Renesas X9250TS24I-2.7T1

Overview

X9250TS24I-2.7T1 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 resistor arrays in a single 24-lead SOIC package, supports nonvolatile wiper position storage, and operates across −40°C to +85°C for industrial-grade signal conditioning and bias adjustment.

For engineers reviewing the X9250TS24I-2.7T1 datasheet, X9250TS24I-2.7T1 pinout, X9250TS24I-2.7T1 application, or X9250TS24I-2.7T1 equivalent, key selection criteria include its 2.7V–5.5V VCC range, ±2.7V to ±5.5V analog rail support, 40Ω typical wiper resistance at 5V, 100-year data retention, and SPI-compatible control with hardware write protection (WP) and HOLD functionality.

Technical Context

The X9250TS24I-2.7T1 implements 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). Wiper position is updated via SPI instructions including direct WCR write, DR-to-WCR transfer, and increment/decrement modes with real-time SCK-synchronized stepping.

It supports true bipolar analog operation with separate V+, V−, and VCC supplies, enabling use as a three-terminal potentiometer or two-terminal variable resistor in AC-coupled or dual-supply circuits. The device features hardware write protection (WP), device addressing (A0/A1), and HOLD functionality for pausing ongoing SPI transfers without reset.

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 AD5242BRUZ100 and MCP42050-I/P, the X9250TS24I-2.7T1 uniquely supports true bipolar analog operation and retains calibration settings for 100 years without backup power-critical for industrial and medical systems requiring long-term accuracy and zero-maintenance operation.

Availability

X9250TS24I-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supplies, medical instrumentation, and audio signal processing requiring stable component supply, long-term calibration integrity, and RoHS-compliant packaging.

Supply support for X9250TS24I-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 product line was designed to replace mechanical potentiometers in high-reliability, digitally programmable analog systems-emphasizing nonvolatile memory, bipolar operation, and SPI compatibility for embedded calibration and tuning.

FAQ

What is the supply voltage range for the X9250TS24I-2.7T1 analog section?

The X9250TS24I-2.7T1 supports V+ = +2.7V to +5.5V and V− = −2.7V to −5.5V, enabling true bipolar analog operation. This allows the wiper to swing fully between rails in AC-coupled or dual-supply circuits-unlike single-supply digital potentiometers. The "-2.7" suffix explicitly confirms minimum analog rail compliance down to ±2.7V.

Does the X9250TS24I-2.7T1 retain wiper settings after power loss?

Yes. The X9250TS24I-2.7T1 stores wiper positions in nonvolatile Data Registers (DR0–DR3) with 100-year data retention. Upon power-up, DR0 automatically loads into the Wiper Counter Register (WCR), restoring the last-saved setting without host intervention-critical for unattended or battery-less systems.

How many independent potentiometers does the X9250TS24I-2.7T1 integrate?

The X9250TS24I-2.7T1 integrates four completely independent digitally controlled potentiometers, each with its own 256-tap resistor array, Wiper Counter Register, and four nonvolatile Data Registers. All four channels share the same SPI interface but operate autonomously-ideal for multi-parameter analog tuning.

What is the maximum SPI clock frequency supported by the X9250TS24I-2.7T1?

The X9250TS24I-2.7T1 supports SPI clock frequencies up to 2.0 MHz, with minimum cycle time of 500 ns, high/low pulse widths of 200 ns each, and strict setup/hold timing requirements (tSU = 50 ns, tH = 75 ns). This enables fast host-controlled updates while maintaining robust noise immunity in industrial environments.

Can the X9250TS24I-2.7T1 be used in a single-supply system?

Yes. While optimized for bipolar operation, the X9250TS24I-2.7T1 functions in single-supply systems by tying V− to GND and using V+ as the positive analog rail. In this configuration, it behaves as a standard 0–V+ digital potentiometer with full 256-step resolution and nonvolatile storage-verified in the datasheet's recommended operating conditions.