Renesas X9110TV14IZ-2.7

Overview

X9110TV14IZ-2.7 from Renesas (formerly Intersil) is a dual-supply, low-power, 1024-tap digitally controlled potentiometer (XDCP™) with SPI interface, 100kΩ end-to-end resistance, ±5V analog voltage range (V+/V−), and industrial temperature rating (−40°C to +85°C). It functions as a programmable three-terminal potentiometer or two-terminal variable resistor for precision analog trimming in voltage regulators, amplifier gain control, and sensor signal conditioning.

For engineers reviewing the X9110TV14IZ-2.7 datasheet, X9110TV14IZ-2.7 pinout, X9110TV14IZ-2.7 application, or X9110TV14IZ-2.7 equivalent, key selection considerations include its 2.7V–5.5V system supply range, nonvolatile data register storage (DR0–DR3), power-on recall of DR0 to wiper counter, 10-bit resolution, and 14-lead TSSOP package with dedicated analog V+/V− supplies.

Technical Context

The X9110TV14IZ-2.7 implements a monolithic CMOS resistor ladder of 1023 segments with CMOS-switched wiper access controlled by a volatile 10-bit Wiper Counter Register (WCR). Its SPI interface supports four-byte read/write instructions and two-byte transfer operations between WCR and four nonvolatile 10-bit data registers (DR0–DR3), enabling persistent storage of up to four distinct wiper positions.

It operates with independent analog supplies (V+ = +2.7V to +5.5V, V− = −5.5V to −2.7V) decoupled from the digital VCC/VSS rails, allowing bipolar analog signal handling while maintaining 5µA standby current and 100-year data retention. The device requires synchronized power-up of VCC, V+, and V− within 1ms to ensure reliable power-on recall behavior.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (RoHS-compliant, M14.173 drawing), 5.0mm × 4.4mm × 1.2mm body, 0.65mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ100 and MCP41HV51-103, the X9110TV14IZ-2.7 uniquely combines SPI interface, independent V+/V− analog supplies, four nonvolatile registers, and industrial temperature grade-making it the only option supporting self-contained, bipolar, field-reconfigurable trimming without external memory or level shifters.

Availability

X9110TV14IZ-2.7 is available at Aetrix Electronics and suitable for industrial automation, sensor calibration, and programmable power supply applications requiring stable component supply, long-term calibration integrity, and RoHS-compliant packaging.

Supply support for X9110TV14IZ-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

Renesas Electronics Corporation is a global semiconductor leader delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and IoT markets.

The X9110TV14IZ-2.7 belongs to Renesas' XDCP™ (eXternally Digitally Controlled Potentiometer) product line, engineered for precision analog parameter adjustment in systems demanding nonvolatile storage, wide analog voltage range, and robust industrial reliability.

FAQ

What is the minimum VCC voltage supported by the X9110TV14IZ-2.7?

The X9110TV14IZ-2.7 supports a minimum system supply voltage of 2.7V, as specified in its ordering suffix "-2.7" and confirmed in the Recommended Operating Conditions table. This enables compatibility with 3.3V and single-cell Li-ion battery systems. Operation below 2.7V may result in unreliable SPI communication or incomplete power-on recall of DR0 to the Wiper Counter Register. The X9110TV14IZ-2.7 maintains full functionality-including 10-bit resolution, nonvolatile register writes, and analog switching-across the entire 2.7V–5.5V VCC range.

Does the X9110TV14IZ-2.7 require external pull-up resistors on its SPI lines?

No, the X9110TV14IZ-2.7 does not require external pull-up resistors on SI, SO, SCK, or CS lines. Its SPI interface uses standard CMOS input thresholds (VIH ≥ 0.7×VCC, VIL ≤ 0.3×VCC) and features three-state SO output with internal weak pull-down (not pull-up) when deselected. External pull-ups may cause contention or excessive current draw during active SPI transactions. The X9110TV14IZ-2.7 is designed for direct connection to standard SPI masters without additional passive components, simplifying board layout and reducing BOM cost.

How does the power-on recall function work in the X9110TV14IZ-2.7?

On power-up, the X9110TV14IZ-2.7 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR), establishing the initial wiper position. This occurs after VCC, V+, and V− all stabilize within 1ms of each other. The X9110TV14IZ-2.7 does not retain the WCR value from the previous power-down state-only DR0 is nonvolatile. To ensure consistent startup behavior, users must pre-program DR0 with the desired default wiper setting using a Write Data Register command. The X9110TV14IZ-2.7 guarantees this recall function across its full −40°C to +85°C industrial temperature range.

Can the X9110TV14IZ-2.7 be used with bipolar analog signals?

Yes, the X9110TV14IZ-2.7 supports true bipolar analog operation via separate V+ and V− supply pins. When V+ = +2.7V to +5.5V and V− = −5.5V to −2.7V, the RH, RL, and RW terminals can handle signals spanning the full V− to V+ range-enabling use in op-amp offset cancellation, AC-coupled gain control, and Wheatstone bridge trimming where negative reference voltages are required. This bipolar capability is intrinsic to the X9110TV14IZ-2.7's architecture and does not require external level-shifting circuitry.

What is the maximum SPI clock frequency supported by the X9110TV14IZ-2.7?

The X9110TV14IZ-2.7 supports a maximum SPI clock frequency of 2.5MHz, as specified in the AC Timing section of its datasheet. At this rate, the minimum clock cycle time is 400ns, with minimum high/low times of 150ns each. Exceeding 2.5MHz may cause setup/hold violations on SI or invalid data capture on SO, leading to communication errors or register corruption. The X9110TV14IZ-2.7 maintains full timing compliance-including tSU, tH, and tV specifications-at 2.5MHz across its full industrial temperature range and supply voltage window.