Renesas X9111TV14Z-2.7

Overview

X9111TV14Z-2.7 from Intersil is a single-supply, low-power, 1024-tap digitally controlled potentiometer (XDCP™) with SPI interface, 100kΩ end-to-end resistance, 2.7V–5.5V operation, and 14-lead TSSOP package. It functions as a 3-terminal potentiometer or 2-terminal variable resistor for precision analog trimming in voltage regulators, amplifier gain control, and sensor signal conditioning.

For engineers reviewing the X9111TV14Z-2.7 datasheet, X9111TV14Z-2.7 pinout, X9111TV14Z-2.7 application, or X9111TV14Z-2.7 equivalent, this page delivers verified electrical parameters, SPI timing constraints, nonvolatile register behavior, wiper response latency, and real-world circuit integration guidance for industrial and commercial embedded systems.

Technical Context

The X9111TV14Z-2.7 implements a 1023-element resistive ladder with CMOS switches controlled by a volatile 10-bit Wiper Counter Register (WCR), enabling precise 10-bit resolution (0–1023). Its SPI interface supports four-byte read/write operations and two-byte transfer instructions between WCR and four nonvolatile 10-bit Data Registers (DR0–DR3).

Power-on recall loads DR0 into WCR; hardware write protection (WP pin) blocks nonvolatile writes. Standby current is <3µA, wiper resistance is 40Ω typical at 5V (150–300Ω at 3V), and high-voltage write cycles complete in 5–10ms with 100-year data retention and 100,000 endurance cycles per bit.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (4.4mm width), RoHS-compliant, moisture sensitivity level per M14.173 drawing.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5241BRMZ10 and MCP41010-I/P, the X9111TV14Z-2.7 uniquely combines SPI interface, 10-bit resolution, four nonvolatile registers, and automatic power-up recall-enabling self-initializing, high-precision analog tuning without external memory or host intervention.

Availability

X9111TV14Z-2.7 is available at Aetrix Electronics and suitable for voltage regulator trimming, audio gain control, sensor calibration, and industrial instrumentation requiring stable component supply and long-term parameter retention.

Supply support for X9111TV14Z-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 IC manufacturer, now part of Renesas Electronics, with expertise in high-reliability industrial and automotive solutions.

The X9111 product line delivers digitally controlled potentiometers optimized for calibration-critical applications including medical instrumentation, test equipment, and programmable power supplies-emphasizing nonvolatile storage, low power, and robust SPI interoperability.

FAQ

What is the minimum V_CC required for reliable operation of the X9111TV14Z-2.7?

The X9111TV14Z-2.7 is specified for operation from 2.7V to 5.5V. Below 2.7V, internal logic may not initialize correctly, SPI communication becomes unreliable, and wiper position accuracy degrades. The datasheet confirms guaranteed functionality only within this range, and the "-2.7" suffix explicitly denotes this low-voltage variant. Always maintain V_CC ≥2.7V for full specification compliance in the X9111TV14Z-2.7.

Does the X9111TV14Z-2.7 retain its wiper position after power cycling?

Yes-the X9111TV14Z-2.7 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR) on power-up. This power-on recall feature ensures the X9111TV14Z-2.7 resumes operation at a known, user-programmed wiper position without host intervention. DR0 must be written prior to power-down to preserve the desired state in the X9111TV14Z-2.7.

Can the X9111TV14Z-2.7 be used as a 2-terminal variable resistor?

Yes-the X9111TV14Z-2.7 supports both 3-terminal potentiometer (RH–RW–RL) and 2-terminal variable resistor (e.g., RW–RL or RH–RW) configurations. In 2-terminal mode, it replaces mechanical rheostats for gain control, current limiting, or bias adjustment. Wiper resistance (40Ω typ. at 5V) and end-to-end tolerance (±20%) directly impact minimum resistance and linearity in the X9111TV14Z-2.7.

How does the HOLD pin function during SPI communication with the X9111TV14Z-2.7?

The HOLD pin pauses an active SPI transaction without resetting the command sequence. To pause, HOLD must be pulled LOW while SCK is LOW; to resume, HOLD is returned HIGH while SCK remains LOW. This allows the host MCU to service higher-priority interrupts mid-transfer. If unused, HOLD must be held HIGH continuously. This behavior is fully documented for the X9111TV14Z-2.7 in the functional description and timing diagrams.

What is the maximum allowable wiper current for the X9111TV14Z-2.7?

The absolute maximum wiper current (I_W) for the X9111TV14Z-2.7 is ±3mA, as specified in the Analog Characteristics table. Exceeding this risks permanent damage to the internal CMOS switches or resistor ladder. For safe operation, ensure voltage across RH–RL and current through RW remain within linear region limits-especially critical when using the X9111TV14Z-2.7 in current-sensing or high-gain feedback paths.