Renesas X9314WSZ

Overview

X9314WSZ from Intersil is a solid-state, nonvolatile, digitally controlled potentiometer with 32 log-taper taps, 10kΩ end-to-end resistance, and three-wire up/down serial interface; it functions as a programmable analog trim element in precision biasing, gain control, and offset adjustment circuits operating from 5V ±10% supply.

For engineers reviewing the X9314WSZ datasheet, X9314WSZ pinout, X9314WSZ application, or X9314WSZ equivalent, this device delivers deterministic wiper positioning with nonvolatile recall, low 40Ω typical wiper resistance, and industrial-grade voltage tolerance (±5V across terminals), making it suitable for embedded trimming where power-cycle persistence and analog signal integrity are critical.

Technical Context

The X9314WSZ implements a 5-bit up/down counter driving a 32-position decoder that selects one of 31 resistive elements in series; wiper movement is edge-triggered via INC input with direction controlled by U/D logic level, enabling discrete stepwise resistance adjustment without microcontroller firmware overhead.

Nonvolatile storage occurs only when CS transitions HIGH while INC is HIGH, latching the current counter value into EEPROM-like memory; upon power-up, the stored tap position is automatically recalled, ensuring repeatable startup resistance without host initialization.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (M8.15), RoHS-compliant, 0°C to +70°C operating temperature range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5241BRMZ10 and MCP41010-I/P, the X9314WSZ offers lowest system-level pin count (3 control lines), minimal wiper resistance, and deterministic nonvolatile store timing-making it optimal for cost-sensitive, space-constrained trimming where simplicity and analog fidelity are prioritized over communication protocol flexibility.

Availability

X9314WSZ is available at Aetrix Electronics and suitable for audio volume control, DC bias trimming, LED brightness adjustment, and power supply feedback tuning requiring stable component supply across commercial temperature range (0°C to +70°C) and long-term calibration retention.

Supply support for X9314WSZ 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

Intersil Corporation, now part of Renesas Electronics, designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.

The X9314WSZ belongs to Intersil's XDCP™ (eXternally Controlled Digital Potentiometer) family, engineered specifically for replacing mechanical potentiometers in trimming, calibration, and analog signal conditioning circuits where nonvolatile setting retention and robustness are essential.

FAQ

What is the operating temperature range for the X9314WSZ?

The X9314WSZ is rated for 0°C to +70°C (Commercial grade), as confirmed in the Ordering Information table on page 2 of FN8178 Rev 3.00. This distinguishes it from industrial variants like X9314WMIZ-3 (–40°C to +85°C). The X9314WSZ uses an 8-lead SOIC package (M8.15) and is not specified for extended temperature operation.

How does nonvolatile storage work in the X9314WSZ?

Nonvolatile storage in the X9314WSZ occurs only when the Chip Select (CS) input transitions from LOW to HIGH while the Increment (INC) input is held HIGH. This specific timing condition triggers the internal EEPROM-like memory to latch the current 5-bit wiper position. Upon next power-up, the X9314WSZ automatically recalls that stored value and configures the wiper accordingly.

Can the X9314WSZ be used with bipolar analog signals?

Yes, the X9314WSZ supports ±5V voltage across its VH/RH and VL/RL terminals relative to VSS, as stated in the Absolute Maximum Ratings and Potentiometer Characteristics tables. This allows direct use in bipolar op-amp circuits, AC-coupled signal paths, and other applications where signal swing extends below ground-without requiring external level-shifting components.

What is the wiper resistance specification for the X9314WSZ?

The X9314WSZ has a typical wiper resistance of 40Ω, with a maximum of 100Ω under test conditions of IW = ±1mA and VCC = 5V (page 4, Potentiometer Characteristics table). This low value minimizes insertion loss and maintains accuracy in high-impedance feedback networks where the X9314WSZ is commonly deployed.

Is the X9314WSZ pin-compatible with other members of the X9314 family?

Yes, all X9314 variants-including X9314WSZ, X9314WSIZ, and X9314WMIZ-3-share identical 8-pin SOIC or MSOP footprints and pin assignments per the Pin Configuration diagrams on page 2. However, differences in VCC range, temperature grade, and marking do not affect physical or electrical pin compatibility; only the operating envelope and qualification differ.