Renesas X9400YV24Z-2.7

Overview

X9400YV24Z-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 64-tap resistor arrays per channel, SPI serial interface, 2.7V–5.5V system supply, ±5V analog rail support, and 10kΩ end-to-end resistance. It serves as a programmable voltage divider or variable resistor in precision analog signal conditioning circuits requiring nonvolatile wiper position storage and power-on recall.

For engineers reviewing the X9400YV24Z-2.7 datasheet, X9400YV24Z-2.7 pinout, X9400YV24Z-2.7 application, or X9400YV24Z-2.7 equivalent, this device supports four independent 6-bit wiper control channels with hardware write protection, low 40Ω typical wiper resistance at 5V, <1µA standby current, and 100-year data retention-critical for industrial calibration, sensor offset trimming, and embedded power management systems.

Technical Context

The X9400YV24Z-2.7 integrates four monolithic CMOS resistor arrays, each with 63 segments and 64 tap points controlled by a volatile 6-bit Wiper Counter Register (WCR). Each array features dedicated VH/RH, VL/RL, and VW/RW terminals enabling three-terminal potentiometer or two-terminal rheostat operation.

It implements full SPI-protocol compatibility-including CS, SCK, SI, SO, HOLD, and WP-with 2MHz max clock frequency, 10ms nonvolatile write cycle time, and power-up auto-recall of DR0 contents to all four WCRs. Device addressing uses A0/A1 pins to support up to four units on one bus.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4mm body width), RoHS-compliant Pb-free plus anneal finish.

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/SL, the X9400YV24Z-2.7 uniquely combines quad-channel integration, ±5V analog rail support, nonvolatile DR0 auto-recall, and hardware write protection-making it optimal for industrial and medical systems requiring guaranteed post-power-up analog state recovery without host intervention.

Availability

X9400YV24Z-2.7 is available at Aetrix Electronics and suitable for industrial sensor calibration, medical instrument gain scaling, programmable power supply feedback, and audio signal level control requiring stable component supply and long-term obsolescence management.

Supply support for X9400YV24Z-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 Corporation is a precision analog and power management semiconductor company, now part of Renesas Electronics, with expertise in high-reliability industrial and medical-grade components.

The X9400 family was designed for embedded analog tuning applications requiring nonvolatile configuration storage, low-noise performance, and robust SPI control-targeting instrumentation, test equipment, and regulated power systems.

FAQ

What is the analog voltage range supported by the X9400YV24Z-2.7?

The X9400YV24Z-2.7 supports analog supplies V+ = +2.7V to +5.5V and V− = −5.5V to −2.7V, enabling true bipolar operation up to ±5V across all four potentiometer channels. This allows direct use in AC-coupled signal paths, differential sensor interfaces, and precision instrumentation without external level-shifting circuitry. The specified range is validated per FN8189 Rev 4.00, Page 11.

Does the X9400YV24Z-2.7 retain wiper settings after power loss?

Yes-the X9400YV24Z-2.7 automatically loads the contents of Data Register 0 (DR0) into each Wiper Counter Register (WCR) on power-up, ensuring repeatable analog behavior without host initialization. DR0 values are stored nonvolatilely with 100-year retention and 100,000 write endurance. This recall function is hardware-based and does not require firmware intervention.

Can the X9400YV24Z-2.7 be used as a two-terminal variable resistor?

Yes-the X9400YV24Z-2.7 supports both three-terminal potentiometer and two-terminal variable resistor configurations. For rheostat use, connect either VH or VL to VW while leaving the other terminal unconnected or tied to a fixed potential. Each channel's 10kΩ end-to-end resistance and 40Ω typical wiper resistance ensure predictable current-limiting behavior in bias and gain-setting applications.

What is the maximum SPI clock frequency for the X9400YV24Z-2.7?

The X9400YV24Z-2.7 supports SPI clock frequencies up to 2.0 MHz, with minimum high/low times of 200 ns each. This allows fast register updates and wiper adjustments in real-time control loops. Timing parameters including tSU, tH, tV, and tDIS are fully characterized in FN8189 Rev 4.00, Page 13, and remain valid across the full −40°C to +85°C operating range.

How does hardware write protection work on the X9400YV24Z-2.7?

The WP (Write Protect) pin on the X9400YV24Z-2.7 disables all nonvolatile writes to Data Registers when held LOW. This prevents accidental overwrites of factory-calibrated or user-saved settings during normal operation or firmware updates. Volatile WCR updates remain functional, allowing dynamic wiper adjustment without compromising stored configuration integrity.