The MAX522 is a dual-channel 8-bit digital-to-analog converter with low power consumption and a compact SO package. It can be used for voltage adjustment, current source, bias control, and VCO tuning.
The MAX522 is a dual 8‑bit voltage‑output digital‑to‑analog converter offered in 8‑pin SO and DIP packages. It operates from a single +2.7 V to +5.5 V supply and uses a 3‑wire serial interface compatible with SPI, QSPI, and Microwire standards. Each DAC channel has its own buffered output, with DAC A capable of 5 mA source/sink current and DAC B up to 500 µA.
The document provides absolute maximum ratings, detailed electrical characteristics, timing specifications, pin descriptions, and recommended PCB layout practices. It also includes typical operating curves, shutdown behavior, and example applications such as programmable voltage sources and VCO tuning.
| Supply Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Supply Current (operating) | < 1 mA |
| Shutdown Supply Current | 0.1 pA |
| Resolution | 8 bits |
| Differential Nonlinearity (DNL) | +1 LSB |
| DAC A Output Current | 5 mA source/sink |
| DAC B Output Current | 500 µA source/sink |
| Maximum Serial Clock Rate | 5 MHz |
The MAX522 operates from a single supply voltage between 2.7 V and 5.5 V.
In shutdown mode the device draws about 0.1 pA of supply current.
The serial interface can operate at clock rates up to 5 MHz.
Each DAC channel provides an 8‑bit resolution.