Renesas X9118TV14Z

Overview

X9118TV14Z from Intersil is a single digitally controlled potentiometer (XDCP™) with 1024-tap resolution, 100kΩ end-to-end resistance, and 2-wire serial interface. It operates from 2.7V to 5.5V system supply and supports analog voltage rails from –5V to +5V. Used as a programmable voltage divider or variable resistor in precision analog signal conditioning circuits.

For engineers reviewing the X9118TV14Z datasheet, X9118TV14Z pinout, X9118TV14Z application, or X9118TV14Z equivalent, this page delivers verified specifications, validated pin functions, confirmed operating ranges (0°C to +70°C), and real-world use cases for contrast control, sensor trimming, and regulator feedback adjustment - all tied explicitly to the X9118TV14Z-2.7 variant.

Technical Context

The X9118TV14Z implements a 1023-element CMOS resistor array with decoded 10-bit wiper counter register (WCR) controlling one of 1024 switches. Its volatile WCR loads default position from non-volatile Data Register 0 (DR0) at power-up. Analog terminals (V+, V−) independently bias the potentiometer switches, enabling operation across ±5V rails while digital logic runs on 2.7–5.5V VCC.

Communication uses standard 2-wire bus with open-drain SDA and active-high SCL, supporting up to four devices via A1/A0 address pins. Hardware write protection (WP) disables nonvolatile writes to DR0–DR3. All four 10-bit data registers retain settings for 100 years and withstand 100,000 write cycles per bit.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (Pb-free, RoHS compliant, M14.173 drawing).

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 X9118TV14Z uniquely combines 10-bit resolution, independent ±5V analog rails, four nonvolatile registers, and 2-wire compatibility - making it optimal for precision bipolar trimming in space-constrained, low-power embedded systems.

Availability

X9118TV14Z is available at Aetrix Electronics and suitable for LCD contrast control, sensor signal conditioning, voltage regulator feedback adjustment, and audio volume control requiring stable component supply across commercial temperature range (0°C to +70°C).

Supply support for X9118TV14Z 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, signal conditioning, and interface applications.

The X9118TV14Z belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered specifically for replacing mechanical trimmers in calibration-critical analog circuits where programmability, nonvolatility, and bipolar signal handling are essential.

FAQ

What is the operating temperature range for the X9118TV14Z?

The X9118TV14Z is rated for commercial operation from 0°C to +70°C, as confirmed in the ordering information table and recommended operating conditions section of the FN8161 datasheet. This distinguishes it from the industrial-grade X9118TV14IZ variant (–40°C to +85°C). The X9118TV14Z maintains full specification compliance-including 100kΩ resistance tolerance, 10-bit linearity, and 2-wire timing-across this range.

Does the X9118TV14Z support true bipolar analog operation?

Yes, the X9118TV14Z supports true bipolar analog operation via separate V+ and V− supply pins, rated from –5V to +5V. This allows RH and RL terminals to swing across the full ±5V range while maintaining switch integrity and wiper linearity. Unlike single-supply digital pots, the X9118TV14Z does not require level-shifting circuitry when interfacing with bipolar op-amps or sensor bridges.

How many nonvolatile memory locations does the X9118TV14Z provide?

The X9118TV14Z provides four independent 10-bit nonvolatile data registers (DR0–DR3), each capable of storing a full wiper position (0–1023). These registers retain data for 100 years and withstand 100,000 write cycles per bit. DR0 is automatically loaded into the volatile wiper counter register (WCR) at power-up, ensuring repeatable startup behavior without host intervention.

What is the maximum clock frequency supported by the X9118TV14Z 2-wire interface?

The X9118TV14Z supports a maximum 2-wire serial clock (SCL) frequency of 400kHz, as specified in the AC timing parameters table (page 12 of FN8161 Rev 5.00). This aligns with standard fast-mode I²C operation and enables efficient register reads/writes while maintaining robust noise immunity through defined setup/hold times and ACK polling capability during nonvolatile writes.

Can the X9118TV14Z be used as a two-terminal variable resistor?

Yes, the X9118TV14Z can be configured as a two-terminal variable resistor by connecting either RH or RL to the wiper (RW) pin, effectively creating a digitally adjustable resistance between RW and the remaining terminal. This configuration is explicitly supported in the "Basic Configurations" section (page 14) and maintains the same 100kΩ end-to-end resistance and 10-bit resolution as the three-terminal potentiometer mode.