Renesas X9250US24IZ-2.7

Overview

X9250US24IZ-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution per channel, SPI serial interface, and dual analog supply capability (V+ = +2.7V to +5.5V, V− = −2.7V to −5.5V). It integrates four independent 50 kΩ potentiometers in a single 24-lead SOIC package, supporting three-terminal potentiometer or two-terminal variable resistor configurations in precision analog signal conditioning circuits.

For engineers reviewing the X9250US24IZ-2.7 datasheet, X9250US24IZ-2.7 pinout, X9250US24IZ-2.7 application, or X9250US24IZ-2.7 equivalent, this device delivers nonvolatile wiper position storage, <5 µA standby current, 0.4% resolution, and hardware write protection - critical for industrial sensor calibration, programmable gain amplifiers, and voltage regulator feedback networks requiring stable, reconfigurable resistance without mechanical wear.

Technical Context

The X9250US24IZ-2.7 implements four independent 255-segment resistor arrays, each controlled by an 8-bit volatile Wiper Counter Register (WCR) and four 8-bit nonvolatile Data Registers (DR0–DR3). Wiper position is updated via SPI commands including direct WCR write, DR-to-WCR transfer, or increment/decrement mode with real-time SCK-synchronized stepping.

Its dual-supply architecture supports true bipolar operation (±2.7V to ±5.5V), enabling AC-coupled signal attenuation and offset adjustment across rail-to-rail input ranges. The device uses CMOS switches for wiper connection, delivering 40 Ω typical wiper resistance at VCC = 5 V and maintaining ratiometric temperature coefficient of ±20 ppm/°C for high-precision voltage division.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), RoHS-compliant Pb-free plus anneal 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 X9250US24IZ-2.7 uniquely supports true bipolar analog operation via dedicated V+/V− supplies, offers hardware write protection, and maintains lower wiper resistance - making it the only option among the three suitable for precision AC-coupled instrumentation and rail-to-rail sensor conditioning.

Availability

X9250US24IZ-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, medical instrumentation, and audio signal conditioning requiring stable component supply across extended temperature and voltage ranges.

Supply support for X9250US24IZ-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 product line was designed specifically for digitally reconfigurable analog signal conditioning - targeting applications demanding nonvolatile resistance storage, low noise, and robust bipolar operation in harsh environments.

FAQ

What is the operating temperature range for the X9250US24IZ-2.7?

The X9250US24IZ-2.7 is rated for industrial temperature operation from −40°C to +85°C. This specification is confirmed in the Ordering Information table on page 2 of FN8165 Rev.3.00, where "X9250US24IZ-2.7" is explicitly listed with "−40 to +85°C" under TEMP. RANGE. Its SOIC package and Pb-free construction support reliable performance across this full industrial range.

Does the X9250US24IZ-2.7 support true bipolar analog operation?

Yes, the X9250US24IZ-2.7 supports true bipolar analog operation via dedicated V+ and V− pins, rated from −2.7V to −5.5V and +2.7V to +5.5V respectively. This enables AC-coupled signal paths and rail-to-rail wiper voltage swing independent of digital VCC. The datasheet confirms this in the "Power supplies" bullet on page 1 and the "Vv+ / Vv−" specifications on page 11.

How many nonvolatile data registers does each potentiometer in the X9250US24IZ-2.7 have?

Each of the four potentiometers in the X9250US24IZ-2.7 has four independent 8-bit nonvolatile Data Registers (DR0–DR3), as stated in the FEATURES section on page 1 and detailed in the DEVICE DESCRIPTION on page 4. These registers store wiper positions or system parameters with 100-year data retention and 100,000-cycle endurance.

What is the maximum SPI clock frequency supported by the X9250US24IZ-2.7?

The X9250US24IZ-2.7 supports a maximum SPI clock frequency of 2.0 MHz, as specified in the AC TIMING table on page 13 of FN8165 Rev.3.00. This timing is validated across the full operating temperature and voltage range, enabling rapid wiper updates during system initialization or dynamic gain switching sequences.

Can the X9250US24IZ-2.7 be used as a two-terminal variable resistor?

Yes, the X9250US24IZ-2.7 can be configured as a two-terminal variable resistor by connecting either VHx or VLx to the wiper VWx, leaving the other terminal open or grounded. The datasheet explicitly states this capability in the DESCRIPTION section on page 1: "The XDCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor…"