QA-1000HC

(1) Manual soldering is recommended using standard eutectic Sn63Pb solder. NOTE: Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum ratings for extended periods may affect device reliability.

The QA-1000HC is a configurable analog supply current monitor, designed for loadboard applications. Its low internal resistance ensures its transparency (causing only a negligible voltage drop when inserted into the supply or ground path of the device under test). The module is designed to be inserted between the DUT supply provided by the ATE and the supply pin of the DUT or between ground and DUT ground. The VDUT supply can be positive or negative (VDD/VCC or VSS/VEE).

The QA-1000HC is designed to accurately measure analog (supply) currents up to 2A (upon demand the range can be adapted to 100mA, 200mA, 500mA, 1A or 5A), thereby providing a high measurement repeatability. The monitor has a bandwidth of 5MHz, offers a resolution of 300A @2A, and is capable to drive high capacitive loads up to 100uF. The resolution and performance of the monitor is a function of the selected bandwidth and the value of the loading capacitance CL (the DUT local on-pin supply decoupling capacitance).

The QA-1000HC has no digital control pins. It measures continuously and relies for further signal processing and decision making on the capabilities of the mixed-signal ATE. The QA-1000HC provides an analog output voltage, corresponding to the measured current. The figure shows a block diagram of the QA-1000HC as well as a typical application diagram. The output has a 50 impedance for optimum RF performance. The low resistive output can be customised when AF performance is preferred.

The QA-1000HC consists of 2 active units, a measurement unit (MU) and a processing unit (PU). The measurement unit is a fast and sensitive current measurement device that converts the measured analog current in a corresponding voltage. The processing unit is configurable and provides amplification and filtering functionality. The QA-1000HC has a low internal resistance between its VDUT and DUT terminals, therefore the voltage at the DUT terminal closely follows the supply voltage applied at its VDUT terminal within a -7V to +7V range. The QA-1000HC has a broad application range.

Examples are the application to high-power ICs and during voltage stress test applications. By using two QA-1000-HC
monitors, supply currents of analog DUTs with (symmetrical) +/- supply can also be measured simultaneously.