Renesas X9111TV14IZ-2.7

Overview

X9111TV14IZ-2.7 from Intersil is a single-supply, low-power, 1024-tap digitally controlled potentiometer (XDCP™) with SPI interface, 100kΩ end-to-end resistance, ±20% tolerance, and -40°C to +85°C industrial temperature range - used for precision gain control in voltage amplifiers and DC bias trimming in RF power amplifiers.

For engineers reviewing the X9111TV14IZ-2.7 datasheet, X9111TV14IZ-2.7 pinout, X9111TV14IZ-2.7 application, or X9111TV14IZ-2.7 equivalent, this page delivers verified technical context, validated pin functions, confirmed SPI timing constraints (fSCK ≤ 2.5 MHz), real-world use cases in sensor signal conditioning and LCD contrast adjustment, and two rigorously cross-checked alternative parts.

Technical Context

The X9111TV14IZ-2.7 implements a 1023-element CMOS resistor array with decoded 10-bit Wiper Counter Register (WCR) controlling one active switch at a time; wiper position is volatile but power-up loads DR0 nonvolatile register contents. It supports full-duplex SPI communication with CS, SCK, SI, SO, HOLD, and WP pins, and uses A0/A1 for 8-bit slave address configuration.

Four 10-bit nonvolatile Data Registers (DR0–DR3) enable storage of multiple wiper positions or system parameters; nonvolatile writes require up to 10 ms and are protected by hardware WP pin. The device operates across 2.7V–5.5V VCC, draws <3 µA standby current, and features 100-year data retention and 100,000 write cycles per register bit.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (4.4 mm wide), RoHS-compliant, M14.173 drawing. Pin 3 (NC) must remain unconnected; all other pins have defined electrical roles per functional diagram and pin description table.

Key Features

Applications

Equivalent & Alternatives

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

Compared with X9111TV14IZ-2.7, AD5241BRMZ100 trades SPI for I²C and sacrifices power-on recall, while MCP41010-I/P offers lower cost and standby current but lacks nonvolatile storage and has ¼ the resolution - making X9111TV14IZ-2.7 optimal for industrial systems needing autonomous startup and high-precision analog tuning.

Availability

X9111TV14IZ-2.7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, RF power amplifier biasing, and LCD contrast control requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for X9111TV14IZ-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 Corporation is a precision analog and power management semiconductor company, now part of Renesas Electronics, with expertise in high-reliability industrial and communications ICs.

The X9111 product line delivers digitally programmable resistive elements for calibration-critical analog subsystems - designed specifically for replacing mechanical potentiometers in harsh-environment applications demanding long-term stability and nonvolatile settings retention.

FAQ

What is the minimum VCC voltage required for reliable operation of the X9111TV14IZ-2.7?

The X9111TV14IZ-2.7 is specified for operation down to 2.7 V, with full functionality including SPI communication, wiper positioning, and nonvolatile register writes guaranteed across the entire 2.7 V–5.5 V range. Below 2.7 V, parameters such as wiper resistance, timing margins, and write endurance are not characterized - so X9111TV14IZ-2.7 must not be operated below its rated minimum supply voltage.

Does the X9111TV14IZ-2.7 retain its wiper position after power cycling?

Yes - the X9111TV14IZ-2.7 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR) on power-up. Since DR0 is nonvolatile and retains data for 100 years, X9111TV14IZ-2.7 restores the last-saved wiper setting without host intervention, enabling true "set-and-forget" calibration in standalone systems.

Can the X9111TV14IZ-2.7 be used as a 2-terminal variable resistor?

Yes - the X9111TV14IZ-2.7 supports both 3-terminal potentiometer and 2-terminal variable resistor configurations. In the latter, either RH or RL is left unconnected while RW and the remaining terminal form the adjustable resistance path, enabling use in current-setting or gain-control applications where only two terminals are needed.

How many nonvolatile write cycles does the X9111TV14IZ-2.7 support per register bit?

The X9111TV14IZ-2.7 guarantees 100,000 nonvolatile write cycles per bit in each of its four Data Registers (DR0–DR3). This endurance rating applies under recommended operating conditions and ensures reliable field recalibration over the product's operational lifetime - far exceeding typical requirements for factory trim or infrequent user adjustments.

Is the NC pin on the X9111TV14IZ-2.7 required to be grounded or left floating?

Pin 3 (NC) on the X9111TV14IZ-2.7 must be left unconnected - it is reserved for Intersil manufacturing and test purposes and has no internal connection. Neither grounding nor pulling this pin affects device operation, but connecting it risks undefined behavior or damage; therefore, X9111TV14IZ-2.7 design guidelines strictly require NC to remain open.