Renesas X9C104SIZ

Overview

X9C104SIZ from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100-kΩ end-to-end resistance, 100 wiper tap points, nonvolatile memory for power-up recall, ±5 V terminal voltage rating, and 8-lead SOIC package rated for -40°C to +85°C operation. It functions as a solid-state three-terminal potentiometer or two-terminal variable resistor in analog signal conditioning and system calibration circuits.

For engineers reviewing the X9C104SIZ datasheet, X9C104SIZ pinout, X9C104SIZ application, or X9C104SIZ equivalent, this device supports precise digital trimming of gain, offset, and bias in industrial sensor interfaces, programmable power supply feedback networks, audio volume control, and embedded system parameter adjustment where nonvolatile setting retention is required.

Technical Context

The X9C104SIZ implements a 99-element resistor array with make-before-break wiper switching, controlled via a three-wire serial interface (CS, U/D, INC) using negative-edge-triggered increment logic. Its 7-bit up/down counter drives a decoder selecting one of 100 wiper positions, with storage into nonvolatile memory triggered by CS↑ while INC = HIGH.

Internal charge pump enables ±5 V analog terminal operation from a single 5 V supply; wiper resistance is typically 40 Ω, and absolute linearity is ±1 MI (±1% of RTOTAL). The device enters low-power standby (≤750 µA) when deselected and retains wiper position for ≥100 years.

Key Specifications

Pinout & Package

Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, surface-mount, 3.90 mm × 4.90 mm body, 1.27 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9C104SIZ, AD5243BRMZ100 offers dual-channel capability and finer resolution but demands I²C infrastructure, while MCP41HV51-104E/SN supports wider analog voltage swing and SPI simplicity but lacks integrated charge pump for true bipolar operation from 5 V.

Availability

X9C104SIZ is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, audio volume control, and embedded system parameter trim requiring stable component supply and long-term obsolescence management.

Supply support for X9C104SIZ 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 manufacturer delivering high-performance microcontrollers, analog, and power solutions for industrial, automotive, and IoT applications.

The X9C104SIZ belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in systems requiring repeatable, nonvolatile, and digitally programmable analog resistance.

FAQ

What is the maximum allowable voltage difference between VH/RH and VL/RL terminals for X9C104SIZ?

The maximum voltage difference (ΔV) between VH/RH and VL/RL terminals for X9C104SIZ is 10 V, as specified in the Absolute Maximum Ratings table. Exceeding this limit risks permanent damage to the internal resistor array or wiper switches, regardless of individual terminal voltage compliance with the ±5 V rating.

Does X9C104SIZ require an external power supply for its analog terminals?

No, X9C104SIZ does not require an external analog supply. Its internal charge pump allows the VH/RH and VL/RL terminals to operate over ±5 V using only the single 5 V VCC supply, eliminating need for dual-rail or split-supply circuitry.

How is wiper position stored and recalled in X9C104SIZ?

Wiper position is stored in nonvolatile memory when CS transitions HIGH while INC is held HIGH; it is automatically recalled at power-up once VCC reaches its final value. The X9C104SIZ retains this setting for ≥100 years without external backup power.

Can X9C104SIZ be used in a two-terminal configuration?

Yes, X9C104SIZ can be used as a two-terminal variable resistor by connecting either VH/RH or VL/RL to VW/RW and leaving the other fixed terminal unconnected or grounded, enabling current-limiting or gain-setting functions without full three-terminal topology.

What is the typical wiper resistance of X9C104SIZ and how does it affect circuit accuracy?

The typical wiper resistance of X9C104SIZ is 40 Ω, with a maximum of 100 Ω. In high-impedance voltage divider applications, this series resistance introduces insertion error; accuracy improves when load impedance exceeds 10× RTOTAL (i.e., >1 MΩ for 100 kΩ part).