Renesas X9317WS8IZ

Overview

X9317WS8IZ from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 3-wire serial up/down interface. It implements a 99-element resistor array with temperature-compensated end-to-end resistance tolerance of ±20%, operates from 2.7V to 5.5V, and delivers low standby current (<5µA). It functions as a three-terminal voltage divider or two-terminal variable resistor for precision analog trimming in industrial-grade systems.

For engineers reviewing the X9317WS8IZ datasheet, X9317WS8IZ pinout, X9317WS8IZ application, or X9317WS8IZ equivalent, this device supports stable DC bias adjustment, laser diode bias control, and voltage regulator output tuning - all requiring guaranteed -40°C to +85°C operation, RoHS-compliant SOIC-8 packaging, and nonvolatile recall on power-up.

Technical Context

The X9317WS8IZ uses a 7-bit up/down counter decoded to select one of 100 wiper positions across a 99-resistor array. Its "make-before-break" wiper switching ensures continuity during transitions, while nonvolatile memory stores the last wiper setting for automatic recall at power-up.

Control is implemented via three dedicated digital inputs: CS (chip select), U/D (direction), and INC (edge-triggered increment). The device enters standby mode when CS is high, drawing less than 5µA, and supports full-range VCC operation from 2.7V to 5.5V with ±300 ppm/°C total resistance temperature coefficient.

Key Specifications

Pinout & Package

Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, -40°C to +85°C operating range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5171BRMZ-10 and MCP41010-I/P, the X9317WS8IZ uniquely combines 100-tap resolution, guaranteed -40°C to +85°C nonvolatile recall, and minimal 3-wire control - eliminating both I²C address conflicts and post-boot MCU dependency in safety-critical or unattended systems.

Availability

X9317WS8IZ is available at Aetrix Electronics and suitable for industrial power supplies, laser diode bias control, and precision sensor signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for X9317WS8IZ 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 delivering high-performance microcontrollers, analog, and power solutions for automotive, industrial, and infrastructure markets.

The X9317 series is part of Renesas' XDCP™ digitally controlled potentiometer product line, designed specifically for replacing mechanical trimmers in industrial and telecom equipment where reliability, temperature stability, and autonomous power-up behavior are mandatory.

FAQ

What is the guaranteed operating temperature range for the X9317WS8IZ?

The X9317WS8IZ is rated for continuous operation from -40°C to +85°C. This industrial-grade specification is confirmed in the Ordering Information table on page 2 of FN8183 Rev.10.01, where X9317WS8IZ is explicitly listed with "-40 to +85°C" under Temperature Range. All electrical parameters in the Potentiometer and DC Electrical Specifications sections apply across this full range.

Does the X9317WS8IZ retain its wiper position after power cycling?

Yes, the X9317WS8IZ stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. This behavior is documented in the device overview ("wiper position stored in nonvolatile memory and recalled on power-up"), block diagram (7-bit nonvolatile memory with STORE AND RECALL), and Principles of Operation section, which states: "When power is restored, the contents of the memory are recalled and the wiper is set to the value last stored."

What package type and footprint does the X9317WS8IZ use?

The X9317WS8IZ uses an 8-lead narrow-body SOIC package per JEDEC MS-012, designated M8.15E in Renesas documentation. Pin configuration matches standard SOIC-8 layout with pin 1 identifier marked, and land pattern dimensions are provided on page 13 of FN8183 Rev.10.01. It is RoHS-compliant and Pb-free.

How many wiper positions does the X9317WS8IZ support, and what is its resolution?

The X9317WS8IZ supports exactly 100 wiper tap points, corresponding to 99 resistive elements. Resolution is 1% of full-scale (1/99 ≈ 1.01%), as defined by the minimum increment (MI) = [V(RH)−V(RL)]/99. This is specified in the Potentiometer Specifications table (Resolution = 1%) and confirmed in Figure 1's block diagram showing "100 wiper tap points".

What is the supply voltage range and power consumption of the X9317WS8IZ?

The X9317WS8IZ operates from 2.7V to 5.5V, as stated in the Potentiometer Specifications table under "VCC Supply Voltage" for the X9317-2.7 variant. Active current is ≤80µA (ICC1), and standby current is ≤5µA (ISB), both measured at VCC = 5V ±10%. These values are verified across the full -40°C to +85°C temperature range per the datasheet's boldface limits.