The document describes the features and characteristics of Analog Devices' dual 12-bit (8-bit byte) double-buffered CMOS D/A converter DAC8248. The product features two matched 12-bit DACs, direct interface with 8-bit microprocessors, 12-bit resolution with an 8-bit data bus, double-buffered digital inputs, RESET to zero pin, 12-bit endpoint linearity, etc. It is suitable for applications such as multichannel microprocessor-controlled systems, robotics/process control/automation, automatic test equipment, programmable attenuators, power supplies, window comparators, instrumentation equipment, battery operated equipment, etc.
The DAC8248 is a dual 12‑bit, double‑buffered CMOS digital‑to‑analog converter with an 8‑bit wide data bus that interfaces directly to 8‑bit microprocessors. It offers two matched DAC channels, latch‑up resistance, and improved ESD protection, packaged in 24‑pin DIP, plastic DIP or SOL formats.
Typical applications include multichannel microprocessor‑controlled systems, robotics, process control, automatic test equipment, and instrumentation. The datasheet details electrical characteristics, timing diagrams, grounding recommendations, and interface circuits for easy integration with microprocessors such as the MC6809 and MC68008.
| Resolution | 12 bits |
|---|---|
| Supply Voltage Range | +5 V to +15 V |
| Full‑Scale Gain Error | ±1 LSB (typical) |
| Power Supply Rejection Ratio (PSRR) | 0.002 %/ % (ΔVDD = ±5 %) |
The DAC8248 can be powered from a single supply voltage between +5 V and +15 V.
The device contains two independent 12‑bit DAC channels on a single chip.
It is offered in 24‑pin Cerdip, 24‑pin plastic DIP, and 24‑pin SOL (metal) packages.