Renesas X9400WV24IZ-2.7T1

Overview

X9400WV24IZ-2.7T1 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 64-tap resolution per channel, SPI serial interface, 2.7V–5.5V system supply, ±5V analog rail support, and 10kΩ end-to-end resistance. It integrates four independent resistor arrays for precision analog control in voltage divider, gain-setting, and offset adjustment circuits.

For engineers reviewing the X9400WV24IZ-2.7T1 datasheet, X9400WV24IZ-2.7T1 pinout, X9400WV24IZ-2.7T1 application, or X9400WV24IZ-2.7T1 equivalent, this device delivers nonvolatile wiper position storage, <1µA standby current, and TSSOP-24 packaging optimized for space-constrained industrial and embedded signal conditioning designs.

Technical Context

The X9400WV24IZ-2.7T1 implements four 63-segment resistor arrays with CMOS switch-controlled wipers, each driven by a volatile 6-bit Wiper Counter Register (WCR) and backed by four 6-bit nonvolatile Data Registers (DR0–DR3). Power-on recall loads DR0 into the WCR for deterministic startup behavior.

Its SPI interface supports read/write/transfer operations at up to 2MHz clock rate, with hardware write protection (WP), chip select (CS), hold (HOLD), and dual device address pins (A0/A1) enabling multi-device bus configuration. Analog terminals (VH/VL/VW) operate across –5.5V to +5.5V rails independent of 2.7V–5.5V VCC.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4mm 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/P, the X9400WV24IZ-2.7T1 uniquely combines quad-channel density, SPI compatibility, 2.7V–5.5V VCC, and fully isolated ±5.5V analog rails-enabling single-chip bipolar signal conditioning where alternatives require supplemental level-shifting or multiple ICs.

Availability

X9400WV24IZ-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supplies, medical instrument offset adjustment, and audio signal level control requiring stable component supply and long-term calibration integrity.

Supply support for X9400WV24IZ-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 Corporation is a precision analog and power management semiconductor company, now part of Renesas Electronics, with expertise in high-reliability industrial and infrastructure solutions.

The X9400 product line was designed for digitally programmable analog signal conditioning in environments demanding nonvolatile calibration, low power, and bipolar voltage handling-targeting test equipment, medical devices, and industrial control systems.

FAQ

What is the maximum SPI clock frequency supported by the X9400WV24IZ-2.7T1?

The X9400WV24IZ-2.7T1 supports an SPI clock frequency of up to 2.0 MHz, as specified in its AC timing characteristics. This allows rapid wiper updates-critical for real-time gain control or dynamic calibration loops-while maintaining robust noise immunity due to tight setup/hold time requirements (50 ns).

Does the X9400WV24IZ-2.7T1 support true bipolar analog operation?

Yes, the X9400WV24IZ-2.7T1 supports true bipolar analog operation via dedicated V+ and V– pins rated from –5.5V to +5.5V. This enables direct connection to op-amps and sensors operating across negative and positive rails without level-shifting circuitry-unlike many competing digital potentiometers limited to unipolar VSS-to-VDD ranges.

How does power-on wiper recall work in the X9400WV24IZ-2.7T1?

On power-up, the X9400WV24IZ-2.7T1 automatically loads the contents of Data Register 0 (DR0) into each channel's volatile Wiper Counter Register (WCR), restoring the last-saved wiper position. This occurs only after VCC, V+, and V– all reach stable levels-requiring proper power sequencing to ensure reliable recall behavior.

Can the X9400WV24IZ-2.7T1 be used as a two-terminal variable resistor?

Yes, the X9400WV24IZ-2.7T1 can be configured as a two-terminal variable resistor by connecting either VH or VL to the wiper (VW) and using the remaining terminal as the adjustable node. Its 40Ω typical wiper resistance at 5V and 64-tap resolution make it suitable for current-limiting, bias adjustment, and programmable load applications.

What is the endurance rating for nonvolatile writes to the X9400WV24IZ-2.7T1 data registers?

The X9400WV24IZ-2.7T1 guarantees 100,000 data changes per bit per register for its nonvolatile Data Registers (DR0–DR3). Each write cycle takes up to 10 ms to complete, and the internal Write-In-Process (WIP) bit can be polled via SPI to confirm completion before issuing subsequent commands.