN- improves common-mode noise rejection in noisy environments.

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ADS1115IDGSR - 16-Bit I2C ADC with PGA | TI | Sensor Nodes
ADS1115IDGSR

ADS1115IDGSR - 16-Bit I2C ADC with PGA | TI | Sensor Nodes

The Texas Instruments ADS1115IDGSR is a precision, low-power, 16-bit delta-sigma analog-to-digital converter (ADC) with an I2C-compatible interface, supplied in a 10-pin VSSOP (DGS) package. It integrates a programmable gain amplifier (PGA), a low-drift voltage reference, an internal oscillator, and a digital comparator, enabling compact high-resolution measurement systems with minimal external components. An analog-to-digital converter (ADC) is a mixed-signal device that translates continuous analog voltages into discrete digital codes that microcontrollers and processors can interpret. The ADS1115 operates as a sigma-delta ADC, using oversampling and noise shaping to achieve 16-bit resolution at conversion rates up to 860 samples per second (SPS). Within the signal-chain hierarchy, it belongs to precision data-acquisition ICs and eliminates the need for an external reference or clock source. Key features include four single-ended or two differential input channels via an input multiplexer, a PGA with gains from 2/3 to 16 V/V, an I2C interface supporting four bus addresses (0x48 through 0x4B), and an onboard comparator with ALERT/conversion-ready output. The device operates from a 2.0V to 5.5V supply over -40C to +125C, drawing only about 150 uA of supply current in continuous mode. The ADS111x architecture uses a delta-sigma modulator followed by a digital decimation filter for high accuracy at low power. The integrated PGA amplifies small sensor signals before conversion to improve effective resolution, while the low-drift internal reference keeps industrial measurements stable over time and temperature. The lead-free VSSOP-10 package (3.00mm width) suits space-constrained PCB layouts. Typical applications include battery voltage and current monitoring, portable instrumentation, IoT sensor nodes, temperature and pressure measurement, and industrial process control. Because no external reference or oscillator is required, the ADS1115IDGSR reduces BOM complexity in designs needing 16-bit accuracy on an I2C bus. For best performance, place a 0.1uF decoupling capacitor close to VDD and use the ADDR pin to avoid I2C bus conflicts. Keep source impedance low enough to charge the sampling capacitor; a low-noise LDO such as TPS7A26-Q1 further improves measurement stability.

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ADS1115IDGSR-Q1 - 16-Bit I2C ADC, 860SPS | Texas Instruments
ADS1115IDGSR-Q1

ADS1115IDGSR-Q1 - 16-Bit I2C ADC, 860SPS | Texas Instruments

The Texas Instruments ADS1115IDGSR-Q1 is a precision, low-power, 16-bit, I2C-compatible delta-sigma analog-to-digital converter (ADC) in a 10-pin VSSOP (DGS) package, qualified to AEC-Q100 for automotive applications. It integrates a 4-channel input multiplexer, a programmable gain amplifier (PGA), a low-drift internal voltage reference, an internal oscillator, and a digital comparator, enabling compact single-chip signal acquisition. An ADC (analog-to-digital converter) is a mixed-signal device that converts continuous analog voltages into discrete digital values. Within the converter hierarchy, the ADS1115 is a delta-sigma (over-sampling) ADC, a topology prized for high resolution and low noise at modest sample rates, sitting above SAR ADCs in resolution and below integrating ADCs in speed. It connects to any host MCU or processor via an I2C bus, making it a power-management and sensor-measurement building block. Key features include 16-bit resolution with up to 860 samples per second (SPS) conversion rate, an I2C interface supporting four selectable addresses, and a PGA with gain settings that allow full-scale ranges down to the +/-256 mV range for direct connection of small signals. The integrated digital comparator supports alert-based operation, reducing host polling overhead. Conversion rate and duty cycling support low average power consumption in battery-backed systems. The delta-sigma architecture oversamples the input and applies digital decimation filtering, yielding excellent linearity and noise performance without external precision components. Because reference, oscillator, and PGA are on-chip, external BOM count stays minimal and channel-to-channel measurements remain consistent. Typical applications include automotive battery-voltage and current monitoring, sensor measurement in body and chassis modules, battery management systems (BMS) auxiliary sensing, factory automation analog input modules, and precision portable instrumentation. The Q1 qualification makes it a natural fit alongside TI automotive power and monitoring devices. Design tip: the input pins must not exceed VDD + 0.3V; for measuring rails above the supply, use a resistive divider and match the source impedance to the PGA input requirements to preserve accuracy.

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ADS1118IDGSR - 16-Bit 860-SPS 4-Channel ADC | TI
ADS1118IDGSR

ADS1118IDGSR - 16-Bit 860-SPS 4-Channel ADC | TI

The Texas Instruments ADS1118IDGSR is a 16-bit, 860-SPS, 4-channel delta-sigma analog-to-digital converter with a programmable gain amplifier, integrated voltage reference, oscillator, temperature sensor, and SPI interface, housed in a 10-VSSOP package. It is designed for low-power precision measurement systems and supports analog sensor inputs as well as temperature sensing. An ADC converts continuous analog voltage into a numeric value for processing, measurement, or control. The ADS1118 belongs to the delta-sigma ADC class, where an internal modulator and digital filter shape the conversion result. Its integrated PGA allows low-level sensor signals to be amplified before conversion, while the internal reference, oscillator, and temperature sensor reduce the number of external support components required in compact measurement designs. The main headline specifications are 16-bit resolution, conversion rates up to 860 samples per second, four analog input channels, and operation across a -40°C to +125°C temperature range. The device supports SPI-compatible serial communication and is offered in a small 10-pin VSSOP package. The integrated reference and temperature sensor are especially useful for sensor measurements, thermocouple-related monitoring, and systems requiring a compact analog front end. The delta-sigma architecture provides high resolution for low-frequency and slowly changing signals, while the programmable gain amplifier supports a range of input amplitudes. The internal oscillator allows operation without an external clock, which can simplify PCB design and reduce component count. The ADC is suitable when deterministic digital readout, modest conversion speed, and low power consumption are more important than very high sample rates. Typical applications include industrial process monitoring, temperature sensing, pressure and strain-signal acquisition, portable instrumentation, environmental measurement, and low-power embedded sensing. The integrated temperature sensor can provide a local temperature reading, while the analog channels support external sensors such as thermistors, resistive bridges, potentiometers, and other slowly varying analog sources. A key design consideration is analog signal conditioning and PCB layout. The sensor input must stay within the ADC input range, and the PGA gain must be selected so that the conditioned signal uses the converter’s available resolution without overloading the input. Decoupling capacitors should be placed close to the power pins, and the analog and digital return paths should be arranged to minimize noise coupling into the measurement channels. The 860-SPS maximum rate also means that applications requiring faster sampling need a different ADC architecture. This page combines the manufacturer’s published ADS1118 features, distributor pricing and availability signals, package information, application guidance, and drop-in replacement analysis for engineers evaluating the ADS1118IDGSR.

