Renesas X9409WV24Z-2.7

Overview

X9409WV24Z-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP) IC implementing four 64-tap resistor arrays with volatile wiper counter registers and four nonvolatile data registers per channel. It operates from 2.7V to 5.5V, features 10kΩ end-to-end resistance, 50Ω typical wiper resistance at 5V, and supports 2-wire serial interface for wiper position control and register transfer in analog signal conditioning circuits.

For engineers reviewing the X9409WV24Z-2.7 datasheet, X9409WV24Z-2.7 pinout, X9409WV24Z-2.7 application, or X9409WV24Z-2.7 equivalent, this device serves as a programmable voltage divider or variable resistor in precision calibration, gain/offset adjustment, and filter tuning - requiring confirmation of TSSOP-24 package compatibility, 2.7V minimum supply, and hardware write protection (WP) logic level behavior.

Technical Context

The X9409WV24Z-2.7 integrates four independent CMOS resistor arrays, each with 63 series segments and 64 tap points controlled by a 6-bit wiper counter register (WCR). Each array connects to dedicated VH/RH, VL/RL, and VW/RW terminals, enabling three-terminal potentiometer or two-terminal rheostat configurations.

It uses a standard 2-wire (I²C-compatible) interface with SCL/SDA, four address inputs (A0–A3), and hardware write-protect (WP) to enable nonvolatile DR writes only when WP is high. Power-up automatically loads DR0 into each WCR, ensuring repeatable startup wiper positions without host initialization.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4mm width), RoHS-compliant, Pb-free matte tin finish. Thermal resistance θ_JA = 71°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9409WV24Z-2.7, AD5204BRUZ10 offers SPI simplicity but sacrifices nonvolatile storage and automatic power-up recall, while MCP42010-I/SL provides nonvolatility in a smaller dual-channel format but lacks hardware write protection and quad integration - making X9409WV24Z-2.7 uniquely suited for robust, self-contained quad calibration in industrial analog systems.

Availability

X9409WV24Z-2.7 is available at Aetrix Electronics and suitable for precision analog calibration, programmable gain control, and DC offset adjustment requiring stable component supply and long-term parameter retention.

Supply support for X9409WV24Z-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 (now part of Renesas Electronics) is a semiconductor company specializing in high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.

The X9409 product line delivers digitally programmable analog components for replacing mechanical potentiometers in calibration-critical systems, emphasizing nonvolatile storage, low noise, and industrial-grade reliability.

FAQ

What is the operating voltage range for the X9409WV24Z-2.7?

The X9409WV24Z-2.7 operates from 2.7V to 5.5V. Its guaranteed functionality at 2.7V makes it compatible with modern 3.3V systems without level translation. The device draws <3µA in standby and supports full 2-wire interface operation across this range, with wiper resistance and linearity specifications validated down to the 2.7V minimum.

Does the X9409WV24Z-2.7 retain wiper settings after power loss?

Yes - the X9409WV24Z-2.7 retains wiper positions in nonvolatile Data Registers (DR0–DR3), with 100-year data retention and 100,000 write cycles per bit. On power-up, DR0 contents are automatically loaded into each wiper counter register, ensuring repeatable startup behavior without host initialization.

How many independent potentiometers does the X9409WV24Z-2.7 contain?

The X9409WV24Z-2.7 integrates four fully independent digitally controlled potentiometers. Each has its own 64-tap resistor array, dedicated VH/RH, VL/RL, and VW/RW terminals, plus four nonvolatile data registers and one volatile wiper counter register - enabling simultaneous, isolated analog adjustments.

What interface protocol does the X9409WV24Z-2.7 use?

The X9409WV24Z-2.7 uses a standard 2-wire serial interface compatible with I²C Fast Mode (up to 400kHz). It supports read/write access to wiper counters and data registers, global transfers, and increment/decrement commands - all using SDA and SCL pins with open-drain outputs requiring external pull-up resistors.

Is hardware write protection available on the X9409WV24Z-2.7?

Yes - the X9409WV24Z-2.7 includes a dedicated WP (Write Protect) pin (Pin 24). When pulled low, it disables all nonvolatile writes to the Data Registers, preventing accidental overwrites of calibrated values. This hardware-level protection operates independently of software commands.