The AD7845 is the industry's first 4-quadrant multiplying D/A converter with an on-chip amplifier. It offers excellent gain ranging, voltage offsetting, etc.
This document provides a complete description of the AD7845 12‑bit multiplying DAC, including its features, applications, and functional block diagram. It explains the on‑chip output amplifier, gain ranging resistors, and the low‑power LC‑MOS process used for fabrication.
The handbook contains detailed specifications, timing characteristics, absolute maximum ratings, pin configurations, circuit diagrams for unipolar and bipolar operation, and example interface circuits for microprocessors. It also includes ordering information and mechanical dimensions for the various package options.
| Resolution | 12 bits |
|---|---|
| Unity Gain Small Signal Bandwidth | 600 kHz (typ) |
| Full Power Bandwidth | 175 kHz (typ) |
The AD7845 has a 12‑bit resolution.
The device can source up to 11 mA when the output is shorted at +25 °C.
The unity‑gain small‑signal bandwidth is typically 600 kHz.
The J and K versions operate from 0 °C to +70 °C.