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ADS1118QDGSRQ1 - 16-bit 860SPS Automotive Delta-Sigma ADC | TI
ADS1118QDGSRQ1

ADS1118QDGSRQ1 - 16-bit 860SPS Automotive Delta-Sigma ADC | TI

The Texas Instruments ADS1118QDGSRQ1 is an automotive-qualified, precision, low-power, 16-bit, 860-SPS, 4-channel, delta-sigma analog-to-digital converter (ADC) that integrates a programmable gain amplifier (PGA), voltage reference, internal oscillator, high-accuracy temperature sensor, and an SPI-compatible serial interface in a 10-pin VSSOP (DGS) package. It provides 4 single-ended or 2 differential input channels, supports a wide 2.0 V to 5.5 V analog supply range, and delivers up to 16 bits of effective resolution across data rates from 8 SPS to 860 SPS, with an integrated PGA offering gains of 1, 2, 4, 8, 16, 32, 64, and 128 to accommodate low-level sensor signals. A delta-sigma ADC is a type of oversampling converter that uses noise shaping and digital filtering to achieve high resolution and excellent noise rejection at low frequencies. In the broader taxonomy it sits under: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor. The ADS1118-Q1 is the automotive (-Q1) variant of the industrial ADS1118 family, designed for AEC-Q100 qualified applications where robust thermal, EMI, and reliability performance is mandatory. Key features include an integrated low-drift voltage reference (typically 4.096 V with 0.01 %/°C drift), an on-chip temperature sensor with 0.5 °C typical accuracy, a low quiescent current of typically 150 µA in continuous-conversion mode, and a power-down current below 1 µA. The internal PGA eliminates the requirement for an external instrumentation front-end in many bridge sensor applications. The SPI-compatible interface supports up to 4-wire connections and allows daisy-chaining of multiple devices. Typical applications include automotive sensor monitoring (battery management systems, cabin climate, occupant detection), industrial process control (4-20 mA loop digitization, RTD/thermocouple digitization), portable instrumentation, and temperature-compensated measurement chains. The wide supply range and small footprint make it ideal for space-constrained designs. When designing with this device, place the supply decoupling capacitor within 5 mm of the AVDD pin and keep digital traces away from analog inputs. The -Q1 suffix guarantees operation from -40 °C to +125 °C and AEC-Q100 Grade 1 qualification for automotive use cases.

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ADS114S08BIPBSR - 16-Bit 4kSPS 12-Ch Delta-Sigma ADC | TI
ADS114S08BIPBSR

ADS114S08BIPBSR - 16-Bit 4kSPS 12-Ch Delta-Sigma ADC | TI

The Texas Instruments ADS114S08BIPBSR is a 16-bit, 4-kSPS, 12-channel delta-sigma (ΔΣ) analog-to-digital converter with an integrated programmable gain amplifier (PGA) and voltage reference, supplied in a 32-pin TQFP (PBS) package measuring 5x5 mm. It is optimized for low-cost sensor measurement applications and consumes as little as 280 µA of supply current, which makes it appropriate for battery-powered or thermally constrained systems. The integrated PGA accepts gains from 1 to 128 V/V, allowing direct interface to low-output sensors such as load cells, thermocouples, and bridge-type pressure transducers without external amplification. A delta-sigma ADC is a noise-shaping converter that oversamples the analog input at a rate many times higher than the Nyquist frequency of the output data rate, then shapes quantization noise out of the baseband and decimates the bitstream to produce a high-resolution result. Within the broader data-converter hierarchy, the ADS114S08B occupies the precision-low-speed node between successive-approximation register (SAR) ADCs and wider-bandwidth delta-sigma parts, positioning it as a power management and signal-chain IC for measurement-grade instrumentation. Key specifications include a maximum data rate of 4 kSPS, simultaneous 50 Hz / 60 Hz line-frequency rejection at data rates of 20 SPS or lower, a low-latency digital filter, on-chip temperature sensor, and an SPI-compatible serial interface. The internal voltage reference is selectable between an internal 2.5 V source and an external reference, supporting ratiometric and absolute measurement topologies. Twelve analog input channels can be configured as differential, pseudo-differential, or single-ended, providing flexibility for multi-sensor designs. The device architecture pairs a chopper-stabilized input front end with a second-order delta-sigma modulator and a programmable SINC3 digital filter. Chopper stabilization reduces the 1/f noise corner and corrects input-offset drift over temperature, while the SINC3 filter gives first-cycle conversion latency at low data rates, useful for closed-loop control applications. The internal PGA gain of up to 128 V/V combined with the low input-referred noise allows the ADC to resolve microvolt-level signals directly. Typical applications include weigh scales, strain-gauge bridge sensors, thermocouple temperature measurement, RTD signal conditioning, industrial process-control analog input modules, and portable medical instrumentation such as blood-pressure monitors and body-composition analyzers. The wide analog supply range of 2.7 V to 5.25 V and digital supply range of 2.7 V to 3.6 V let it pair directly with 3.3 V MCUs and 5 V analog signal chains. When designing with this ADC, evaluate total input-referred noise against the target data rate because the SINC3 filter trades bandwidth for resolution - selecting a 2.5 SPS or 20 SPS output rate improves effective resolution to 16-bit noise-free codes for weigh-scale applications. Decouple AVDD and DVDD with 1 µF and 100 nF ceramic capacitors placed within 2 mm of the supply pins to keep digital switching noise out of the modulator. This page synthesizes distributor pricing, same-brand drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet, providing engineers with a single reference for selection, replacement, and PCB layout decisions.

