This document describes the features and characteristics of the AD7545A product. The AD7545A is a 12-bit CMOS multiplying DAC with internal data latches. It is an improved version of the industry standard AD7545, featuring faster interface timing and lower cost.
The AD7545A is a 12‑bit CMOS multiplying DAC with internal data latches, offering a fast WR pulse width of 100 ns and compatibility with 8‑ and 16‑bit microprocessors. It is available in 20‑lead DIP, SOIC, PLCC and leadless ceramic packages.
The document lists detailed electrical specifications, absolute maximum ratings, and recommended application circuits, including unipolar and bipolar configurations, single‑supply operation, and microprocessor interfacing methods. It also includes ordering information for the various temperature‑grade versions.
| Resolution | 12 bits |
|---|---|
| Gain Error | ±4 LSB max |
| Gain Temperature Coefficient | ±5 ppm/°C max |
| Output Leakage Current (OUT1) | 10 nA max |
| Current Settling Time | 1 µs max |
| Propagation Delay | 200 ns max |
The WR pulse width is 100 ns, allowing interfacing to fast 8‑bit and 16‑bit microprocessors.
K and L grades operate from 0 °C to +70 °C; B and C grades from 25 °C to +85 °C; T and U grades from –55 °C to +125 °C.
The AD7545A is offered in 20‑lead DIP, SOIC, PLCC and leadless ceramic (LCCC) packages.
The maximum gain error is ±4 LSB.