CAT5132ZI-00G-MP

Digital Potentiometers Overview

The CAT5132ZI-00G-MP is a single-channel digital potentiometer IC from onsemi, featuring 128 taps and an I2C serial interface. It operates with a digital supply voltage range of 2.7 V to 5.5 V and supports analog supplies up to 16 V. The device includes non-volatile memory for wiper setting storage, ensuring data retention for 100 years. Key electrical parameters include a 10 kΩ end-to-end resistance (indicated by '00' suffix in some contexts, though datasheet lists 10k/50k/100k options), linear taper, and a temperature coefficient of 300 PPM/°C. It functions within an industrial temperature range of -40°C to +85°C.

Digital Potentiometers Feature Summary

• I2C Serial Interface with 7-bit Wiper Control Register
• Non-Volatile Memory with 100-Year Data Retention
• High Voltage Operation: Analog Supply up to 16 V
• Single Potentiometer with 128 Taps and Linear Taper

Digital Potentiometers Applications

• LCD Screen Adjustment
• Volume Control
• Gain Adjustment
• Line Impedance Matching
• VCOM Setting Adjustments

Digital Potentiometers Procurement Notes

Verify the specific resistance value associated with the '00' suffix against the official onsemi datasheet, as standard listings often specify 10 kΩ, 50 kΩ, or 100 kΩ variants. Confirm package availability in MSOP-10 format. Check for current production status, as some CAT5132 variants may be subject to End-of-Life notices. Ensure compatibility with system I2C bus speeds and voltage levels.

Digital Potentiometers Selection Notes

Select this component when high-voltage analog signal control is required alongside low-voltage digital logic interfaces. The 128-tap resolution provides finer adjustment granularity compared to 32-tap alternatives like the CAT5112. Verify that the 10 kΩ resistance option matches the circuit impedance requirements. Ensure the design accommodates the 2.7 V to 5.5 V digital supply and up to 16 V analog supply constraints.

Digital Potentiometers Part Context

This part belongs to the CAT5132 family of 16 Volt Digitally Programmable Potentiometers. It serves as an electronic replacement for mechanical potentiometers in applications requiring automated adjustments. The 'ZI' suffix typically denotes the MSOP-10 package and industrial temperature range, while 'GT3' or similar suffixes indicate tape-and-reel packaging options.

Digital Potentiometers Replacement Considerations

Direct substitutes within the same family include CAT5132ZI-10-GT3 (10 kΩ) or CAT5132ZI-50-GT3 (50 kΩ). For lower tap counts, the CAT5112 series offers 32 taps but lacks the high-voltage analog supply capability. Cross-reference pinouts and I2C addresses to ensure compatibility.