Digital Potentiometers (POTs) | CAT5191
Digital Potentiometer (POT), 256-Tap, I2C Compatible, Extended Temperature Range
概览
The CAT5191 is a 256-position linear taper digital POT ideally suited for replacing mechanical potentiometers and variable resistors.
The wiper settings are controlled through an I2C-compatible digital interface. Upon power-up, the wiper assumes a midscale position and may be repositioned anytime after the power is stable. The device can be programmed to reset the wiper position to midscale or to go to a shutdown state during operation. An address input pin, AD0, allows the connection of two devices onto the same I2C bus.
The CAT5191 operates from 2.7 V to 5.5 V, while consuming less than 2 µA. This low operating current, combined with a small package footprint, makes the CAT5191 ideal for battery-powered portable applications.
The CAT5191 is designed as a pin for pin replacement for the AD5245 and operates over the -40°C to +85°C industrial temperature range.
- Potentiometer Replacement
- Transducer Adjustment of Pressure, Temperature, Position, Chemical, and Optical Sensors
- RF Amplifier Biasing
- Gain Control and Offset Adjustment
- Industrial Equipment
- 256-position
- End-to-End Resistance: 50 kΩ
- I2C Compatible Interface
- Power-on Preset to Midscale
- Single Supply 2.7 V to 5.5 V
- Low Temperature Coefficient 100 ppm/°C
- Low Power, IDD 2 µA max
- Extended Operating Temperature -40°C to +125°C
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