Renesas X9118TV14Z-2.7

Overview

X9118TV14Z-2.7 from Intersil is a digitally controlled potentiometer (XDCP™) implemented as a monolithic CMOS IC with 1024-tap resistor array, 2-wire serial interface, and non-volatile data registers. It functions as a programmable three-terminal potentiometer or two-terminal variable resistor, operating from 2.7V to 5.5V system supply and supporting analog voltage rails from –5V to +5V. It delivers 100kΩ end-to-end resistance, 40Ω typical wiper resistance at 5V, and <15µA standby current - used in precision gain control, DC bias trimming, and sensor signal conditioning circuits.

For engineers reviewing the X9118TV14Z-2.7 datasheet, X9118TV14Z-2.7 pinout, X9118TV14Z-2.7 application, or X9118TV14Z-2.7 equivalent, key selection criteria include its 2.7–5.5V VCC range, –5V to +5V analog rail tolerance, 10-bit resolution, volatile Wiper Counter Register with power-up recall from DR0, and hardware write-protect (WP) functionality for register integrity.

Technical Context

The X9118TV14Z-2.7 integrates a 1023-element resistor ladder with CMOS transmission-gate switches controlled by a 10-bit Wiper Counter Register (WCR), enabling precise wiper positioning across 1024 taps. Its 2-wire (I²C-compatible) interface supports read/write/transfer operations to four non-volatile data registers (DR0–DR3) and the volatile WCR, with ACK polling for nonvolatile write completion.

Power-on behavior loads DR0 into the WCR, ensuring repeatable startup wiper position. Analog operation is decoupled from digital supply via separate V+/V− pins, allowing bipolar signal handling (–5V to +5V) independent of the 2.7–5.5V VCC domain. The WP pin disables nonvolatile writes when asserted low, protecting stored calibration data.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (Pb-free, RoHS compliant), M14.173 drawing, thermal resistance θ_JA = 92°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5170BRMZ-100 and MCP41HV51-104, the X9118TV14Z-2.7 uniquely supports true bipolar analog operation (–5V to +5V) with dedicated V+/V− pins, four non-volatile registers for multi-point calibration, and hardware write protection - making it optimal for industrial sensor conditioning and precision analog front-ends requiring long-term stability and robust configuration security.

Availability

X9118TV14Z-2.7 is available at Aetrix Electronics and suitable for precision analog trimming, sensor calibration, and programmable gain control applications requiring stable component supply across industrial temperature ranges (0°C to +70°C) and long-lifecycle reliability.

Supply support for X9118TV14Z-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 manufacturer specializing in precision analog, power management, and interface ICs for industrial, communications, and computing markets.

The X9118 product line delivers digitally controlled potentiometers optimized for high-reliability analog parameter adjustment in harsh environments, emphasizing nonvolatile storage, wide analog voltage tolerance, and robust serial interface integrity.

FAQ

What is the absolute maximum analog voltage range supported by the X9118TV14Z-2.7?

The X9118TV14Z-2.7 supports an absolute analog voltage range of –5.5V to +5.5V on V+ and V− pins, with RH/RL voltages constrained between V− and V+. This enables direct interfacing with bipolar op-amps and sensors without external level-shifting circuitry. The device maintains this rating across its full operating temperature range.

How does the power-on recall function work in the X9118TV14Z-2.7?

On power-up, the X9118TV14Z-2.7 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR), establishing a known wiper position without host intervention. This behavior is guaranteed provided VCC, V+, and V− reach stable values within 1ms of each other, as specified in the power sequencing requirements.

Can the X9118TV14Z-2.7 be used as a two-terminal variable resistor?

Yes, the X9118TV14Z-2.7 can operate as a two-terminal variable resistor by connecting either RH or RL to RW, leaving the unused terminal open. In this mode, resistance between RW and the connected terminal varies from near-zero to 100kΩ in 1024 discrete steps, maintaining the same 10-bit resolution and nonvolatile storage capabilities as in three-terminal potentiometer mode.

What is the purpose of the WP pin on the X9118TV14Z-2.7?

The WP (Write Protect) pin on the X9118TV14Z-2.7 is a hardware-controlled input that, when driven LOW, disables all nonvolatile write operations to the four data registers (DR0–DR3). This prevents accidental overwriting of calibrated settings during firmware updates or transient noise events, enhancing system reliability in mission-critical analog configurations.

Does the X9118TV14Z-2.7 require external pull-up resistors on its 2-wire bus lines?

Yes, the X9118TV14Z-2.7 requires external pull-up resistors on both SDA and SCL lines due to its open-drain SDA output and passive SCL input. Recommended values are 2kΩ to 2.5kΩ for standard-mode (100kHz) or fast-mode (400kHz) I²C operation, selected based on bus capacitance and required rise/fall times as defined in the AC timing specifications.