Renesas X9408WV24I-2.7

Overview

X9408WV24I-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 64-tap resolution per channel, 2-wire I²C-compatible interface, 10kΩ end-to-end resistance, and operation from 2.7V to 5.5V. It integrates four independent volatile wiper counter registers and nonvolatile data registers for persistent wiper position storage, used in precision analog trimming, sensor calibration, and programmable gain control circuits.

For engineers reviewing the X9408WV24I-2.7 datasheet, X9408WV24I-2.7 pinout, X9408WV24I-2.7 application, or X9408WV24I-2.7 equivalent, key selection criteria include its dual-supply analog section (±2.7V to ±5.5V), hardware write-protect (WP) input, TSSOP-24 package, and guaranteed 100-year data retention across four nonvolatile registers per potentiometer.

Technical Context

The X9408WV24I-2.7 implements four independent resistor arrays-each with 63 discrete segments and 64 tap points-controlled via decoded 6-bit wiper counter registers (WCR). Each WCR drives CMOS switches selecting a single wiper output (VW/RW) between VH/RH and VL/RL terminals, enabling true three-terminal potentiometer or two-terminal variable resistor operation.

Communication occurs over a bidirectional 2-wire bus (SCL/SDA) compliant with standard I²C timing at up to 400kHz. Device addressing uses A0–A3 inputs to set the LSBs of an 8-bit slave address (0101xxxx), supporting up to 16 devices on one bus. Nonvolatile writes to data registers require high-voltage cycle timing (5–10ms) and are protected by the WP pin.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4mm width), RoHS-compliant, Pb-free matte tin termination.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5204BRUZ10 and MCP42010-I/SL, the X9408WV24I-2.7 uniquely supports true bipolar analog operation (±2.7V to ±5.5V), hardware write protection, and I²C compatibility in the same 24-TSSOP footprint-making it the only option for robust, field-reprogrammable analog trimming in mixed-signal industrial and medical systems.

Availability

X9408WV24I-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical instrument tuning, programmable power supply feedback, and audio signal level control requiring stable component supply across extended temperature ranges.

Supply support for X9408WV24I-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 precision analog, power management, and interface ICs for industrial, aerospace, and medical applications.

The X9408 family was designed for high-reliability analog trimming in systems requiring nonvolatile calibration storage, low-power operation, and robust digital interface-targeting applications where mechanical potentiometers fail due to wear, contamination, or recalibration complexity.

FAQ

What is the operating temperature range for the X9408WV24I-2.7?

The X9408WV24I-2.7 is rated for industrial temperature operation from −40°C to +85°C. This rating is confirmed in the Ordering Information table on page 2 of FN8191 Rev.4.00, where "X9408WV24I-2.7" explicitly lists "−40 to +85" under TEMP RANGE. The device meets this specification with full functionality across V_CC, V+, and V− supply ranges.

Does the X9408WV24I-2.7 support true bipolar analog operation?

Yes, the X9408WV24I-2.7 supports true bipolar analog operation: V+ can be set from +2.7V to +5.5V and V− from −2.7V to −5.5V, enabling wiper output swing across the full range. This is specified in the Absolute Maximum Ratings table (page 11) and Analog Specifications (page 11), where V_V+ and V_V− limits for "X9408-2.7" are explicitly defined as ±2.7V to ±5.5V.

How many nonvolatile data registers does the X9408WV24I-2.7 provide per potentiometer?

The X9408WV24I-2.7 provides four nonvolatile data registers (DR0–DR3) for each of its four potentiometers-16 registers total. As stated in the Description (page 1) and Register Descriptions (page 8), each register is 6-bit and retains data for 100 years. DR0 is automatically loaded into the wiper counter register (WCR) at power-up.

What is the maximum clock frequency supported by the 2-wire interface of the X9408WV24I-2.7?

The X9408WV24I-2.7 supports a maximum I²C-compatible clock frequency of 400kHz, as specified in the AC Timing table (page 14) under "f_SCL Clock frequency". This allows high-speed configuration updates while maintaining compatibility with standard microcontroller I²C peripherals without requiring custom timing firmware.

Is hardware write protection available on the X9408WV24I-2.7?

Yes, the X9408WV24I-2.7 includes a dedicated hardware write-protect (WP) input pin. When WP is driven low, nonvolatile writes to data registers are disabled-preventing accidental overwrites during normal operation. This function is documented in the Pin Descriptions (page 3) and Principles of Operation (page 4) sections of FN8191 Rev.4.00.