Renesas X9408WV24-2.7

Overview

X9408WV24-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 64-tap resolution per channel, 2.5kΩ end-to-end resistance, 2-wire I²C-compatible interface, and operation from 2.7V to 5.5V. It integrates four independent volatile wiper counter registers and nonvolatile data registers for persistent setting storage, used in precision analog trimming and programmable gain control circuits.

For engineers reviewing the X9408WV24-2.7 datasheet, X9408WV24-2.7 pinout, X9408WV24-2.7 application, or X9408WV24-2.7 equivalent, this device supports low-noise, low-power analog adjustment in mixed-signal systems where digital calibration, multi-channel parameter tuning, and EEPROM-backed wiper position retention are required.

Technical Context

The X9408WV24-2.7 implements four independent resistor arrays-each with 63 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.

It uses a standard 2-wire bus (SCL/SDA) with slave address format 0101xxxx, supports hardware write protection (WP), and features dual analog supplies (V+, V−) enabling ±2.7V to ±5.5V operation. Power-up loads DR0 into each WCR, and nonvolatile writes require high-voltage cycle timing (tWR = 5–10 ms).

Key Specifications

Pinout & Package

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

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 X9408WV24-2.7 uniquely supports true bipolar analog operation (V+/V−), automatic DR0→WCR power-up restoration, and I²C compatibility-making it optimal for embedded systems needing robust, self-initializing analog calibration without additional firmware overhead.

Availability

X9408WV24-2.7 is available at Aetrix Electronics and suitable for audio equipment manufacturing, laser diode driver calibration, industrial sensor module production, and medical analog front-end assembly requiring stable component supply and long-term traceability.

Supply support for X9408WV24-2.7 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, communications, and computing markets.

The X9408 family was designed for digitally programmable analog signal conditioning-targeting applications demanding nonvolatile calibration, multi-channel trimming, and low-noise, low-power resistor control in space-constrained PCB layouts.

FAQ

What is the supply voltage range for the X9408WV24-2.7?

The X9408WV24-2.7 operates with VCC from 2.7V to 5.5V, and analog supplies V+ and V− from ±2.7V to ±5.5V. This dual-rail analog architecture allows true bipolar operation, unlike single-supply digital potentiometers. The "-2.7" suffix explicitly denotes guaranteed functionality down to 2.7V VCC, validated per FN8191 Rev.4.00 Absolute Maximum Ratings.

How does the X9408WV24-2.7 retain wiper position after power cycling?

The X9408WV24-2.7 automatically loads the contents of Data Register 0 (DR0) into each wiper counter register (WCR) at power-up. DR0 is nonvolatile and retains its value for 100 years. This ensures repeatable, deterministic startup behavior without MCU intervention-critical for unattended or safety-critical systems where manual recalibration is impractical.

Can the X9408WV24-2.7 be used in bipolar analog signal paths?

Yes. The X9408WV24-2.7 supports independent V+ and V− analog supplies ranging from ±2.7V to ±5.5V, enabling direct use in bipolar signal chains (e.g., op-amp feedback with ±5V rails). Its VH/VL/VW pins tolerate voltages from V− to V+, and wiper leakage current is specified down to 0.1µA across that full range-unlike single-supply pots limited to 0V–VCC operation.

What is the maximum number of devices supported on a single 2-wire bus?

The X9408WV24-2.7 supports up to 16 devices on one 2-wire bus via its 4-bit hardware address inputs (A0–A3). Each device's 8-bit slave address begins with fixed type identifier 0101, followed by the user-configurable A3–A0 bits. No software address assignment is needed-addressing is purely hardware-defined and collision-free when pins are uniquely set.

Does the X9408WV24-2.7 support real-time wiper adjustment without register writes?

Yes. The X9408WV24-2.7 implements an Increment/Decrement command mode: after issuing the command, the host can pulse SCL while holding SDA HIGH (increment) or LOW (decrement) to move the selected wiper one tap per clock edge. This enables smooth, jitter-free analog tuning-e.g., for audio fade controls or laser power ramping-without full instruction overhead or bus arbitration delays.