Renesas X9314WS-3

Overview

X9314WS-3 from Intersil is a nonvolatile digitally controlled potentiometer (XDCP™) with 32 log-taper taps, 10kΩ end-to-end resistance, ±5V terminal voltage rating, and three-wire up/down serial interface-used for precision resistance trimming in analog signal conditioning circuits.

For engineers reviewing the X9314WS-3 datasheet, X9314WS-3 pinout, X9314WS-3 application, or X9314WS-3 equivalent, this device supports wiper position storage/recall on power-up, operates from 3V to 5.5V, delivers <500µA standby current, and is available in 8-lead MSOP packaging for space-constrained industrial control designs.

Technical Context

The X9314WS-3 implements a 5-bit up/down counter driving a 31-element resistor array with make-before-break electronic switches; wiper position is decoded to select one of 32 tap points between VH/RH and VL/RL terminals. Nonvolatile memory stores the counter value when CS transitions HIGH while INC is HIGH.

It functions as either a three-terminal potentiometer or two-terminal variable resistor. Terminal voltages support ±5V differential swing (ΔV ≤ 10V), wiper resistance is 40Ω typical, and ratiometric temperature coefficient is ±20ppm/°C-enabling stable gain/attenuation control across temperature.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (M8.118), RoHS-compliant, Pb-free plus anneal finish, 3.0mm × 3.0mm body, 0.65mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ10 and MCP41HV51-103, the X9314WS-3 uniquely combines log taper, nonvolatile storage, and ±5V analog capability in an ultra-low-pin-count 3-wire interface-making it optimal for cost-sensitive, single-channel, self-recalling analog trim applications.

Availability

X9314WS-3 is available at Aetrix Electronics and suitable for industrial sensor calibration, audio volume control, laser diode bias adjustment, and programmable gain amplifier designs requiring stable component supply and long-term parameter retention.

Supply support for X9314WS-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, now part of Renesas Electronics, designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.

The X9314WS-3 belongs to the XDCP™ family of nonvolatile digital potentiometers engineered for reliable, maintenance-free resistance trimming in industrial, medical, and test equipment where recalibration after power loss is unacceptable.

FAQ

What is the maximum allowable voltage difference between VH/RH and VL/RL for the X9314WS-3?

The X9314WS-3 specifies ΔV = |VH/RH − VL/RL| ≤ 10V. This limit ensures safe operation of the internal resistor array and switches. While each terminal supports −5V to +5V relative to VSS, the total potential across the potentiometer must not exceed 10V-critical when configuring the device in high-gain op-amp feedback loops or bipolar signal paths where differential swing is large.

Does the X9314WS-3 retain its wiper position after power cycling?

Yes, the X9314WS-3 retains its wiper position after power cycling due to integrated nonvolatile memory. When CS transitions HIGH while INC is HIGH, the current counter value is stored and recalled automatically on subsequent power-up. This behavior is intrinsic to the X9314WS-3 design and requires no external components or firmware intervention-making it ideal for applications like audio volume presets or sensor zero-point calibration that must survive unexpected outages.

Can the X9314WS-3 be used as a two-terminal variable resistor?

Yes, the X9314WS-3 can be configured 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. In this mode, resistance varies from near 0Ω (wiper at shorted terminal) to RTOTAL (wiper at opposite end). The X9314WS-3's 40Ω typical wiper resistance and make-before-break switching ensure monotonic, glitch-free adjustment-commonly used in LED current limiting or op-amp offset nulling.

What is the minimum pulse width required on the INC pin for reliable wiper movement in the X9314WS-3?

The X9314WS-3 requires a minimum INC HIGH period (t_IH) of 1µs and a minimum INC LOW period (t_IL) of 1µs, per the AC Electrical Specifications table. To guarantee robust edge detection, designers should maintain INC pulse widths ≥2µs with rise/fall times ≤500ns. These timing constraints apply regardless of U/D state and are validated across the full −40°C to +85°C temperature range specified for the X9314WS-3.

Is the X9314WS-3 RoHS compliant and what packaging does it use?

Yes, the X9314WS-3 is RoHS compliant and uses Intersil's Pb-Free Plus Anneal process with 100% matte tin termination. It is supplied in an 8-lead MSOP package (JEDEC MO-187-AA compliant, pkg drawing M8.118), measuring 3.0mm × 3.0mm with 0.65mm lead pitch. This compact, surface-mount package supports automated assembly and meets IPC/JEDEC reflow profiles for both SnPb and Pb-free soldering processes-confirmed in the official X9314WS-3 datasheet FN8178 Rev 3.00.