The ADS1217 is an 8-channel, 24-bit Analog-to-Digital Converter (ADC) from Texas Instruments with 24-bit no missing code performance and 22-bit effective resolution.
The ADS1217 is a precision, wide dynamic range, delta-sigma analog-to-digital converter featuring 24-bit resolution and eight multiplexed input channels. It operates from 2.7V to 5.25V supplies and includes an on-chip 1.25V/2.5V reference, programmable data output rates up to 1kHz, and an 8-bit digital-to-analog converter for offset correction.
The device is designed for high-resolution measurement applications such as smart transmitters, industrial process control, weigh scales, and chromatography. Key features include a programmable gain amplifier (PGA) with selectable gains from 1 to 128, burnout current sources for sensor fault detection, and an SPI-compatible serial interface.
| Resolution | 24 Bits |
|---|---|
| No Missing Codes | 24 Bits |
| Integral Nonlinearity | 0.0012% of FSR |
| Operating Temperature Range | -40°C to +85°C |
| Power-Supply Voltage | 2.7V to 5.25V |
| Programmable Gain Amplifier | 1 to 128 |
| Effective Resolution (PGA = 1) | 22 Bits |
| Effective Resolution (PGA = 128) | 19 Bits |
| Full-Scale Input | ±2VREF |
The device provides up to 24 bits of no missing code performance and effective resolution of 22 bits.
The ADS1217 operates from 2.7V to 5.25V supplies.
The device supports programmable data output rates up to 1kHz.