Renesas X9251TV24-2.7

Overview

X9251TV24-2.7 from Renesas Electronics is a quad digitally controlled potentiometer (XDCP™) with 256-tap resolution, SPI interface, 50kΩ end-to-end resistance, 2.7V–5.5V single-supply operation, and nonvolatile data register storage-used for precision gain control in audio amplifiers and DC bias trimming in sensor signal conditioning circuits.

For engineers reviewing the X9251TV24-2.7 datasheet, X9251TV24-2.7 pinout, X9251TV24-2.7 application, or X9251TV24-2.7 equivalent, this page delivers verified technical context, validated pin functions, confirmed operating parameters, and real-world circuit-level use cases aligned to the FN8166 Rev 7.00 specification.

Technical Context

The X9251TV24-2.7 integrates four independent DCPs on a monolithic CMOS IC, each implemented with resistor arrays and CMOS switches. Each DCP features an 8-bit volatile Wiper Counter Register (WCR) and four 8-bit nonvolatile Data Registers (DR00–DR33), enabling persistent wiper position storage and multi-setting recall at power-up.

It operates via standard SPI bus (CS, SCK, SI, SO, HOLD, WP) with device addressing via A0/A1 pins. The architecture supports direct WCR writes, DR↔WCR transfers, and real-time increment/decrement control-enabling both coarse programming and fine analog tuning without host MCU intervention.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4mm wide), RoHS-compliant, moisture sensitivity level per MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP42050-I/P, the X9251TV24-2.7 uniquely delivers four independent DCPs with hardware write protection, SPI HOLD functionality for robust multi-master environments, and guaranteed 100-year data retention-making it optimal for industrial calibration-critical systems requiring long-term stability and fault-tolerant configuration.

Availability

X9251TV24-2.7 is available at Aetrix Electronics and suitable for audio gain control, sensor offset trimming, programmable voltage regulation, and RF amplifier biasing requiring stable component supply across production lifecycles.

Supply support for X9251TV24-2.7 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

Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, and power management ICs for industrial, automotive, and infrastructure markets.

The X9251TV24-2.7 belongs to Renesas' XDCP™ family of digitally controlled potentiometers, designed specifically for replacing mechanical trimmers in precision analog signal conditioning, calibration, and programmable bias applications.

FAQ

What is the supply voltage range supported by the X9251TV24-2.7?

The X9251TV24-2.7 operates from 2.7V to 5.5V, as specified in the FN8166 Rev 7.00 datasheet. This extended low-voltage capability enables compatibility with Li-ion battery systems and 3.3V logic domains. The device maintains full 256-tap resolution and nonvolatile write functionality across the entire range, with wiper resistance varying from 300Ω (typ) at 3V to 220Ω (typ) at 5V.

How many digitally controlled potentiometers does the X9251TV24-2.7 integrate?

The X9251TV24-2.7 integrates four independent digitally controlled potentiometers (DCPs) on a single monolithic CMOS die. Each DCP has its own RH, RL, and RW pins, plus dedicated Wiper Counter Register (WCR) and four nonvolatile Data Registers (DR00–DR33), allowing fully autonomous configuration and storage per channel.

Does the X9251TV24-2.7 support hardware write protection?

Yes-the X9251TV24-2.7 includes a dedicated active-low Hardware Write Protect (WP) pin. When WP is pulled LOW, all nonvolatile writes to the Data Registers are blocked, preventing accidental corruption of calibrated settings. This feature operates independently of SPI commands and requires no firmware intervention.

What is the resolution and end-to-end resistance of each DCP in the X9251TV24-2.7?

Each DCP in the X9251TV24-2.7 provides 256-tap resolution (0.4% step size) with a nominal end-to-end resistance of 50kΩ ±20%. This value is confirmed in the Analog Characteristics table (Page 12) of FN8166 Rev 7.00 and applies uniformly across all four channels under recommended operating conditions.

Can the X9251TV24-2.7 retain wiper settings after power cycling?

Yes-the X9251TV24-2.7 automatically loads the contents of Data Register zero (DR00, DR10, DR20, DR30) into the corresponding Wiper Counter Registers (WCR0–WCR3) at power-up. With 100-year data retention and 100,000 write cycles per bit, these stored values ensure repeatable, drift-free startup behavior without host MCU initialization.