Texas Instruments ADS1131 18-bit Analog-to-Digital Converter (ADC)
Texas Instruments ADS1131 18-bit Analog-to-Digital Converter for Bridge Sensors is a precision delta-sigma ADC that provides a complete front-end solution for bridge sensor applications, including weigh scales, strain gauges, and load cells. The TI ADS1131 features an onboard low-noise amplifier with a gain of 64, supporting a full-scale differential input of ±39mV. The ADS1131 delta-sigma ADC has an 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 Texas Instruments ADS1131 can be put into a low-power standby mode or shut off completely in power-down mode.
Features
- Complete front-end for bridge sensors
- Available in an SO package
- Internal amplifier, a 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
- 3V to 5.3V supply range
- -40°C to +85°C temperature range
Applications
- Weigh scales
- Strain gauges
- Load cells
- Industrial process control
Block Diagram
Opublikowano: 2012-02-27
| Zaktualizowano: 2022-03-11