Renesas X9258TS24-2.7

Overview

X9258TS24-2.7 from Intersil (now Renesas) is a quad digital potentiometer IC with 256-tap resolution per channel, dual ±2.7V to ±5.5V analog supplies (V+/V−), 2.7V–5.5V system supply (VCC), and 2-wire I²C-compatible interface. It integrates four independent 100kΩ end-to-end resistor arrays, each with volatile wiper counter registers and four nonvolatile data registers, enabling precise, programmable analog voltage division in mixed-signal control loops.

For engineers reviewing the X9258TS24-2.7 datasheet, X9258TS24-2.7 pinout, X9258TS24-2.7 application, or X9258TS24-2.7 equivalent, key selection considerations include its 100kΩ potentiometer resistance, −40°C to +85°C industrial temperature range, SOIC-24 package, hardware write-protect (WP) pin, and support for incremental/decremental wiper adjustment via SCL/SDA timing - critical for real-time calibration and adaptive biasing.

Technical Context

The X9258TS24-2.7 implements four independent resistor arrays, each composed of 255 series-connected segments with CMOS-switched wiper taps controlled by an 8-bit Wiper Counter Register (WCR). Each array supports three-terminal potentiometer or two-terminal variable resistor configurations, with VH/RH and VL/RL pins referenced to V+ and V− respectively.

Its 2-wire serial interface operates at up to 400kHz, supports slave addressing via A0–A3 inputs (allowing up to 16 devices on one bus), and includes dedicated instructions for reading/writing WCRs and DRs, transferring between them, and incrementing/decrementing wiper position synchronously with SCL edges - all while maintaining <5µA standby current.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), RoHS-compliant, Pb-free (e3 termination), MSL Level 3 per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad digital potentiometer applications.

Compared with AD5204BRUZ100 and MCP42050-I/P, the X9258TS24-2.7 uniquely supports true bipolar analog operation (±2.7V to ±5.5V), offers four independent nonvolatile channels with hardware write protection, and uses industry-standard I²C - making it optimal for industrial calibration, audio, and laser bias systems requiring robust, field-programmable analog tuning.

Availability

X9258TS24-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and laser diode bias control requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant packaging.

Supply support for X9258TS24-2.7 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 (formerly Intersil) is a global semiconductor leader specializing in analog, power, and embedded processing solutions for industrial, automotive, and communications markets.

The X9258 product line was designed for high-reliability, digitally programmable analog signal conditioning - targeting applications demanding nonvolatile calibration, bipolar operation, and multi-channel integration in space-constrained systems.

FAQ

What is the supply voltage range for X9258TS24-2.7?

The X9258TS24-2.7 supports VCC = 2.7V to 5.5V, V+ = +2.7V to +5.5V, and V− = −2.7V to −5.5V. This dual-supply capability allows true bipolar analog operation without external level shifters. The specified range is validated across the full −40°C to +85°C temperature range, and all internal logic and resistor arrays function correctly within these limits. X9258TS24-2.7 does not require strict power sequencing between VCC, V+, and V−, provided all reach final values within 1ms.

How many wiper positions does X9258TS24-2.7 support per potentiometer?

X9258TS24-2.7 provides 256 discrete wiper positions per potentiometer, implemented via 255 resistive elements and decoded 8-bit Wiper Counter Registers. This yields 0.4% resolution per step and ±1 LSB absolute linearity error. The wiper position is volatile but can be loaded from any of four nonvolatile Data Registers (DR0–DR3) or recalled from DR0 at power-up. X9258TS24-2.7 also supports real-time incremental/decremental stepping via SCL/SDA timing.

Does X9258TS24-2.7 include hardware write protection?

Yes, X9258TS24-2.7 features a dedicated hardware write-protect (WP) pin (Pin 16). When WP is driven LOW, all nonvolatile writes to the Data Registers (DR0–DR3) are disabled - preventing accidental or unauthorized changes to stored calibration values. This function operates independently of the I²C interface state and remains active even during communication. WP has no effect on volatile WCR writes or read operations. X9258TS24-2.7 retains this protection across power cycles.

What package type is used for X9258TS24-2.7?

X9258TS24-2.7 is supplied in a 24-lead SOIC (300 mil) package, designated M24.3 in Intersil/Renesas documentation. It is RoHS-compliant and Pb-free, with 100% matte tin (e3) termination suitable for both SnPb and Pb-free soldering processes. The package has thermal resistance θJA = 46°C/W and θJC = 21°C/W, and is rated MSL Level 3 per JEDEC J-STD-020. X9258TS24-2.7 shares footprint compatibility with other X9258 variants in SOIC-24.

Can X9258TS24-2.7 operate with unipolar analog supplies?

Yes, X9258TS24-2.7 can operate with unipolar analog supplies - for example, V+ = +5V and V− = 0V (GND) - enabling use as a standard 0–5V programmable divider. In this configuration, VL/RL pins connect to GND and VH/RH to +5V, while VW/RW delivers 0–5V output. The device maintains full 256-tap resolution and nonvolatile storage functionality. X9258TS24-2.7's specification explicitly covers V− = 0V operation, and all analog performance parameters (e.g., wiper resistance, noise) are guaranteed under unipolar conditions.