AD7242/AD7244 is a fast, complete, dual 12-bit/14-bit voltage output D/A converter. It consists of a 12-bit/14-bit DAC, 3 V buried Zener reference, DAC output amplifiers and high speed serial interface logic.
The AD7242 and AD7244 are dual, complete serial DACs offering 12‑bit (AD7242) or 14‑bit (AD7244) resolution with on‑chip voltage reference and output amplifiers. They operate from a +5 V supply and provide a bipolar ±3 V output range. The devices feature a high‑speed serial interface, separate LDAC inputs for each DAC, and are available in 24‑pin DIP or 28‑pin SOIC packages.
The document includes detailed electrical specifications, timing characteristics, pin configurations, circuit descriptions, and layout recommendations. It also provides ordering guides, mechanical dimensions, and application notes for optimal PCB design and noise reduction.
| Resolution (AD7242) | 12 bits |
|---|---|
| Resolution (AD7244) | 14 bits |
| Integral Nonlinearity (AD7242) | +1.5 LSB max |
| Output Voltage Range | +3 V |
| Positive Power Supply (Vpp) | +5 V |
| Total Power Dissipation | 195 mW max |
The REF OUT is specified as 2.99 V to 3.01 V at 25 °C.
The device is offered in a 24‑pin DIP package.
The short‑circuit current is 20 mA typical.