Renesas X9250US24IZ-2.7T2

Overview

X9250US24IZ-2.7T2 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution per channel, SPI serial interface, ±2.7V to ±5.5V dual analog supply range, 50kΩ end-to-end resistance, and nonvolatile wiper position storage. It operates across –40°C to +85°C in 24-lead SOIC packaging and is used for precision analog signal conditioning in programmable gain amplifiers and voltage reference trimming.

For engineers reviewing the X9250US24IZ-2.7T2 datasheet, X9250US24IZ-2.7T2 pinout, X9250US24IZ-2.7T2 application, or X9250US24IZ-2.7T2 equivalent, key selection criteria include its dual-supply analog rail support (V+/V–), 4 independent nonvolatile data registers per pot, <5µA standby current, wiper resistance of 150–250Ω, and compatibility with standard SPI clock frequencies up to 2MHz.

Technical Context

The X9250US24IZ-2.7T2 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). Its SPI interface supports read/write of wiper positions and register transfers, including global operations across all four pots.

It implements hardware write protection via the WP pin, device addressing via A0/A1 pins (supporting up to four devices on one bus), and pause/resume capability via HOLD. The analog section operates from separate V+/V– supplies, enabling true bipolar operation, while digital logic runs from VCC (2.7V–5.5V).

Key Specifications

Pinout & Package

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

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 X9250US24IZ-2.7T2 uniquely delivers quad-channel integration, nonvolatile wiper storage per channel, and dedicated V+/V– analog supplies - making it the only option among the three capable of autonomous bipolar signal conditioning without external support circuitry.

Availability

X9250US24IZ-2.7T2 is available at Aetrix Electronics and suitable for programmable gain amplifiers, voltage reference trimming, audio channel balancing, and bipolar signal attenuation requiring stable component supply and long-term calibration integrity.

Supply support for X9250US24IZ-2.7T2 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 aerospace applications.

The X9250 product line was designed for high-reliability analog system calibration - delivering nonvolatile digital control of resistance with bipolar supply support, 100-year data retention, and robust SPI interface for embedded firmware integration.

FAQ

What is the operating temperature range for the X9250US24IZ-2.7T2?

The X9250US24IZ-2.7T2 is rated for industrial operation from –40°C to +85°C. This range is confirmed in the Ordering Information table on page 2 of FN8165 Rev.3.00, where "X9250US24IZ-2.7" explicitly lists –40 to +85°C under Temperature Range. The "IZ" suffix denotes industrial temperature grade and Pb-free packaging.

Does the X9250US24IZ-2.7T2 support true bipolar analog operation?

Yes, the X9250US24IZ-2.7T2 supports true bipolar analog operation via dedicated V+ and V– supply pins. Per page 11 of FN8165 Rev.3.00, V+ ranges from +2.7V to +5.5V and V– from –2.7V to –5.5V, enabling VH/VL/VW terminals to swing across the full dual-rail range. This allows direct interfacing with bipolar op-amps and AC-coupled signal paths without level-shifting circuitry.

How many nonvolatile data registers does the X9250US24IZ-2.7T2 provide per potentiometer?

The X9250US24IZ-2.7T2 provides four nonvolatile Data Registers (DR0–DR3) per potentiometer, as stated in the Features section (page 1) and detailed in the Device Description (page 4). Each register is 8 bits wide and supports direct read/write, and DR0 is automatically loaded into the Wiper Counter Register (WCR) at power-up.

What is the maximum SPI clock frequency supported by the X9250US24IZ-2.7T2?

The X9250US24IZ-2.7T2 supports a maximum SPI clock frequency of 2MHz, as specified in the AC Timing table on page 13 of FN8165 Rev.3.00 under parameter fSCK. This applies across the full operating temperature and supply range, enabling fast wiper updates and register transfers in time-critical applications.

Is hardware write protection available on the X9250US24IZ-2.7T2?

Yes, the X9250US24IZ-2.7T2 includes a dedicated Hardware Write Protect (WP) pin. As described on page 3, when WP is held LOW, nonvolatile writes to the Data Registers are disabled - preventing accidental corruption of calibrated settings during power-up sequences or firmware updates. WP is active-low and must be pulled high to enable writes.