ADS131B04-Q1 Series

Automotive 24-bit, 32-kSPS, four-channel, simultaneous-sampling, delta-sigma ADC

Catalog

Automotive 24-bit, 32-kSPS, four-channel, simultaneous-sampling, delta-sigma ADC

Part	Voltage - Supply, Digital [Max]	Voltage - Supply, Digital [Min]	Mounting Type	Number of Inputs	Qualification	Operating Temperature [Max]	Operating Temperature [Min]	Configuration	Number of A/D Converters	Input Type	Grade	Number of Bits	Voltage - Supply, Analog [Min]	Voltage - Supply, Analog [Max]	Reference Type	Ratio - S/H:ADC	Data Interface	Features	Architecture	Supplier Device Package	Package / Case [y]	Package / Case	Package / Case [x]	Sampling Rate (Per Second)
Texas Instruments ADS131B04QPWRQ1	3.6 V	2.7 V	Surface Mount	4	AEC-Q100	125 °C	-40 °C	ADC	4	Differential	Automotive	24	2.7 V	3.6 V	Internal	0:4	Serial SPI	Internal Oscillator PGA Simultaneous Sampling	Sigma-Delta	20-TSSOP	4.4 mm	20-TSSOP	0.173 in	32 k per second

Catalog

Automotive 24-bit, 32-kSPS, four-channel, simultaneous-sampling, delta-sigma ADC

Key Features

• AEC-Q100 qualified for automotive applications:Temperature grade 1: –40°C to +125°C, TAFunctional Safety-CapableDocumentation available to aid functional safety system design4 simultaneous-sampling, differential input ADCsProgrammable data rate: Up to 32 kSPSProgrammable gain: Up to 128Noise performance:0.82 µVRMSat 1 kSPS, gain = 8Global-chop mode to remove offset drift over temperature and timeHigh-impedance analog inputs for direct sensor connectionIntegrated negative charge pump allows input signal measurements below groundCrosstalk between channels: –120 dBLow-drift internal reference: 1.2 VPrecision internal oscillatorCRC on communications and register mapAnalog and digital supplies: 2.7 V to 3.6 VLow power consumption: 5 mW at 3.3-V AVDD and DVDDAEC-Q100 qualified for automotive applications:Temperature grade 1: –40°C to +125°C, TAFunctional Safety-CapableDocumentation available to aid functional safety system design4 simultaneous-sampling, differential input ADCsProgrammable data rate: Up to 32 kSPSProgrammable gain: Up to 128Noise performance:0.82 µVRMSat 1 kSPS, gain = 8Global-chop mode to remove offset drift over temperature and timeHigh-impedance analog inputs for direct sensor connectionIntegrated negative charge pump allows input signal measurements below groundCrosstalk between channels: –120 dBLow-drift internal reference: 1.2 VPrecision internal oscillatorCRC on communications and register mapAnalog and digital supplies: 2.7 V to 3.6 VLow power consumption: 5 mW at 3.3-V AVDD and DVDD

Description

The ADS131B04-Q1 is a four-channel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) that offers wide dynamic range, low power, and buffered analog inputs, making the device an excellent fit for automotive battery management systems (BMS). The ADC inputs can be directly interfaced to shunt resistors for bidirectional battery-current measurements, to resistor-divider networks for high-voltage measurements, or to temperature sensors (such as thermistors or analog output temperature sensors). 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. The device features a global-chop mode to remove offset drift over temperature and time. Additionally, this device integrates offset and gain calibration registers to help remove signal-chain errors. A low-drift, 1.2-V reference and precision oscillator are 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 and is specified over the automotive temperature range of –40°C to +125°C. The ADS131B04-Q1 is a four-channel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC) that offers wide dynamic range, low power, and buffered analog inputs, making the device an excellent fit for automotive battery management systems (BMS). The ADC inputs can be directly interfaced to shunt resistors for bidirectional battery-current measurements, to resistor-divider networks for high-voltage measurements, or to temperature sensors (such as thermistors or analog output temperature sensors). 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. The device features a global-chop mode to remove offset drift over temperature and time. Additionally, this device integrates offset and gain calibration registers to help remove signal-chain errors. A low-drift, 1.2-V reference and precision oscillator are 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 and is specified over the automotive temperature range of –40°C to +125°C.