This document describes the AD5522, a quad parametric measurement unit with integrated 16-bit level setting DACs. The product features multiple measurement functions and programmable current ranges, making it suitable for applications such as automated test equipment.
The AD5522 is a high‑performance quad parametric measurement unit (PMU) with four independent channels. Each channel includes five 16‑bit DACs for programmable force‑voltage, force‑current, measure‑voltage, measure‑current, and clamp settings, offering current ranges from +5 pA to +80 mA.
The device is controlled via a 3‑wire serial interface compatible with SPI, QSPI, MICROWIRE, DSP, and LVDS standards, and includes on‑chip comparators and guard amplifiers. Applications include automated test equipment, source‑measure units, and precision measurement systems. The datasheet also contains ordering information for the 80‑lead TQFP package options.
| AVDD Supply Voltage | 2 V to 10 V |
|---|---|
| Output Voltage Span | 22.5 V |
| Maximum Output Current (external range) | ±80 mA |
| Noise Spectral Density (FV mode) | 320 nV/√Hz at 1 kHz |
| Short‑Circuit Current Limit (FV mode) | ±150 mA |
The device provides a programmable output voltage span of 22.5 V.
It supports SPI, QSPI, MICROWIRE, DSP, and LVDS serial interfaces.
An external sense resistor allows up to ±80 mA per channel.
The part is offered in an 80‑lead thin quad flat package (TQFP) with exposed pad on either the top or bottom.