Analog Devices Inc. AD717x 低功耗 Σ-Δ 模数转换器

Analog Devices AD717x 系列提供了一套完整的集成 Σ-Δ 模数转换器解决方案。设计人员可以在高精度、低噪声、单通道应用以及更高速多路复用应用中采用 AD717x 模数转换器。尽管 AD717x Σ-Δ 模数转换器主要设计用于测量接近直流的信号，但该器件也提供出色的性能，输入带宽达到约 10kHz。

特性

5SPS to 250kSPS fast and flexible output rate
Channel scan data rate of 50kSPS/channel (20µs settling)
Performance Specifications
- 17.2 Noise-free bits @ 250kSPS
- 20 Noise-free bits @ 2.5kSPS
- 24 Noise-free bits@ 20SPS
- INL: ±1ppm of FSR

85dB rejection of 50Hz and 60Hz with 50ms settling
User Configurable Input Channels
- 2 Fully differential channels or 4 single-ended channels
- Crosspoint multiplexer
On-chip 2.5V reference (±2ppm/°C drift)
True rail-to-rail analog and reference input buffers