Renesas X9C102SIZT2

Overview

X9C102SIZT2 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 wiper tap points, nonvolatile memory for power-up recall, ±20% end-to-end resistance tolerance, and 5V single-supply operation. It functions as a solid-state three-terminal potentiometer or two-terminal variable resistor in analog signal trimming and calibration circuits.

For engineers reviewing the X9C102SIZT2 datasheet, X9C102SIZT2 pinout, X9C102SIZT2 application, or X9C102SIZT2 equivalent, key selection criteria include its 1kΩ end-to-end resistance, -40°C to +85°C industrial temperature range, SOIC-8 package, 7-bit up/down counter interface, and nonvolatile wiper position storage capability.

Technical Context

The X9C102SIZT2 uses a 7-bit up/down counter driving a 100-position decoder to select taps across a 99-resistor linear array. Wiper movement is controlled via negative-edge-triggered INC, level-sensitive U/D, and active-low CS signals - enabling precise digital adjustment without external microcontroller firmware overhead.

Its internal charge pump supports ±5V terminal voltage swing relative to VSS while operating from a single 5V supply, and "make-before-break" switching prevents open-circuit transients during wiper transitions. Nonvolatile memory retains the last stored wiper position for automatic restoration at power-up.

Key Specifications

Pinout & Package

Package: 8-lead narrow-body SOIC (M8.15E footprint), RoHS-compliant, surface-mountable with 1.27mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally controlled potentiometer applications.

Compared with AD5171BRMZ-10 and MCP41HV51-103E/SN, the X9C102SIZT2 provides deterministic 1kΩ impedance, guaranteed power-up recall without firmware dependency, and native ±5V analog compatibility - making it optimal for self-contained industrial calibration subsystems.

Availability

X9C102SIZT2 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply trimming, and analog signal conditioning requiring stable component supply and long-term parameter retention.

Supply support for X9C102SIZT2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics is a global semiconductor leader delivering high-performance microcontrollers, analog, and power solutions for industrial, automotive, and infrastructure markets.

The X9C102SIZT2 belongs to Renesas' XDCP™ digitally controlled potentiometer family, designed specifically for replacing mechanical trimmers in analog signal-path calibration where reliability, nonvolatility, and single-supply operation are critical.

FAQ

What is the end-to-end resistance value of the X9C102SIZT2?

The X9C102SIZT2 has a nominal end-to-end resistance of 1kΩ with a tolerance of ±20%, as specified in the FN8222 datasheet. This value is fixed per device variant and confirmed in the Ordering Information table - X9C102 denotes the 1kΩ version. The resistance remains stable across the -40°C to +85°C operating range with a temperature coefficient of ±600 ppm/°C.

Does the X9C102SIZT2 retain its wiper position after power cycling?

Yes, the X9C102SIZT2 retains its last stored wiper position in nonvolatile memory and automatically recalls it upon power-up. This behavior is guaranteed by its EEPROM-based storage architecture, which provides 100-year data retention and 100,000 write cycles per bit - eliminating the need for host MCU initialization code to restore settings after reset or power loss.

Can the X9C102SIZT2 operate with bipolar analog signals?

Yes, the X9C102SIZT2 supports bipolar analog signals: its VH/RH and VL/RL terminals accept voltages from -5V to +5V relative to VSS, enabled by an internal charge pump. This allows direct interfacing with ±5V op-amp circuits or AC-coupled signal paths without external level-shifting components - a key differentiator from many competing digital potentiometers.

What package type is used for the X9C102SIZT2?

The X9C102SIZT2 uses an 8-lead narrow-body SOIC package conforming to JEDEC MS-012-AA and Renesas drawing M8.15E. It features a 1.27mm lead pitch, RoHS-compliant matte tin plating, and is rated for industrial temperature operation (-40°C to +85°C). The "SIZ" suffix in the part number explicitly denotes this SOIC package with industrial temperature grade.

How is wiper position stored in nonvolatile memory on the X9C102SIZT2?

Wiper position is stored in nonvolatile memory on the X9C102SIZT2 when CS transitions from LOW to HIGH while the INC input is held HIGH. This store command is edge-triggered and does not require sustained timing - once executed, the device enters standby mode. The stored value persists through power cycles and is automatically loaded into the wiper counter at next power-up.