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ADS114S08BIRHBR - 16-bit 4kSPS 12-ch Delta-Sigma ADC | Texas Instruments
ADS114S08BIRHBR

ADS114S08BIRHBR - 16-bit 4kSPS 12-ch Delta-Sigma ADC | Texas Instruments

The Texas Instruments ADS114S08BIRHBR is a 16-bit, 4-kSPS, 12-channel, delta-sigma analog-to-digital converter with integrated PGA and 2.5 V voltage reference, housed in a 32-pin VQFN (RHB) 5x5 mm package with exposed thermal pad. It delivers 16-bit resolution at up to 4 kSPS data rate, consumes as little as 280 µA, and provides programmable gain from 1 to 128. A delta-sigma ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution at low sample rates. Delta-sigma ADCs are a subset of integrating ADCs, which fall under the broader category of data converters, mixed-signal ICs, and finally semiconductors. The ADS114S08B sits in this taxonomy between precision SAR ADCs (single-shot, medium speed) and wideband pipeline ADCs (high speed, lower resolution). Delta-sigma converters dominate low-frequency precision measurement - sensor signal conditioning, weigh scales, temperature, strain gauge bridges - because their noise-shaping topology yields 16-24 effective bits at bandwidths below a few kHz. Key features include 12 analog input channels with low-noise PGA gains of 1, 2, 4, 8, 16, 32, 64, and 128, programmable data rates from 2.5 SPS to 4 kSPS, simultaneous 50-Hz and 60-Hz line rejection at data rates up to 20 SPS, an integrated 2.5 V low-drift voltage reference, and two matched excitation current sources for RTD and bridge sensor biasing. The device offers low-latency digital filter response, an SPI-compatible serial data interface, and an operating supply current as low as 280 µA in low-power mode. Architecture-wise, the ADS114S08B uses a 2nd-order delta-sigma modulator followed by a programmable SINC + FIR digital decimation filter. The modulator clock is derived from an internal oscillator; the digital filter provides both single-cycle and FIR modes. The integrated PGA delivers gains up to 128 V/V, allowing direct interface to thermocouples and strain-gauge bridges without external instrumentation amplifiers. The integrated low-drift 2.5 V reference eliminates an external reference IC for cost-sensitive designs. Typical applications include weigh scales and load cell digitizers, RTD and thermocouple temperature acquisition, strain-gauge bridge measurement, industrial process control analog input modules, factory automation sensor interfaces, and battery-powered portable sensor instruments. The 280 µA quiescent current makes it well suited for battery-powered or loop-powered 4-20 mA sensor transmitters where total analog-section power budget is constrained. When designing with the ADS114S08B, allocate GPIO on the host microcontroller for /DRDY, /CS, SCLK, DIN, DOUT/DRDY, and /RESET. Use a clean low-noise analog supply with a ferrite bead separating it from the digital 3.3 V rail. Place the 0.10 µF + 10 µF decoupling pair within 5 mm of the AVDD pin. The exposed thermal pad (pin 33) must be soldered to a continuous analog ground plane for thermal and EMI performance.

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ADS1210P - 24-Bit Delta-Sigma ADC 16kSPS, DIP-18 | Texas Instruments
ADS1210P

ADS1210P - 24-Bit Delta-Sigma ADC 16kSPS, DIP-18 | Texas Instruments

The Texas Instruments ADS1210P is a precision 24-bit delta-sigma analog-to-digital converter with 1 differential input channel, 23 bits of effective resolution at 10 Hz, and 20 bits at 1000 Hz. It provides up to 16 kSPS output data rate and is housed in an 18-pin PDIP (through-hole) package. The device operates from a single +5 V analog supply and a separate digital supply, with low noise and a programmable gain amplifier (PGA) on-chip. A delta-sigma ADC is a type of oversampling converter that achieves very high resolution by trading speed for noise averaging. The ADS1210P belongs to the precision-measurement ADC family, within the broader hierarchy: ADC -> data converter -> signal chain IC -> semiconductor. Its combination of a wide dynamic range, programmable gain, and integrated flexible serial interface (SPI/SSI-compatible with 2-wire mode) makes it suitable for instrumentation-grade front ends. Key features include: 23-bit effective resolution at 10 Hz, 20 bits at 1000 Hz, differential analog inputs, programmable gain amplifier with gain up to 128, programmable cutoff frequency, on-chip calibration, and a flexible SPI-compatible SSI interface that also supports a 2-wire mode. These features allow the ADS1210P to replace a complete discrete precision ADC front end with a single IC, simplifying high-accuracy measurement designs. Typical applications include weigh scales (load-cell digitizers), industrial process control sensors (pressure, strain, temperature via RTD/thermocouple conditioning), precision transducer readouts (e.g., weighing platforms, flow meters), and laboratory instrumentation. The internal PGA and single-cycle conversion settling make it well suited to multiplexed low-frequency, high-resolution systems. When designing with this part, observe careful grounding between the analog AVSS/AVDD pins and the digital DVSS/DVDD pins, and place the reference and input decoupling capacitors close to the package. The ADS1210/ADS1211 share a common footprint but differ on pins 1-3 and 22-24, so a layout that ties unused inputs to analog ground is needed for ADS1211 drop-in. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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ADS1210PG4 - 24-Bit Delta-Sigma ADC, 18-PDIP | Texas Instruments
ADS1210PG4

