Hot-selling and scarce AD8403ARU1 1-/2-/4-Channel Digital Potentiometers TSSOP24 spot stock

Product Descriptions

The AD8400/AD8402/AD8403 provide a single, dual or quadchannel, 256 position digitally controlled variable resistor (VR)device . These devices perform the same electronic adjustmentfunction as a potentiometer or variable resistor . The AD8400contains a single variable resistor in the compact SO-8 package .The AD8402 contains two independent variable resistors inspace saving SO-14 surface mount package . The AD8403 contains four independent variable resistors in 24-lead PDIP, SOICand TSSOP packages .  Each part contains a fixed resistor with awiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the controlling serial inputregister . The resistance between the wiper and either endpointof the fixed resistor varies linearly with respect to the digitalcode transferred into the VR latch . Each variable resistor offersa completely programmable value of resistance, between the Aterminal and the wiper or the B terminal and the wiper . Thefixed A to B terminal resistance of 1 kΩ, 10 kΩ, 50 kΩ or 100 kΩhas a ±1% channel-to-channel matching tolerance with a nominaltemperature coefficient of 500 ppm/°C . A unique switching circuit minimizes the high glitch inherent in traditional switchedresistor designs avoiding any make-before-break or break-beforemake operation .

Product Features

256 Position

Replaces 1, 2 or 4 Potentiometers

1 k, 10 k, 50 k, 100 k

Power Shut Down—Less than 5 A

3-Wire SPI Compatible Serial Data Input

10 MHz Update Data Loading Rate

+2.7 V to +5.5 V Single-Supply Operation

Midscale Preset

Product Applications

Mechanical Potentiometer Replacement

Programmable Filters, Delays, Time Constants

Volume Control, Panning

Line Impedance Matching

Power Supply Adjustment

Product Specification

Product Photos

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