Overview
The CAT5171TBI-50GT3, 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 midscale position and can be repositioned once the power supply is stable. This device is ideal 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 | 50 kΩ | Ω |
| Operating 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 |
| I2C Clock Frequency | Up to 400 kHz | kHz |
| Address Input Pin | AD0 (allows connection of two devices on the same I2C bus) | - |
Key Features
- 256-position digital linear taper potentiometer
- I2C-compatible digital interface
- Power-on preset to midscale
- Single supply operation from 2.7 V to 5.5 V
- Low temperature coefficient of 100 ppm/°C
- Low power consumption (< 2 μA)
- Wide operating temperature range (−40°C to +85°C)
- SOT-23-8 package (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 number of positions in the CAT5171TBI-50GT3?
The CAT5171TBI-50GT3 has 256 positions. - What is the end-to-end resistance of the CAT5171TBI-50GT3?
The end-to-end resistance is 50 kΩ. - What is the operating voltage range of the CAT5171TBI-50GT3?
The operating voltage range is from 2.7 V to 5.5 V. - What is the operating temperature range of the CAT5171TBI-50GT3?
The operating temperature range is from −40°C to +85°C. - What package type is the CAT5171TBI-50GT3 available in?
The CAT5171TBI-50GT3 is available in an SOT-23-8 package. - How much power does the CAT5171TBI-50GT3 consume?
The CAT5171TBI-50GT3 consumes less than 2 μA. - What is the temperature coefficient of the CAT5171TBI-50GT3?
The temperature coefficient is 100 ppm/°C. - Can the CAT5171TBI-50GT3 be used in battery-powered applications?
Yes, it is suitable for battery-powered portable applications due to its low power consumption and small package footprint. - 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. - Is the CAT5171TBI-50GT3 RoHS compliant?
Yes, the CAT5171TBI-50GT3 is Pb-Free, Halogen Free/BFR Free, and RoHS compliant.
