The AD7656A is a 16‑bit, 250 kSPS, six‑channel, simultaneous‑sampling ADC with bipolar inputs and low power consumption.
The AD7656A integrates six independent 16‑bit SAR ADCs in a single 64‑pin LQFP package, offering true bipolar analog inputs selectable for ±10 V or ±5 V ranges. It features parallel and high‑speed serial interfaces, including SPI/QSPI/MICROWIRE compatibility, and supports daisy‑chain operation.
Designed with iCMOS® technology, the device provides a 250 kSPS throughput, 12 MHz input bandwidth, 86.5 dB SNR, and low power consumption (140 mW at 250 kSPS, 5 V). The datasheet includes detailed pin configurations, timing specifications, absolute maximum ratings, and typical performance graphs. This manual is written in Chinese.
| Sampling rate | 250 kSPS |
|---|---|
| Resolution | 16 bits |
| Number of ADC channels | 6 |
| Power consumption (normal mode, static) | 143 mW |
The AD7656A can sample at up to 250 kSPS.
It provides six independent 16‑bit ADC channels.
Typical power consumption is 140 mW at 250 kSPS with a 5 V supply.
Yes, the device can be connected in a daisy‑chain using its serial interface.