The AD7845 is the first DAC which has a full 4-quadrant multiplying capability and an output amplifier on chip.
The AD7845 is a 12‑bit CMOS multiplying DAC featuring a full‑4‑quadrant capability and an on‑chip output amplifier. It integrates precision linear components and digital circuitry on a single LC2MOS process chip, allowing simple microprocessor interfacing via standard CS and WR signals.
The device is offered in DIP, LCC, PLCC and SOIC packages and includes three on‑chip application resistors for gain ranging and offset adjustment. Detailed specifications cover accuracy, power supply requirements, timing, and absolute maximum ratings, while application circuits illustrate programmable gain amplifier, current source, and 4‑20 mA loop implementations.
| Power Supply Range | VDD +15 V, VSS –15 V |
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The device operates with a +15 V VDD and –15 V VSS supply.