Renesas X9313WSZ-3

Overview

X9313WSZ-3 from Intersil is a digitally controlled potentiometer (XDCP™) with 32 linear tap positions, 3-wire serial interface (CS/U/D/INC), nonvolatile wiper position storage, and 10kΩ end-to-end resistance. It operates from 3V to 5.5V, supports ±VCC terminal voltages, and is housed in an 8-lead SOIC package. It serves as a solid-state replacement for mechanical potentiometers in precision analog trimming applications.

For engineers reviewing the X9313WSZ-3 datasheet, X9313WSZ-3 pinout, X9313WSZ-3 application, or X9313WSZ-3 equivalent, key selection criteria include its 10kΩ RTOTAL tolerance (±20%), wiper resistance (40Ω typ. at 5V), 100,000-cycle endurance, 100-year data retention, and compatibility with commercial temperature range (0°C to +70°C).

Technical Context

The X9313WSZ-3 implements a 31-element resistor array with make-before-break wiper switching, enabling glitch-free tap transitions. Its 5-bit up/down counter drives a decoder that selects one of 32 wiper positions, with direction controlled by U/D and step triggered on INC falling edge.

Wiper position is stored in nonvolatile memory when CS rises while INC is high, and automatically recalled at power-up. The device supports three-terminal potentiometer and two-terminal variable resistor configurations, with terminal voltage range spanning −VCC to +VCC and absolute linearity error limited to ±1 MI (minimum increment).

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Pb-free, RoHS compliant), JEDEC MS-012-AA compliant, body dimensions 4.9mm × 3.9mm × 1.75mm (M8.15 outline).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5170BRMZ-10 and MCP41010-I/P, the X9313WSZ-3 offers simpler 3-wire control with guaranteed power-up recall, making it optimal for cost-sensitive, low-pin-count designs where deterministic startup behavior is essential.

Availability

X9313WSZ-3 is available at Aetrix Electronics and suitable for audio equipment calibration, DC power supply trimming, programmable gain amplifiers, and comparator hysteresis setting requiring stable component supply across commercial temperature range and long-term field reliability.

Supply support for X9313WSZ-3 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 is a precision analog and power management semiconductor company, now part of Renesas Electronics, delivering high-reliability solutions for industrial, infrastructure, and consumer markets.

The X9313 family was designed specifically for solid-state replacement of mechanical potentiometers in analog signal conditioning, offering nonvolatile storage, wide voltage operation, and robust endurance for field-programmable analog circuits.

FAQ

What is the maximum allowable voltage difference between VH and VL for X9313WSZ-3?

The X9313WSZ-3 supports a maximum voltage difference (ΔV = |VH − VL|) of 10V, as specified for X9313W-series devices in the Absolute Maximum Ratings table. This allows safe operation in 12V systems when used with appropriate rail clamping or within regulated sub-circuits, provided individual terminal voltages remain within −VCC to +VCC limits.

Does X9313WSZ-3 require external pull-up resistors on its control pins?

No, the X9313WSZ-3 does not require external pull-up resistors on CS, U/D, or INC inputs. Its CMOS inputs have leakage current ≤±10µA and defined VIH (≥2V) and VIL (≤0.8V) thresholds, allowing direct connection to standard microcontroller GPIOs operating at 3.3V or 5V without additional biasing components.

How is wiper position stored and recalled in X9313WSZ-3?

Wiper position is stored in nonvolatile memory when CS transitions HIGH while INC is held HIGH; the stored value is automatically recalled and loaded into the wiper counter at power-up. This ensures X9313WSZ-3 always resumes its last programmed setting without MCU intervention, supporting fail-safe analog configuration in unattended systems.

Can X9313WSZ-3 be used in a two-terminal variable resistor configuration?

Yes, X9313WSZ-3 can be configured as a two-terminal variable resistor by connecting either RH/VH or RL/VL to RW/VW and using the remaining fixed terminal with the wiper. This mode is explicitly supported in the datasheet and maintains the same 10kΩ RTOTAL specification and nonvolatile storage functionality as the three-terminal potentiometer configuration.

What is the typical wiper resistance of X9313WSZ-3 and how does it affect circuit performance?

The typical wiper resistance of X9313WSZ-3 is 40Ω at VCC = 5V. In low-impedance applications-such as setting gain in op-amp feedback networks with ≤10kΩ resistors-this adds negligible error (<0.4%). However, in high-precision voltage dividers or current-sensing paths, designers should include this value in total resistance calculations to maintain accuracy.