Texas Instruments ADS888x 18-Bit SAR Analog-to-Digital Converters
Texas Instruments ADS888x 18-Bit SAR Analog-to-Digital Converters are 18-bit, true-differential input, analog-to-digital converters (ADCs). These devices operate with a 2.5V to 5V external reference, offering a wide selection of signal ranges without additional input signal scaling. The reference voltage setting is independent of, and can exceed, the analog supply voltage (AVDD).
The device offers an SPI-compatible serial interface that also supports daisy-chain operation for cascading multiple devices. An optional busy-indicator bit (available for ADS8883, ADS8887 only) makes synchronizing with the digital host easy. Device operation is optimized for very low-power operation. Power consumption directly scales with speed. This feature makes the ADS888x excellent for lower-speed applications.
Features
- 100kHz to 1MHz sample rate
- No latency output
- Unipolar, true-differential input range: -VREF to +VREF
- 2.7V to 3.6V AVDD input voltage
- 2.7V to 3.6V or 1.65V to 3.6V DVDD
- -40°C to +85°C operating temperature range
Applications
- Automatic test equipment (ATE)
- Instrumentation and process controls
- Precision medical equipment
- Low-power, battery-operated instruments
Functional Diagram
Related ADC
Texas Instruments ADS8881 18-bit 1-MSPS True-Differential Input ADC
Operates with a 2.5V to 5V external reference, offering a wide selection of signal ranges.
Published: 2014-02-05
| Updated: 2022-03-11