Renesas X9250TS24Z-2.7

Overview

X9250TS24Z-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP™) IC with 256-tap resolution per channel, SPI serial interface, and dual analog supply support (V+ = +2.7V to +5.5V, V– = –2.7V to –5.5V). It integrates four independent 100kΩ resistor arrays, nonvolatile wiper position storage, and operates across 0°C to +70°C in a Pb-free 24-lead SOIC package - used for precision voltage divider calibration in programmable power supplies.

For engineers reviewing the X9250TS24Z-2.7 datasheet, X9250TS24Z-2.7 pinout, X9250TS24Z-2.7 application, or X9250TS24Z-2.7 equivalent, this device delivers deterministic wiper positioning via SPI, low 40Ω typical wiper resistance at 5V, <5µA standby current, and high-reliability nonvolatile register retention (100 years, 100k write cycles), critical for embedded recalibration and factory-trimmed analog systems.

Technical Context

The X9250TS24Z-2.7 implements four independent 255-segment CMOS 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 instructions including direct WCR load, DR-to-WCR transfer, and real-time increment/decrement mode.

It supports true dual-supply operation: V+ and V– define the analog rail range (±2.7V to ±5.5V), while VCC powers the digital core (2.7V–5.5V). Hardware write protection (WP pin) disables nonvolatile writes, and HOLD enables serial communication pause without reset - enabling robust integration into multi-device SPI buses.

Key Specifications

Pinout & Package

Package: 24-lead SOIC (300 mil), Pb-free, RoHS-compliant (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 X9250TS24Z-2.7 uniquely supports true bipolar analog operation via dedicated V+/V– supplies, making it the only option among the three suitable for precision trimming in ±5V or ±3.3V signal chains without external level shifters.

Availability

X9250TS24Z-2.7 is available at Aetrix Electronics and suitable for programmable power supplies, sensor signal conditioning, audio channel balancing, and embedded reference voltage tuning requiring stable component supply and long-term calibration integrity.

Supply support for X9250TS24Z-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) designs high-performance analog and mixed-signal ICs focused on power management, precision analog, and interface solutions.

The X9250 series was developed as a family of digitally controlled potentiometers targeting recalibratable analog subsystems in industrial, telecom, and embedded computing applications - emphasizing nonvolatile memory, low power, and robust SPI control.

FAQ

What is the absolute maximum voltage rating for the V+ and V– pins of the X9250TS24Z-2.7?

The X9250TS24Z-2.7 specifies absolute maximum ratings of +10V on V+ and –10V on V–, with a maximum differential (V+) – (V–) of 12V. However, the recommended operating range is +2.7V to +5.5V for V+ and –2.7V to –5.5V for V–. Exceeding these recommended values risks permanent damage despite the higher absolute limits.

Does the X9250TS24Z-2.7 retain its wiper position after power cycling?

Yes - the X9250TS24Z-2.7 automatically loads the contents of Data Register 0 (DR0) into the Wiper Counter Register (WCR) at power-up. Since DR0 is nonvolatile and retains data for 100 years, the last stored wiper position is restored reliably across power cycles without host intervention.

Can the X9250TS24Z-2.7 operate with only a single positive supply (e.g., VCC = 3.3V, V+ = 3.3V, V– = 0V)?

Yes - the X9250TS24Z-2.7 supports unipolar operation: V– may be tied to VSS (0V) while V+ is set to the desired positive rail (e.g., 3.3V or 5V). The datasheet explicitly lists V– = 0V as valid within the "X9250-2.7" variant's operating conditions, enabling use in standard single-supply systems.

How many devices can share the same SPI bus with the X9250TS24Z-2.7?

Up to four X9250TS24Z-2.7 devices can share one SPI bus using the A0 and A1 address pins to configure unique 2-bit slave addresses. Each device responds only when its address matches the two LSBs of the 8-bit ID byte sent by the master controller.

What is the wiper resistance specification for the X9250TS24Z-2.7, and how does it affect circuit accuracy?

The X9250TS24Z-2.7 has a typical wiper resistance of 40Ω at VCC = 5V (max 250Ω). This resistance introduces series error in voltage divider configurations - for example, in a 100kΩ pot with wiper at mid-scale, 40Ω adds ~0.04% gain error. Designers must account for this in high-precision feedback paths or buffer the wiper output.