The MAX5544 is a serial-input, voltage-output, 14-bit monotonic digital-to-analog converter (DAC) that operates from a single +5V supply. The DAC output is unbuffered, resulting in low 0.3mA supply current and low 1LSB offset error. The DAC output range is 0V to VREF. The DAC latch accepts a 16-bit serial word. A power-on reset circuit clears the DAC output to 0V (unipolar mode) when power is initially applied. The 10MHz 3-wire serial interface is SPI™/QSPI™/MICROWIRE™ compatible and interfaces directly with optocouplers for applications requiring isolation. The MAX5544 is available in an 8-pin SO package. It is suitable for high-resolution offset and gain adjustment, industrial process control, automated test equipment, and data acquisition systems.
The MAX5544 is a 14‑bit monotonic digital‑to‑analog converter that operates from a single +5 V supply. It provides an unbuffered voltage output ranging from 0 V to the reference voltage and features low supply current (0.3 mA) and fast 1 µs settling time. The device is available in an 8‑pin SO package and is compatible with SPI, QSPI, and MICROWIRE serial interfaces, allowing direct connection to optocouplers.
Typical applications include high‑resolution offset and gain adjustment, industrial process control, automated test equipment, and data‑acquisition systems. The datasheet details electrical characteristics, timing diagrams, pin descriptions, and guidelines for reference selection, grounding, and external buffering to achieve full 14‑bit accuracy.
| Supply Voltage (VDD) | 4.75 V – 5.25 V (±5 %) |
|---|---|
| Resolution | 14 bits |
| Power Consumption | 1.5 mW |
| Settling Time (full‑scale step) | 1 µs |
| Output Resistance | 6.25 kΩ |
| Maximum Supply Current per Pin | 0.3 mA |
| Package | 8‑pin SO |
The device operates with VDD between 4.75 V and 5.25 V (±5 %).
The typical settling time is 1 µs for a full‑scale step.
The MAX5544 is supplied in an 8‑pin SO package.
The DAC’s 3‑wire interface is compatible with SPI, QSPI, and MICROWIRE.