Renesas X9408WV24IZ-2.7

Overview

X9408WV24IZ-2.7 from Intersil is a quad digitally controlled potentiometer (XDCP™) with 64-tap resolution per channel, 2.5 kΩ end-to-end resistance, and 2-wire (I²C-compatible) serial interface. It operates from 2.7V to 5.5V VCC and ±2.7V to ±5.5V analog supplies, delivering low-noise, low-power analog adjustment in mixed-signal systems such as audio gain control and sensor calibration circuits.

For engineers reviewing the X9408WV24IZ-2.7 datasheet, X9408WV24IZ-2.7 pinout, X9408WV24IZ-2.7 application, or X9408WV24IZ-2.7 equivalent, this device supports volatile wiper positioning with nonvolatile storage across four independent data registers, hardware write protection (WP), and precise ratiometric linearity (±0.2 MI) for stable analog tuning in industrial temperature range (–40°C to +85°C).

Technical Context

The X9408WV24IZ-2.7 integrates four monolithic CMOS resistor arrays-each with 63 discrete segments and 64 tap points-controlled by dedicated 6-bit volatile Wiper Counter Registers (WCRs). Each potentiometer features four nonvolatile 6-bit Data Registers (DR0–DR3), with DR0 automatically loaded to its WCR at power-up.

It uses a standard 2-wire bus protocol with slave address format 0101[A3:A0], supports ACK polling during nonvolatile writes (tWR = 5–10 ms), and enables real-time wiper adjustment via Increment/Decrement command synchronized to SCL edges-delivering sub-millisecond response (tWRL = 10 µs) without host CPU overhead.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (4.4 mm wide), Pb-free (RoHS compliant), industrial temperature grade (–40°C to +85°C).

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 X9408WV24IZ-2.7 uniquely delivers true bipolar analog operation, hardware write protection, and guaranteed 100-year data retention-making it the only option for robust, maintenance-free calibration in harsh industrial environments.

Availability

X9408WV24IZ-2.7 is available at Aetrix Electronics and suitable for audio signal conditioning, sensor calibration interface, programmable filter tuning, and industrial power supply trim requiring stable component supply across extended temperature and long product lifecycles.

Supply support for X9408WV24IZ-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) is a semiconductor company specializing in precision analog, power management, and interface ICs for industrial, aerospace, and communications markets.

The X9408 product line was designed for high-reliability, digitally programmable analog adjustment-targeting applications demanding nonvolatile calibration, low noise, and bipolar signal handling without microcontroller dependency.

FAQ

What is the operating temperature range for X9408WV24IZ-2.7?

The X9408WV24IZ-2.7 is rated for industrial operation from –40°C to +85°C. This range is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the FN8191 datasheet, and applies specifically to this Pb-free TSSOP variant with "I" suffix. The device maintains full specification compliance-including wiper linearity, nonvolatile write timing, and standby current-across this entire range.

Does X9408WV24IZ-2.7 support true bipolar analog operation?

Yes, X9408WV24IZ-2.7 supports true bipolar analog operation via dedicated V+ and V− pins, rated from –5.5V to –2.7V and +2.7V to +5.5V respectively. This allows the VH/VL/VW terminals to handle signals spanning the full V− to V+ range, enabling AC-coupled audio paths, differential sensor interfaces, and other bipolar applications not possible with single-supply DCPs.

How does the hardware write protect (WP) pin function on X9408WV24IZ-2.7?

The WP pin on X9408WV24IZ-2.7 is an active-low input that disables all nonvolatile writes to the four Data Registers when pulled low. When WP = low, commands like Write Data Register or XFR WCR to DR are ignored-preserving factory or field calibration data. WP has no effect on volatile WCR updates or read operations, allowing runtime adjustment while protecting stored settings.

What is the wiper response time for X9408WV24IZ-2.7 after issuing a Write Wiper Counter Register command?

The wiper response time for X9408WV24IZ-2.7 after a Write Wiper Counter Register command is tWRL = 10 µs maximum, as specified in the AC Timing table (Page 14, FN8191 Rev.4.00). This delay represents the time from instruction completion until the VW output settles to its new analog voltage-enabling rapid, deterministic tuning in closed-loop systems.

Can X9408WV24IZ-2.7 be used with standard I²C bus speeds?

Yes, X9408WV24IZ-2.7 is fully compatible with standard-mode I²C (up to 100 kHz) and fast-mode I²C (up to 400 kHz), as confirmed by its fSCL specification (400 kHz max) and timing parameters (tHIGH ≥ 600 ns, tLOW ≥ 1300 ns). Its open-drain SDA and Schmitt-triggered SCL inputs meet I²C electrical requirements, and ACK polling ensures robust communication during nonvolatile writes.