Renesas X9259TS24I-2.7T1

Overview

X9259TS24I-2.7T1 from Renesas (formerly Intersil) is a quad digitally controlled potentiometer (XDCP™) IC implementing four independent 256-tap, 50kΩ end-to-end resistive elements with volatile wiper counter registers and nonvolatile data registers. It operates from 2.7V to 5.5V, features 2-wire serial interface, <5µA standby current, and supports programmable gain control, DC bias trimming, and sensor signal conditioning in industrial and embedded systems.

For engineers reviewing the X9259TS24I-2.7T1 datasheet, X9259TS24I-2.7T1 pinout, X9259TS24I-2.7T1 application, or X9259TS24I-2.7T1 equivalent, key selection criteria include its quad-channel 256-tap resolution, 2.7–5.5V supply range, 24-pin SOIC package, hardware write-protect (WP) pin, and support for both volatile wiper adjustment and nonvolatile storage of up to four wiper positions per channel.

Technical Context

The X9259TS24I-2.7T1 integrates four monolithic CMOS digitally controlled potentiometers, each with RH/RL/RW terminals and an 8-bit volatile Wiper Counter Register (WCR) controlling wiper position across 256 taps. Each channel includes four 8-bit nonvolatile Data Registers (DR00–DR03, etc.) for persistent storage of wiper settings, with automatic DR#0→WCR load at power-up.

It uses a standard 2-wire (I²C-compatible) bus with SDA/SCL, device address pins A0–A3 (4-bit slave address), and active-low hardware write-protect (WP). All nonvolatile writes require high-voltage timing (tWR = 5–10 ms), while volatile wiper updates occur instantly via Write WCR or Increment/Decrement commands.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (Small Outline Integrated Circuit), RoHS-compliant, body width 7.5 mm, standard JEDEC MS-013AC footprint (PKG DWG # M24.3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP42010-I/P, the X9259TS24I-2.7T1 provides higher integration (four channels), wider supply range (2.7–5.5V), built-in nonvolatile storage per channel, and hardware write protection-making it optimal for compact, self-calibrating industrial control and sensor modules requiring robust field-programmable analog tuning.

Availability

X9259TS24I-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, embedded power management, and audio system design requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for X9259TS24I-2.7T1 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 Corporation (formerly Intersil) is a global semiconductor leader specializing in microcontrollers, analog power, and mixed-signal solutions for industrial, automotive, and infrastructure markets.

The X9259 product line delivers digitally programmable analog front-ends for precision calibration and adaptive biasing, targeting applications where mechanical potentiometers fail due to wear, vibration, or environmental stress.

FAQ

What is the operating temperature range for the X9259TS24I-2.7T1?

The X9259TS24I-2.7T1 is rated for industrial temperature operation from –40°C to +85°C. This range is confirmed in the Ordering Information table (page 2 of FN8169 Rev 6.00), where the "I" suffix denotes industrial grade, and the "-2.7" variant specifies the extended 2.7–5.5V supply range. The device maintains full electrical specifications-including 256-tap resolution, 50kΩ RTOTAL, and nonvolatile data retention-across this range.

Does the X9259TS24I-2.7T1 support true I²C bus compliance?

The X9259TS24I-2.7T1 implements a 2-wire serial interface compatible with I²C protocol conventions-including START/STOP conditions, ACK/NACK signaling, and 7-bit addressing-but does not assert full I²C specification compliance (e.g., no clock stretching or multi-master arbitration). Its SDA is open-drain with required external pull-up, and SCL accepts up to 400 kHz clock frequency. It functions reliably as a slave device on standard I²C buses used in microcontroller-based systems.

How many nonvolatile wiper positions can be stored per channel in the X9259TS24I-2.7T1?

The X9259TS24I-2.7T1 provides four independent 8-bit nonvolatile Data Registers (DR00, DR01, DR02, DR03) for each of its four DCP channels. This allows storage of up to four distinct wiper positions per channel-enabling configurations such as factory default, user calibration, high-temp offset, and low-temp offset-all retained for 100 years without power.

What is the maximum wiper current rating for the X9259TS24I-2.7T1?

The absolute maximum wiper current for the X9259TS24I-2.7T1 is ±3 mA, as specified in the Recommended Operating Conditions table (page 12 of FN8169 Rev 6.00). Exceeding this limit risks permanent damage to the CMOS switch array. For safe operation, ensure that voltage across any RH–RW or RW–RL segment remains within the ±3 mA limit-e.g., with 50kΩ RTOTAL, maximum applied voltage differential across a segment is ~150 mV.

Can the X9259TS24I-2.7T1 be used as a three-terminal potentiometer?

Yes, the X9259TS24I-2.7T1 supports both two-terminal variable resistor and three-terminal potentiometer configurations. Each DCP channel provides dedicated RH (high), RL (low), and RW (wiper) terminals. When used as a potentiometer, RH and RL define the total resistance, and RW provides a programmable tap point-enabling voltage division, adjustable gain, or bias setting with 256-step resolution and nonvolatile recall.