Renesas X9250TS24Z-2.7T1

Overview

X9250TS24Z-2.7T1 from Intersil is a quad digitally controlled potentiometer (XDCP™) 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 potentiometers in a single 24-pin SOIC package, featuring nonvolatile wiper position storage, <5µA standby current, and operation across 0°C to +70°C.

For engineers reviewing the X9250TS24Z-2.7T1 datasheet, X9250TS24Z-2.7T1 pinout, X9250TS24Z-2.7T1 application, or X9250TS24Z-2.7T1 equivalent, key selection criteria include its 2.7V–5.5V VCC range, ±2.7V to ±5.5V analog rail capability, 40Ω typical wiper resistance at 5V, 256-step resolution, and hardware write-protect (WP) functionality for reliable nonvolatile register updates.

Technical Context

The X9250TS24Z-2.7T1 implements four independent resistor arrays-each with 255 discrete segments and 256 tap points-controlled via an 8-bit volatile Wiper Counter Register (WCR) per channel. Wiper position is set through SPI commands including direct WCR write, data register transfer (DR0–DR3), or real-time increment/decrement.

Each potentiometer supports three-terminal (VH/RH–VL/RL–VW/RW) or two-terminal (VW/RW–VL/RL) configurations. Nonvolatile storage of wiper positions enables power-up recall from DR0, while hardware write protection (WP pin) prevents unintended DR writes during system operation.

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 AD5204BRUZ10 and MCP42050-I/P, the X9250TS24Z-2.7T1 uniquely supports true bipolar analog operation (±2.7V to ±5.5V), includes hardware write protection, and offers higher 256-tap resolution-making it the only option among the three suitable for precision instrumentation requiring stable, tamper-resistant, dual-rail analog control.

Availability

X9250TS24Z-2.7T1 is available at Aetrix Electronics and suitable for audio signal conditioning, programmable power supply trimming, sensor front-end gain calibration, and comparator hysteresis adjustment requiring stable component supply and long-term calibration integrity.

Supply support for X9250TS24Z-2.7T1 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 computing markets.

The X9250 series was designed specifically for high-reliability digital potentiometer applications requiring nonvolatile storage, bipolar analog support, and robust SPI control-targeting test equipment, medical instrumentation, and programmable power systems.

FAQ

What is the operating temperature range for the X9250TS24Z-2.7T1?

The X9250TS24Z-2.7T1 is rated for 0°C to +70°C operation, as confirmed by the Ordering Information table in FN8165 Rev.3.00. This commercial-grade temperature range aligns with its "TS" prefix designation and makes it suitable for indoor industrial and consumer electronics applications where ambient thermal stress is moderate. The X9250TS24Z-2.7T1 does not support the extended –40°C to +85°C industrial range offered by variants like X9250TS24I-2.7.

Does the X9250TS24Z-2.7T1 support true bipolar analog operation?

Yes, the X9250TS24Z-2.7T1 supports true bipolar analog operation with separate V+ (+2.7V to +5.5V) and V– (–2.7V to –5.5V) supply pins. This enables direct connection to op-amp rails in AC-coupled circuits, such as audio filters or precision instrumentation amplifiers, without external level-shifting components. The –2.7V minimum on V– and +2.7V minimum on V+ are explicitly specified in the Potentiometer Characteristics table on page 11 of FN8165.

How many nonvolatile data registers does the X9250TS24Z-2.7T1 provide per potentiometer?

The X9250TS24Z-2.7T1 provides four 8-bit nonvolatile Data Registers (DR0–DR3) per potentiometer, as stated in the Features section and detailed in the Device Description on page 4 of FN8165. These registers retain wiper positions for 100 years and can be transferred to the volatile Wiper Counter Register (WCR) via SPI instructions. DR0 is automatically loaded to the WCR at power-up, ensuring repeatable startup behavior for the X9250TS24Z-2.7T1.

What is the maximum SPI clock frequency supported by the X9250TS24Z-2.7T1?

The X9250TS24Z-2.7T1 supports a maximum SPI clock frequency of 2.0 MHz, as specified in the AC Timing table on page 13 of FN8165 Rev.3.00. This timing parameter applies across the full operating temperature and supply range. Exceeding 2 MHz may result in unreliable data capture on SI or invalid read data on SO, since setup/hold times (tSU = 50 ns, tH = 75 ns) are validated only up to this limit.

Is hardware write protection available on the X9250TS24Z-2.7T1?

Yes, the X9250TS24Z-2.7T1 includes a dedicated hardware write-protect (WP) pin (Pin 20). When WP is held LOW, all nonvolatile writes to the Data Registers (DR0–DR3) are disabled-even if valid SPI write commands are issued. This feature prevents accidental overwriting of factory-calibrated settings and is documented in the Pin Descriptions section (page 3) and Applications Information (page 17) of FN8165.