ADS8685
Features
- 16-bit ADC with integrated analog front-end
- High speed:
- ADS8681: 1 MSPS
- ADS8685: 500 k SPS
- ADS8689: 100 k SPS
- Software programmable input ranges:
- Bipolar ranges: ±12.288 V, ±10.24 V, ±6.144 V, ±5.12 V, and ±2.56 V
- Unipolar ranges: 0 V- 12.288 V, 0 V- 10.24 V, 0 V- 6.144 V, and 0 V- 5.12 V
- 5-V analog supply: 1.65-V to 5-V I/O supply
- Constant resistive input impedance ≥ 1 MΩ
- Input overvoltage protection: Up to ±20 V
- On-chip, 4.096-V reference with low drift
- Excellent performance:
- DNL: ±0.4 LSB; INL: ±0.5 LSB
- SNR: 92 d B; THD:
- 107 d B
- ALARM → high, low threshold
- multi SPI™ interface with daisy-chain
- Extended industrial temperature range:
- 40°C to +125°C
2 Applications
- Analog input modules
- Semiconductor test
- Servo drive control module
3 Description
The ADS8681, ADS8685, and ADS8689 belong to a family of integrated data acquisition system based on a successive approximation (SAR) analog-to-digital converter (ADC). The devices feature a...
