Renesas X9250US24-2.7

Overview

X9250US24-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution per channel, SPI serial interface, 50kΩ end-to-end resistance, dual analog supply support (±2.7V to ±5.5V), and nonvolatile wiper position storage. It operates across 0°C to +70°C in 24-lead SOIC and serves as precision voltage divider or variable resistor in programmable gain control, sensor calibration, and DC bias adjustment circuits.

For engineers reviewing the X9250US24-2.7 datasheet, X9250US24-2.7 pinout, X9250US24-2.7 application, or X9250US24-2.7 equivalent, this page delivers verified electrical specs, validated SPI timing constraints, confirmed 24-pin SOIC package mapping, real-world use cases for analog signal conditioning, and two technically documented alternative parts with explicit functional and application-level differences.

Technical Context

The X9250US24-2.7 integrates four independent 255-segment resistor arrays, each controlled by an 8-bit volatile Wiper Counter Register (WCR) and backed by four 8-bit nonvolatile Data Registers (DR0–DR3). Wiper position is updated via SPI commands including direct write, register transfer, and increment/decrement modes - all with ≤10 µs response after instruction issuance.

It supports true dual-supply analog operation (V+ = +2.7V to +5.5V, V− = −2.7V to −5.5V), enabling bipolar signal handling. Standby current is <5 µA total, and nonvolatile writes require up to 10 ms with hardware write protection via the WP pin. Power-up automatically loads DR0 into each WCR.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), RoHS-compliant, Pb-free plus anneal option available.

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 X9250US24-2.7 uniquely supports true bipolar analog signal routing via dedicated V+/V− supplies, retains four independent pots in one package, and provides hardware write protection - making it optimal for industrial sensor front-ends requiring field recalibration and rail-to-rail signal handling.

Availability

X9250US24-2.7 is available at Aetrix Electronics and suitable for programmable gain amplifiers, sensor offset calibration circuits, DC bias adjustment networks, and voltage regulator feedback tuning requiring stable component supply across commercial temperature range (0°C to +70°C).

Supply support for X9250US24-2.7 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 precision analog, power management, and interface ICs for industrial, communications, and computing markets.

The X9250 series was designed as a monolithic quad digitally controlled potentiometer family to replace mechanical trimmers in automated test equipment, medical instrumentation, and programmable power supplies - emphasizing nonvolatile setting retention, low noise, and dual-supply flexibility.

FAQ

What is the operating temperature range for the X9250US24-2.7?

The X9250US24-2.7 is rated for commercial temperature operation from 0°C to +70°C. This is explicitly defined in the Ordering Information table of the FN8165 datasheet and distinguishes it from industrial-grade variants (e.g., X9250US24I-2.7) rated from −40°C to +85°C. The device's performance specifications - including wiper resistance, linearity, and SPI timing - are guaranteed within this 0°C to +70°C range.

Does the X9250US24-2.7 support true bipolar analog operation?

Yes, the X9250US24-2.7 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 allows the four integrated potentiometers to handle signals spanning both positive and negative rails - unlike single-supply digital potentiometers. The VHx/VLx terminals can be biased across this full range, enabling AC-coupled signal conditioning and offset adjustment in mixed-signal systems.

How many nonvolatile data registers does each potentiometer in the X9250US24-2.7 have?

Each of the four potentiometers in the X9250US24-2.7 has four independent 8-bit nonvolatile Data Registers (DR0 through DR3). These registers store wiper positions or system parameters and retain data for up to 100 years. DR0 is automatically loaded into the corresponding volatile Wiper Counter Register (WCR) at power-up, providing deterministic startup behavior without MCU intervention.

What is the maximum SPI clock frequency supported by the X9250US24-2.7?

The X9250US24-2.7 supports a maximum SPI clock frequency of 2.0 MHz, as specified in the AC Timing section of the FN8165 datasheet. This allows efficient reconfiguration of all four potentiometers in under 100 µs per full 24-bit transaction. Timing parameters including tSU (50 ns setup), tH (75 ns hold), and tCYC (500 ns cycle time) are fully characterized for reliable operation at this rate.

Can the X9250US24-2.7 be used as a two-terminal variable resistor?

Yes, the X9250US24-2.7 can be configured as a two-terminal variable resistor by connecting either VHx/RHx or VLx/RLx to the wiper VWx/RWx, leaving the other terminal open or grounded. This mode is explicitly supported in the Applications Information section and maintains the same 256-step resolution and nonvolatile storage. Wiper resistance remains 250 Ω typical, limiting usable current to ±7.5 mA per potentiometer.