Renesas X9315TS-2.7

Overview

X9315TS-2.7 from Intersil is a digitally controlled potentiometer (XDCP™) implementing a 31-element resistor array with 32 discrete wiper tap positions, nonvolatile wiper position storage, and 2.7V–5.5V single-supply operation. It functions as a three-terminal voltage divider or two-terminal variable resistor in analog signal conditioning circuits requiring stable, repeatable resistance trimming under low-power constraints.

For engineers reviewing the X9315TS-2.7 datasheet, X9315TS-2.7 pinout, X9315TS-2.7 application, or X9315TS-2.7 equivalent, key selection criteria include its 10kΩ end-to-end resistance tolerance (±20%), 5µA standby current, 3-wire serial interface timing (tIW = 1–5µs), and SOIC-8 Pb-free RoHS-compliant packaging for industrial temperature range (-40°C to +85°C) operation.

Technical Context

The X9315TS-2.7 integrates a 5-bit up/down counter, nonvolatile EEPROM memory for wiper position retention, and a decoder-driven switching network across 31 precision resistive elements. Wiper movement is controlled via CS, U/D, and edge-triggered INC inputs, with make-before-break switching ensuring continuity during tap transitions.

It operates in two primary modes: real-time wiper adjustment (CS low, INC toggled with U/D set) and nonvolatile store (CS rising edge while INC high). Power-up automatically recalls the last stored wiper position, enabling deterministic startup behavior without host initialization overhead.

Key Specifications

Pinout & Package

Package: 8-lead SOIC (Pb-free, RoHS compliant), JEDEC MS-012-AA footprint (M8.15 drawing), body dimensions 4.90mm × 3.90mm × 1.75mm max.

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 X9315TS-2.7 uniquely combines 3-wire simplicity, guaranteed nonvolatile recall, and industrial temperature support in a cost-optimized SOIC-8 package-making it optimal for fixed-trim, maintenance-free analog systems.

Availability

X9315TS-2.7 is available at Aetrix Electronics and suitable for laser diode bias control, audio volume adjustment, sensor signal conditioning, and power supply trim requiring stable component supply, long-term calibration retention, and industrial-grade thermal reliability.

Supply support for X9315TS-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

Intersil Corporation (now part of Renesas Electronics) designs high-performance analog and mixed-signal ICs for precision power management, signal conditioning, and interface applications.

The X9315 family was engineered as a solid-state replacement for mechanical potentiometers in industrial and communications equipment where reliability, programmability, and nonvolatile setting retention are critical.

FAQ

What is the maximum wiper current rating for the X9315TS-2.7?

The X9315TS-2.7 has a maximum wiper current rating of ±3.75mA under recommended operating conditions. This limit ensures safe operation without exceeding the 10mW maximum power rating or inducing excessive self-heating that could degrade resistance stability or long-term reliability. Exceeding this current may cause irreversible damage to the internal switching network or resistor elements.

Does the X9315TS-2.7 retain its wiper position after power cycling?

Yes, the X9315TS-2.7 retains its wiper position after power cycling. Its nonvolatile EEPROM stores the last wiper setting with 100-year data retention and supports 100,000 write cycles. Upon power-up, the device automatically recalls the stored value and configures the wiper accordingly-no host intervention is required for deterministic startup behavior.

Can the X9315TS-2.7 operate from a 3.3V supply?

Yes, the X9315TS-2.7 operates from 2.7V to 5.5V, making it fully compatible with standard 3.3V logic and power domains. At 3.3V, its active current remains within specification (≤80µA), wiper resistance is approximately 500–800Ω, and all timing parameters-including tIW (1–5µs) and tCYC (4µs)-are maintained per datasheet limits.

What is the absolute linearity error specification for the X9315TS-2.7?

The X9315TS-2.7 has an absolute linearity error of ±1 minimum increment (MI), where MI = RTOTAL/31 ≈ 322Ω for the 10kΩ version. This means the actual wiper voltage deviates by no more than ±1 step from the ideal linear interpolation between RH/VH and RL/VL across all 32 tap positions, ensuring predictable analog transfer characteristics.

Is the X9315TS-2.7 RoHS compliant and lead-free?

Yes, the X9315TS-2.7 is RoHS compliant and features a 100% matte tin (e3) termination finish on its SOIC-8 package. It meets IPC/JEDEC J-STD-020 reflow requirements for Pb-free soldering and is qualified for both SnPb and Pb-free assembly processes without modification.