The AD7864 from Analog Devices is a high‑speed, low‑power 4‑channel simultaneous‑sampling 12‑bit analog‑to‑digital converter that operates from a single 5 V supply. It integrates a successive‑approximation ADC, four track‑and‑hold amplifiers, an on‑chip reference, and a high‑speed parallel interface.
The device offers selectable input ranges (±10 V/±5 V, 0‑2.5 V/0‑5 V, or ±2.5 V) and supports both hardware and software channel sequencing. Typical power consumption is 90 mW, with a standby mode as low as 20 µW, making it suitable for portable and power‑sensitive applications such as motor control and data acquisition.
| Conversion time per channel | 1.65 µs max |
|---|---|
| Typical power consumption (normal mode) | 90 mW |
| Supply voltage | 5 V ±5% |
The conversion time per channel is 1.65 µs maximum.
The AD7864 has four channels that can be sampled simultaneously.
Typical power consumption in normal mode is about 90 mW.
AD7864‑1 supports ±10 V and ±5 V, AD7864‑2 supports 0‑2.5 V and 0‑5 V, and AD7864‑3 supports ±2.5 V.