Renesas X9259TV24

Overview

X9259TV24 from Intersil (now Renesas) is a quad digitally controlled potentiometer (XDCP™) IC integrating four independent 256-tap, 50kΩ end-to-end resistance DCPs on a single CMOS die. It operates from 2.7V to 5.5V, delivers 0.4% resolution, features nonvolatile data registers with 100-year retention, and supports 2-wire (I²C-compatible) interface for wiper position control - used in precision gain/offset trimming of op-amp circuits, LCD contrast adjustment, and sensor signal conditioning.

For engineers reviewing the X9259TV24 datasheet, X9259TV24 pinout, X9259TV24 application, or X9259TV24 equivalent, this page provides verified functional identity, validated 24-pin TSSOP package mapping, confirmed 2-wire bus timing compliance (400kHz), exact wiper resistance (220Ω typ @5V), and real-world circuit-level use cases including voltage regulator output setting and Wheatstone bridge trimming.

Technical Context

The X9259TV24 implements four independent digital potentiometers using resistor ladders and CMOS switches, each with an 8-bit volatile Wiper Counter Register (WCR) and four 8-bit nonvolatile Data Registers (DR0–DR3). Wiper position is set via serial write, parallel transfer from DR, or real-time increment/decrement commands over the 2-wire bus.

It uses hardware address pins A0–A3 to support up to 16 devices on one bus, includes active-low WP pin for nonvolatile write protection, and powers up by loading DR#0 into each WCR. Standby current is <5µA, and wiper resistance is 220Ω typical at VCC = 5V with ±3mA max wiper current handling.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (RoHS-compliant, M24.173 drawing), body width 4.4mm, lead pitch 0.65mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP42050-I/SL, the X9259TV24 uniquely delivers four independent 50kΩ DCPs with nonvolatile DR storage, hardware write protection, and native 2-wire compatibility - making it optimal for space-constrained, self-contained calibration subsystems requiring persistent multi-point trimming.

Availability

X9259TV24 is available at Aetrix Electronics and suitable for LCD contrast adjustment, sensor offset trimming, and voltage regulator output programming requiring stable component supply and long-term calibration integrity.

Supply support for X9259TV24 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, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The X9259TV24 belongs to Renesas' XDCP™ (Digitally Controlled Potentiometer) product line, designed specifically for replacing mechanical trimmers in precision analog calibration, feedback control, and sensor interface applications.

FAQ

What is the package type and pin count of the X9259TV24?

The X9259TV24 is packaged in a 24-lead TSSOP (Thin Shrink Small Outline Package) with RoHS-compliant lead finish and JEDEC-standard M24.173 footprint. It contains four independent digitally controlled potentiometers, address pins A0–A3, 2-wire interface signals (SDA/SCL), hardware write protect (WP), power (VCC/VSS), and 12 dedicated potentiometer terminals (RH/RL/RW × 4).

Does the X9259TV24 support true I²C communication?

Yes, the X9259TV24 implements a fully compatible 2-wire serial interface meeting I²C Fast Mode timing requirements (400kHz max clock frequency, tHIGH ≥600ns, tLOW ≥1300ns). It responds to standard 7-bit slave addresses formed by A0–A3, supports START/STOP conditions, ACK/NACK handshaking, and operates as a slave device - enabling seamless integration into existing I²C-based microcontroller systems.

How does nonvolatile storage work in the X9259TV24?

The X9259TV24 includes four 8-bit nonvolatile Data Registers (DR0–DR3) per DCP, each retaining wiper position data for 100 years with 100,000 write cycles. At power-up, the device automatically loads DR#0 into the corresponding volatile Wiper Counter Register (WCR). Nonvolatile writes require 5–10ms and are blocked when the WP pin is held LOW.

Can the X9259TV24 be used as a 2-terminal variable resistor?

Yes, each of the four DCPs in the X9259TV24 can operate as either a 3-terminal potentiometer (using RH, RL, and RW) or a 2-terminal variable resistor (by connecting RH to RW or RL to RW). The 50kΩ end-to-end resistance and 220Ω typical wiper resistance define its usable range and loading behavior in rheostat mode.

What is the maximum wiper current rating for the X9259TV24?

The X9259TV24 specifies a maximum wiper current of ±3mA per DCP. Exceeding this limit risks degradation of wiper resistance stability and long-term reliability. This rating applies under recommended operating conditions (VCC = 2.7V–5.5V) and defines safe operating boundaries when used in voltage divider, gain-setting, or biasing configurations.