Renesas X9119TV14I-2.7

Overview

X9119TV14I-2.7 from Intersil is a 10-bit digitally controlled potentiometer (XDCP™) with 1024 taps, 100kΩ end-to-end resistance, 2-wire (I²C-compatible) interface, and operation from 2.7V to 5.5V. It integrates volatile wiper counter register (WCR) and four nonvolatile data registers (DR0–DR3), enabling programmable resistor adjustment in analog signal conditioning circuits such as voltage amplifier gain control and DC bias trimming.

For engineers reviewing the X9119TV14I-2.7 datasheet, X9119TV14I-2.7 pinout, X9119TV14I-2.7 application, or X9119TV14I-2.7 equivalent, key selection criteria include its 2.7V minimum supply, 14-lead TSSOP package, 40Ω typical wiper resistance at 5V, power-on recall from DR0, and hardware write-protect (WP) functionality for register integrity.

Technical Context

The X9119TV14I-2.7 implements a monolithic CMOS resistor ladder of 1023 series elements with CMOS-switched wiper access, decoded from a 10-bit WCR. Its 2-wire interface supports read/write/transfer operations to both volatile and nonvolatile registers, with ACK polling for nonvolatile write completion.

Power-up behavior loads DR0 into the WCR, ensuring deterministic wiper position on reset. The WP pin disables nonvolatile writes when asserted low, while A0–A2 pins configure slave address for multi-device bus operation - supporting up to eight devices on a shared I²C bus.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (4.4mm width), RoHS-compliant, moisture sensitivity level (MSL) per Intersil documentation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5170BRMZ-100 and MCP45HV51-103, the X9119TV14I-2.7 uniquely combines I²C compatibility, hardware write protection, four nonvolatile registers, and 40Ω wiper resistance - making it optimal for precision, field-calibratable, low-power analog control where deterministic power-up behavior is required.

Availability

X9119TV14I-2.7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, programmable power supplies, audio equipment, and embedded calibration systems requiring stable component supply and long-term parameter retention.

Supply support for X9119TV14I-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) designs high-performance analog and mixed-signal ICs for precision power management, sensing, and interface applications.

The X9119 product line delivers digitally programmable resistance solutions targeting analog system calibration, trimming, and dynamic gain control - with emphasis on nonvolatile storage, low power, and robust I²C integration.

FAQ

What is the minimum operating voltage for the X9119TV14I-2.7?

The X9119TV14I-2.7 operates from 2.7V to 5.5V, as specified in the ordering information and absolute maximum ratings section of the FN8162 datasheet. This 2.7V lower limit enables compatibility with single-cell Li-ion and 3.3V system rails without level-shifting.

Does the X9119TV14I-2.7 retain wiper position after power loss?

The X9119TV14I-2.7 does not retain the volatile wiper counter register (WCR) value after power loss. However, it automatically loads the contents of nonvolatile data register DR0 into the WCR on power-up, ensuring repeatable startup behavior if DR0 is pre-programmed.

How many devices can share the same I²C bus with the X9119TV14I-2.7?

Up to eight X9119TV14I-2.7 devices can share one I²C bus, as the A0, A1, and A2 pins provide three address bits, yielding eight unique 7-bit slave addresses (0101xxx binary). Each device must have a distinct combination of A0–A2 connections to VSS or VCC.

What is the purpose of the WP pin on the X9119TV14I-2.7?

The WP (Write Protect) pin on the X9119TV14I-2.7 disables all nonvolatile writes to the DR0–DR3 registers when pulled LOW. This prevents accidental corruption of calibrated settings during system operation or firmware updates, while still allowing volatile WCR adjustments.

Can the X9119TV14I-2.7 be used as a 2-terminal variable resistor?

Yes, the X9119TV14I-2.7 supports both 3-terminal potentiometer and 2-terminal variable resistor configurations. In 2-terminal mode, either RH or RL is tied to RW, effectively creating an adjustable resistance between RW and the remaining terminal - commonly used in current-setting or gain-control applications.