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CAT5114VI-50-G Datasheet(PDF) 1 Page - ON Semiconductor |
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CAT5114VI-50-G Datasheet(HTML) 1 Page - ON Semiconductor |
1 / 15 page CAT5114 © 2008 SCILLC. All rights reserved. 1 Doc. No. MD-2007 Rev. R Characteristics subject to change without notice 32-Tap Digitally Programmable Potentiometer (DPP™) FEATURES 32-position linear taper potentiometer Non-volatile EEPROM wiper storage Low standby current Single supply operation: 2.5V – 6V Increment up/down serial interface Resistance values: 10kΩ, 50kΩ and 100kΩ Available in PDIP, SOIC, TSSOP, MSOP and space saving 2 x 2.5mm TDFN packages APPLICATIONS Automated product calibration Remote control adjustments Offset, gain and zero control Tamper-proof calibrations Contrast, brightness and volume controls Motor controls and feedback systems Programmable analog functions For Ordering Information details, see page 14. DESCRIPTION The CAT5114 is a single digitally programmable potentiometer (DPP™) designed as a electronic replacement for mechanical potentiometers and trim pots. Ideal for automated adjustments on high volume production lines, they are also well suited for applications where equipment requiring periodic adjustment is either difficult to access or located in a hazardous or remote environment. The CAT5114 contains a 32-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 affecting the stored setting. Wiper-control of the CAT5114 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. DPPs bring variability and programmability to a wide variety of applications including control, parameter adjustments, and signal processing. FUNCTIONAL DIAGRAM RH/VH RL/VL Control and Memory Power On Recall VCC GND U/D INC CS RH/VH RL/VL RW/VW RW/VW Electronic Potentiometer Implementation Detailed General 32-POSITION DECODER 31 30 29 28 2 1 0 TRANSFER GATES RESISTOR ARRAY 5-BIT NONVOLATILE MEMORY STORE AND RECALL CONTROL CIRCUITRY 5-BIT UP/DOWN COUNTER VCC GND RH/VH RW/VW RL/VL U/D INC CS |
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