Renesas X9119TV14-2.7

Overview

X9119TV14-2.7 from Intersil is a 10-bit digitally controlled potentiometer (XDCP™) with 1024 taps, 100kΩ end-to-end resistance, 2.7V–5.5V supply range, and 2-wire serial interface. It functions as a volatile wiper-controlled resistor array with four nonvolatile data registers, used for precision gain/offset trimming in analog signal chains and programmable reference generation.

For engineers reviewing the X9119TV14-2.7 datasheet, X9119TV14-2.7 pinout, X9119TV14-2.7 application, or X9119TV14-2.7 equivalent, key selection criteria include its 2.7V minimum VCC operation, 40Ω typical wiper resistance at 5V, power-on recall from DR0, <3µA standby current, and TSSOP-14 package compatibility with space-constrained industrial and consumer PCB layouts.

Technical Context

The X9119TV14-2.7 implements a monolithic CMOS resistor ladder of 1023 segments with CMOS-switched wiper access, decoded from a 10-bit volatile Wiper Counter Register (WCR). Its 2-wire interface supports read/write/transfer operations to WCR and four 10-bit nonvolatile data registers (DR0–DR3), with hardware write protection via the WP pin.

Power-up behavior loads DR0 into WCR automatically; nonvolatile writes require high-voltage timing (5–10ms) and ACK polling. The device operates across 0°C to +70°C, supports I²C-compatible timing up to 400kHz, and maintains ±1.5 MI absolute linearity and 300ppm/°C RTOTAL temperature coefficient.

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 AD5170BRMZ-100 and MCP41010-I/P, the X9119TV14-2.7 delivers superior 10-bit resolution, guaranteed power-on state recovery, and four independent nonvolatile settings-making it optimal for calibration-critical, maintenance-free analog subsystems.

Availability

X9119TV14-2.7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, medical instrument calibration, and consumer audio systems requiring stable component supply across extended production lifecycles.

Supply support for X9119TV14-2.7 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) designs high-performance analog and mixed-signal ICs for precision signal conditioning, power management, and interface applications.

The X9119 product line delivers digitally programmable analog front-ends for calibration, trimming, and dynamic parameter adjustment in industrial, medical, and communications equipment.

FAQ

What is the minimum operating voltage for the X9119TV14-2.7?

The X9119TV14-2.7 operates down to 2.7V, as specified in its ordering suffix "-2.7" and confirmed in the Absolute Maximum Ratings table. This allows direct integration into 3.3V systems and battery-powered devices where supply headroom is constrained. Operation below 2.7V is not guaranteed and may result in unreliable wiper positioning or interface communication failure. The X9119TV14-2.7 maintains full functionality-including 2-wire interface timing, wiper response (<10µs), and nonvolatile register access-across the entire 2.7V–5.5V range.

How does the X9119TV14-2.7 handle power-up initialization?

The X9119TV14-2.7 automatically loads the contents of Data Register 0 (DR0) into the volatile Wiper Counter Register (WCR) on power-up, ensuring a known, repeatable wiper position without host intervention. This power-on recall occurs within 1ms after VCC stabilizes, as defined by tPUR. The X9119TV14-2.7 retains DR0's value nonvolatilely for 100 years, making it ideal for applications requiring fail-safe startup states-such as medical sensors or industrial controllers-where manual recalibration after power loss is unacceptable.

Can the X9119TV14-2.7 be used as a 2-terminal variable resistor?

Yes, the X9119TV14-2.7 supports both 3-terminal potentiometer and 2-terminal variable resistor configurations. In 2-terminal mode, RH and RW or RL and RW are used, effectively creating an adjustable resistance between those pins. The device's 40Ω typical wiper resistance at 5V and ±3mA wiper current rating ensure minimal insertion error and reliable operation in current-setting applications like LED biasing or transconductance control. Its 100kΩ end-to-end resistance provides a wide tuning range while maintaining low thermal noise.

What is the purpose of the WP pin on the X9119TV14-2.7?

The WP (Write Protect) pin on the X9119TV14-2.7 disables nonvolatile writes to the four data registers (DR0–DR3) when held LOW, preventing accidental or unauthorized modification of stored calibration values. This hardware-level protection remains active regardless of 2-wire command sequence, offering robust security for field-deployed systems. Volatile wiper adjustments via WCR remain fully functional under WP assertion, enabling runtime tuning without risk to persistent settings. The X9119TV14-2.7 requires WP HIGH to execute XFR or Write Data Register instructions.

Does the X9119TV14-2.7 support standard I²C timing?

The X9119TV14-2.7 is compatible with standard I²C timing at up to 400kHz clock frequency, meeting tHIGH ≥600ns, tLOW ≥1300ns, and tSU:STA ≥600ns requirements. It uses open-drain SDA and input-only SCL, with ACK polling support for nonvolatile write completion detection. While not a full I²C-compliant slave (e.g., no 7-bit address arbitration), the X9119TV14-2.7 interoperates reliably with standard I²C masters in point-to-point or multi-drop configurations where address uniqueness is ensured via A0–A2 pin strapping.