The AD7819 is a high speed, microprocessor-compatible, 8-bit analog-to-digital converter with a maximum throughput of 200 kSPS. The converter operates off a single 2.7 V to 5.5 V supply and contains a 4.5 µs successive approximation A/D converter, track/hold circuitry, on-chip clock oscillator and 8-bit wide parallel interface. The parallel interface is designed to allow rapid reading of the converter's results. The AD7819 converter also includes a low power mode, which can reduce power consumption to 57.75 µW when the input signal is stopped.
The AD7819 is a high‑speed, microprocessor‑compatible 8‑bit analog‑to‑digital converter offering up to 200 kSPS throughput. It operates from a single 2.7 V to 5.5 V supply and includes on‑chip track‑and‑hold, a charge‑redistribution DAC, and an 8‑bit parallel interface for easy connection to microprocessors and DSPs.
The device features automatic power‑down to reduce consumption in low‑throughput applications, and it is available in three package types: 16‑lead DIP, SOIC, and TSSOP. Detailed specifications cover dynamic performance, power consumption, timing, and absolute maximum ratings.
| Operating Supply Range | 2.7 V to 5.5 V |
|---|---|
| Resolution | 8 Bits |
| Conversion Time | 4.5 µs max |
| Automatic Power‑Down Power | 57.75 µW @ 1 kSPS (VDD = 3 V) |
| Input Voltage Range | 0 V to VREF |
The conversion time is specified as 4.5 µs maximum.
The analog input can range from 0 V up to the reference voltage (VREF).