Renesas X9258TV24I-2.7

Overview

X9258TV24I-2.7 from Intersil is a quad digital controlled potentiometer (XDCP™) with 256-tap resolution per channel, dual ±2.7V to ±5.5V analog supplies (V+/V−), and 2-wire serial interface - used for precision gain/offset trimming in instrumentation amplifiers, programmable filters, and multi-channel sensor signal conditioning.

For engineers reviewing the X9258TV24I-2.7 datasheet, X9258TV24I-2.7 pinout, X9258TV24I-2.7 application, or X9258TV24I-2.7 equivalent, key selection criteria include its 50kΩ end-to-end resistance, −40°C to +85°C industrial temperature range, TSSOP-24 package, nonvolatile wiper position storage, and hardware write-protect (WP) pin functionality.

Technical Context

The X9258TV24I-2.7 integrates four independent 255-segment resistor arrays, each with an 8-bit volatile Wiper Counter Register (WCR) and four 8-bit nonvolatile Data Registers (DR0–DR3). Wiper position is set via 2-wire bus commands including direct WCR write, DR→WCR transfer, or real-time increment/decrement synchronized to SCL edges.

It operates with separate analog supplies (V+ = +2.7V to +5.5V, V− = −2.7V to −5.5V) and system supply (VCC = 2.7V to 5.5V), enabling true bipolar operation. Power-up automatically loads DR0 into each WCR, and WP pin disables nonvolatile writes when asserted low.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4mm width), RoHS-compliant, moisture sensitivity level (MSL) 3 per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ100 and MCP42050-I/SL, the X9258TV24I-2.7 uniquely delivers integrated bipolar analog supplies, hardware write protection, and power-up auto-recall - making it the only option among the three qualified for precision, field-calibratable, dual-supply analog front-ends.

Availability

X9258TV24I-2.7 is available at Aetrix Electronics and suitable for instrumentation calibration, sensor signal conditioning, programmable filter design, and industrial analog front-end development requiring stable component supply across extended temperature and voltage ranges.

Supply support for X9258TV24I-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) designs high-performance analog and mixed-signal ICs for precision power management, signal conditioning, and timing applications.

The X9258 product line delivers digitally programmable analog components optimized for calibration-critical industrial, test & measurement, and medical systems requiring nonvolatile parameter storage and robust bipolar operation.

FAQ

What is the absolute maximum voltage rating for the V+ and V− pins of the X9258TV24I-2.7?

The X9258TV24I-2.7 specifies absolute maximum ratings of +10V on V+ and −10V on V−, with a maximum differential (V+ − V−) of 12V. Operation beyond these limits risks permanent damage. The recommended operating range remains ±2.7V to ±5.5V per the -2.7 suffix designation, and the device must never see voltages outside the V− to V+ window on any VH, VL, or VW pin.

Does the X9258TV24I-2.7 support true I²C bus compliance, including clock stretching and multi-master arbitration?

The X9258TV24I-2.7 implements a 2-wire serial interface compatible with I²C protocol timing (400kHz max clock, proper start/stop/acknowledge sequences), but it does not support clock stretching or multi-master arbitration. It functions strictly as a slave device with fixed 8-bit address format (0101xxxx), and the host controller must manage bus contention and timing without relying on slave-initiated delays.

How does the hardware write-protect (WP) pin affect nonvolatile operations in the X9258TV24I-2.7?

When the WP pin is driven LOW, the X9258TV24I-2.7 blocks all nonvolatile write operations - including Write Data Register, XFR WCR→DR, and Global XFR commands - while still permitting volatile reads and writes (e.g., Read/Write WCR). This prevents accidental overwrites of calibrated settings during power transitions or firmware updates, and WP state is sampled asynchronously upon command receipt.

Can the X9258TV24I-2.7 be used with only a single supply, such as +5V on V+ and ground on V−?

No - the X9258TV24I-2.7 requires both V+ and V− supplies to be within their specified ranges (±2.7V to ±5.5V) and referenced to VSS. Connecting V− to ground violates the minimum −2.7V requirement and disables proper CMOS switch biasing in the resistor arrays, resulting in undefined wiper behavior and potential damage. Bipolar operation is mandatory.

What is the wiper response time after issuing a Write Wiper Counter Register command to the X9258TV24I-2.7?

After issuing a Write Wiper Counter Register command, the X9258TV24I-2.7 updates the physical wiper position within 10µs (tWRL), as specified in the DCP Timing table. This delay is deterministic and independent of supply ramp rate or bus speed, ensuring predictable settling for time-critical calibration loops.