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Convertidores analógico-digitales (ADC)
ADC de precisión

ADS1231

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ADC Delta-Sigma de 24 bits, 80 SPS y 1 canal para sensores de puente resistivos y básculas de peso

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ADS1231

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Detalles del producto

Resolution (Bits) 24 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) 0.0195 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection, Oscillator, PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 5 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) 24 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) 0.0195 Input voltage range (min) (V) 0 Features 50/60 Hz Rejection, Oscillator, PGA Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 5 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
  • Internal Amplifier, Gain of 128
  • Internal Oscillator
  • Low-Side Power Switch for Bridge Sensor
  • Low Noise: 35nVrms
  • Selectable Data Rates: 10SPS or 80SPS
  • Simultaneous 50Hz and 60Hz Rejection at 10SPS
  • Input EMI Filter
  • External Voltage Reference up to 5V for Ratiometric Measurements
  • Simple, Pin-Driven Control
  • Two-Wire Serial Digital Interface
  • Supply Range: 3V to 5.3V
  • Package: SOIC-16
  • Temperature Range: –40°C to +85°C
  • APPLICATIONS
    • Weigh Scales
    • Strain Gauges
    • Load Cells
    • Industrial Process Control

All other trademarks are the property of their respective owners
  • Complete Front-End for Bridge Sensors
  • Internal Amplifier, Gain of 128
  • Internal Oscillator
  • Low-Side Power Switch for Bridge Sensor
  • Low Noise: 35nVrms
  • Selectable Data Rates: 10SPS or 80SPS
  • Simultaneous 50Hz and 60Hz Rejection at 10SPS
  • Input EMI Filter
  • External Voltage Reference up to 5V for Ratiometric Measurements
  • Simple, Pin-Driven Control
  • Two-Wire Serial Digital Interface
  • Supply Range: 3V to 5.3V
  • Package: SOIC-16
  • Temperature Range: –40°C to +85°C
  • APPLICATIONS
    • Weigh Scales
    • Strain Gauges
    • Load Cells
    • Industrial Process Control

All other trademarks are the property of their respective owners

The ADS1231 is a precision, 24-bit analog-to-digital converter (ADC). With an onboard low-noise amplifier, onboard oscillator, precision third-order 24-bit delta-sigma () modulator, and bridge power switch, the ADS1231 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 128, supporting a full-scale differential input of ±19.5mV. The ADC has 24-bit 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 ADS1231 can be put in a low-power standby mode or shut off completely in power-down mode.

The ADS1231 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 ADS1231 is available in an SO-16 package and is specified from –40°C to +85°C.

The ADS1231 is a precision, 24-bit analog-to-digital converter (ADC). With an onboard low-noise amplifier, onboard oscillator, precision third-order 24-bit delta-sigma () modulator, and bridge power switch, the ADS1231 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 128, supporting a full-scale differential input of ±19.5mV. The ADC has 24-bit 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 ADS1231 can be put in a low-power standby mode or shut off completely in power-down mode.

The ADS1231 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 ADS1231 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 24-Bit ADC for Bridge Sensors datasheet (Rev. D) 30 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
Technical article The real secret to become a better cook. Integrate smart scale technology in kitch PDF | HTML 25 oct 2016
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 mar 2015
Application note Delta-Sigma ADC Design for Bridge Sensor Applications 30 sep 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.

Placa de evaluación

ADS1231REF — Módulo de evaluación ADS1231

El ADS1231REF es una placa de circuito diseñada para incorporar el convertidor analógico a digital ADS1231 de 24 bits sigma-delta, de precisión y bajo ruido. Esta placa contiene todos los circuitos y la interfaz de usuario necesarios para un digitalizador de báscula. Es adecuada para la evaluación (...)

Guía del usuario: PDF
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Modelo de simulación

ADS1131, ADS1231 IBIS Model (Rev. A)

SBAM017A.ZIP (35 KB) - IBIS Model
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Herramienta de cálculo

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

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

Productos y hardware compatibles

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Herramienta de diseño

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

PSpice® para TI es un entorno de diseño y simulación que ayuda a evaluar la funcionalidad de los circuitos analógicos. Esta completa suite de diseño y simulación utiliza un motor de análisis analógico de Cadence®. Disponible sin ningún costo, PSpice para TI incluye una de las bibliotecas de modelos (...)
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Herramienta de simulación

TINA-TI — Programa de simulación analógica basado en SPICE

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Guía del usuario: PDF
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Encapsulado Pines Símbolos CAD, huellas y modelos 3D
SOIC (D) 16 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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