AD5522JSVDZ datasheet(5/65 Pages) AD

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AD5522

Data Sheet

Rev. E | Page 4 of 64

GENERAL DESCRIPTION

The AD5522 is a high performance, highly integrated parametric

measurement unit consisting of four independent channels. Each

per-pin parametric measurement unit (PPMU) channel includes

five 16-bit, voltage output DACs that set the programmable input

levels for the force voltage inputs, clamp inputs, and comparator

inputs (high and low). Five programmable force and measure

current ranges are available, ranging from ±5 µA to ±80 mA.

Four of these ranges use on-chip sense resistors; one high current

range up to ±80 mA is available per channel using off-chip sense

resistors. Currents in excess of ±80 mA require an external ampli-

fier. Low capacitance DUT connections (FOHx and EXTFOHx)

ensure that the device is suited to relayless test systems.

The PMU functions are controlled via a simple 3-wire serial

interface compatible with SPI, QSPI™, MICROWIRE™, and DSP

interface standards. Interface clocks of 50 MHz allow fast updating

of modes. The low voltage differential signaling (LVDS) interface

protocol at 83 MHz is also supported. Comparator outputs are

provided per channel for device go-no-go testing and character-

ization. Control registers allow the user to easily change force or

measure conditions, DAC levels, and selected current ranges.

The SDO (serial data output) pin allows the user to read back

information for diagnostic purposes.

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