Renesas X9250US24Z-2.7

Overview

X9250US24Z-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution per channel, SPI serial interface, 50kΩ end-to-end resistance, ±20% tolerance, and dual analog supply support (V+ = +2.7V to +5.5V, V− = −2.7V to −5.5V). It operates from 0°C to +70°C in Pb-free 24-lead SOIC packaging and is used for precision gain/offset trimming in instrumentation amplifiers and programmable voltage regulators.

For engineers reviewing the X9250US24Z-2.7 datasheet, X9250US24Z-2.7 pinout, X9250US24Z-2.7 application, or X9250US24Z-2.7 equivalent, key selection criteria include its 2.7V–5.5V VCC range, nonvolatile wiper position storage across four independent pots, 40Ω typical wiper resistance at 5V, <5µA standby current, and hardware write protection via WP pin.

Technical Context

The X9250US24Z-2.7 implements four independent 255-segment resistor arrays with CMOS switch-controlled wipers, each driven by an 8-bit volatile Wiper Counter Register (WCR) and backed by four 8-bit nonvolatile Data Registers (DR0–DR3). Its SPI interface supports full-duplex communication with rising-edge data latching on SI and falling-edge data output on SO, and includes HOLD for serial pause/resume functionality without reset.

It supports dual-supply operation: V+ and V− power the analog resistor arrays while VCC powers the digital logic, enabling true bipolar signal conditioning (e.g., ±2.7V to ±5.5V across VH/VL terminals). Power-up automatically loads DR0 into each WCR, ensuring repeatable startup wiper positions without host initialization.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), RoHS-compliant Pb-free finish (M24.3 drawing), body dimensions 15.4mm × 7.5mm × 2.3mm.

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-2.7 uniquely supports true bipolar analog operation and retains calibrated settings indefinitely-making it essential for precision instrumentation and industrial control where signal integrity and calibration permanence are non-negotiable.

Availability

X9250US24Z-2.7 is available at Aetrix Electronics and suitable for instrumentation amplifier trimming, programmable voltage regulation, comparator hysteresis control, and stereo audio balance adjustment requiring stable component supply across production lifecycles.

Supply support for X9250US24Z-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 high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.

The X9250 series was designed specifically for replacing mechanical potentiometers in high-reliability, calibration-critical systems-emphasizing nonvolatile memory, bipolar operation, and industrial-grade endurance.

FAQ

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

The X9250US24Z-2.7 is rated for commercial temperature operation from 0°C to +70°C, as confirmed in the Ordering Information table of FN8165 Rev.3.00. This distinguishes it from industrial-grade variants (e.g., X9250US24I-2.7) rated for −40°C to +85°C. The X9250US24Z-2.7 maintains full specification compliance-including 256-tap resolution, 50kΩ resistance, and nonvolatile data retention-across this range.

Does the X9250US24Z-2.7 support true bipolar analog operation?

Yes, the X9250US24Z-2.7 supports true bipolar analog operation via separate V+ (+2.7V to +5.5V) and V− (−2.7V to −5.5V) supplies, enabling VH/RH and VL/RL terminals to swing across ±2.7V to ±5.5V. This is explicitly specified in the Recommended Operating Conditions table (Page 11) and differentiates it from single-supply digital potentiometers. The X9250US24Z-2.7 uses these rails exclusively for its resistor arrays, while VCC powers only the digital interface.

How many nonvolatile registers does the X9250US24Z-2.7 provide per potentiometer?

The X9250US24Z-2.7 provides four 8-bit nonvolatile Data Registers (DR0 through DR3) for each of its four potentiometers, totaling 16 independent nonvolatile storage locations. As documented on Page 4 of FN8165 Rev.3.00, these registers retain values for 100 years and support direct read/write, global transfer to Wiper Counter Registers, and hardware write protection via the WP pin-enabling robust calibration storage in the X9250US24Z-2.7.

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

The X9250US24Z-2.7 supports a maximum SPI clock frequency of 2.0 MHz, as specified in the AC Timing table (Page 13) of FN8165 Rev.3.00. This timing applies across the full operating temperature and supply range. The device requires setup/hold times of 50ns and 75ns respectively for SI, SCK, HOLD, and CS inputs, and guarantees valid SO output within 100ns after the falling SCK edge-ensuring reliable communication with standard microcontrollers at this rate.

Is the X9250US24Z-2.7 pin-compatible with other members of the X9250 family?

Yes, the X9250US24Z-2.7 shares identical 24-lead SOIC pinout and electrical interface with all X9250 variants-including X9250US24, X9250US24I, X9250TS24Z-2.7, and X9250UV24IZ-2.7-as confirmed by the unified Pin Configuration diagram (Page 3) and consistent PIN DESCRIPTIONS section (Page 3) in FN8165 Rev.3.00. Differences between variants are limited to temperature grade, resistance value (50kΩ vs. 100kΩ), supply voltage limits, and packaging (Pb-free vs. standard), not pin function or layout.