Renesas X9317WV8IZ-2.7

Overview

X9317WV8IZ-2.7 from Renesas Electronics is a low-noise, low-power, 100-tap digitally controlled potentiometer (XDCP™) with nonvolatile wiper position storage, 2.7V to 5.5V supply range, 10kΩ end-to-end resistance, and TSSOP-8 package. It functions as a three-terminal voltage divider or two-terminal variable resistor for precision analog trimming in embedded bias control circuits.

For engineers reviewing the X9317WV8IZ-2.7 datasheet, X9317WV8IZ-2.7 pinout, X9317WV8IZ-2.7 application, or X9317WV8IZ-2.7 equivalent, key selection criteria include its ±20% RTOTAL tolerance, 200Ω typical wiper resistance at 5V, -40°C to +85°C industrial temperature range, 100-year data retention, and 3-wire up/down serial interface compatibility with microcontroller GPIOs.

Technical Context

The X9317WV8IZ-2.7 implements a 99-element resistor array with make-before-break wiper switching, enabling glitch-free tap transitions. Its 7-bit counter drives a decoder that selects one of 100 discrete wiper positions, with position stored in nonvolatile memory on CS↑/INC↑ edge.

It operates as a solid-state replacement for mechanical potentiometers, supporting both voltage-divider (RH–RW–RL) and variable-resistor (RW–RL or RW–RH) configurations. The device features temperature-compensated resistive elements with ±300 ppm/°C total resistance TC and ±20 ppm/°C ratiometric TC, ensuring stable gain/offset trim across operating temperature.

Key Specifications

Pinout & Package

Package: 8-lead TSSOP (JEDEC MO-153, variation AC), 4.4mm × 3.0mm body, 0.65mm pitch, RoHS-compliant matte tin finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5171BRMZ-10 and MCP41HV51-103E/SN, the X9317WV8IZ-2.7 uniquely combines 3-wire GPIO simplicity, 100-tap resolution, guaranteed nonvolatile recall, and industrial temperature support - making it optimal for cost-sensitive, self-contained analog trim where firmware overhead and external memory are constrained.

Availability

X9317WV8IZ-2.7 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias control, and voltage regulator output trim requiring stable component supply across industrial temperature ranges and long product lifecycles.

Supply support for X9317WV8IZ-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

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog power, and trusted system solutions for automotive, industrial, and infrastructure markets.

The X9317 family is designed for precision analog trimming in space- and cost-constrained embedded systems, delivering solid-state reliability and nonvolatile configurability without requiring complex digital interfaces.

FAQ

What is the supply voltage range for the X9317WV8IZ-2.7?

The X9317WV8IZ-2.7 operates from 2.7V to 5.5V, supporting both 3.3V and 5V logic domains. This wide range allows direct integration into mixed-voltage systems without level shifters. The "-2.7" suffix explicitly denotes this extended low-voltage capability, distinguishing it from standard 4.5V–5.5V variants like X9317WV8IZ.

Does the X9317WV8IZ-2.7 retain its wiper position after power loss?

Yes, the X9317WV8IZ-2.7 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is triggered by a CS↑ transition while INC is HIGH, and the stored value persists for up to 100 years - eliminating manual recalibration in applications like factory-set LCD bias or laser threshold tuning.

How many wiper positions does the X9317WV8IZ-2.7 support?

The X9317WV8IZ-2.7 provides 100 discrete wiper tap points, corresponding to a 1% resolution step size across the full resistor array. This is implemented using a 99-element ladder network with endpoints, enabling precise analog adjustments such as 10mV steps in a 1V reference path.

What package type is used for the X9317WV8IZ-2.7?

The X9317WV8IZ-2.7 is housed in an 8-lead TSSOP package (JEDEC MO-153, variation AC), measuring 4.4mm × 3.0mm with 0.65mm lead pitch. This compact, surface-mount outline supports high-density PCB layouts and is compatible with standard reflow profiles including Pb-free soldering per IPC/JEDEC J-STD-020.

Can the X9317WV8IZ-2.7 be used as a two-terminal variable resistor?

Yes, the X9317WV8IZ-2.7 can operate as a two-terminal variable resistor by connecting either RH or RL to RW and using the remaining terminal with RW as the adjustable element. This configuration is commonly used for current limiting in laser diode bias circuits or gain-setting in transimpedance amplifiers, leveraging its low 200Ω typical wiper resistance.

What is the maximum wiper current rating for the X9317WV8IZ-2.7?

The X9317WV8IZ-2.7 specifies a maximum wiper current (IW) of ±4.4mA under normal operation. At 2.7V supply, wiper resistance rises to 1000Ω max, limiting usable current range - design must ensure (V_RH – V_RL) / R_TOTAL stays within this bound to avoid parametric shift or accelerated wear.