Renesas X9317US8IZ-2.7

Overview

X9317US8IZ-2.7 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 50 kΩ end-to-end resistance. It operates from 2.7 V to 5.5 V, consumes <5 µA in standby, and features ±20% RTOTAL tolerance and ±300 ppm/°C total resistance temperature coefficient. It serves as a three-terminal voltage divider or two-terminal variable resistor in precision analog trimming applications.

For engineers reviewing the X9317US8IZ-2.7 datasheet, X9317US8IZ-2.7 pinout, X9317US8IZ-2.7 application, or X9317US8IZ-2.7 equivalent, key selection criteria include its 2.7–5.5 V supply range, industrial-grade –40°C to +85°C operation, SOIC-8 package, 3-wire up/down interface timing (tCYC = 2 µs), and nonvolatile store/reload capability for power-up repeatability.

Technical Context

The X9317US8IZ-2.7 implements a 99-element resistor array with make-before-break wiper switching, controlled by a 7-bit up/down counter decoded to select one of 100 tap positions. Its control logic responds to CS (chip select), U/D (direction), and edge-triggered INC (increment) signals - no clock required.

Wiper position is retained in nonvolatile memory across power cycles and recalled within 5 µs after power-up. The device supports both three-terminal potentiometer (RH–RW–RL) and two-terminal variable resistor (RW–RL or RW–RH) configurations, with ratiometric temperature coefficient of ±20 ppm/°C ensuring stable voltage division under thermal drift.

Key Specifications

Pinout & Package

Package: 8-lead narrow-body SOIC (M8.15E), RoHS-compliant, Pb-free, moisture sensitivity level per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ50 and MCP41050-I/P, the X9317US8IZ-2.7 uniquely combines 3-wire simplicity, guaranteed nonvolatile recall, and superior ratiometric temperature stability - making it optimal for industrial analog trimming where reliability and thermal robustness outweigh interface flexibility.

Availability

X9317US8IZ-2.7 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias adjustment, and voltage regulator output trimming requiring stable component supply across industrial temperature ranges and long product lifecycles.

Supply support for X9317US8IZ-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 delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and enterprise applications.

The X9317 series is part of Renesas' XDCP™ (Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical potentiometers in precision analog trimming, calibration, and bias control circuits where nonvolatility, low power, and thermal stability are essential.

FAQ

What is the supply voltage range for the X9317US8IZ-2.7?

The X9317US8IZ-2.7 operates from 2.7 V to 5.5 V, supporting both 3.3 V and 5 V systems without external regulation. This range is explicitly defined in the "Potentiometer Specifications" table on page 4 of the FN8183 datasheet and applies across the full –40°C to +85°C operating temperature range. The "-2.7" suffix denotes this extended low-voltage capability versus standard 4.5–5.5 V variants.

Does the X9317US8IZ-2.7 retain its wiper position after power loss?

Yes, the X9317US8IZ-2.7 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This behavior is confirmed in the device overview (page 1), block diagram (Figure 1), and "Principles of Operation" section (page 8). Data retention is rated for 100 years, and endurance is specified at 100,000 store cycles per bit - verified in the "Endurance and Data Retention" table on page 5.

What package type does the X9317US8IZ-2.7 use?

The X9317US8IZ-2.7 uses an 8-lead narrow-body SOIC package (JEDEC MS-012 compliant, drawing M8.15E). This is explicitly stated in the "Ordering Information" table on page 2 and confirmed in the "Pin Configurations" diagram on page 3. The package is RoHS-compliant, Pb-free, and rated for industrial temperature operation (–40°C to +85°C).

How many wiper tap points does the X9317US8IZ-2.7 provide?

The X9317US8IZ-2.7 provides exactly 100 wiper tap points, corresponding to 99 resistive elements in its linear array. This is stated in the title ("100 Taps") and confirmed in the "Features" list (page 1), block diagram (Figure 1), and "Principles of Operation" (page 8). Each tap represents a discrete resistance ratio with 1% resolution between RH and RL terminals.

What is the end-to-end resistance value and tolerance of the X9317US8IZ-2.7?

The X9317US8IZ-2.7 has a nominal end-to-end resistance (RTOTAL) of 50 kΩ with a tolerance of ±20%, as specified in the "Ordering Information" table (page 2) and "Potentiometer Specifications" table (page 4). This tolerance applies across the full operating temperature range and is measured between RH and RL terminals with RW disconnected.