Renesas X9401WS24Z-2.7

Overview

X9401WS24Z-2.7 from Intersil is a quad-channel, 64-tap digitally controlled potentiometer (XDCP™) with SPI interface, 10 kΩ end-to-end resistance, 150 Ω typical wiper resistance, and 2.7 V to 5.5 V supply operation - used for precision analog trimming in voltage regulators, amplifier gain control, and offset adjustment circuits.

For engineers reviewing the X9401WS24Z-2.7 datasheet, X9401WS24Z-2.7 pinout, X9401WS24Z-2.7 application, or X9401WS24Z-2.7 equivalent, key selection criteria include nonvolatile wiper position storage, four independent 6-bit data registers per pot, <3 µA standby current, and SOIC-24 package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The X9401WS24Z-2.7 implements four independent resistor arrays, each with 63 segments and 64 tap points controlled by a volatile 6-bit Wiper Counter Register (WCR). Each array supports three-terminal potentiometer or two-terminal variable resistor configurations via VH/RH, VL/RL, and VW/RW terminals.

It uses standard SPI protocol (CS, SCK, SI, SO) with device addressing via A0/A1 pins, hardware write protection (WP), and serial hold (HOLD) functionality. Nonvolatile writes to data registers require CS high-to-low transition and complete within 10 ms, with 100-year data retention and 100,000-cycle endurance.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), Pb-free, RoHS-compliant (M24.3 drawing), industrial temperature range (–40°C to +85°C).

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/P, the X9401WS24Z-2.7 uniquely combines quad-channel SPI control, 2.7 V operation, nonvolatile wiper recall from DR0, and 100-year data retention - making it optimal for industrial recalibration-critical systems.

Availability

X9401WS24Z-2.7 is available at Aetrix Electronics and suitable for voltage regulation, programmable gain amplification, comparator hysteresis setting, and audio tone/volume trimming requiring stable component supply across extended product lifecycles.

Supply support for X9401WS24Z-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 Corporation is a pioneer in precision analog and power management ICs, delivering high-reliability solutions for industrial, infrastructure, and high-end consumer markets.

The X9401 product line was designed for digitally reconfigurable analog signal conditioning - targeting applications demanding nonvolatile calibration, low power, and robust SPI interoperability in harsh environments.

FAQ

What is the operating voltage range for the X9401WS24Z-2.7?

The X9401WS24Z-2.7 operates from 2.7 V to 5.5 V, enabling direct integration into both 3.3 V and 5 V systems without external level-shifting circuitry. This range is validated across the full industrial temperature range (–40°C to +85°C) and supports stable wiper positioning and SPI communication at minimum supply.

Does the X9401WS24Z-2.7 retain its wiper position after power cycling?

Yes - the X9401WS24Z-2.7 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR) at power-up. To preserve a specific wiper position across power cycles, that value must first be written to DR0 using a nonvolatile write command, which completes in ≤10 ms.

How many independent potentiometers does the X9401WS24Z-2.7 contain?

The X9401WS24Z-2.7 integrates four fully independent digitally controlled potentiometers (XDCPs), each with its own 64-tap resistor array, dedicated WCR, and four nonvolatile data registers (DR0–DR3). All four channels operate simultaneously and can be addressed individually via SPI.

What is the maximum SPI clock frequency supported by the X9401WS24Z-2.7?

The X9401WS24Z-2.7 supports SPI clock frequencies up to 2 MHz, with guaranteed timing margins for setup/hold, valid output, and disable times. At this rate, wiper position updates (e.g., Write WCR instruction) complete in under 10 µs, enabling responsive closed-loop analog control.

Can the X9401WS24Z-2.7 be used as a two-terminal variable resistor?

Yes - each of the four potentiometers in the X9401WS24Z-2.7 can be configured as a two-terminal variable resistor by connecting either VH or VL to VW (wiper), while leaving the other end open or grounded. This configuration is explicitly supported in the datasheet and used in current-setting and impedance-matching applications.