Texas Instruments ADS1231
The ADS1231 is a precision, 24-bit analog-to-digital converter (ADC). With an onboard low-noise amplifier, onboard oscillator, precision third-order 24bit delta-sigma (ΔΣ) 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.| Part No. | ADS1231 |
|---|---|
| Datasheet | ADS1231 Download |
| Manufacturer |  Texas Instruments |
| Description | 24-Bit Analog-to-Digital Converter |
| Buy | Stock & Price |
FEATURES
1●2 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
DESCRIPTION
The ΔΣ 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.
