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ADC de precisión

ADS1131

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ADC Delta-Sigma de 18 bits, 80 SPS y 1 canal con interruptor de apagado para sensores de puente resi

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ADS1131

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Detalles del producto

Resolution (Bits) 18 Sample rate (max) (ksps) 0.08 Number of input channels 1 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Rating Catalog Reference mode External Input voltage range (max) (V) 0.041 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection, Oscillator, PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 2.9 Analog supply voltage (min) (V) 3 Analog supply voltage (max) (V) 5.3 Digital supply (min) (V) 3 Digital supply (max) (V) 5.3
Resolution (Bits) 18 Sample rate (max) (ksps) 0.08 Number of input channels 1 Interface type SPI Architecture Delta-Sigma Input type Differential, Single-ended Rating Catalog Reference mode External Input voltage range (max) (V) 0.041 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection, Oscillator, PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 2.9 Analog supply voltage (min) (V) 3 Analog supply voltage (max) (V) 5.3 Digital supply (min) (V) 3 Digital supply (max) (V) 5.3
SOIC (D) 16 59.4 mm² 9.9 x 6
  • Complete Front-End for Bridge Sensors
  • Available in an SO Package
  • Internal Amplifier, Gain of 64
  • Internal Oscillator
  • Low-Side Power Switch for Bridge Sensor
  • 18-Bit Noise-Free Resolution
  • Selectable 10SPS or 80SPS Data Rates
  • Simultaneous 50Hz and 60Hz Rejection at 10SPS
  • External Voltage Reference up to 5V for Ratiometric Measurements
  • Simple, Pin-Driven Control
  • Two-Wire Serial Digital Interface
  • Supply Range: 3V to 5.3V
  • –40°C to +85°C Temperature Range
  • Complete Front-End for Bridge Sensors
  • Available in an SO Package
  • Internal Amplifier, Gain of 64
  • Internal Oscillator
  • Low-Side Power Switch for Bridge Sensor
  • 18-Bit Noise-Free Resolution
  • Selectable 10SPS or 80SPS Data Rates
  • Simultaneous 50Hz and 60Hz Rejection at 10SPS
  • External Voltage Reference up to 5V for Ratiometric Measurements
  • Simple, Pin-Driven Control
  • Two-Wire Serial Digital Interface
  • Supply Range: 3V to 5.3V
  • –40°C to +85°C Temperature Range

The ADS1131 is a precision, 18-bit analog-to-digital converter (ADC). With an onboard, low-noise amplifier, onboard oscillator, precision 18-bit delta-sigma (ΔΣ) ADC, and bridge power switch, the ADS1131 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and load cells.

The low-noise amplifier has a gain of 64, supporting a full-scale differential input of ±39mV. The ΔΣ ADC has 18-bit effective resolution and is comprised of a third-order modulator and fourth-order digital filter. Two data rates are supported: 10SPS (with both 50Hz and 60Hz rejection) and 80SPS. The ADS1131 can be put into a low-power standby mode or shut off completely in power-down mode.

The ADS1131 is controlled by dedicated pins; there are no digital registers to program. Data are output over an easily-isolated serial interface that connects directly to the MSP430 and other microcontrollers.

The ADS1131 is available in an SO-16 package and is specified from –40°C to +85°C.

The ADS1131 is a precision, 18-bit analog-to-digital converter (ADC). With an onboard, low-noise amplifier, onboard oscillator, precision 18-bit delta-sigma (ΔΣ) ADC, and bridge power switch, the ADS1131 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and load cells.

The low-noise amplifier has a gain of 64, supporting a full-scale differential input of ±39mV. The ΔΣ ADC has 18-bit effective resolution and is comprised of a third-order modulator and fourth-order digital filter. Two data rates are supported: 10SPS (with both 50Hz and 60Hz rejection) and 80SPS. The ADS1131 can be put into a low-power standby mode or shut off completely in power-down mode.

The ADS1131 is controlled by dedicated pins; there are no digital registers to program. Data are output over an easily-isolated serial interface that connects directly to the MSP430 and other microcontrollers.

The ADS1131 is available in an SO-16 package and is specified from –40°C to +85°C.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet 18-Bit ADC for Bridge Sensors datasheet (Rev. C) 09 oct 2013
Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) PDF | HTML 18 mar 2024
Application note A Basic Guide to Bridge Measurements (Rev. A) PDF | HTML 13 mar 2024
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 mar 2023
E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) 19 jun 2020
Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 19 sep 2016
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 mar 2015
Analog Design Journal How delta-sigma ADCs work, Part 2 09 nov 2011
User guide ADS1x31REF User Guide (Rev. A) 10 ago 2011

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.

Modelo de simulación

ADS1131, ADS1231 IBIS Model (Rev. A)

SBAM017A.ZIP (35 KB) - IBIS Model
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Pedidos y calidad

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  • Marcado del dispositivo
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  • 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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