Renesas X9C103PIZ

Overview

X9C103PIZ from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with nonvolatile wiper position storage, 10 kΩ end-to-end resistance, ±20% tolerance, and ±5 V terminal voltage rating. It operates as a three-terminal voltage divider or two-terminal variable resistor in analog signal conditioning circuits requiring repeatable, power-loss-immune trimming.

For engineers reviewing the X9C103PIZ datasheet, X9C103PIZ pinout, X9C103PIZ application, or X9C103PIZ equivalent, this device delivers precise digital control of analog gain, offset, and bias settings in industrial sensor interfaces, programmable power supplies, and audio level controls - with verified 100-year data retention and 100,000-cycle endurance.

Technical Context

The X9C103PIZ uses a 7-bit up/down counter decoded to select one of 100 wiper tap points across its 99-resistor array, with make-before-break switching ensuring continuity during position changes. Its internal charge pump enables ±5 V analog terminal operation while powered solely from a 5 V supply.

Wiper position is stored in nonvolatile memory upon CS↑ with INC = HIGH, and automatically recalled at power-up. The three-wire serial interface (CS, U/D, INC) requires no clock or data lines beyond these signals, and supports negative-edge-triggered increment/decrement with 2 µs minimum cycle time.

Key Specifications

Pinout & Package

Package: 8-lead PDIP (Plastic Dual-In-Line Package), RoHS-compliant, through-hole mountable (MDP0031 outline).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5204BRUZ10 and MCP41010-I/P, the X9C103PIZ uniquely combines single-channel simplicity, 100-tap resolution, and autonomous power-loss recovery - eliminating firmware dependencies for calibration-critical industrial systems.

Availability

X9C103PIZ is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply trim, and audio level control requiring stable component supply, long-term calibration integrity, and through-hole assembly compatibility.

Supply support for X9C103PIZ 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 microcontrollers, analog, power, and connectivity solutions for industrial, automotive, and infrastructure markets.

The X9C103PIZ belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in applications demanding long-term stability, repeatable digital adjustment, and autonomous power-cycle recovery.

FAQ

What is the maximum voltage that can be applied across the VH/RH and VL/RL terminals of the X9C103PIZ?

The X9C103PIZ specifies a maximum differential voltage ΔV = |VH/RH − VL/RL| of 10 V. This limit applies regardless of individual terminal voltages, which must each remain within −5 V to +5 V relative to VSS. Exceeding 10 V across the end terminals risks irreversible damage to the internal resistor array, as confirmed in the Absolute Maximum Ratings table on page 4 of FN8222 Rev 4.00. The X9C103PIZ must never be operated outside these bounds.

Does the X9C103PIZ require an external clock or data line to operate its three-wire interface?

No, the X9C103PIZ does not require an external clock or serial data line. Its three-wire interface consists solely of CS (chip select), U/D (up/down direction), and INC (increment), with timing governed by edge-triggered transitions on INC. The datasheet confirms all control is synchronous to the negative edge of INC, and no additional clock or data signals are defined or required for basic wiper positioning or NVM store operations.

How is wiper position stored and recalled in the X9C103PIZ?

Wiper position is stored in nonvolatile memory when CS transitions from LOW to HIGH while INC is held HIGH; the device then enters standby mode. Upon power-up, the X9C103PIZ automatically recalls the last stored value and positions the wiper accordingly - no external command or initialization sequence is needed. This behavior is explicitly documented in the "Principles of Operation" section (page 6) and "Power-up and Down Requirements" (page 5) of FN8222 Rev 4.00.

Can the X9C103PIZ be used in a bipolar signal path with −5 V to +5 V inputs?

Yes, the X9C103PIZ supports bipolar analog operation: VH/RH and VL/RL terminals are each rated for −5 V to +5 V relative to VSS, and the internal charge pump enables this full range from a single 5 V VCC supply. This capability is confirmed in the "Pin Descriptions" (page 3), "Absolute Maximum Ratings" (page 4), and "Principles of Operation" (page 6) sections of FN8222 Rev 4.00 - making it suitable for AC-coupled or dual-rail signal conditioning without external level shifters.

What is the wiper resistance specification for the X9C103PIZ, and how does it affect circuit performance?

The X9C103PIZ specifies a typical wiper resistance (RW) of 40 Ω, with a maximum of 100 Ω at ±1 mA wiper current. This series resistance directly impacts minimum achievable output impedance and introduces gain error in precision voltage divider configurations - especially at low RTOTAL values or high-frequency signals where RW interacts with parasitic capacitance. The value is measured and guaranteed per Electrical Specifications (page 4, symbol RW) and must be factored into error budgets for high-accuracy applications.