Renesas X9259UV24Z

Overview

X9259UV24Z from Intersil (now Renesas) is a quad digitally controlled potentiometer (XDCP™) IC with 256-tap resolution, 2-wire serial interface, 50kΩ end-to-end resistance per channel, and 2.7V to 5.5V single-supply operation. It integrates four independent DCPs for precision analog trimming in voltage amplifier gain control, sensor signal conditioning, and DC bias adjustment.

For engineers reviewing the X9259UV24Z datasheet, X9259UV24Z pinout, X9259UV24Z application, or X9259UV24Z equivalent, this device supports volatile wiper position control via WCR registers, nonvolatile storage across four data registers per channel, hardware write protection, and TSSOP-24 packaging optimized for space-constrained industrial and consumer PCB layouts.

Technical Context

The X9259UV24Z implements four independent CMOS-switched resistor arrays, each with 256 discrete taps and an 8-bit volatile Wiper Counter Register (WCR) controlling wiper position. Each channel features four nonvolatile Data Registers (DR00–DR03, DR10–DR13, etc.) for persistent storage of up to four distinct wiper settings per potentiometer.

It operates exclusively as a 2-wire bus slave device with SDA/SCL interface, addressable via A0–A3 pins (allowing up to 16 devices on one bus), and includes hardware write protection (WP pin active-low) to prevent unintended nonvolatile register writes during system operation.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (RoHS compliant, M24.173 drawing), 4.4mm × 7.8mm 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 AD5204BRUZ10 and MCP42050-I/SL, the X9259UV24Z uniquely combines quad-channel 50kΩ DCPs, I²C compatibility, hardware write protection, and four nonvolatile data registers per channel-making it optimal for systems requiring field-updatable calibration with robust data integrity.

Availability

X9259UV24Z is available at Aetrix Electronics and suitable for industrial sensor calibration, audio equipment manufacturing, and RF power amplifier design requiring stable component supply and long-term calibration retention.

Supply support for X9259UV24Z 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 X9259 product line delivers digitally programmable analog trimming for precision calibration in sensor interfaces, power management, and signal conditioning systems - designed to replace mechanical potentiometers with enhanced reliability and programmability.

FAQ

What is the operating voltage range for the X9259UV24Z?

The X9259UV24Z operates from 2.7V to 5.5V, making it compatible with both 3.3V and 5V logic systems. This wide supply range allows direct integration into mixed-voltage designs without level shifters. The device maintains full functionality-including 256-tap resolution, nonvolatile register access, and hardware write protection-across the entire voltage window. Its low 5µA standby current further enhances suitability for battery-powered applications.

How many independent potentiometers does the X9259UV24Z integrate?

The X9259UV24Z integrates four completely independent digitally controlled potentiometers (DCPs) on a single monolithic CMOS die. Each DCP has its own RH, RL, and RW terminals, plus dedicated volatile Wiper Counter Registers (WCR0–WCR3) and four nonvolatile Data Registers (DR#0–DR#3). This architecture enables simultaneous, isolated analog trimming across multiple signal paths-such as gain, offset, bias, and reference-without crosstalk or shared resource contention.

Does the X9259UV24Z support nonvolatile storage of wiper positions?

Yes, the X9259UV24Z supports nonvolatile storage of wiper positions via four 8-bit Data Registers per channel (e.g., DR00–DR03 for DCP0). These registers retain values for 100 years and withstand 100,000 write cycles. At power-up, each channel loads DR#0 into its corresponding WCR, ensuring repeatable startup behavior. Nonvolatile writes require a high-voltage cycle (tWR = 5–10ms) and are disabled when the WP pin is held low.

What interface protocol does the X9259UV24Z use?

The X9259UV24Z uses a standard 2-wire (I²C-compatible) serial interface with SDA and SCL pins. It operates strictly as a slave device with a fixed 4-bit device type identifier (0101) and user-configurable 4-bit address (A0–A3), supporting up to 16 devices on one bus. All instructions-including Read/Write WCR, Read/Write DR, and XFR operations-are executed using 2- or 3-byte sequences with ACK/NACK handshaking, fully compliant with I²C timing specifications up to 400kHz.

What is the resolution and end-to-end resistance of each potentiometer in the X9259UV24Z?

Each of the four potentiometers in the X9259UV24Z provides 256 discrete taps (8-bit resolution) with 0.4% step resolution and a nominal end-to-end resistance (RTOTAL) of 50kΩ ±20%. The wiper resistance is 300Ω typical at 3V and 220Ω at 5V. This combination enables precise analog control in high-impedance circuits while maintaining low insertion error and predictable voltage division ratios across temperature and supply variations.