ADS1210PG4 - 24-Bit Delta-Sigma ADC, 18-PDIP | Texas Instruments

The Texas Instruments ADS1210PG4 is a 24-bit precision delta-sigma analog-to-digital converter that operates from a single +5V supply, packaged in an 18-pin PDIP (through-hole) outline and rated for the -40C to +85C industrial temperature range. It delivers up to 16 kS/s effective sampling, supports differential bipolar/unipolar inputs, integrates a programmable gain amplifier (PGA), and exposes a serial SPI-compatible interface for microcontroller or DSP host connection. The delta-sigma modulator is followed by a digital SINC^4 decimation filter, giving 23-bit effective resolution at a 10 Hz data rate and 20-bit effective resolution up to 1 kHz, with 22 bits of no-missing-code performance. An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts a continuous analog voltage into a discrete digital code; the delta-sigma architecture in particular uses oversampling and noise-shaping to push quantization noise away from the signal band of interest, then decimates to a lower-rate high-resolution output. The ADS1210PG4 sits in the precision data-acquisition tier, well below SAR ADCs in raw speed but well above them in noise-free resolution, making it the device of choice when measuring low-frequency transducer signals such as strain gauges, RTDs, thermocouples, and weigh-scale load cells. Key features include a differential front end with wide common-mode range, self-calibration of offset and gain, on-chip input buffers, and a flexible SINC^4 digital filter with programmable sample rates from 1 Hz to 16 kHz via an external reference and clock. The integrated PGA provides gains from 1 to 16 in binary steps, allowing small transducer signals (millivolts) to be amplified before conversion and eliminating the need for an external instrumentation amp in many designs. Calibration modes (self, system, background) compensate for drift and PC-board leakage. Typical applications include industrial weighing scales, process instrumentation (pressure, flow, temperature), smart sensor transmitters, portable medical instrumentation, and laboratory data loggers where single-supply +5V operation, high resolution, and a parallel-through-hole footprint simplify PCB and firmware design. When designing with the ADS1210PG4, treat the analog and digital grounds as split nets joined at a single point beneath the IC, place the 1 nF to 10 uF decoupling capacitors as close as possible to AVDD/DVDD pins, and drive the modulator clock with a clean low-jitter source. The 'G4' suffix denotes the Pb-free (RoHS) finish designation; the underlying silicon is identical to the legacy ADS1210P. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes that complement rather than duplicate the manufacturer datasheet.

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ADS1211 - 24-Bit Delta-Sigma ADC, 4-Channel | Texas Instruments
ADS1211

ADS1211 - 24-Bit Delta-Sigma ADC, 4-Channel | Texas Instruments

The Texas Instruments ADS1211 is a precision, wide dynamic range, delta-sigma analog-to-digital converter (ADC) with 24-bit resolution, operating from a single +5V supply. It features a 4-channel input multiplexer and is available in 24-pin DIP, 24-lead SOIC, and 28-lead SSOP packages, targeting high-resolution measurement in smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation. A delta-sigma ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve very high resolution, typically 16 to 24 bits. It is ideal for low-frequency, high-precision measurement where accuracy matters more than conversion speed. The ADS1211 belongs to the precision delta-sigma ADC family within the broader data-converter hierarchy, bridging analog sensors and digital processing systems. Key features include 24-bit resolution (23 bits effective at 10 Hz output rate, 20 bits effective at 1000 Hz), differential inputs, a programmable gain amplifier (PGA), and a programmable digital filter cut-off frequency. The flexible synchronous serial interface is SPI compatible and offers a two-wire control mode for low-cost isolation. Self-calibration ensures accuracy over time and temperature. Architecturally, the ADS1211 combines a delta-sigma modulator with an on-chip digital filter, producing high-resolution results from a single +5V supply at approximately 12mW power dissipation, suiting portable and battery-powered designs. The VBIAS reference-bias output supports biased sensors such as bridge transducers. Typical applications include smart transmitters, industrial process control, weigh scales, and chromatography instruments. The integrated 4-channel multiplexer lets multiple sensors share one ADC, cutting system cost and board area. When designing with the ADS1211, decouple analog and digital supplies carefully, use a low-noise stable reference to realize full 24-bit performance, and configure SPI timing to match the host microcontroller. Prices as of 2026-08-30; verify current distributor stock.

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ADS1212PG4 - 22-Bit Delta-Sigma ADC, 18-PDIP | Texas Instruments
ADS1212PG4

ADS1212PG4 - 22-Bit Delta-Sigma ADC, 18-PDIP | Texas Instruments

The Texas Instruments ADS1212PG4 is a 22-bit, single-channel, delta-sigma analog-to-digital converter (ADC) housed in an 18-pin PDIP through-hole package. The device operates from a single 5V analog supply, delivers no missing codes at 22 bits, and provides 20 bits of effective resolution at a 10 Hz data rate while still maintaining 16 effective bits at 1 kHz. The architecture combines a fourth-order modulator with a programmable gain amplifier (PGA) and a digital filter, drawing only 1.4 mW of power in normal operation, which makes the part well-suited for low-power instrumentation front-ends. A delta-sigma ADC is a type of oversampling converter that trades speed for resolution by pushing quantization noise to high frequencies, where it is filtered out by a digital decimation filter. The ADS1212PG4 sits within the broader hierarchy of analog-to-digital converters -> precision ADCs -> delta-sigma ADCs -> data-acquisition ICs, and belongs to the power-management CMOS family of mixed-signal products. This category of converter is widely chosen over successive-approximation (SAR) ADCs in slow, high-resolution applications such as weigh scales, strain-gauge bridges, and temperature measurement, where noise rejection at 50 Hz and 60 Hz mains frequencies is required. Key features include 22-bit resolution with no missing codes, a low 1.4 mW power dissipation, differential analog inputs, an on-chip programmable gain amplifier with gain settings typically from 1 to 16, and an SPI-compatible synchronous serial interface (SSI) for host communication. The modulator sampling rate and digital filter characteristics are user-programmable through the serial interface, allowing trade-offs between resolution, data rate, and noise. An on-chip calibration engine supports both self-calibration and system-calibration modes to correct offset and gain errors. Typical applications include industrial weigh scales, precision load-cell readouts, RTD and thermocouple temperature measurement, chromatography and blood-gas analyzers, and other low-frequency precision instrumentation where wide dynamic range is needed. The combination of 22-bit resolution and a built-in PGA allows direct connection to low-output transducers without external instrumentation amplifiers. When designing with the ADS1212PG4, observe the decoupling requirements of the analog and digital sections: a clean 5V rail with separate AVCC and DVCC pins must be tied together at a single point with proper decoupling. The differential input pair must be kept away from digital switching traces on the PCB to preserve CMRR. Because the part is in a PDIP through-hole package, it is typically chosen for prototyping and industrial backplanes rather than high-density SMT designs. This page synthesizes distributor pricing, drop-in alternative listings, and engineering design notes not collected in a single place in the manufacturer datasheet.

