Renesas X9250TV24

Overview

X9250TV24 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution per channel, SPI serial interface, and dual analog supply rails (V+ = +2.7V to +5.5V, V– = –2.7V to –5.5V). It integrates four independent 100kΩ potentiometers in a single 24-lead TSSOP package, supports nonvolatile wiper position storage, and delivers <5µA standby current - ideal for precision biasing and gain control in industrial sensor signal conditioning circuits.

For engineers reviewing the X9250TV24 datasheet, X9250TV24 pinout, X9250TV24 application, or X9250TV24 equivalent, this device offers verified quad-channel digital potentiometry with ±0.4% resolution, hardware write protection (WP), HOLD functionality for SPI pause/resume, and guaranteed 100-year data retention in its four nonvolatile registers per potentiometer.

Technical Context

The X9250TV24 implements four independent resistor arrays, each with 255 discrete segments and CMOS-switched wiper taps controlled by an 8-bit volatile Wiper Counter Register (WCR). Each array supports three-terminal potentiometer or two-terminal variable resistor configurations, with VH/RH and VL/RL pins serving as fixed terminals and VW/RW as the programmable wiper output.

Its SPI interface operates at up to 2MHz with full instruction set support including read/write WCR and Data Registers (DR0–DR3), global transfers, and real-time increment/decrement via SI-driven clock pulses. Nonvolatile writes require CS high-to-low transition and complete within 10ms, with WIP bit monitoring available via Read Status command.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4mm width, MDP0044 footprint), RoHS-compliant Pb-free plus anneal finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally controlled potentiometer applications.

Compared with AD5242BRUZ100 and MCP42050-I/SL, the X9250TV24 uniquely delivers quad-channel 100kΩ potentiometry with bipolar analog supply support in a single 24-lead TSSOP, enabling compact, high-precision calibration of multi-sensor systems without external level-shifting or discrete component duplication.

Availability

X9250TV24 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical instrumentation signal conditioning, and telecom line-card biasing requiring stable component supply and long-term parameter retention.

Supply support for X9250TV24 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 for precision power management, thermal sensing, and interface applications.

The X9250TV24 belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered specifically for replacing mechanical trimmers in harsh-environment systems requiring long-term stability, programmability, and nonvolatile memory.

FAQ

What is the power-up behavior of the X9250TV24 wiper positions?

Upon power-up, the X9250TV24 automatically loads the contents of Data Register 0 (DR0) for each potentiometer into its corresponding volatile Wiper Counter Register (WCR). This ensures repeatable startup states without host intervention. The recall occurs only after all supplies (VCC, V+, V–) stabilize, with tPUW = 5ms minimum delay required before issuing the first write command to preserve DR0 integrity.

Can the X9250TV24 operate with unipolar analog supplies?

Yes, the X9250TV24 supports unipolar operation: configure V– = VSS (0V) and V+ = VCC (2.7V–5.5V). In this mode, it functions as a standard 0–VCC range digital potentiometer. However, the full ±5.5V bipolar capability remains accessible if V– is driven negative - no hardware change is needed, only supply configuration.

How does the HOLD pin affect SPI communication with the X9250TV24?

The HOLD pin pauses ongoing SPI transactions without resetting the internal state machine. To activate, bring HOLD low while SCK is low; resume by returning HOLD high, again with SCK low. During hold, SI/SO remain tri-stated and clocks are ignored - this prevents bus conflicts during MCU interrupt servicing or debug probe attachment.

What is the maximum allowable voltage on VH/RH and VL/RL pins relative to V+ and V–?

VH/RH pins must not exceed V+, and VL/RL pins must not fall below V–. Absolute maximum ratings specify VH/RH ≤ V+ and VL/RL ≥ V–, with V+ – V– ≤ 12V. Exceeding these violates the absolute maximum rating and risks permanent damage to the internal CMOS switches and resistor arrays of the X9250TV24.

Is the X9250TV24 pin-compatible with other members of the X9250 family?

Yes, all X9250 variants (X9250TV24, X9250TS24, X9250UV24, etc.) share identical 24-lead TSSOP and SOIC pinouts and electrical interfaces. Differences are limited to supply voltage ranges (e.g., X9250TV24-2.7 supports 2.7V–5.5V VCC), temperature grade, and packaging - enabling direct substitution in most designs without PCB revision.