The AD7863 is a high speed, low power, dual 14-bit analog-to-digital converter that operates from a single 5 V supply. It features two fast 14-bit ADCs, four input channels, simultaneous sampling and conversion, 5.2 μs conversion time, and single supply operation.
The AD7863 is a high‑speed, low‑power dual 14‑bit analog‑to‑digital converter that operates from a single 5 V supply. It contains two successive‑approximation ADCs, two track‑and‑hold amplifiers, an internal 2.5 V reference and a high‑speed parallel interface. Four analog inputs are grouped into two channels (A and B) that can be sampled and converted simultaneously, preserving phase information.
Key features include selectable input ranges (±10 V, ±2.5 V, 0‑2.5 V), a typical power consumption of 70 mW, 5.2 µs conversion time in high‑sampling mode, and over‑voltage protection up to ±17 V. The part is offered in SOIC‑28 and SSOP packages and is suited for battery‑powered, portable, and high‑throughput data‑acquisition applications.
| Resolution | 14 bits |
|---|---|
| Conversion time (Mode 1) | 5.2 µs max |
| Typical power consumption (Normal mode) | 70 mW |
| Input voltage range (AD7863‑10) | ±10 V |
| Small‑signal bandwidth | 7 MHz typ |
The conversion time is 5.2 µs maximum.
It provides two channels, each with two inputs, for a total of four analog inputs.
The device offers ±10 V (AD7863‑10), ±2.5 V (AD7863‑3) and 0‑2.5 V (AD7863‑2) ranges.