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ADS1213EG4 - 22-bit Delta-Sigma ADC, 4-Ch, SPI | Texas Instruments
ADS1213EG4

ADS1213EG4 - 22-bit Delta-Sigma ADC, 4-Ch, SPI | Texas Instruments

The Texas Instruments ADS1213EG4 is a precision 22-bit delta-sigma analog-to-digital converter with 4 input channels, an integrated programmable gain amplifier (PGA), and on-chip voltage reference, packaged in a 28-pin SSOP. It operates from a single +5V supply, delivers up to 6.25 kSPS output data rate, and achieves 22 bits of no-missing-codes performance with 20 bits effective resolution at 10 Hz, dropping to 16 bits at 1 kHz. Low power consumption of 1.4 mW makes it suitable for battery-powered and industrial instrumentation systems. A delta-sigma ADC (also called sigma-delta or oversampling converter) is a converter architecture that trades raw speed for resolution by oversampling the input and using digital filtering to shape quantization noise out of the signal band. Within the broader hierarchy, a delta-sigma ADC is a subset of precision ADC > data converter > signal chain IC > semiconductor. Delta-sigma ADCs dominate high-resolution, low-frequency measurement because their inherent noise shaping rejects broadband noise that would otherwise limit resolution. Key features of the ADS1213EG4 include a programmable gain amplifier with gain settings from 1 to 16, a synchronous SPI-compatible serial interface with optional two-wire mode for galvanic isolation, differential input architecture for direct transducer connection, and an internal 4-channel input multiplexer for multi-channel scanning. The on-chip reference and self-calibration functions remove most offset and gain errors at the system level, simplifying firmware burden. The device uses a fourth-order delta-sigma modulator with a switched-capacitor front end, followed by a decimation-by-64 to 2048 digital filter. Effective resolution is a function of data rate, PGA gain, and reference voltage, so designers should consult the ADS1212/ADS1213 datasheet noise tables when matching dynamic range to a target transducer output. Typical applications include industrial process control weigh scales, direct thermocouple and RTD temperature measurement, multi-channel pressure transducers, instrumentation front ends, and precision sensor signal conditioning. The combination of low power, integrated PGA, and on-chip reference makes the ADS1213EG4 well suited to remote or handheld measurement nodes where PCB area is at a premium. When designing with this part, pay close attention to analog supply decoupling and the differential input common-mode range. Use a low-thermal-EMF ground layout around the analog inputs; even a few nanovolts of stray thermocouple voltage between the input traces and the reference ground can corrupt 22-bit measurements. This page synthesizes distributor stock and pricing, drop-in alternative cross-references, and engineering design notes that go beyond what the manufacturer datasheet alone provides, helping engineers both evaluate and qualify the ADS1213EG4 for production designs.

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ADS1217 - 8-Channel 24-Bit Delta-Sigma ADC | Texas Instruments
ADS1217

ADS1217 - 8-Channel 24-Bit Delta-Sigma ADC | Texas Instruments

The ADS1217 is a precision, wide dynamic range, delta-sigma analog-to-digital converter (ADC) with 24-bit resolution, designed for high-resolution measurement applications. It operates from a 2.7V to 5.25V supply and provides up to 24 bits of no missing code performance with an effective resolution of 22 bits. The device features eight multiplexed input channels, an internal programmable gain amplifier (PGA) with gains from 1 to 128, and a flexible serial interface. It is available in a 48-pin TQFP package (PFB) and is manufactured by Texas Instruments. A delta-sigma ADC is a type of analog-to-digital converter that uses oversampling and noise shaping to achieve high resolution. It is part of the ADC family, which converts analog signals into digital data for processing by microcontrollers or DSPs. Delta-sigma ADCs are known for their excellent linearity and low noise, making them ideal for precision measurement applications where accuracy is critical. Key features of the ADS1217 include 24-bit no missing codes, INL of 0.0012% of FSR (max), full-scale input of ±2VREF, and a PGA with gains from 1 to 128. It offers 22 bits of effective resolution at PGA=1 and 19 bits at PGA=128. The device supports single-cycle settling mode and programmable data output rates up to 1kHz. It also includes an on-chip 1.25V/2.5V reference, reducing external component count. Technically, the ADS1217 uses a delta-sigma modulator followed by a digital filter, achieving high resolution through oversampling. The multiplexed inputs allow multiple sensors to be connected, and the PGA amplifies small signals before conversion, improving dynamic range. The device includes an internal buffer that can be selected to provide high input impedance, simplifying sensor interfacing. Typical applications include smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation. Its high resolution and low noise make it suitable for precision measurement systems where accuracy is paramount. The wide input range and programmable gain allow it to handle a variety of sensor outputs. When designing with the ADS1217, ensure proper decoupling of the analog and digital supplies and use a clean reference voltage. The PGA gain setting should be chosen to maximize dynamic range while avoiding saturation. The serial interface allows easy connection to microcontrollers, and the single-cycle settling mode is useful for multiplexed applications.

