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 AD7819 to be directly connected to an 8-bit microprocessor.
The AD7819 is a high‑speed, microprocessor‑compatible 8‑bit ADC offering up to 200 kSPS throughput. It operates from a single 2.7 V to 5.5 V supply, features an on‑chip track‑and‑hold, and provides an 8‑bit parallel data bus for easy interfacing with most microprocessors and DSPs.
The device is available in 16‑lead DIP, SOIC, and TSSOP packages. It includes automatic power‑down between conversions (Mode 2) for ultra‑low power use, or continuous operation (Mode 1) for high‑speed sampling. Detailed timing, pin functions, and typical connection diagrams are provided to aid hardware design.
| Resolution | 8 Bits |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V |
| Normal Operation Power Consumption | 10.5 mW (Vpp = 3 V) |
| Conversion Time | 4.5 µs max |
| Output High Voltage (VOU) | 2.4 V min |
| Maximum Throughput | 200 kSPS |
The AD7819 operates from a single supply of 2.7 V to 5.5 V.
In Mode 2 the device automatically powers down at the end of each conversion and powers up again when a new conversion starts.
The conversion time is up to 4.5 µs.
It provides an 8‑bit wide parallel interface for data transfer.