Renesas X9314WS-3T1

Overview

X9314WS-3T1 from Intersil is a nonvolatile digitally controlled potentiometer (XDCP™) with 32 log-taper taps, 10kΩ end-to-end resistance, and three-wire up/down serial interface; it serves as a solid-state replacement for mechanical potentiometers in precision analog trimming applications such as audio volume control and sensor calibration.

For engineers reviewing the X9314WS-3T1 datasheet, X9314WS-3T1 pinout, X9314WS-3T1 application, or X9314WS-3T1 equivalent, this device offers verified nonvolatile wiper position storage, ±5V terminal voltage tolerance, 40Ω typical wiper resistance, 3V–5.5V supply operation, and compatibility with industrial temperature range (-40°C to +85°C) designs requiring stable analog adjustment without recalibration after power cycles.

Technical Context

The X9314WS-3T1 implements a 5-bit up/down counter driving a 31-element resistor array with make-before-break electronic switches; wiper position is selected via CS, U/D, and edge-triggered INC inputs, enabling discrete tap selection without microcontroller firmware overhead.

Nonvolatile memory stores the last wiper position upon CS↑ while INC = HIGH, ensuring automatic recall at power-up; the device operates in standby mode (<500µA) when deselected, and supports bidirectional wiper movement with hard limits preventing wraparound beyond tap 0 or 31.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (M8.118), RoHS-compliant, Pb-free plus anneal finish.

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 X9314WS-3T1 uniquely combines log taper, true nonvolatile power-up recall, and ultra-low GPIO count (3 pins), making it optimal for cost-sensitive, low-pin-count embedded systems requiring perceptually accurate analog control without firmware overhead.

Availability

X9314WS-3T1 is available at Aetrix Electronics and suitable for audio volume control, sensor offset calibration, power supply trim, and industrial DAC output scaling requiring stable component supply and guaranteed long-term availability.

Supply support for X9314WS-3T1 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-3T1 belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered specifically for replacing mechanical trimmers in industrial, medical, and audio systems where reliability, nonvolatility, and analog signal integrity are critical.

FAQ

What is the operating voltage range for the X9314WS-3T1?

The X9314WS-3T1 operates from 3V to 5.5V on VCC, and its VH/RH and VL/RL terminals tolerate voltages from –5V to +5V relative to VSS. This dual-range capability allows direct integration into both unipolar and bipolar analog signal paths without external level-shifting circuitry. The X9314WS-3T1 maintains full functionality across this supply range, including nonvolatile store and recall operations.

Does the X9314WS-3T1 retain its wiper position after power loss?

Yes, the X9314WS-3T1 stores the wiper position in nonvolatile memory when CS transitions HIGH while INC is HIGH, and automatically recalls that value at power-up. This 100-year data retention eliminates the need for boot-time calibration or external memory. The X9314WS-3T1 resumes operation at the last-stored tap position within 500µs after VCC stabilizes.

What is the maximum current the X9314WS-3T1 wiper can handle?

The X9314WS-3T1 wiper is rated for ±1mA continuous current and ±8.8mA for 10-second pulses. Exceeding ±1mA risks increased wiper resistance drift or long-term degradation. For applications involving higher currents, external buffering with an op-amp is recommended. The X9314WS-3T1's 40Ω typical wiper resistance is optimized for low-current analog signal conditioning, not power path control.

Can the X9314WS-3T1 be used as a two-terminal variable resistor?

Yes, the X9314WS-3T1 can operate as a two-terminal variable resistor by connecting either VH/RH or VL/RL to VW/RW, leaving the unused terminal open or grounded depending on configuration. In this mode, resistance varies from near-zero (at wiper extremes) to 10kΩ (full array). The X9314WS-3T1 retains all timing, nonvolatile, and voltage rating specifications in two-terminal mode.

Is the X9314WS-3T1 pin-compatible with other packages in the X9314 family?

No - the X9314WS-3T1 uses the 8-lead MSOP package (M8.118), while SOIC variants (e.g., X9314WSIZ) use M8.15. Though both have identical pin functions and numbering, their physical dimensions, lead pitch (0.65mm vs. 1.27mm), and thermal characteristics differ. PCB layout must match the specific package; the X9314WS-3T1 cannot be substituted onto an SOIC footprint without redesign.