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ADS1220 - 24-Bit Low-Power ADC with PGA | Texas Instruments
ADS1220

ADS1220 - 24-Bit Low-Power ADC with PGA | Texas Instruments

The ADS1220 is a precision, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) from Texas Instruments, designed for low-power, high-resolution measurement of small sensor signals. It integrates a programmable gain amplifier (PGA), a voltage reference, two programmable current sources, and a temperature sensor, significantly reducing system cost and component count. The device operates from a 2.3 V to 5.5 V supply and consumes as low as 120 μA in duty-cycle mode, making it ideal for battery-powered and loop-powered applications. It is available in a leadless VQFN-16 or a TSSOP-16 package and is specified over a temperature range of -40°C to +125°C. An analog-to-digital converter (ADC) is an electronic component that converts continuous analog signals into discrete digital values, enabling microcontrollers and digital processors to interpret real-world physical quantities such as temperature, pressure, and strain. The ADS1220 belongs to the family of delta-sigma ADCs, which use oversampling and noise shaping to achieve high resolution (24 bits) and excellent noise performance. Within the signal chain hierarchy, the ADS1220 sits between the sensor and the digital host, often following a signal conditioning stage and preceding a microcontroller or DSP. Its integrated PGA and reference eliminate the need for external precision components, simplifying the design and improving overall accuracy. Key features of the ADS1220 include a programmable gain from 1 V/V to 128 V/V, programmable data rates up to 2 kSPS, and up to 20 bits of effective resolution. It supports two differential or four single-ended inputs, and includes a 2.048 V reference with low drift. The device also provides simultaneous 50-Hz and 60-Hz rejection, which is critical for industrial applications where power-line noise is prevalent. The integrated temperature sensor and current sources enable direct RTD and thermocouple measurements without additional circuitry. Technically, the ADS1220 uses a delta-sigma modulator followed by a digital filter, achieving high accuracy with minimal external components. The PGA allows small sensor signals to be amplified before conversion, improving signal-to-noise ratio. The device communicates via a 4-wire SPI interface, and includes a data-ready (DRDY) pin for synchronization. The low-power architecture, combined with a wide supply range, makes it versatile for both portable and industrial designs. Typical applications include temperature measurement with RTDs and thermocouples, pressure and load-cell sensing, 4-20 mA loop-powered transmitters, and portable instrumentation. The ADS1220's low power consumption and integrated features make it particularly well-suited for field transmitters and battery-operated devices where power efficiency is critical. When designing with the ADS1220, ensure proper decoupling of the AVDD and DVDD supplies, and place the reference bypass capacitor close to the REFP/REFN pins. The PGA gain and data rate settings should be chosen to balance resolution and speed for the specific sensor bandwidth. For best noise performance, use a low-noise reference and minimize digital switching noise near the analog inputs.

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ADS1220IPWR - 24-Bit 2kSPS Delta-Sigma ADC | Texas Instruments
ADS1220IPWR

ADS1220IPWR - 24-Bit 2kSPS Delta-Sigma ADC | Texas Instruments

The Texas Instruments ADS1220IPWR is a 24-bit, 2-kSPS, four-channel, low-power delta-sigma analog-to-digital converter with an integrated programmable gain amplifier (PGA), voltage reference, SPI interface and two programmable excitation current sources (IDACs), housed in a 16-pin TSSOP package rated from -40C to +125C. A delta-sigma ADC is a type of analog-to-digital converter that oversamples the input signal and applies digital filtering to achieve very high resolution, making it the dominant architecture in the precision data-converter hierarchy (ADC -> precision ADC -> sigma-delta ADC -> data converter) for measuring small sensor signals. Where successive-approximation (SAR) ADCs favor speed, delta-sigma converters favor noise-free resolution, which is why they dominate sensor front ends. Key features of the ADS1220 include a flexible input multiplexer supporting two differential or four single-ended inputs, a low-noise PGA that reduces system component count, two integrated matched IDACs for ratiometric 3-wire and 4-wire RTD measurements, and an on-chip reference that eliminates external reference circuitry. The integration of PGA, VREF and IDACs in a small TSSOP-16 footprint is the part's central value proposition: TI positions it explicitly as a way to reduce system cost and bill-of-materials count in small-signal sensor applications. Architecturally, the device combines the delta-sigma modulator with a programmable digital filter, allowing trade-offs between output data rate (up to 2 kSPS) and noise performance. The SPI-compatible serial interface provides data reads, register configuration, and a DRDY output for deterministic cycle timing, simplifying interfacing with any MCU, including TI MSP430 and other low-power hosts. Typical applications include RTD and thermocouple temperature measurement, bridge sensors such as load cells and pressure sensors, battery monitoring, and portable industrial instrumentation where low power and small size matter. Design consideration: use the two IDACs with a precision reference resistor to build ratiometric RTD front ends; this cancels IDAC drift from the measurement, but budget the PGA headroom so IDAC compliance voltage plus sensor drop stays within the supply. This page synthesizes distributor pricing, drop-in alternatives, pinout, design notes and comparison data not consolidated in the manufacturer datasheet.

