Renesas X9258TS24IZ-2.7

Overview

X9258TS24IZ-2.7 from Intersil is a quad digital controlled potentiometer (XDCP™) with 256 taps per channel, 2-wire serial interface, ±2.7V to ±5.5V dual analog supply range, and 100kΩ end-to-end resistance. It operates from -40°C to +85°C in 24-lead SOIC and serves as precision programmable gain/offset control in analog signal conditioning circuits.

For engineers reviewing the X9258TS24IZ-2.7 datasheet, X9258TS24IZ-2.7 pinout, X9258TS24IZ-2.7 application, or X9258TS24IZ-2.7 equivalent, key selection criteria include dual-supply rail-to-rail analog operation, nonvolatile wiper position storage, 0.6% resolution, and hardware write protection via WP pin.

Technical Context

The X9258TS24IZ-2.7 implements four independent 255-segment resistor arrays with CMOS switch-based wiper control, each driven by an 8-bit volatile Wiper Counter Register (WCR) and backed by four 8-bit nonvolatile Data Registers (DR0–DR3). Power-up loads DR0 into the WCR for deterministic startup behavior.

Its 2-wire (I²C-compatible) interface supports slave addressing via A0–A3 pins, global and per-potentiometer register transfers, and real-time wiper increment/decrement via SCL edge-triggered SDA level sensing - enabling fine-grained analog tuning without host CPU intervention.

Key Specifications

Pinout & Package

24-lead SOIC (300 mil), Pb-free, RoHS-compliant package with exposed pad not electrically connected. Pin 1 marked with dot; pin 12 is VSS (system ground).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ100 and MCP42010-I/P, the X9258TS24IZ-2.7 uniquely delivers quad-channel bipolar analog control with hardware write protection and real-time wiper tuning - essential for medical, industrial, and audio systems requiring robust, maintenance-free calibration.

Availability

X9258TS24IZ-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical instrumentation, audio signal processing, and test equipment requiring stable component supply across extended temperature and dual-supply analog environments.

Supply support for X9258TS24IZ-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) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, medical, and communications applications.

The X9258 product line delivers digitally programmable analog components with nonvolatile configuration storage and robust dual-supply operation - designed specifically for systems demanding long-term calibration stability and field-reconfigurable analog signal chains.

FAQ

What is the absolute maximum voltage rating on the V+ and V− pins of the X9258TS24IZ-2.7?

The X9258TS24IZ-2.7 supports absolute maximum voltages of +10V on V+ and −10V on V−, with a maximum differential (V+ − V−) of 12V. These ratings are defined in the Absolute Maximum Ratings table on page 11 of FN8168 Rev 6.00. Operation beyond these limits risks permanent damage to the internal resistor arrays and switches.

Does the X9258TS24IZ-2.7 support true I²C bus compliance, including clock stretching and arbitration?

The X9258TS24IZ-2.7 implements a 2-wire serial interface compatible with I²C protocol timing (400kHz max clock, defined setup/hold times), but it does not support clock stretching or multi-master arbitration. It operates strictly as a slave device with fixed slave address format (0101xxxx), and acknowledges only after successful address match and command receipt.

How does the hardware write protect (WP) pin function on the X9258TS24IZ-2.7, and what happens when it is asserted?

When the WP pin is driven LOW, the X9258TS24IZ-2.7 blocks all nonvolatile writes to its Data Registers (DR0–DR3), preventing accidental modification of stored wiper positions. Volatile operations - including Wiper Counter Register updates and increment/decrement commands - remain fully functional. This ensures calibration integrity during power-up sequences or noisy system conditions.

What is the wiper response time for the X9258TS24IZ-2.7 after issuing a Write Wiper Counter Register command?

After issuing a Write Wiper Counter Register command, the X9258TS24IZ-2.7 updates the physical wiper position within 10µs (tWRL), as specified in the DCP Timing table on page 14 of FN8168 Rev 6.00. This delay applies regardless of supply ramp status, provided all three supplies (VCC, V+, V−) are stable.

Can the X9258TS24IZ-2.7 be used with only a single positive supply, or does it require dual analog supplies?

The X9258TS24IZ-2.7 requires both V+ and V− analog supplies to operate its resistor arrays - it cannot function with only a single positive supply. The datasheet specifies V+ = +2.7V to +5.5V and V− = −2.7V to −5.5V. Omitting V− or tying it to ground disables analog functionality and may cause undefined behavior or damage.