This document introduces an ADC product called AD7658/AD7657/AD7656, which features 6 independent ADC channels and true bipolar analog inputs. The selectable input ranges are ±10V or ±5V. The product has a fast throughput rate of 250 kSPS and is suitable for supply voltages ranging from 4.5V to 5.5V. In addition, it features low power consumption, wide input bandwidth, and parallel/serial interface.
The AD7658, AD7657 and AD7656 are six‑channel, 12/14/16‑bit successive‑approximation ADCs that operate from a single 4.5 V to 5.5 V supply and deliver up to 250 kSPS throughput. They offer true bipolar inputs, selectable voltage ranges, low‑power operation, and both high‑speed parallel and serial interfaces.
The handbook contains detailed electrical specifications, timing diagrams, pin‑out tables, power‑down modes, layout recommendations, ordering information, and mechanical dimensions, helping designers integrate the devices into power‑line monitoring, instrumentation, and multi‑axis positioning systems.
| Throughput Rate | 250 kSPS |
|---|---|
| Input Voltage Ranges | +10 V, +5 V selectable |
| Standby Current | 5 pA max |
| Signal‑to‑Noise Ratio | 85 dB at 50 kHz |
| Input Capacitance | 30 pF typ |
| Package | 64‑Lead LQFP |
The devices can sample at up to 250 kSPS.
The ADCs provide selectable ranges of +10 V or +5 V.
Standby current is limited to 5 pA max.