The AD7656/AD7657/AD7658 is a 6-channel, 16/14/12-bit, 250 kSPS, bipolar simultaneous sampling ADC from Analog Devices. It has integrated reference circuits, low power consumption, wide input bandwidth and other features. It is suitable for power line monitoring systems, instrumentation and control systems, multi-axis positioning systems and other applications.
The AD7656, AD7657, and AD7658 are six‑channel, successive‑approximation ADCs offering 250 kSPS throughput, true bipolar inputs, and selectable voltage ranges (+4×Vref or +2×Vref). They feature parallel, high‑speed serial, SPI/QSPI/MICROWIRE/DSP‑compatible interfaces and on‑chip reference buffers.
These devices are intended for power‑line monitoring, instrumentation, control, and multi‑axis positioning systems. Typical power consumption is 140 mW in normal operational mode, with a standby power of 100 pW. The parts operate over a temperature range of –40 °C to +125 °C (Y version).
| Throughput rate | 250 kSPS |
|---|---|
| Signal‑to‑Noise Ratio | 86.5 dB at 50 kHz |
The devices support a maximum throughput of 250 kSPS.