X9C103SIT1

Overview

The X9C103SIT1 is a non-volatile digital potentiometer from the Renesas XDCP™ family, housed in an 8-SOIC package. It features a single potentiometer circuit with 100 tap points and a linear taper. The end-to-end resistance is 10 kΩ with a ±20% tolerance. The device operates on a 5V supply and utilizes a 3-wire serial interface (U/D, INC, CS). Key electrical parameters include a typical wiper contact resistance of 40 Ω and a temperature coefficient of ±300 ppm/°C.

Feature Summary

• Non-volatile memory retains wiper position data upon power-up
• 100-tap resolution with linear resistance taper
• Low-power CMOS technology with standby current of 750 µA max
• High reliability rated for 100,000 data changes per bit

Applications

• Solid-state replacement for mechanical potentiometers
• Audio volume control circuits
• Voltage reference adjustment
• Gain setting in instrumentation amplifiers

Procurement Notes

Verify the specific suffix 'I' indicates industrial temperature range (-40°C to +85°C) versus 'Z' for commercial range (0°C to 70°C). Confirm packaging type (Reel vs Tube) matches production requirements. Check manufacturer datasheets for latest pinout and electrical specifications before finalizing design.

Selection Notes

Select this component when non-volatile storage of the wiper position is required without external battery backup. Ensure the 10 kΩ resistance value fits the target circuit impedance. Verify that the 3-wire serial interface is compatible with the host microcontroller's available GPIO or SPI pins.

Part Context

This part belongs to the X9C10x series of digitally controlled potentiometers. Variants such as X9C102 (5 kΩ), X9C103 (10 kΩ), and X9C104 (50 kΩ) share identical pinouts and functionality but differ in total resistance values. The 'S' denotes SOIC-8 packaging, while 'T1' typically indicates tape and reel packaging.

Replacement Considerations

Direct functional substitutes within the same package include X9C102SIT1 and X9C104SIT1, provided the resistance value difference is acceptable for the application. Cross-brand equivalents require verification of pin compatibility and voltage levels.