ADS131A04
Overview
The ADS131A02 and ADS131A04 devices are twoand four-channel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs). The wide dynamic range, with scalable data rates up to 128 kSPS, and internal fault monitors make the ADS131A02 or ADS131A04 a good choice when designing for energy monitoring, grid protection, and control applications.
- 1 2 or 4 simultaneous-sampling differential inputs
- Data rates up to 128 kSPS
- High performance: - Single-channel accuracy: better than 0.1% at 10,000:1 dynamic range - Effective resolution: 20.6 bits at 8 kSPS - THD: -100 dB at 50 Hz and 60 Hz
- Integrated negative charge pump allows absolute input voltages below ground
- Flexible analog power-supply operation: - Using negative charge pump: 3.0 V to 3.45 V - Unipolar supply: 3.3 V to 5.5 V - Bipolar supply: ±2.5 V
- Digital supply: 1.65 V to 3.6 V
- Low-drift internal voltage reference: 6 ppm/°C
- ADC self checks
- Cyclic redundancy check (CRC) and hamming code error correction on communications
- Multiple SPI data interface modes: - Asynchronous interrupt - Synchronous master and slave
