Renesas X9250US24Z

Overview

X9250US24Z from Intersil is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution per channel, SPI serial interface, and dual ±2.7V to ±5.5V analog supplies (V+/V−), operating from 0°C to +70°C in 24-lead SOIC. It integrates four independent 50kΩ potentiometers with nonvolatile wiper position storage, <5µA standby current, and 40Ω typical wiper resistance at 5V - used for precision gain/offset trimming in programmable power supplies and sensor signal conditioning.

For engineers reviewing the X9250US24Z datasheet, X9250US24Z pinout, X9250US24Z application, or X9250US24Z equivalent, key selection considerations include its 50kΩ end-to-end resistance, RoHS-compliant Pb-free SOIC-24 package, hardware write-protect (WP) pin, HOLD functionality for SPI pause/resume, and support for dual-supply operation down to ±2.7V.

Technical Context

The X9250US24Z implements four independent 255-segment resistor arrays with CMOS-switched wipers controlled by volatile Wiper Counter Registers (WCRs), each backed by four 8-bit nonvolatile Data Registers (DR0–DR3). Power-up loads DR0 into the corresponding WCR, enabling deterministic startup behavior.

It supports full SPI protocol compliance including read/write WCR and DR instructions, global data transfer, increment/decrement wiper control, and status monitoring via WIP bit. The device requires VCC (2.7V–5.5V), V+ (±2.7V to ±5.5V), and V− supplies, with all pot pins referenced strictly between V− and V+.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), RoHS-compliant Pb-free finish (M24.3 drawing).

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 X9250US24Z uniquely supports true bipolar analog operation with separate V+/V− rails and provides four independent 50kΩ channels in a single SOIC-24 package - making it optimal for industrial sensor interfaces and programmable power supplies requiring calibration persistence and wide supply flexibility.

Availability

X9250US24Z is available at Aetrix Electronics and suitable for programmable power supplies, sensor signal conditioning, audio channel balancing, and industrial DAC output scaling requiring stable component supply and long-term calibration integrity.

Supply support for X9250US24Z 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 X9250 series was designed as a family of quad digitally controlled potentiometers targeting high-reliability calibration and trimming applications in programmable analog systems requiring nonvolatile storage and dual-supply operation.

FAQ

What is the maximum operating temperature range for the X9250US24Z?

The X9250US24Z is rated for commercial temperature operation from 0°C to +70°C, as confirmed in the Ordering Information table on page 2 of FN8165 Rev.3.00. This distinguishes it from industrial-grade variants like X9250US24I (−40°C to +85°C) and confirms its suitability for indoor, non-extreme environment applications.

Does the X9250US24Z support true bipolar analog operation?

Yes, the X9250US24Z supports true bipolar analog operation via dedicated V+ and V− pins, each rated from ±2.7V to ±5.5V. All potentiometer terminals (VH/RH, VL/RL, VW/RW) must remain within this V− to V+ range, enabling direct use in ±12V op-amp circuits and other bipolar signal paths without external level-shifting circuitry.

How many nonvolatile registers does each potentiometer in the X9250US24Z have?

Each of the four potentiometers in the X9250US24Z has four 8-bit nonvolatile Data Registers (DR0 through DR3), as specified in the Device Description section (page 4) and Figure 1. These registers retain wiper positions and system parameters for up to 100 years and support direct read/write and global transfer operations.

What is the purpose of the HOLD pin on the X9250US24Z?

The HOLD pin on the X9250US24Z pauses ongoing SPI communication without resetting the command sequence. When asserted LOW while SCK is LOW, it freezes data transfer; returning HOLD HIGH (with SCK still LOW) resumes operation. This feature enables priority interrupt handling in microcontroller systems without losing synchronization with the X9250US24Z.

Can the X9250US24Z be used as a two-terminal variable resistor?

Yes, the X9250US24Z can be configured as a two-terminal variable resistor by connecting either VH/RH or VL/RL to the wiper (VW/RW) terminal, as explicitly stated in the DESCRIPTION section (page 1). This mode is commonly used for programmable current limiting or adjustable biasing where only resistance variation-not voltage division-is required.