ADS122C04 Series

24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & I2C interface

Catalog

24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & I2C interface

Part	Input Type	Package / Case	Number of Inputs	Ratio - S/H:ADC	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Configuration	Architecture	Number of A/D Converters	Features	Sampling Rate (Per Second)	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Mounting Type	Data Interface	Reference Type	Number of Bits	Package / Case [x]	Package / Case [y]
Texas Instruments ADS122C04IRTER	Differential Single Ended	16-WFQFN Exposed Pad	4	0:1	5.5 V	2.3 V	MUX-PGA-ADC	Sigma-Delta	1	PGA Temperature Sensor	2k	16-WQFN (3x3)	125 °C	-40 °C	5.5 V	2.3 V	Surface Mount	I2C	Internal	24
Texas Instruments ADS122C04IRTET	Differential Single Ended	16-WFQFN Exposed Pad	4	0:1	5.5 V	2.3 V	MUX-PGA-ADC	Sigma-Delta	1	PGA Temperature Sensor	2k	16-WQFN (3x3)	125 °C	-40 °C	5.5 V	2.3 V	Surface Mount	I2C	Internal	24
Texas Instruments ADS122C04IPW	Differential Single Ended	16-TSSOP	4	0:1	5.5 V	2.3 V	MUX-PGA-ADC	Sigma-Delta	1	PGA Temperature Sensor	2k	16-TSSOP	125 °C	-40 °C	5.5 V	2.3 V	Surface Mount	I2C	Internal	24	0.173 in	4.4 mm

Catalog

24-bit, 2-kSPS, 4-ch, low-power, small-size delta-sigma ADC with PGA, VREF, 2x IDACs & I2C interface

Key Features

• Current Consumption as Low as 315 µA (typ)Wide Supply Range: 2.3 V to 5.5 VProgrammable Gain: 1 to 128Programmable Data Rates: Up to 2 kSPSUp to 20 Bits Effective ResolutionSimultaneous 50-Hz and 60-Hz Rejection at 20 SPS With Single-Cycle Settling Digital FilterTwo Differential or Four Single-Ended InputsDual-Matched Programmable Current Sources:10 µA to 1.5 mAInternal 2.048-V Reference: 5 ppm/°C (typ) DriftInternal 2% Accurate OscillatorInternal Temperature Sensor:0.5°C (typ) AccuracyI2C-Compatible InterfaceSupported I2C Bus Speed Modes:Standard-Mode, Fast-Mode, Fast-Mode Plus16 Pin-Configurable I2C AddressesPackage: 3.0-mm × 3.0-mm × 0.75-mm WQFNCurrent Consumption as Low as 315 µA (typ)Wide Supply Range: 2.3 V to 5.5 VProgrammable Gain: 1 to 128Programmable Data Rates: Up to 2 kSPSUp to 20 Bits Effective ResolutionSimultaneous 50-Hz and 60-Hz Rejection at 20 SPS With Single-Cycle Settling Digital FilterTwo Differential or Four Single-Ended InputsDual-Matched Programmable Current Sources:10 µA to 1.5 mAInternal 2.048-V Reference: 5 ppm/°C (typ) DriftInternal 2% Accurate OscillatorInternal Temperature Sensor:0.5°C (typ) AccuracyI2C-Compatible InterfaceSupported I2C Bus Speed Modes:Standard-Mode, Fast-Mode, Fast-Mode Plus16 Pin-Configurable I2C AddressesPackage: 3.0-mm × 3.0-mm × 0.75-mm WQFN

Description

The ADS122C04 is a precision, 24-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, and a precision temperature sensor. The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128. This PGA makes the ADS122C04 ideally suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. The ADS122C04 features a 2-wire, I2C-compatible interface that supports I2C bus speeds up to 1 Mbps. Two address pins allow selection of 16 different I2C addresses for the device. The ADS122C04 is offered in a leadless 16-pin WQFN or a 16-pin TSSOP package and is specified over a temperature range of –40°C to +125°C. The ADS122C04 is a precision, 24-bit, analog-to-digital converter (ADC) that offers many integrated features to reduce system cost and component count in applications measuring small sensor signals. The device features two differential or four single-ended inputs through a flexible input multiplexer (MUX), a low-noise, programmable gain amplifier (PGA), two programmable excitation current sources, a voltage reference, an oscillator, and a precision temperature sensor. The device can perform conversions at data rates up to 2000 samples-per-second (SPS) with single-cycle settling. At 20 SPS, the digital filter offers simultaneous 50-Hz and 60-Hz rejection for noisy industrial applications. The internal PGA offers gains up to 128. This PGA makes the ADS122C04 ideally suited for applications measuring small sensor signals, such as resistance temperature detectors (RTDs), thermocouples, thermistors, and resistive bridge sensors. The ADS122C04 features a 2-wire, I2C-compatible interface that supports I2C bus speeds up to 1 Mbps. Two address pins allow selection of 16 different I2C addresses for the device. The ADS122C04 is offered in a leadless 16-pin WQFN or a 16-pin TSSOP package and is specified over a temperature range of –40°C to +125°C.