Renesas X9119TV14-2.7T1

Overview

X9119TV14-2.7T1 from Intersil is a 1024-tap, low-power, digitally controlled potentiometer (XDCP™) with 2-wire serial interface, 100kΩ end-to-end resistance, 2.7V–5.5V supply range, and volatile wiper counter register with four nonvolatile data registers. It functions as a 3-terminal potentiometer or 2-terminal variable resistor for precision analog trimming in voltage regulators, audio gain control, and sensor signal conditioning.

For engineers reviewing the X9119TV14-2.7T1 datasheet, X9119TV14-2.7T1 pinout, X9119TV14-2.7T1 application, or X9119TV14-2.7T1 equivalent, this device supports I²C-compatible 2-wire communication, power-on recall from DR0, <3µA standby current, and 100-year data retention - critical for embedded systems requiring stable, field-programmable resistance without mechanical wear.

Technical Context

The X9119TV14-2.7T1 implements a monolithic CMOS resistor array of 1023 series-connected elements with CMOS-switched wiper taps, decoded from a 10-bit volatile Wiper Counter Register (WCR). Its 2-wire interface uses open-drain SDA and active-pull SCL, supporting up to 400kHz clock frequency and ACK polling during nonvolatile writes.

Four 10-bit nonvolatile data registers (DR0–DR3) store wiper positions or system parameters; DR0 loads automatically into WCR at power-up. Hardware write protection (WP pin) disables nonvolatile register writes when asserted low, and device addressing uses A0–A2 pins for up to eight devices on one 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 MCP41HV51-103, the X9119TV14-2.7T1 uniquely combines 10-bit resolution, four nonvolatile data registers, automatic DR0 power-on recall, and true 2-wire compatibility - making it optimal for embedded systems requiring field-reprogrammable, self-restoring analog calibration.

Availability

X9119TV14-2.7T1 is available at Aetrix Electronics and suitable for voltage regulator trimming, audio gain control, sensor offset calibration, and active filter tuning requiring stable component supply and long-term parameter retention.

Supply support for X9119TV14-2.7T1 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) designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.

The X9119 family delivers digitally programmable resistance for analog system calibration - targeting embedded instrumentation, industrial controls, and consumer electronics where mechanical potentiometers fail due to wear or environmental stress.

FAQ

What is the minimum supply voltage for reliable operation of the X9119TV14-2.7T1?

The X9119TV14-2.7T1 operates reliably from 2.7V to 5.5V. At 2.7V, wiper resistance increases to 150–300Ω (vs. 40Ω at 5V), and analog performance remains within datasheet specifications including linearity and noise. The "-2.7" suffix explicitly denotes this extended low-voltage capability.

Does the X9119TV14-2.7T1 support true I²C protocol compliance?

The X9119TV14-2.7T1 implements a 2-wire serial interface compatible with I²C timing requirements (400kHz max clock, START/STOP, ACK), but does not include clock stretching or 10-bit addressing. It uses standard I²C-level signaling and responds to 7-bit addresses formed by A0–A2 pins - sufficient for most microcontroller-based implementations.

How does power-on recall work in the X9119TV14-2.7T1?

At power-up, the X9119TV14-2.7T1 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR), positioning the wiper accordingly. This occurs within 1ms after VCC stabilizes and requires no host intervention - ensuring repeatable startup behavior across cycles.

Can the X9119TV14-2.7T1 be used as a 2-terminal variable resistor?

Yes. The X9119TV14-2.7T1 supports both 3-terminal potentiometer (RH–RW–RL) and 2-terminal variable resistor (e.g., RH–RW or RW–RL) configurations. In 2-terminal mode, it replaces mechanical trimmers in gain-setting, biasing, or attenuation circuits while retaining digital control and nonvolatile storage.

What is the maximum wiper current rating for the X9119TV14-2.7T1?

The X9119TV14-2.7T1 specifies ±3mA maximum wiper current (IW). Exceeding this may cause localized heating, resistance drift, or accelerated wear of the internal CMOS switches. For applications requiring higher current, external buffering (e.g., op-amp follower) is recommended to isolate the X9119TV14-2.7T1 from load demands.