Hot-selling and scarce AD7376ARU10 +-15 V Operation Digital Potentiometer TSSOP14 spot stock

Product Descriptions

The AD7376 provides a single channel, 128-position digitallycontrolled variable resistor (VR) device. This device performs thesame electronic adjustment function as a potentiometer or variable resistor. These products were optimized for instrument andtest equipment applications where a combination of high voltagewith a choice between bandwidth or power dissipation are available as a result of the wide selection of end-to-end terminal resistance values. The AD7376 contains a fixed resistor with a wipercontact that taps the fixed resistor value at a point determined bya digital code loaded into the SPI-compatible serial-input register. The resistance between the wiper and either endpoint of thefixed resistor varies linearly with respect to the digital code transferred into the VR latch. The variable resistor offers a completelyprogrammable value of resistance between the A terminal and thewiper or the B terminal and the wiper. The fixed A to B terminalresistance of 10 kΩ, 50 kΩ, 100 kΩ or 1 MΩ has a nominal temperature coefficient of –300 ppm/°C .

The VR has its own VR latch which holds its programmed resistance value. The VR latch is updated from an internal serial-toparallel shift register which is loaded from a standard 3-wireserial-input digital interface. Seven data bits make up the dataword clocked into the serial data input register (SDI). Only thelast seven bits of the data word loaded are transferred into the7-bit VR latch when the CS strobe is returned to logic high. Aserial data output pin (SDO) at the opposite end of the serialregister allows simple daisy-chaining in multiple VR applicationswithout additional external decoding logic.

Product Features

128 Position

Potentiometer Replacement

10 k, 50 k, 100 k, 1 M

Power Shutdown: Less than 1 A

3-Wire SPI Compatible Serial Data Input

+5 V to +30 V Single Supply Operation

5 V to 15 V Dual Supply Operation

Midscale Preset

Product Applications

Mechanical Potentiometer Replacement

Instrumentation: Gain, Offset Adjustment

Programmable Voltage-to-Current Conversion

Programmable Filters, Delays, Time Constants

Line Impedance Matching

Power Supply Adjustment

Product Photos

For more product information, please download the PDF