ADS1232 24 Bit Analog to Digital Converter (ADC) View larger

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ADS1232 24 Bit Analog to Digital Converter (ADC)

0104110000043993

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The ADS1232 and ADS1234 are precision 24-bit analog-to-digital converters (ADCs). With an onboard, low-noise programmable gain amplifier (PGA), precision delta-sigma ADC and internal oscillator, the ADS1232/4 provide a complete front-end solution for bridge sensor applications including weigh scales, strain gauges and pressure sensors.


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Overview

The input multiplexer accepts either two (ADS1232) or four (ADS1234) differential inputs. The ADS1232 also includes an onboard temperature sensor to monitor ambient temperature. The onboard, low-noise PGA has a selectable gain of 1, 2, 64, or 128 supporting a full-scale differential input of ±2.5V, ±1.25V, ±39mV, or ±19.5mV. The delta-sigma ADC has 23.5-bit effective resolution and is comprised of a 3rd-order modulator and 4th-order digital filter. Two data rates are supported: 10SPS (with both 50Hz and 60Hz rejection) and 80SPS. The ADS1232 can be clocked externally using an oscillator or a crystal. There is also an internal oscillator available that requires no external components. Offset calibration is performed on-demand and the ADS1232 can be put in a low-power standby mode or shut off completely in power-down mode. All of the features of the ADS1232 are operated through simple pin-driven control. There are no digital registers to program in order to simplify software development. Data are output over an easily-isolated serial interface that connects directly to the MSP430 and other microcontrollers.

The ADS1232 is available in a TSSOP-24 package and the ADS1234 is in a TSSOP-28. Both are fully specified from -40°C to +105°C.


Specifications

  • Complete Front-End for Bridge Sensors
  • Up to 23.5 Effective Bits
  • Onboard, Low-Noise PGA
  • RMS Noise:
    • 17nV at 10SPS (PGA = 128)
    • 44nV at 80SPS (PGA = 128)
  • 19.2-Bit Noise-Free Resolution at Gain = 64
  • Over 100dB Simultaneous 50Hz and 60Hz Rejection
  • Flexible Clocking:
    • Low-Drift Onboard Oscillator (±3%) Optional External Crystal
  • Selectable Gains of 1, 2, 64, and 128
  • Easy Ratiometric Measurements—External Voltage Reference up to 5V
  • Selectable 10SPS or 80SPS Data Rates
  • Two-Channel Differential Input with Built-In Temperature Sensor (ADS1232)
  • Simple Serial Digital Interface
  • Supply Range: 2.7V to 5.3V
  • -40°C to +105°C Temperature Range


Applications

  • Weigh Scales
  • Strain Gauges
  • Pressure Sensors
  • Industrial Process Control


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ADS1232 24 Bit Analog to Digital Converter (ADC)

ADS1232 24 Bit Analog to Digital Converter (ADC)

The ADS1232 and ADS1234 are precision 24-bit analog-to-digital converters (ADCs). With an onboard, low-noise programmable gain amplifier (PGA), precision delta-sigma ADC and internal oscillator, the ADS1232/4 provide a complete front-end solution for bridge sensor applications including weigh scales, strain gauges and pressure sensors.


See Description for more details about the product.

Add to cart now!

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