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ADS131B04-Q1

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24-Bit, 32-kSPS, 4-Kanal, simultanabtastender Delta-Sigma A/D-Wandler für die Automobilindustrie

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Datenblatt

ADS131B04-Q1

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Produktdetails

Resolution (Bits) 24 Sample rate (max) (ksps) 32 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Simultaneous Sampling Rating Automotive TI functional safety category Functional Safety-Capable Reference mode Internal Input voltage range (max) (V) 2.4 Input voltage range (min) (V) -0.3 Features PGA, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 19.8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 3.6 Digital supply (min) (V) 2.7 Digital supply (max) (V) 3.6
Resolution (Bits) 24 Sample rate (max) (ksps) 32 Number of input channels 4 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Multichannel configuration Simultaneous Sampling Rating Automotive TI functional safety category Functional Safety-Capable Reference mode Internal Input voltage range (max) (V) 2.4 Input voltage range (min) (V) -0.3 Features PGA, Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 19.8 Analog supply voltage (min) (V) 2.7 Analog supply voltage (max) (V) 3.6 Digital supply (min) (V) 2.7 Digital supply (max) (V) 3.6
TSSOP (PW) 20 41.6 mm² (6.5 mm × 6.4 mm)
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 4 simultaneous-sampling, differential input ADCs
  • Programmable data rate: Up to 32 kSPS
  • Programmable gain: Up to 128
  • Noise performance:
    • 0.82 µVRMS at 1 kSPS, gain = 8
  • Global-chop mode to remove offset drift over temperature and time
  • High-impedance analog inputs for direct sensor connection
  • Integrated negative charge pump allows input signal measurements below ground
  • Crosstalk between channels: –120 dB
  • Low-drift internal reference: 1.2 V
  • Precision internal oscillator
  • CRC on communications and register map
  • Analog and digital supplies: 2.7 V to 3.6 V
  • Low power consumption: 5 mW at 3.3-V AVDD and DVDD
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 4 simultaneous-sampling, differential input ADCs
  • Programmable data rate: Up to 32 kSPS
  • Programmable gain: Up to 128
  • Noise performance:
    • 0.82 µVRMS at 1 kSPS, gain = 8
  • Global-chop mode to remove offset drift over temperature and time
  • High-impedance analog inputs for direct sensor connection
  • Integrated negative charge pump allows input signal measurements below ground
  • Crosstalk between channels: –120 dB
  • Low-drift internal reference: 1.2 V
  • Precision internal oscillator
  • CRC on communications and register map
  • Analog and digital supplies: 2.7 V to 3.6 V
  • Low power consumption: 5 mW at 3.3-V AVDD and DVDD

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.
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Technische Dokumentation

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* Datenblatt ADS131B04-Q1 Automotive, 4-Channel, 32-kSPS, Simultaneous-Sampling,24-Bit, Delta-Sigma ADC datasheet (Rev. B) PDF | HTML 05.11.2021
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Informationen zur funktionalen Sicherheit ADS131B04-Q1 Functional Safety FIT Rate, FMD and Pin FMA (Rev. A) PDF | HTML 05.11.2021
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Design und Entwicklung

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Evaluierungsplatine

ADS131B04-Q1EVM — ADS131B04-Evaluierungsmodul für 24-Bit-, 32-kSPS-, 4-Kanal-, simultane Abtastung, Delta-Sigma-A/D-Wa

Das ADS131B04-Q1. Evaluierungsmodul (EVM) ist eine Plattform zur Evaluierung des ADS131B04-Q1-Produkts, eines energieeffizienten, vierkanaligen Delta-Sigma-Analog-Digital-Wandlers (ADC) mit simultaner Abtastung.

Das ADS131B04-Q1EVM-Kit enthält die ADS131B04-Q1-Platine und die Precision Host (...)

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Support-Software

ADS131B04Q1-C-EXAMPLE-CODE — ADS131B04-Q1 example C code

Expedite your embedded design using this example C code for the ADS131B04-Q1 product family
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Simulationsmodell

ADS131B0x-Q1 IBIS Model (Rev. A)

SBAM447A.IBS (301 KB) - IBIS-Modell
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Berechnungstool

ADC-DESIGN-CALC — Online design calculator tool for TI Precision ADCs

ADC-DESIGN-CALC is an online resource with multiple ADC calculator tools (such as Digital Filter Response, Code-to-Voltage, CMR, CRC, etc.) for TI Precision ADCs.
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Berechnungstool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

Der Rechner für Analogtechniker beschleunigt viele der sich wiederholenden Berechnungen, die Entwickler von analogen Schaltungsdesigns regelmäßig durchführen müssen. Dieses PC-basierte Tool bietet eine grafische Schnittstelle mit einer Liste verschiedener gebräuchlicher Berechnungen. Das Spektrum (...)

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