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AD1315

Part Number	AD1315
Manufacturer	Analog Devices
Description	High Speed Active Load with Inhibit Mode
Published	Mar 23, 2005
Detailed Description	a FEATURES +50 mA Voltage Programmable Current Range 1.5 ns Propagation Delay Inhibit Mode Function High Speed Different...
Datasheet	AD1315 PDF File

Overview

a FEATURES +50 mA Voltage Programmable Current Range 1.
5 ns Propagation Delay Inhibit Mode Function High Speed Differential Inputs for Maximum Flexibility Hermetically Sealed Small Gull Wing Package Compatible with AD1321, AD1324 Pin Drivers APPLICATIONS Automatic Test Equipment Semiconductor Test System Board Level Test System High Speed Active Load with Inhibit Mode AD1315 FUNCTIONAL BLOCK DIAGRAM PRODUCT DESCRIPTION The AD1315 is a complete, high speed, current switching load designed for use in linear, digital or mixed signal test systems.
By combining a high speed monolithic process with a unique surface mount package, this product attains superb electrical performance while preserving optimum packaging densities in an ultrasmall 16-lead, hermetically sealed gull wing package.
Featuring current programmability of up to +50 mA, the AD1315 is designed to force the device under test to source or sink the programmed IOHPROG and IOLPROG currents.
The IOH and IOL currents are determined by applying a corresponding voltage (5 V = 50 mA) to the IOH and IOL pins.
The voltageto-current conversion is performed within the AD1315 thus allowing the current levels to be set by a standard voltage out digital-to-analog converter.
The AD1315’s transition from IOH to IOL occurs when the output voltage of the device under test slews above or below the programmed threshold, or commutation voltage.
The commuta- tion voltage is programmable from 2 V to +7 V, covering the large spectrum of logic devices while able to support the large current specifications (48 mA) typically associated with line drivers.
To test I/O devices, the active load can be switched into a high impedance state (Inhibit mode) electrically removing the active load from the path through the Inhibit mode feature.
The active load leakage current in Inhibit is typically 20 nA.
The Inhibit input circuitry is implemented utilizing high speed differential inputs with a common-mode voltage range of 7 volts and a maxi...

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