Features: `100-position linear taper potentiometer
` Non-volatile NVRAM wiper storage; buffered wiper
` Low power CMOS technology
` Single supply operation: 2.5V-6.0V
` Increment up/down serial interface
` Resistance values: 10k, 50k and 100k
` Available in PDIP, SOIC, TSSOP and MSOP packagesApplication· 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 functionsPinout
SpecificationsSupply Voltage
VCC to GND ......................0.5V to +7V
Inputs
S to GND ....................0.5V to VCC +0.5V
INC to GND ..................0.5V to VCC +0.5V
U/D to GND ..................0.5V to VCC +0.5V
RH to GND ...................0.5V to VCC +0.5V
RL to GND ...................0.5V to VCC +0.5V
RWB to GND ..................0.5V to VCC +0.5V
Operating Ambient Temperature
Commercial ('C' or Blank suffix) .........0°C to +70°C
Industrial ('I' suffix) ............. 40°C to +85°C
Junction Temperature ...................+150°C
Storage Temperature .............65°C to +150°C
Lead Soldering (10 sec max)................+300°CDescription
The CAT5111 is a single digitally programmable potentiometer (DPP™) designed as a electronic replacement for mechanical potentiometers. 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 CAT5111 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, RWB. The CAT5111 wiper is buffered by an op amp that operates rail to rail. The wiper setting, stored in non-volatile memory, is not lost when the device is powered down and is automatically recalled when power is returned. The wiper can be adjusted to test new system values without effecting the stored setting. Wiper-control of the CAT5111 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 buffered voltage divider. For applications where the potentiometer is used as a 2-terminal variable resistor, please refer to the CAT5113. The buffered wiper of the CAT5111 is not compatible with that application.
The CAT5111 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 CAT5111 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, RWB. The CAT5111 wiper is buffered by an op amp that operates rail to rail. The wiper setting, stored in non-volatile NVRAM memory, is not lost when the device is powered down and is automatically recalled when power is returned. The wiper can be adjusted to test new system values without effecting the stored setting. Wiper-control of the CAT5111 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 ofthe U/D input. TheCS 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 buffered voltage divider. For applications where the potentiometer is used as a 2-terminal variable resistor, please refer to the CAT5113. The buffered wiper of the CAT5111 is not compatible with that application. DPPs bring variability and programmability to a broad range of applications and are used primarily to control, regulate or adjust a characteristic or parameter of an analog circuit.
CAT5111 Data Sheet
