Renesas X9250US24Z-2.7T1

Overview

X9250US24Z-2.7T1 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. It integrates four independent 50kΩ resistor arrays, each with nonvolatile data registers and wiper position storage, enabling precision analog control in mixed-signal systems such as programmable gain amplifiers and voltage regulator feedback networks.

For engineers reviewing the X9250US24Z-2.7T1 datasheet, X9250US24Z-2.7T1 pinout, X9250US24Z-2.7T1 application, or X9250US24Z-2.7T1 equivalent, key selection criteria include its 2.7V–5.5V VCC range, 50kΩ end-to-end resistance, 0.4% resolution, 40Ω typical wiper resistance at 5V, and support for industrial-grade temperature operation (0°C to +70°C) in Pb-free SOIC-24 packaging.

Technical Context

The X9250US24Z-2.7T1 implements four independent 255-segment resistor arrays with CMOS switch-controlled wipers, each driven by an 8-bit volatile Wiper Counter Register (WCR). Each array supports three-terminal potentiometer or two-terminal variable resistor configurations with 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 via WP, and HOLD for serial communication pause. Nonvolatile writes to its four 8-bit Data Registers require up to 10ms and are enabled only when WP = HIGH; power-up loads DR0 into each WCR.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP42050-I/P, the X9250US24Z-2.7T1 uniquely delivers quad-channel 50kΩ pots with bipolar analog supplies, nonvolatile wiper recall, and hardware write protection - making it optimal for embedded systems requiring robust, self-contained analog parameter control without external memory or supply sequencing constraints.

Availability

X9250US24Z-2.7T1 is available at Aetrix Electronics and suitable for programmable gain amplifiers, voltage regulator feedback networks, offset voltage calibration circuits, and audio channel balance control requiring stable component supply across commercial temperature range (0°C to +70°C).

Supply support for X9250US24Z-2.7T1 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 manufacturer specializing in precision analog, power management, and interface ICs for industrial, communications, and computing applications.

The X9250 product line was designed for high-reliability analog parameter control in systems requiring nonvolatile calibration storage, SPI configurability, and bipolar signal handling - targeting test equipment, power supplies, and sensor conditioning modules.

FAQ

What is the operating temperature range for the X9250US24Z-2.7T1?

The X9250US24Z-2.7T1 is rated for commercial temperature operation from 0°C to +70°C. This is confirmed in the Ordering Information table (Page 2), where "X9250US24Z-2.7" explicitly lists "0 to +70" under TEMP. RANGE. It does not support industrial-range (−40°C to +85°C) operation like the "X9250US24IZ-2.7" variant.

Does the X9250US24Z-2.7T1 support true bipolar analog operation?

Yes. The X9250US24Z-2.7T1 supports independent analog supplies V+ = +2.7V to +5.5V and V− = −2.7V to −5.5V, enabling full bipolar signal conditioning. This is specified in the "Power supplies" bullet (Page 1) and Absolute Maximum Ratings (Page 11), where V− is defined down to −5.5V and (V+) − (V−) is rated up to 12V.

How many nonvolatile data registers does each potentiometer in the X9250US24Z-2.7T1 have?

Each of the four potentiometers in the X9250US24Z-2.7T1 has four independent 8-bit nonvolatile Data Registers (DR0–DR3), as stated in the FEATURES section (Page 1) and elaborated in the DEVICE DESCRIPTION (Page 4). These registers store wiper positions or system parameters with 100-year data retention.

What is the maximum SPI clock frequency supported by the X9250US24Z-2.7T1?

The X9250US24Z-2.7T1 supports a maximum SPI clock frequency of 2.0 MHz, as specified in the AC TIMING table (Page 13) under "fSCK". This applies across the full operating temperature and supply range, with timing parameters (tWH, tWL, tSU, etc.) guaranteed at this rate.

Can the X9250US24Z-2.7T1 be used as a two-terminal variable resistor?

Yes. Per the DESCRIPTION (Page 1), the X9250US24Z-2.7T1 "can be used as a three-terminal potentiometer or as a two-terminal variable resistor". Each array's VH/RH and VL/RL terminals serve as fixed ends, while VW/RW is the adjustable node - allowing two-terminal use by connecting either VH/RH or VL/RL to VW/RW, depending on configuration.