CAT5171: Digital Potentiometer (POT), 256-Tap, I2C Compatible
The CAT5171 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 CAT5171 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 CAT5171 ideal for battery-powered portable applications.The CAT5171 is designed as a pin for pin replacement for the AD5245 and operates over the -40°C to +85°C industrial temperature range.
Features- 256-position
- End-to-End Resistance: 50 kΩ, 100 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
- Wide Operating Temperature -40°C to +85°C
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Applications- Potentiometer Replacement
- Transducer Adjustment of Pressure, Temperature, Position, Chemical, and Optical Sensors
- RF Amplifier Biasing
- Gain Control and Offset Adjustment
| End Products |
Data Sheets (1)
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| CAT5171TBI-00GT3 | Active | Pb-free
Halide free | SOT-23-8 | 527AK | 1 | Tape and Reel | 3000 | $0.5333 |
| CAT5171TBI-50GT3 | Active | Pb-free
Halide free | SOT-23-8 | 527AK | 1 | Tape and Reel | 3000 | $0.5333 |
Specifications
| Product | # of Pots | # of Taps | Type | Control Interface | Resistance Typ (kΩ) | VH Max (V) | Wiper Position Memory | VDD Max (V) |
|---|
| CAT5171TBI-00GT3 | 1 | 256 | Potentiometer | I2C | 100 | VCC | No | 5.5 |
| CAT5171TBI-50GT3 | 1 | 256 | Potentiometer | I2C | 50 | VCC | No | 5.5 |
