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CAT5116 Datasheet(PDF) 1 Page - Catalyst Semiconductor |
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CAT5116 Datasheet(HTML) 1 Page - Catalyst Semiconductor |
1 / 12 page CAT5116 © 2007 Catalyst Semiconductor, Inc. 1 Doc. No. MD-2118 Rev. K Characteristics subject to change without notice Log-Taper, 100-Tap Digitally Programmable Potentiometer (DPP™) FEATURES 100-position, log-taper potentiometer Non-volatile EEPROM wiper storage 10nA ultra-low standby current Single-supply operation: 2.5V – 5.5V Increment Up/Down serial interface Resistance value: 32kΩ Available in 8-pin MSOP, TSSOP, SOIC and DIP packages APPLICATIONS Automated product calibration Remote control adjustments Offset, gain and zero control Audio volume control Sensor adjustment Motor controls and feedback systems Programmable analog functions For Ordering Information details, see page 11. FUNCTIONAL DIAGRAM DESCRIPTION The CAT5116 is a log-taper single digitally program- mable potentiometer (DPP™) designed as a electro- nic replacement for mechanical potentiometers. Ideal for automated adjustments on high volume production lines, DPP ICs are well suited for applica- tions where equipment requiring periodic adjustment is either difficult to access or located in a hazardous or remote environment. The CAT5116 contains a 100-tap series resistor array connected between two terminals RH and RL. An up/down counter and decoder that are controlled by three input pins, determines which tap is connected to the wiper, RW. The wiper setting, stored in nonvolatile memory, is not lost when the device is powered down and is automatically reinstated when power is returned. The wiper can be adjusted to test new system values without effecting the stored setting. Wiper-control of the CAT5116 is accomplished with three input control pins, CS ¯¯ , U/D ¯, and INC ¯¯¯. The INC ¯¯¯ input increments the wiper in the direction which is determined by the logic state of the U/D ¯ input. The CS ¯¯ input is used to select the device and also store the wiper position prior to power down. The digitally programmable potentiometer can be used as a three-terminal resistive divider or as a two-terminal variable resistor. RH 165Ω 11Ω 10.4Ω LOG TAPER RTOT= 32kΩ RL Control and Memory Power On Recall VCC VCC GND U/D INC CS RH RL RW RW Potentiometer Schematic Block Diagram General INTERFACE & WIPER CONTROL EEPROM GND Potentiometer R = 32kΩ RH RW RL U/D INC CS |
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Descripción similar - CAT5116 |
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