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ADS1220IRVAR - 24-Bit 2kSPS Delta-Sigma ADC with PGA | Texas Instruments
ADS1220IRVAR

ADS1220IRVAR - 24-Bit 2kSPS Delta-Sigma ADC with PGA | Texas Instruments

The Texas Instruments ADS1220IRVAR is a 24-bit, 2-kSPS, four-channel, low-power delta-sigma analog-to-digital converter with integrated programmable gain amplifier (PGA), internal 2.048 V voltage reference, two matched programmable excitation current sources (IDACs), and an SPI-compatible serial interface, housed in a 16-pin VQFN (3.5 mm x 3.5 mm) package with exposed thermal pad. A delta-sigma ADC is a type of analog-to-digital converter that oversamples the input signal far above Nyquist and applies digital filtering to push quantization noise out of band, achieving very high resolution. It is the dominant architecture for precision sensor measurement (ADC -> data converter -> mixed-signal front end -> semiconductor). The ADS1220 sits in TI's precision ADC portfolio alongside the ADS1120 (lower channel count, similar feature set) and the ADS131M family (higher speed, simultaneous-sampling focus). Key features include a flexible input multiplexer supporting two differential or four single-ended inputs, a low-noise chopper-stabilized PGA with gains of 1, 2, 4, 8, 16, 32, 64, and 128, two matched programmable excitation current sources up to 1.5 mA for ratiometric RTD and thermistor measurements, a burnout current source for open-wire sensor detection, and a 2.048 V integrated reference with 10 ppm/C typical drift. The digital filter provides simultaneous 50 Hz and 60 Hz line-noise rejection at 20 SPS. Technically, the ADS1220 achieves up to 20 bits effective resolution at the maximum 2 kSPS data rate and up to 29.5 bits noise-free resolution at 20 SPS, using a third-order delta-sigma modulator followed by a configurable SINC digital filter. The SPI interface supports clock speeds up to 4.5 MHz with optional CRC packet checking for robust communication in electrically noisy industrial environments. Typical applications include RTD and thermocouple temperature measurement, bridge sensor (load cell, strain gauge) signal digitization, battery cell voltage monitoring, and portable instrumentation such as handheld multimeters, where its low quiescent current and high channel integration reduce both system size and energy budget. Design consideration: for ratiometric RTD designs, route the IDAC excitation current through the reference resistor so reference and ADC share the same supply drift; keep AVDD between 2.3 V and 5.5 V, decouple both AVDD and DVDD with 1 uF X7R ceramics placed within 5 mm of the pins, and ground the exposed thermal pad directly to the analog ground plane. This page synthesizes distributor pricing, drop-in alternative analysis, and practical design notes not found on the manufacturer datasheet, helping engineers select, source, and qualify the ADS1220IRVAR for production.

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ADS122C04IRTER - 24-bit 2kSPS 4-ch Delta-Sigma ADC | Texas Instruments
ADS122C04IRTER

ADS122C04IRTER - 24-bit 2kSPS 4-ch Delta-Sigma ADC | Texas Instruments

The Texas Instruments ADS122C04IRTER is a precision 24-bit, 2-kSPS, 4-channel, low-power delta-sigma analog-to-digital converter housed in a 16-pin WQFN (3x3 mm) package. It integrates a low-noise programmable gain amplifier (PGA) with gains from 1 to 128, a low-drift internal voltage reference, two programmable excitation current sources (IDACs), an input multiplexer supporting two differential or four single-ended inputs, and an I2C-compatible interface capable of up to 1 Mbps. The device operates from a wide 2.3 V to 5.5 V supply and consumes only 315 uA (typical) in normal conversion mode. What is a delta-sigma ADC? A delta-sigma (sigma-delta) analog-to-digital converter is a type of data converter that uses a modulator loop and digital filtering to achieve very high resolution at lower sample rates, making it the dominant architecture for precision measurement of slowly varying sensor signals. Within the ADC taxonomy, it sits at: ADC > delta-sigma ADC > precision ADC > data converter > signal chain IC > semiconductor. The ADS122C04 specifically belongs to TI's precision, low-power ADC portfolio targeting bridge sensors, thermocouples, RTDs, and thermistors. Key differentiating features include 20 bits of effective resolution (noise-free bits depend on data rate and gain), simultaneous 50-Hz and 60-Hz line-cycle rejection, a 2.3-V to 5.6-V analog and digital supply range, and an extended -40C to +125C operating temperature range. The integrated IDACs simplify ratiometric measurements and can supply bias to resistive bridge sensors directly, eliminating external excitation circuitry. The device uses a switched-capacitor modulator with a digital SINC filter that delivers low total unadjusted error and excellent linearity, while two IDAC outputs are user-programmable from 10 uA to 1.5 mA. Two address pins allow up to 16 unique I2C addresses on a single bus, simplifying multi-channel PCB designs. Typical applications include weigh scales, strain-gauge sensor signal conditioning, industrial process control, temperature measurement with thermocouples or RTDs, and portable instrumentation. The integrated PGA and reference make the ADS122C04IRTER particularly well suited to direct bridge-sensor connection without front-end op-amps. Design consideration: the device's input multiplexer supports both bipolar (differential) and unipolar inputs; for thermocouples use the internal cold-junction compensation path and a separate dedicated temperature sensor. This page synthesizes distributor pricing from October 2026, parametric cross-reference data, and practical design notes that are not found in the standalone manufacturer datasheet.

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ADS1245IDGSR - 24-Bit Delta-Sigma ADC, MSOP-10 | Texas Instruments
ADS1245IDGSR

