Overview
The CAT5171TBI-00GT3, produced by onsemi, is a 256-position digital linear taper potentiometer designed to replace mechanical potentiometers and variable resistors. It features an I2C-compatible digital interface, allowing for precise control over the wiper settings. Upon power-up, the wiper assumes a mid-scale position and can be repositioned once the power supply is stable. This device is particularly suited for battery-powered portable applications due to its low operating current and small package footprint.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Positions | 256 | - |
| End-to-End Resistance | 100 kΩ | kΩ |
| Supply Voltage Range | 2.7 V to 5.5 V | V |
| Operating Temperature Range | −40°C to +85°C | °C |
| Package Type | SOT-23-8 | - |
| Power Consumption | < 2 μA | μA |
| Temperature Coefficient | 100 ppm/°C | ppm/°C |
| Interface | I2C Compatible | - |
Key Features
- 256-position digital linear taper potentiometer
- I2C-compatible digital interface
- Power-on preset to mid-scale position
- Single supply operation from 2.7 V to 5.5 V
- Low power consumption, < 2 μA
- Wide operating temperature range: −40°C to +85°C
- Small package footprint: SOT-23-8 (2.9 mm x 3 mm)
- Pb-Free, Halogen Free/BFR Free, and RoHS Compliant
Applications
- Potentiometer replacement
- Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
- RF amplifier biasing
- Gain control and offset adjustment
Q & A
- What is the primary function of the CAT5171TBI-00GT3?
The CAT5171TBI-00GT3 is a 256-position digital linear taper potentiometer designed to replace mechanical potentiometers and variable resistors. - What interface does the CAT5171TBI-00GT3 use for control?
The device uses an I2C-compatible digital interface. - What is the power-on default position of the wiper?
The wiper assumes a mid-scale position upon power-up. - What is the operating voltage range of the CAT5171TBI-00GT3?
The device operates from 2.7 V to 5.5 V. - How much power does the CAT5171TBI-00GT3 consume?
The device consumes less than 2 μA. - What is the temperature coefficient of the CAT5171TBI-00GT3?
The temperature coefficient is 100 ppm/°C. - In what package is the CAT5171TBI-00GT3 available?
The device is available in an SOT-23-8 package. - Is the CAT5171TBI-00GT3 RoHS compliant?
Yes, the device is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant. - What are some typical applications of the CAT5171TBI-00GT3?
Typical applications include potentiometer replacement, transducer adjustment, RF amplifier biasing, and gain control and offset adjustment. - How many devices can be connected on the same I2C bus using the AD0 pin?
Up to two devices can be individually addressed using the AD0 pin.
