Renesas X9317TS8I-2.7

Overview

X9317TS8I-2.7 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 2.7V to 5.5V supply operation. It implements a 99-element resistor array with temperature-compensated end-to-end resistance tolerance of ±20%, wiper resistance ≤400Ω at 2.7V, and standby current <5µA. It serves as a three-terminal voltage divider or two-terminal variable resistor in precision analog trimming applications.

For engineers reviewing the X9317TS8I-2.7 datasheet, X9317TS8I-2.7 pinout, X9317TS8I-2.7 application, or X9317TS8I-2.7 equivalent, key selection criteria include its 2.7V minimum VCC support, -40°C to +85°C industrial temperature range, MSOP-8 package, 10kΩ end-to-end resistance, and 3-wire up/down serial interface compatibility with microcontroller GPIOs.

Technical Context

The X9317TS8I-2.7 integrates a 7-bit up/down counter, decoder, and nonvolatile memory to control wiper position across 100 discrete taps. Its resistor array uses 99 matched elements with ratiometric temperature coefficient of ±20 ppm/°C and absolute linearity of ±1 MI, ensuring stable voltage division under thermal drift.

Operation relies on three dedicated digital inputs: CS (chip select), U/D (direction control), and INC (negative-edge-triggered increment). Wiper position is stored to nonvolatile memory when CS transitions high while INC is high, enabling automatic power-up recall without external configuration.

Key Specifications

Pinout & Package

Package: 8-lead MSOP (Moisture Sensitivity Level 1, RoHS-compliant, JEDEC MO-187-AA compliant, body dimensions 3.0mm × 3.0mm × 0.85mm).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5171BRMZ-10 and MCP4017T-103E/OT, the X9317TS8I-2.7 uniquely combines 100-tap resolution, guaranteed nonvolatile power-up recall, and 2.7V–5.5V operation in an MSOP-8 package - making it optimal for industrial trimming where calibration persistence and analog precision are mandatory.

Availability

X9317TS8I-2.7 is available at Aetrix Electronics and suitable for LCD bias control, laser diode biasing, voltage regulator output adjustment, and precision DC offset trimming requiring stable component supply across industrial temperature ranges.

Supply support for X9317TS8I-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 manufacturer specializing in microcontrollers, analog mixed-signal devices, and power management ICs for industrial, automotive, and infrastructure markets.

The X9317 family delivers solid-state digitally controlled potentiometers optimized for precision analog trimming in space-constrained, thermally demanding applications - emphasizing reliability, nonvolatile retention, and low-voltage operation.

FAQ

What is the operating voltage range for the X9317TS8I-2.7?

The X9317TS8I-2.7 operates from 2.7V to 5.5V, supporting single-supply battery-powered and low-voltage industrial systems. This extended lower limit enables direct use with 3.3V or 2.7V rails without level-shifting. The device maintains full functionality-including 100-tap resolution, nonvolatile store, and 10kΩ RTOTAL tolerance-across this entire range. At 2.7V, wiper resistance remains ≤400Ω and standby current stays below 5µA.

Does the X9317TS8I-2.7 retain its wiper position after power loss?

Yes, the X9317TS8I-2.7 stores the wiper position in nonvolatile memory and automatically recalls it on power-up. This occurs without external intervention or host controller action. The device guarantees 100 years of data retention and 100,000 write cycles, making it suitable for applications requiring persistent calibration-such as medical instruments or industrial sensors where recalibration after each power cycle is impractical. The X9317TS8I-2.7 achieves this using on-chip EEPROM-like memory integrated into the CMOS process.

What package type and footprint does the X9317TS8I-2.7 use?

The X9317TS8I-2.7 uses an 8-lead MSOP package (JEDEC MO-187-AA compliant) with dimensions 3.0mm × 3.0mm × 0.85mm and pitch of 0.65mm. Its land pattern matches standard MSOP-8 footprints, and it is RoHS-compliant with matte tin terminations. The package is rated MSL1, allowing unlimited floor life before reflow. Pin 1 is marked by a mold or laser identifier in the top-left corner when viewed from the top with the marking side up.

How does the 3-wire interface of the X9317TS8I-2.7 work?

The X9317TS8I-2.7 uses a simple 3-wire up/down interface: CS (chip select), U/D (up/down direction), and INC (increment). With CS low, each negative edge on INC moves the wiper one tap in the direction set by U/D. No clock or data lines are needed-only three GPIOs from a microcontroller. Storing the position to nonvolatile memory occurs when CS transitions high while INC is held high. This eliminates protocol complexity versus I²C or SPI potentiometers, reducing firmware overhead and pin count.

What is the end-to-end resistance and tolerance of the X9317TS8I-2.7?

The X9317TS8I-2.7 has a nominal end-to-end resistance (RTOTAL) of 10kΩ with a tolerance of ±20% across temperature and unit variation. This value is specified at 25°C and holds over the full -40°C to +85°C operating range due to built-in temperature compensation. The ratiometric temperature coefficient is ±20 ppm/°C, meaning the voltage division ratio remains stable even as absolute resistance drifts. This makes the X9317TS8I-2.7 suitable for precision trimming where ratio stability matters more than absolute resistance value.