The AD7899 is a fast, low-power, 14-bit A/D converter that operates from a single 5 V supply. It features a 2.2 µs successive-approximation ADC, a track/hold amplifier, 2.5 V reference, on-chip clock oscillator, signal conditioning circuitry, and a high-speed parallel interface.
The AD7899 is a 14‑bit successive‑approximation analog‑to‑digital converter that operates from a single 5 V supply and consumes as little as 80 mW typical. It features a 2.2 µs conversion time, 400 kSPS maximum throughput, and a high‑speed parallel data bus that can interface with 3 V or 5 V processors.
The device supports multiple input voltage ranges (±10 V, ±5 V, ±2.5 V, 0‑2.5 V, 0‑5 V) with built‑in over‑voltage protection, an internal 2.5 V reference, and optional external clocking. Pin‑out, timing characteristics, and ordering information are provided for system integration. This manual is written in Chinese.
| Resolution | 14 bits |
|---|---|
| Maximum Throughput | 400 kSPS |
| Power Consumption (typical) | 80 mW |
| Supply Voltage | 5 V single supply |
| Input Voltage Ranges | ±10 V, ±5 V, ±2.5 V, 0‑2.5 V, 0‑5 V |
It includes an internal 2.5 V reference.