HomedatasheetAD8400ARZ

AD8400ARZ Datasheet

Digital Potentiometer ICs
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Description

The AD8400ARZ /AD8402/AD8403 provide a single-, dual-, or quad-channel, 256-position, digitally controlled variable resistor (VR) device.1 These devices perform the same electronic adjust-ment function as a mechanical potentiometer or variable resistor. The AD8400 contains a single variable resistor in the compact SOIC-8 package. The AD8402 contains two independent variable resistors in space-saving SOIC-14 surface-mount packages. The AD8403 contains four independent variable resistors in 24-lead PDIP, SOIC, and TSSOP packages. Each part contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by the digital code loaded into the controlling serial input register. The resistance between the wiper and either endpoint of the fixed resistor varies linearly with respect to the digital code transferred into the VR latch. Each variable resistor offers a completely programmable value of resistance between the A terminal and the wiper or the B terminal and the wiper. The fixed A-to-B terminal resistance of 1 kΩ, 10 kΩ, 50 kΩ, or 100 kΩ has a ±1% channel-to-channel matching tolerance with a nominal temperature coefficient of 500 ppm/°C. A unique switching circuit minimizes the high glitch inherent in traditional switched resistor designs, avoiding any make-before-break or break-before-make operation. AD8400ARZ Features • 256-position variable resistance device• Replaces 1, 2, or 4 potentiometers• 1 kΩ, 10 kΩ, 50 kΩ, 100 kΩ• Power shutdown—less than 5 μA• 3-wire,SPI-compatible serial data input• 10 MHz update data loading rate• 2.7 V to 5.5 V single-supply operation• Qualified for automotive applications AD8400ARZ Applications • Mechanical potentiometer replacement• Programmable filters, delays, time constants• Volume control, panning• Line impedance matching• Power supply adjustmen
Features

Parameters

[{"Name":"Resistance","Value":"1 kOhms "},{"Name":"Temperature Coefficient ","Value":"500 PPM / C"},{"Name":"Tolerance","Value":"20 % "},{"Name":"Number of POTs","Value":"Single "},{"Name":"Taps per POT","Value":"256 "},{"Name":"Wiper Memory","Value":"Volatile"},{"Name":"Digital Interface","Value":"SPI "},{"Name":"Operating Supply Voltage ","Value":"5.5 V "},{"Name":"Package / Case","Value":"SOIC-8"},{"Name":"Packaging","Value":"Tube "}]

Manufacturer information

FAIRCHILD SEMICONDUCTOR

Fairchild has a rich history as a pioneer in the semiconductor industry and that pioneering spirit endures today. In an era where diversity can dilute focus and hamper innovation, we specialize in the development and manufacturing of a complete portfolio of low- to high-power solutions for the mobile, industrial, cloud, automotive, lighting, and computing industries. Fairchild is one of the most reliable partners in the industry, offering the shortest time from concept to silicon, expert FAEs for customer support, and a flexible, multi-source supply chain. Our vision is clear – anticipate the power efficiencies demanded by tomorrow’s electronic products and deliver an amazing design experience

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