Renesas X9250TS24

Overview

X9250TS24 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 100kΩ potentiometers in a single 24-lead SOIC package, supporting precision voltage divider, gain control, and offset adjustment in mixed-signal systems.

For engineers reviewing the X9250TS24 datasheet, X9250TS24 pinout, X9250TS24 application, or X9250TS24 equivalent, this device delivers nonvolatile wiper position storage, <5µA standby current, 0.4% resolution, and hardware write protection-key selection criteria for programmable analog front-ends in industrial instrumentation and audio signal conditioning.

Technical Context

The X9250TS24 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, VL/RL, and VW/RW terminals.

It uses standard SPI protocol (CS, SCK, SI, SO) with device addressing via A0/A1 pins, HOLD for serial pause, and WP for hardware write protection. Nonvolatile Data Registers (DR0–DR3) retain wiper settings for 100 years and endure 100,000 write cycles per bit.

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 AD5204BRZ10 and MCP42050-I/P, the X9250TS24 uniquely combines quad-channel 100kΩ pots, bipolar analog supply support, and guaranteed 100-year nonvolatile retention - making it the only option for maintenance-free, field-deployed analog trimming in harsh environments.

Availability

X9250TS24 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical instrument gain scaling, programmable power supply feedback, and audio signal level control requiring stable component supply and long-term calibration integrity.

Supply support for X9250TS24 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, aerospace, and medical applications.

The X9250 series was designed as a drop-in replacement for mechanical potentiometers in automated test equipment and programmable analog signal chains, emphasizing reliability, nonvolatile memory, and true bipolar operation.

FAQ

What is the operating voltage range for the analog section of the X9250TS24?

The X9250TS24 analog section operates from V+ = +2.7V to +5.5V and V– = –2.7V to –5.5V, enabling true bipolar signal handling. This allows direct connection to op-amp inputs referenced to split supplies without level-shifting circuitry. The digital interface (VCC/VSS) is independent and rated for 2.7V to 5.5V.

Does the X9250TS24 retain wiper settings after power loss?

Yes, the X9250TS24 retains wiper positions in nonvolatile Data Registers (DR0–DR3) with 100-year data retention. On power-up, DR0 automatically loads into the volatile Wiper Counter Register (WCR), restoring the last saved setting without host intervention - a key feature for unattended industrial systems.

How many devices can share the same SPI bus with the X9250TS24?

Up to four X9250TS24 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, enabling compact multi-channel analog control without additional chip select lines.

What is the maximum wiper current rating for the X9250TS24?

The X9250TS24 specifies a maximum wiper current of ±7.5mA per potentiometer. Exceeding this may cause irreversible resistance drift or damage. This rating supports typical use cases like op-amp biasing and voltage divider loading but excludes high-current applications such as motor control or power regulation feedback.

Can the X9250TS24 be used as a two-terminal variable resistor?

Yes, the X9250TS24 supports two-terminal operation by connecting either VH/RH or VL/RL to circuit ground or a fixed reference and using VW/RW as the adjustable terminal. This configuration is commonly used in programmable gain stages and current-source biasing, leveraging the device's 40Ω typical wiper resistance for minimal insertion error.