Renesas X9119TV14IZ

Overview

X9119TV14IZ from Intersil is a 1024-tap, low-power, digitally controlled potentiometer (XDCP™) with 2-wire interface, 100kΩ end-to-end resistance, ±20% tolerance, and 14-lead TSSOP package. It functions as a volatile wiper-controlled resistor array with four nonvolatile data registers, enabling programmable gain control in voltage amplifiers and DC bias adjustment in RF power amplifiers.

For engineers reviewing the X9119TV14IZ datasheet, X9119TV14IZ pinout, X9119TV14IZ application, or X9119TV14IZ equivalent, this device supports precise analog parameter tuning in industrial sensor conditioning, LCD contrast control, and audio volume circuits - with power-on recall of DR0, <3µA standby current, and 2.7V–5.5V operation.

Technical Context

The X9119TV14IZ implements a monolithic CMOS 1023-element resistor ladder with CMOS switch-controlled wiper positioning via a decoded 10-bit Wiper Counter Register (WCR). Its 2-wire interface uses open-drain SDA and active-pull SCL, supporting up to 8 devices on one bus via A2–A0 address pins.

Nonvolatile write protection is hardware-enforced via the WP pin; writes to DR0–DR3 require WP = HIGH and consume ≤10ms per register. Power-up automatically loads DR0 into the volatile WCR, ensuring repeatable startup wiper position without host intervention.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (4.4mm width), RoHS-compliant, M14.173 footprint. Pin 1, 3, and 10 are NC (no connect); all NC pins must remain unconnected.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9119TV14IZ, AD5175BRMZ-100 offers SPI compatibility but sacrifices resolution and auto-recall; MCP45HV51-103E/ST supports higher voltage operation but lacks dedicated nonvolatile storage for multiple calibration points - making X9119TV14IZ optimal for industrial systems requiring robust, repeatable analog tuning across temperature and time.

Availability

X9119TV14IZ is available at Aetrix Electronics and suitable for industrial sensor conditioning, LCD contrast control, and programmable power supply applications requiring stable component supply, long-term calibration retention, and wide-temperature operation.

Supply support for X9119TV14IZ 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 industrial, automotive, and communications markets, with ISO9001-certified manufacturing.

The X9119 product line delivers digitally programmable analog front-ends for precision trimming and dynamic bias control - targeting applications where mechanical potentiometers fail due to reliability, size, or remote configurability constraints.

FAQ

What is the default wiper position after power-up for the X9119TV14IZ?

The X9119TV14IZ automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR) at power-up. This ensures repeatable startup behavior without host initialization. DR0 must be pre-programmed with the desired default value during manufacturing or field calibration; if unprogrammed, the wiper defaults to position 0 (RW = RL).

Can the X9119TV14IZ operate reliably at 3.3V supply voltage?

Yes, the X9119TV14IZ supports VCC from 2.7V to 5.5V, making it fully compatible with 3.3V systems. At 3.3V, wiper resistance increases to 150–300Ω (vs. 40Ω at 5V), and nonvolatile write time remains ≤10ms. All logic thresholds (VIH/VIL) and timing parameters (tSU:DAT, tAA) are guaranteed across this range.

How many devices can share the same 2-wire bus with the X9119TV14IZ?

Up to eight X9119TV14IZ devices can coexist on a single 2-wire bus using unique combinations of A0, A1, and A2 pins (3-bit address). Each device responds only to its assigned 7-bit slave address (0101xxx), enabling daisy-chained configuration without address conflict or additional hardware.

Is hardware write protection mandatory for normal operation of the X9119TV14IZ?

No - the WP pin is optional. When left unconnected or pulled HIGH, nonvolatile writes to DR0–DR3 are enabled. Pulling WP LOW disables all nonvolatile register writes while allowing volatile WCR updates and reads. This provides selective protection against accidental overwrites during system runtime.

Does the X9119TV14IZ support true 3-terminal potentiometer operation?

Yes, the X9119TV14IZ supports both 3-terminal potentiometer (RH–RW–RL) and 2-terminal variable resistor (RH–RW or RW–RL) configurations. In 3-terminal mode, it delivers ratiometric voltage division with ±1.5 MI absolute linearity and 20 ppm/°C ratiometric tempco - validated per datasheet Figure 13 and Analog Specifications table.