ADS1245IDGSR - 24-Bit Delta-Sigma ADC, MSOP-10 | Texas Instruments

The Texas Instruments ADS1245IDGSR is a 24-bit, ultra-low-power delta-sigma analog-to-digital converter (ADC) with a high-impedance buffered input, housed in a 10-pin MSOP (DGS) package. Its buffered input presents 3 GΩ of input impedance, minimizing measurement errors when paired with high-impedance signal sources. The device operates from analog supplies of 2.5 V to 5.25 V and digital supplies of 1.8 V to 3.6 V, consuming only a few milliwatts in active conversion. What is a delta-sigma ADC? A delta-sigma (ΣΔ) ADC is a converter architecture that uses oversampling and noise-shaping to deliver very high effective resolution at low-to-moderate sampling rates. It belongs to the broader class of ADCs (SAR, pipeline, dual-slope, ΣΔ) used wherever precision DC measurements are required. Within the power-management and signal-chain hierarchy, the ADS1245IDGSR sits between a low-impedance analog sensor bridge and a microcontroller's serial interface, providing digital-free-of-low-frequency-noise conversion. Key features include 20-bit effective resolution, ±2.5 V differential input range, simultaneous 50 Hz and 60 Hz line-noise rejection, simple two-wire serial interface, and pin-compatibility with the ADS1244. The ADS1245 offers 0.0006% (typical) and 0.0015% (maximum) integral nonlinearity (INL), supporting demanding measurement accuracy requirements. The architecture is built around a third-order delta-sigma modulator followed by a digital filter that performs simultaneous 50 Hz/60 Hz mains rejection at the appropriate output data rates. The buffered input simplifies front-end signal conditioning by eliminating the need for external op-amps when interfacing directly to high-impedance sensors such as strain gauges, thermocouples, or electrochemical cells. Typical applications include precision temperature and pressure measurement, portable industrial weighing scales, weighing scales and load-cell conditioning, and process control instrumentation. The wide supply range also supports battery-powered handheld meters and 4-20 mA loop-powered industrial transmitters. When designing with this device, place the input bypass capacitors as close to the AVDD/DVDD pins as possible and avoid routing the analog signals near the digital serial clock lines, because even high-PSRR ADCs can couple switching transients into the analog front-end. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers select and qualify the part rapidly.

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ADS1255IDBR - 24-Bit 30kSPS Low-Noise ADC | Texas Instruments
ADS1255IDBR

ADS1255IDBR - 24-Bit 30kSPS Low-Noise ADC | Texas Instruments

The Texas Instruments ADS1255IDBR is a 24-bit, 30kSPS, very-low-noise delta-sigma analog-to-digital converter with two selectable inputs and a 20-SSOP package. It accepts differential or single-ended measurements through its flexible input multiplexer. The converter combines a fourth-order delta-sigma modulator with a programmable digital filter to support demanding precision instrumentation. A delta-sigma ADC is a voltage-regulating feedback modulator followed by digital filtering and decimation. It trades a relatively simple analog input stage for high resolution, strong noise suppression, and flexible conversion rates. The ADS1255 belongs to the ADC/DAC category within broader data-converter, signal-processing, and semiconductor hierarchies. Verified headline features include 24-bit resolution, no missing codes, a maximum output rate of 30kSPS, fast channel cycling, differential or single-ended input support, and programmable-gain operation. According to the Texas Instruments ADS1255 datasheet, every data-rate and PGA setting provides noise-free resolution to 23 bits. The published maximum nonlinearity is ±0.0010%. Technically, the fourth-order delta-sigma modulator shapes quantization noise away from the signal band, while the programmable digital filter removes that shaped noise and averages samples. A serial interface configures the converter and transfers conversion results. This architecture favors low-noise measurement rather than very high instantaneous throughput. Typical uses include precision pressure and load-cell front ends, industrial transmitters, laboratory instrumentation, temperature measurement, low-level sensor acquisition, and communication equipment. Differential input is valuable when sensor leads can pick up noise or when the source has meaningful common-mode variation. Design the analog front end around the selected PGA, reference voltage, input range, and desired data rate. Keep input and reference routing compact, decouple supply rails near the device, and provide a clean low-noise ground strategy. SSOP lead pitch also demands careful solderability and inspection planning. This page consolidates verified manufacturer information, distributor availability, procurement data, and engineering guidance. It also separates exact sourced facts from parameters requiring design confirmation instead of filling unsupported values with assumptions.

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ADS1256IDBR - 24-Bit 30kSPS Delta-Sigma ADC | Texas Instruments
ADS1256IDBR

ADS1256IDBR - 24-Bit 30kSPS Delta-Sigma ADC | Texas Instruments

The Texas Instruments ADS1256IDBR is a 24-bit, 30kSPS, very-low-noise delta-sigma analog-to-digital converter with four differential and eight single-ended inputs, a programmable gain amplifier, and factory automation and process-control capability. It is supplied in a 28-pin SSOP package. The converter combines a fourth-order delta-sigma modulator with a programmable digital filter, enabling high-resolution measurement from low-frequency industrial sensors. A delta-sigma ADC is an analog-to-digital converter category that uses oversampling, noise shaping, and digital filtering to achieve high resolution. The ADS1256 belongs to the broader hierarchy of ADC, data-converter IC, signal-conditioning IC, and analog semiconductor devices. Its sigma-delta architecture is especially useful when high precision and noise performance matter more than very high bandwidth. The verified product information identifies a 24-bit conversion resolution, data rates up to 30kSPS, four differential or eight single-ended input choices, integrated PGA functionality, and a 28-SSOP package. These characteristics make the device suitable for precision current, voltage, resistance, and sensor measurements where the input bandwidth is limited. The manufacturer product page positions the device for factory automation and process control. The integrated PGA supports conditioning of low-level sensor outputs before conversion, while the programmable digital filter helps reject out-of-band noise. The four-wire serial interface supports digital control and data transfer, although signal timing, clocking, reference selection, and filter configuration must be implemented according to the manufacturer datasheet. The part is identified as a 28-SSOP device and is not a power semiconductor, so SOA data are not applicable. Typical applications include pressure and temperature measurement, industrial process monitoring, load-cell signal acquisition, laboratory instrumentation, and low-bandwidth sensor interfaces. The 30kSPS maximum data output rate is useful for many measurement loops, but it does not make the ADC suitable for high-frequency waveform acquisition. Input filtering, grounding, reference stability, and digital timing remain important for achieving predictable results. For PCB implementation, use a clean analog supply and ground structure, place input and reference components close to the converter, and keep digital communication traces away from sensitive analog nodes. Review the manufacturer datasheet for the exact pin names, recommended input network, reference requirements, and timing limits. This page combines the verified manufacturer and distributor information with application guidance and transparent data-gap markers. The main engineering tradeoff is that the ADS1256 prioritizes high-resolution, low-noise delta-sigma measurement over high-speed conversion. It is a strong fit for slow, precise industrial signals, but a different ADC architecture may be preferable when sampling many high-frequency points or handling substantially wider bandwidth.

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