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Convertidores analógico-digitales (ADC)
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ADS131B02-Q1

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ADC delta-sigma de 24 bits, 32 kSPS, dos canales, automoción y muestreo simultáneo

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ADS131B02-Q1

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Detalles del producto

Resolution (Bits) 24 Sample rate (max) (ksps) 32 Number of input channels 2 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) 10.6 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 2 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) 10.6 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 x 6.4
  • AEC-Q100 qualified for automotive applications:
    • Temperature grade 1: –40°C to +125°C, TA
  • Functional Safety-Capable
  • 2 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: 3 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
  • 2 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: 3 mW at 3.3-V AVDD and DVDD

The ADS131B02-Q1 is a two-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 ADS131B02-Q1 is a two-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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Documentación técnica

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* Data sheet ADS131B02-Q1 Automotive, 2-Channel, 32-kSPS, Simultaneous-Sampling,24-Bit, Delta-Sigma ADC datasheet PDF | HTML 28 sep 2021
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 mar 2023
Functional safety information ADS131B02-Q1 Functional Safety FIT Rate, FMD and Pin FMA PDF | HTML 28 sep 2021

Diseño y desarrollo

Para conocer los términos adicionales o los recursos necesarios, haga clic en cualquier título de abajo para ver la página de detalles cuando esté disponible.

Placa de evaluación

ADS131B04-Q1EVM — Módulo de evaluación de ADS131B04 para ADC delta-sigma de 24 bits, 32 kSPS, 4 canales, muestreo simu

El módulo de evaluación (EVM) ADS131B04-Q1 es una plataforma para evaluar el producto ADS131B04-Q1, un convertidor analógico a digital (ADC) sigma-delta de baja potencia, cuatro canales y muestreo simultáneo.

El kit ADS131B04-Q1EVM incluye la placa ADS131B04-Q1 y una placa controladora de interfaz (...)

Guía del usuario: PDF | HTML
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Soporte de 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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Modelo de simulación

ADS131B0x-Q1 IBIS Model (Rev. A)

SBAM447A.IBS (301 KB) - IBIS Model
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Herramienta de cálculo

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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
TSSOP (PW) 20 Ultra Librarian
Se aplican los Términos y condiciones estándar de TI para los elementos de evaluación.

Pedidos y calidad

Información incluida:
  • RoHS
  • REACH
  • Marcado del dispositivo
  • Acabado de plomo/material de la bola
  • Clasificación de nivel de sensibilidad a la humedad (MSL)/reflujo máximo
  • Estimaciones de tiempo medio entre fallas (MTBF)/fallas en el tiempo (FIT)
  • Contenido del material
  • Resumen de calificaciones
  • Monitoreo continuo de confiabilidad
Información incluida:
  • Lugar de fabricación
  • Lugar de ensamblaje

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