Renesas X9317TS8Z-2.7

Overview

X9317TS8Z-2.7 from Renesas Electronics is a digitally controlled potentiometer (XDCP™) with 100 wiper tap points, nonvolatile wiper position storage, and 2.7V–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 X9317TS8Z-2.7 datasheet, X9317TS8Z-2.7 pinout, X9317TS8Z-2.7 application, or X9317TS8Z-2.7 equivalent, this device supports low-voltage bias control, gain/offset trim, and laser diode regulation where nonvolatile setting retention and sub-1µs wiper settling are critical design requirements.

Technical Context

The X9317TS8Z-2.7 uses a 7-bit up/down counter decoded to select one of 100 wiper positions across a 99-resistor ladder. Its "make-before-break" switching ensures glitch-free transitions, and wiper position is stored in nonvolatile memory upon CS↑ with INC↑ - enabling automatic power-up recall.

It operates with a 3-wire serial interface (CS, U/D, INC), requires no external clock, and supports full-range operation from 2.7V to 5.5V. Absolute linearity is ±1 MI (minimum increment), relative linearity is ±0.2 MI, and ratiometric temperature coefficient is ±20 ppm/°C - ensuring stable voltage division over temperature.

Key Specifications

Pinout & Package

Package: 8-lead TSSOP (RoHS-compliant, JEDEC MO-153 AC, M8.173 drawing), 4.4mm × 3.0mm body, 0.65mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5243BRMZ10 and MCP41010-I/P, the X9317TS8Z-2.7 offers deterministic 3-wire timing, guaranteed sub-5µs wiper settling, and optimized low-voltage performance below 3V - making it preferable for cost-sensitive, single-channel analog trim in space-constrained TSSOP layouts.

Availability

X9317TS8Z-2.7 is available at Aetrix Electronics and suitable for LCD bias control, laser diode bias regulation, voltage regulator output trim, and precision DC offset adjustment requiring stable component supply, long-term calibration integrity, and RoHS-compliant packaging.

Supply support for X9317TS8Z-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 power, and mixed-signal solutions for automotive, industrial, and infrastructure markets.

The X9317 family was designed for precision analog trimming in resource-constrained systems, emphasizing nonvolatile setting retention, low-voltage operation, and robustness in extended-temperature industrial environments.

FAQ

What is the minimum supply voltage required for full functionality of the X9317TS8Z-2.7?

The X9317TS8Z-2.7 operates fully across 2.7V to 5.5V. At 2.7V, all specifications-including wiper resistance (≤400Ω), standby current (<5µA), and 100-tap resolution-remain valid per the datasheet. No derating or reduced functionality applies at the lower limit, enabling direct use in 3.3V and single-cell Li-ion systems.

How does the X9317TS8Z-2.7 store and recall wiper position without external memory?

The X9317TS8Z-2.7 integrates on-chip nonvolatile memory that stores the 7-bit wiper counter value. A store operation is triggered by raising CS while INC is held HIGH; the value is retained for 100 years. On power-up, the device automatically loads this stored value into the counter, positioning the wiper without host intervention or firmware overhead.

Can the X9317TS8Z-2.7 be used in a two-terminal variable resistor configuration?

Yes - the X9317TS8Z-2.7 supports two-terminal operation by connecting RH and RW (or RL and RW) externally and leaving the third terminal unconnected. In this mode, it functions as a digitally adjustable resistor with 10kΩ end-to-end resistance, ±20% tolerance, and ≤400Ω wiper resistance at 2.7V - ideal for current-setting and gain control.

What is the maximum allowable voltage across RH and RL terminals of the X9317TS8Z-2.7?

The absolute maximum voltage between RH and RL is +6V, as specified in the Absolute Maximum Ratings table. However, for reliable long-term operation within datasheet limits, the applied voltage should not exceed VCC (2.7V–5.5V) and must remain within the common-mode range defined by VSS and VCC to avoid exceeding internal junction ratings or degrading linearity.

Does the X9317TS8Z-2.7 support daisy-chaining multiple devices on a single 3-wire bus?

No - the X9317TS8Z-2.7 lacks a chip address or daisy-chain capability. Each device requires its own dedicated CS line for selection. Multiple units can share INC and U/D lines, but individual CS control is mandatory for independent wiper positioning or nonvolatile store operations.