The MAX503 is a low-power, 10-bit, voltage-output digital-to-analog converter (DAC) that uses single 5V or dual ±5V supplies. This device has an internal voltage reference plus an output buffer amplifier. Operating current is only 250µA from a single 5V supply, making it ideal for portable and battery-powered applications. In addition, the shrink small-outline package (SSOP) measures only 0.1 square inches, using less board area than an 8-pin DIP. 10-bit resolution is achieved through laser trimming of the DAC, op amp, and reference. No further adjustments are necessary. Internal gain-setting resistors can be used to define a DAC output voltage range of 0V to +2.048V, 0V to +4.096V, or ±2.048V. Four-quadrant multiplication is possible without the use of external resistors or op amps. The parallel logic inputs are double buffered and are compatible with 4-bit, 8-bit, and 16-bit microprocessors. For a hardware and software compatible 12-bit upgrade, refer to the MAX530 data sheet. For DACs with similar features but with a serial data interface, refer to the MAX504/MAX515 data sheet.
The MAX503 is a low‑power, 10‑bit voltage‑output DAC that operates from a single 5 V supply or dual +5 V supplies. It includes an internal 2.048 V reference and an output buffer amplifier, delivering a typical operating current of only 250 µA, making it suitable for battery‑powered and portable applications.
The document lists detailed electrical characteristics, absolute maximum ratings, pin configurations, and typical operating curves. It also covers recommended grounding and bypass practices, as well as digital and analog feedthrough behavior, to help designers achieve optimal performance in single‑supply or bipolar configurations.
| Resolution | 10 Bits |
|---|---|
| Operating Current (single 5 V supply) | 250 µA |
| Shutdown‑Mode Current | 40 µA |
| Internal Reference Voltage | 2.048 V |
| Operating Temperature Range (C) | 0 °C to +70 °C |
| Short‑Circuit Current (single supply) | 12 mA |
The MAX503 draws about 250 µA from a single 5 V supply.
It includes an internal 2.048 V voltage reference.
The DAC operates with Vpp between 4.5 V and 5.5 V for single‑supply operation.