ADS131M04 Series

Four-channel, 24-bit, 64-kSPS, simultaneous-sampling, delta-sigma ADC

Catalog

Four-channel, 24-bit, 64-kSPS, simultaneous-sampling, delta-sigma ADC

Part	Number of Inputs	Supplier Device Package	Number of A/D Converters	Reference Type	Data Interface	Package / Case [y]	Package / Case	Package / Case [x]	Ratio - S/H:ADC	Features	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Operating Temperature [Max]	Operating Temperature [Min]	Number of Bits	Input Type	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Architecture	Mounting Type	Configuration	Sampling Rate (Per Second)
Texas Instruments ADS131M04IPWT	4	20-TSSOP	4	Internal	Serial SPI	4.4 mm	20-TSSOP	0.173 in	0:4	PGA	2.7 V	3.6 V	125 °C	-40 °C	24	Differential	2 V	1.65 V	Sigma-Delta	Surface Mount	ADC	32 k per second
Texas Instruments ADS131M04IRUKR	4	20-WQFN (3x3)	4	Internal	Serial SPI		20-WFQFN Exposed Pad		0:4	PGA Simultaneous Sampling	2.4 V	3.6 V	125 °C	-40 °C	24	Differential	3.6 V	1.65 V	Sigma-Delta	Surface Mount	PGA-ADC	32 k per second
Texas Instruments ADS131M04IRUKT	4	20-WQFN (3x3)	4	Internal	Serial SPI		20-WFQFN Exposed Pad		0:4	PGA Simultaneous Sampling	2.4 V	3.6 V	125 °C	-40 °C	24	Differential	3.6 V	1.65 V	Sigma-Delta	Surface Mount	PGA-ADC	32 k per second

Catalog

Four-channel, 24-bit, 64-kSPS, simultaneous-sampling, delta-sigma ADC

Key Features

• 4 simultaneously sampling differential inputsProgrammable data rate up to 64 kSPSProgrammable gain up to 128Noise performance:102-dB dynamic range at gain = 1, 4 kSPS80-dB dynamic range at gain = 64, 4 kSPSTotal harmonic distortion: –100 dBHigh-impedance inputs for direct sensor connection:Input impedance 330-kΩ for gains of 1, 2, and 4Input impedance ≥ 1-MΩ for gains of 8, 16, 32, 64, and 128Programmable channel-to-channel phase delay calibration:244-ns resolution, 8.192-MHz fCLKINCurrent-detect mode allows for extremely low power tamper detectionFast startup: first data within 0.5 ms of supply rampIntegrated negative charge pump allows input signals below groundCrosstalk between channels: –120 dBLow-drift internal voltage referenceCyclic redundancy check (CRC) on communications and register map2.7-V to 3.6-V analog and digital suppliesLow power consumption: 3.3 mW at 3-V AVDD and DVDDPackages: 20-pin TSSOP or 20-pin WQFNOperating temperature range: –40°C to +125°C4 simultaneously sampling differential inputsProgrammable data rate up to 64 kSPSProgrammable gain up to 128Noise performance:102-dB dynamic range at gain = 1, 4 kSPS80-dB dynamic range at gain = 64, 4 kSPSTotal harmonic distortion: –100 dBHigh-impedance inputs for direct sensor connection:Input impedance 330-kΩ for gains of 1, 2, and 4Input impedance ≥ 1-MΩ for gains of 8, 16, 32, 64, and 128Programmable channel-to-channel phase delay calibration:244-ns resolution, 8.192-MHz fCLKINCurrent-detect mode allows for extremely low power tamper detectionFast startup: first data within 0.5 ms of supply rampIntegrated negative charge pump allows input signals below groundCrosstalk between channels: –120 dBLow-drift internal voltage referenceCyclic redundancy check (CRC) on communications and register map2.7-V to 3.6-V analog and digital suppliesLow power consumption: 3.3 mW at 3-V AVDD and DVDDPackages: 20-pin TSSOP or 20-pin WQFNOperating temperature range: –40°C to +125°C

Description

The ADS131M04 is a four-channel, simultaneously-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) that offers wide dynamic range, low power, and energy-measurement-specific features, making the device an excellent fit for energy metering, power metrology, and circuit breaker applications. The ADC inputs can be directly interfaced to a resistor-divider network or a power transformer to measure voltage or to a current transformer, shunt, or a Rogowski coil to measure current. The individual ADC channels can be independently configured depending on the sensor input. A low-noise, programmable gain amplifier (PGA) provides gains ranging from 1 to 128 to amplify low-level signals. Additionally, this device integrates channel-to-channel phase calibration and offset and gain calibration registers to help remove signal-chain errors. A low-drift, 1.2-V reference is integrated into the device reducing printed circuit board (PCB) area. Optional cyclic redundancy checks (CRCs) on the data input, data output, and register map maintain communication integrity. The complete analog front-end (AFE) is offered in a 20-pin TSSOP package or a leadless 20-pin WQFN package and is specified over the industrial temperature range of –40°C to +125°C. The ADS131M04 is a four-channel, simultaneously-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converter (ADC) that offers wide dynamic range, low power, and energy-measurement-specific features, making the device an excellent fit for energy metering, power metrology, and circuit breaker applications. The ADC inputs can be directly interfaced to a resistor-divider network or a power transformer to measure voltage or to a current transformer, shunt, or a Rogowski coil to measure current. The individual ADC channels can be independently configured depending on the sensor input. A low-noise, programmable gain amplifier (PGA) provides gains ranging from 1 to 128 to amplify low-level signals. Additionally, this device integrates channel-to-channel phase calibration and offset and gain calibration registers to help remove signal-chain errors. A low-drift, 1.2-V reference is integrated into the device reducing printed circuit board (PCB) area. Optional cyclic redundancy checks (CRCs) on the data input, data output, and register map maintain communication integrity. The complete analog front-end (AFE) is offered in a 20-pin TSSOP package or a leadless 20-pin WQFN package and is specified over the industrial temperature range of –40°C to +125°C.