Renesas X9408YV24Z-2.7T1

Overview

X9408YV24Z-2.7T1 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 64-tap resolution per channel, 2-wire I²C-compatible interface, 2.5kΩ end-to-end resistance, and operation from 2.7V to 5.5V VCC. It integrates four independent volatile wiper counter registers and nonvolatile data registers for persistent setting storage, used in precision analog trimming, sensor calibration, and programmable gain control circuits.

For engineers reviewing the X9408YV24Z-2.7T1 datasheet, X9408YV24Z-2.7T1 pinout, X9408YV24Z-2.7T1 application, or X9408YV24Z-2.7T1 equivalent, key selection criteria include its dual-supply analog section (±2.7V to ±5.5V), hardware write-protect (WP) pin, TSSOP-24 Pb-free package, and guaranteed 100-year data retention across four 6-bit nonvolatile registers.

Technical Context

The X9408YV24Z-2.7T1 implements four independent resistor arrays-each with 63 discrete segments and 64 tap points-controlled via decoded 6-bit wiper counter registers. Its 2-wire serial interface supports standard and fast-mode I²C timing (up to 400kHz), with address inputs A0–A3 enabling up to 16 devices on one bus.

Each potentiometer features separate VH/RH, VL/RL, and VW/RW terminals, supporting three-terminal potentiometer or two-terminal variable resistor configurations. Nonvolatile writes require high-voltage activation (tWR = 5–10ms), and power-up automatically loads DR0 into the corresponding WCR.

Key Specifications

Pinout & Package

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

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 X9408YV24Z-2.7T1 uniquely supports true bipolar analog operation (±5.5V), integrates four channels in TSSOP-24, and guarantees 100-year data retention-making it optimal for industrial calibration and long-life embedded systems.

Availability

X9408YV24Z-2.7T1 is available at Aetrix Electronics and suitable for audio equipment manufacturing, sensor calibration systems, programmable power supplies, and industrial analog I/O modules requiring stable component supply and long-term obsolescence management.

Supply support for X9408YV24Z-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 (now part of Renesas Electronics) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, aerospace, and communications markets.

The X9408 family was designed for high-reliability analog trimming and calibration in environments demanding long-term data integrity, low noise, and robust digital control-particularly where mechanical potentiometers introduce maintenance, drift, or contamination risks.

FAQ

What is the absolute maximum voltage rating for the analog terminals (VH/VL/VW) of the X9408YV24Z-2.7T1?

The X9408YV24Z-2.7T1 specifies that any VH/RH, VL/RL, or VW/RW pin may operate from V− to V+, where V− is rated down to −5.5V and V+ up to +5.5V. Therefore, the absolute maximum voltage range across any analog terminal is −5.5V to +5.5V referenced to VSS. Exceeding these limits risks permanent damage to the internal CMOS switches and resistor array.

Does the X9408YV24Z-2.7T1 support true I²C bus operation including clock stretching and multi-master arbitration?

The X9408YV24Z-2.7T1 implements a 2-wire serial interface compatible with I²C electrical signaling (open-drain SDA/SCL, ACK/NACK), but it does not support clock stretching or multi-master arbitration. It operates strictly as a slave device with fixed timing parameters (e.g., tHIGH ≥600ns, tLOW ≥1300ns). Host controllers must adhere to these timing constraints and manage bus contention externally.

How does the hardware write-protect (WP) pin function during nonvolatile register writes on the X9408YV24Z-2.7T1?

When the WP pin is driven LOW, the X9408YV24Z-2.7T1 disables all nonvolatile writes to its Data Registers-even if valid Write Data Register or XFR WCR→DR commands are issued. This prevents unintended EEPROM corruption during firmware updates or power transitions. WP has no effect on volatile WCR writes or read operations.

Can the X9408YV24Z-2.7T1 be used with only a single supply (e.g., VCC = 3.3V) and grounded V−?

No. The X9408YV24Z-2.7T1 requires both V+ and V− supplies to bias its analog resistor arrays. If V− is tied to VSS (0V), then V+ must be supplied at a positive voltage (e.g., +5V) to establish the required analog rail separation. Operating with V− = 0V and V+ = 0V violates the Absolute Maximum Rating for (V+) − (V−) ≥ 12V and will disable analog functionality.

What is the wiper response time after issuing a Write Wiper Counter Register command to the X9408YV24Z-2.7T1?

After issuing a Write Wiper Counter Register command, the X9408YV24Z-2.7T1 updates the selected wiper position within tWRL = 10µs (typical), as specified in the AC Timing table. This delay reflects internal decoding and switch settling time-not propagation delay-and applies uniformly across all four potentiometers regardless of VCC or temperature within operating range.