Renesas X9317TP-2.7

Overview

X9317TP-2.7 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) implementing a 99-element resistor array with 100 wiper tap positions, nonvolatile wiper position storage, and 3-wire up/down serial interface. It operates from 2.7V to 5.5V, delivers ±20% end-to-end resistance tolerance, and supports voltage divider or variable resistor configurations in precision analog trimming applications.

For engineers reviewing the X9317TP-2.7 datasheet, X9317TP-2.7 pinout, X9317TP-2.7 application, or X9317TP-2.7 equivalent, this device serves as a solid-state replacement for mechanical potentiometers where power-up repeatability, low standby current (<5 µA), and temperature-compensated linearity (±0.2 MI relative linearity) are critical in embedded bias control circuits.

Technical Context

The X9317TP-2.7 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 discrete taps. Its "make-before-break" switching ensures glitch-free transitions during wiper movement, while the resistor array exhibits ratiometric temperature coefficient of ±20 ppm/°C - critical for stable voltage division under thermal drift.

Control logic responds to CS (chip select), U/D (direction), and edge-triggered INC inputs. Wiper position is stored in nonvolatile memory only when CS rises while INC is HIGH, enabling deterministic power-up behavior without external configuration. The device supports both three-terminal potentiometer (RH–RW–RL) and two-terminal variable resistor (RW–RL or RW–RH) topologies.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (RoHS-compliant, M8.118 drawing, 3.0 mm × 3.0 mm footprint). Thermal resistance θ_JA = 145 °C/W enables operation in compact, thermally constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5170BRMZ-10 and MCP41HV51-103, the X9317TP-2.7 uniquely combines 100-tap resolution, automatic nonvolatile recall, and 3-wire simplicity - making it optimal for cost-sensitive, self-initializing analog trim in space-constrained industrial and consumer electronics.

Availability

X9317TP-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, long-term calibration retention, and RoHS-compliant packaging.

Supply support for X9317TP-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 connectivity solutions for automotive, industrial, and IoT applications.

The X9317TP-2.7 belongs to Renesas' XDCP™ (Digitally Controlled Potentiometer) family, designed specifically for replacing mechanical trimmers in precision analog signal conditioning, power supply feedback, and optical bias circuits where reliability, repeatability, and zero-maintenance operation are essential.

FAQ

What is the supply voltage range supported by the X9317TP-2.7?

The X9317TP-2.7 operates from 2.7 V to 5.5 V, making it compatible with both 3.3 V and 5 V logic systems. This wide VCC range allows direct integration into mixed-voltage designs without external level shifters or regulators. The device maintains full functionality-including wiper movement, nonvolatile store, and low standby current-across this entire range, as verified in the FN8183 Rev.10.01 datasheet.

Does the X9317TP-2.7 retain its wiper position after power cycling?

Yes, the X9317TP-2.7 stores the wiper position in nonvolatile memory and automatically recalls it upon power-up. This behavior is guaranteed by design: once the wiper position is stored (via CS rising while INC is HIGH), it persists for up to 100 years and restores within 5 µs after VCC stabilizes. No external controller or firmware is needed to reinitialize the X9317TP-2.7.

How many wiper tap positions does the X9317TP-2.7 provide?

The X9317TP-2.7 provides exactly 100 wiper tap positions, corresponding to a 99-element resistor array. Each tap represents a discrete 1% step of the total end-to-end resistance (10 kΩ), enabling precise analog adjustment with ±0.2 MI relative linearity. This resolution is confirmed in the "Potentiometer Specifications" table on page 4 of the FN8183 datasheet.

What package type is used for the X9317TP-2.7?

The X9317TP-2.7 is packaged in an 8-lead MSOP (Mini Small Outline Plastic Package), per JEDEC MO-187-AA, with package drawing M8.118. Its dimensions are 3.0 mm × 3.0 mm × 1.10 mm max height, and it features RoHS-compliant matte tin plating. This compact, surface-mount package supports high-density PCB layouts and offers θ_JA = 145 °C/W for thermal management.

Can the X9317TP-2.7 be used as a two-terminal variable resistor?

Yes, the X9317TP-2.7 can be configured as a two-terminal variable resistor by connecting either RH or RL to RW (wiper), leaving the unused terminal open or grounded depending on topology. This mode is explicitly supported in the datasheet (page 1, "Applications") and used in laser diode bias and current-sense applications. Wiper resistance remains ≤400 Ω at 2.7 V, ensuring minimal insertion loss.