HomedatasheetCAT5122

CAT5122 Datasheet

16-Tap Minipot, Volatile Minipot, Up/down Interface
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Description

Features, Applications

16-Tap MiniPotTM Digitally Programmable Potentiometers with 2-Wire Interface FEATURES

s 0.3�A Ultra-low supply current s Single-supply operation: V s Glitchless switching between resistor taps s Power-on reset to midscale

s 2-Wire up/down serial interface s Resistance values: 10k, 50k and 100k s Available in SC70 and SOT-23 packages

APPLICATIONS

s LCD screen adjustment s Volume control s Mechanical potentiometer replacement s Gain adjustment s Line impedance matching

DESCRIPTION

CAT5120/5121/5122 linear-taper digitally programmable potentiometers perform the same function as a mechanical potentiometer or a variable resistor. These devices consist of a fixed resistor and a wiper contact with 32-tap points that are digitally controlled through a 2-wire up/down serial interface. The CAT5120 is configured as a potentiometer. The CAT5121 and CAT5122 are configured as variable resistors. See Pin Configurations for part functionality. Three resistance values are available: , 50k and 100k. These are available in space-saving 5-pin and 6-pin SC70 and SOT-23 packages.

2004 by Catalyst Semiconductor, Inc. Characteristics subject to change without notice

Pin Number Pin Name 2 3 VDD GND U/D Power Supply Ground Up/Down Control Input. With CS low, a low-to-high transition increments or decrements the wiper position. Chip Select Input. A high-to-low CS transition determines the mode: increment if U/D is high, or decrement if U/D is low. Low Terminal of Resistor Wiper Terminal of Resistor High Terminal of Resistor Pin Function

Ordering Part Number CAT5122TPI-00-T CAT5122TPI-00-T10 Resistor K Top Mark JE_ JEYM JF_ JFYM JGYM JG_ JGYM JH_ JHYM JJ_ JJYM JK_ JKYM JB_ JBYM JC_ JCYM JD_ JDYM Pin Package 6 Lead SC70 6 Lead SC70 6 Lead SOT-23 6 Lead SOT-23 6 Lead SC70 6 Lead SC70 6 Lead SOT-23 6 Lead SOT-23 6 Lead SC70 6 Lead SC70 6 Lead SOT-23 6 Lead SOT-23 6 Lead SC70 6 Lead SC70 6 Lead SOT-23 6 Lead SOT-23 6 Lead SC70 6 Lead SC70 6 Lead SOT-23 6 Lead SOT-23 6 Lead SC70 6 Lead SC70 6 Lead SOT-23 6 Lead SOT-23 5 Lead SC70 5 Lead SC70 5 Lead SOT-23 5 Lead SOT-23 5 Lead SC70 5 Lead SC70 5 Lead SOT-23 5 Lead SOT-23 5 Lead SC70 5 Lead SC70 5 Lead SOT-23 5 Lead SOT-23 Parts Per Reel 3k 10k


Features

Parameters

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Manufacturer information

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