Renesas X9315WMZ-2.7

Overview

X9315WMZ-2.7 from Intersil is a low-noise, low-power, 32-tap digitally controlled potentiometer (XDCP™) implemented with 31 resistive elements and nonvolatile memory. It operates from 2.7V to 5.5V, delivers ±20% end-to-end resistance tolerance at 10kΩ, and features a 3-wire serial interface (CS/U/D/INC) for wiper position control in analog signal conditioning circuits.

For engineers reviewing the X9315WMZ-2.7 datasheet, X9315WMZ-2.7 pinout, X9315WMZ-2.7 application, or X9315WMZ-2.7 equivalent, this device supports precise, repeatable analog trimming in battery-powered instrumentation, sensor biasing, and programmable gain stages where power efficiency, retention after power loss, and temperature-stable resistance ratio are critical selection criteria.

Technical Context

The X9315WMZ-2.7 integrates a 5-bit up/down counter, nonvolatile EEPROM storage, and a resistor array with make-before-break wiper switching. Its control logic responds to negative-edge-triggered INC pulses while U/D sets direction, and CS enables selection and initiates nonvolatile store on rising edge with INC high.

It implements solid-state potentiometer functionality without mechanical wear, with wiper resistance ranging from 400Ω to 1000Ω at 2.7V supply and absolute linearity error limited to ±1 MI (minimum increment = RTOTAL/31). The device maintains wiper position across power cycles via 100-year data retention and supports 100,000 write cycles per bit.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Pb-free), JEDEC MO-187AA compliant, dimensions 3.0mm × 3.0mm × 0.85mm (M8.118).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ10 and MCP41010-I/P, the X9315WMZ-2.7 uniquely combines 3-wire simplicity, guaranteed power-up wiper recall, and ultra-low standby current-making it optimal for maintenance-free analog trimming in energy-constrained, single-supply systems.

Availability

X9315WMZ-2.7 is available at Aetrix Electronics and suitable for instrumentation calibration, sensor signal conditioning, and programmable power supply applications requiring stable component supply, long-term obsolescence management, and RoHS-compliant packaging.

Supply support for X9315WMZ-2.7 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) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, communications, and computing markets.

The X9315 product line was designed specifically for replacing mechanical potentiometers in analog trimming applications-emphasizing reliability, nonvolatile retention, and low-voltage operation in space- and power-constrained systems.

FAQ

What is the supply voltage range for the X9315WMZ-2.7?

The X9315WMZ-2.7 operates from 2.7V to 5.5V, enabling direct use with common 3.3V logic rails and single-cell lithium batteries. This range is explicitly defined in the datasheet's Recommended Operating Conditions table and differs from the standard X9315 (5V ±10%). The X9315WMZ-2.7 maintains full functionality-including wiper movement, storage, and nonvolatile recall-across this entire voltage window.

Does the X9315WMZ-2.7 retain its wiper position after power loss?

Yes, the X9315WMZ-2.7 stores the wiper position in nonvolatile EEPROM memory. Upon power-up, it automatically recalls the last stored value and sets the wiper accordingly. This behavior is guaranteed for 100 years and survives 100,000 store cycles-making the X9315WMZ-2.7 ideal for applications where manual recalibration is impractical or impossible.

How many wiper positions does the X9315WMZ-2.7 support?

The X9315WMZ-2.7 provides 32 discrete wiper tap points, corresponding to 31 equal resistive segments in its internal array. Each tap represents a 1/31 increment of total resistance (≈3.23%), delivering predictable, monotonic voltage division. This resolution is fixed and confirmed in the device's block diagram, pin description, and electrical specifications.

What package type is used for the X9315WMZ-2.7?

The X9315WMZ-2.7 is supplied in an 8-lead MSOP (Mini Small Outline Plastic) package, Pb-free and RoHS-compliant, with JEDEC MO-187AA footprint (drawing M8.118). Its compact 3.0mm × 3.0mm body and 0.65mm lead pitch support high-density PCB layouts-distinct from SOIC or PDIP variants of the X9315 family.

Can the X9315WMZ-2.7 be used as a two-terminal variable resistor?

Yes, the X9315WMZ-2.7 can operate as a two-terminal variable resistor by connecting either RH/VH or RL/VL to RW/VW and using the remaining terminal with the wiper. This configuration is explicitly supported in the datasheet's Applications Information section and Basic Configurations diagrams, enabling current-limiting and gain-setting functions without requiring three independent connections.