CAT5132ZI-00-GT3

Digital Potentiometers Overview

The CAT5132ZI-00-GT3 is a single-channel digital potentiometer IC from onsemi, featuring 128 linear taps and an I2C serial interface. It operates with a digital supply voltage (VCC) of 2.7 V to 5.5 V and supports an analog supply range (V+) from +8 V to +16 V. The device includes non-volatile memory for wiper settings, ensuring data retention without power. Key electrical parameters include a standby current of 15 μA and an end-to-end resistance typically available in 10 kΩ, 50 kΩ, or 100 kΩ variants. It functions within an industrial temperature range of -40°C to +85°C and is housed in a 10-pin MSOP package.

Digital Potentiometers Feature Summary

• Single linear digital potentiometer with 128 tap positions
• Non-volatile wiper setting storage with automatic recall at power-up
• I2C serial bus interface for control and configuration
• Analog supply range supporting up to 16 V operation

Digital Potentiometers Applications

• LCD screen adjustment circuits
• Volume control systems
• Mechanical potentiometer replacement
• Gain adjustment in signal processing
• Line impedance matching
• VCOM setting adjustments

Digital Potentiometers Procurement Notes

Verify the specific resistance value associated with the '00' suffix, as standard datasheets list 10 kΩ, 50 kΩ, and 100 kΩ options. Confirm availability status, as some CAT5132 variants may be subject to discontinuation notices. Ensure the selected part matches the required analog supply voltage range for the target application.

Digital Potentiometers Selection Notes

Select this component when a high-voltage digital potentiometer with non-volatile memory is required. The 128-tap resolution provides fine adjustment capabilities compared to lower-resolution devices. Verify that the system design accommodates the separate digital (VCC) and analog (V+) supply rails, as this device requires distinct voltage domains for logic and resistive elements.

Digital Potentiometers Part Context

The CAT5132 belongs to the Catalyst Semiconductor family of digitally programmable potentiometers, now manufactured by onsemi. This series is designed to replace mechanical potentiometers in applications requiring remote or automated adjustment. The ZI suffix indicates a specific tape and reel packaging option suitable for surface-mount assembly processes.

Digital Potentiometers Replacement Considerations

Direct replacements must match the 128-tap count, I2C interface, and 16 V analog supply capability. Devices like the CAT5131 offer similar functionality but may differ in voltage ratings or interface types. Verify pin compatibility and register mapping when substituting with other digital potentiometer ICs.