Renesas X95820WV14I-2.7

Overview

X95820WV14I-2.7 from Intersil is a dual digital controlled potentiometer (XDCP™) IC implementing two independent 256-tap, 10kΩ CMOS resistor networks with I²C interface, wiper registers, and non-volatile initial value storage-used for precision analog voltage division and rheostat control in programmable gain amplifiers, sensor calibration circuits, and DC bias adjustment.

For engineers reviewing the X95820WV14I-2.7 datasheet, X95820WV14I-2.7 pinout, X95820WV14I-2.7 application, or X95820WV14I-2.7 equivalent, key selection criteria include I²C address configurability (A0–A2), 2.7V to 5.5V supply compatibility, 70Ω typical wiper resistance at 3.3V, volatile/non-volatile register mapping, and 14-lead TSSOP package thermal and layout constraints.

Technical Context

The X95820WV14I-2.7 integrates two monolithic DCPs sharing a single I²C slave interface with configurable 7-bit address (1010xxxR/W), supporting up to eight devices per bus. Each DCP features an 8-bit volatile Wiper Register (WR) and a non-volatile Initial Value Register (IVR) that loads into WR at power-up after V_POR ≥ 2.6V.

Operation includes voltage-divider mode (RH–RL–RW) and rheostat mode (RW–RL or RW–RH), with monotonic DNL ≤ ±0.5 LSB and INL ≤ ±1 LSB over full tap range. Wiper position updates occur within 1 µs of SCL falling edge, and non-volatile writes require 12–20 ms with hardware write protection via active-low WP pin.

Key Specifications

Pinout & Package

Package: 14-lead Thin Shrink Small Outline Plastic (TSSOP), RoHS-compliant, body dimensions 5.0mm × 4.4mm × 1.2mm (JEDEC MO-153-AC).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP4651T-103E/ST, the X95820WV14I-2.7 uniquely delivers matched dual channels with guaranteed power-up recall, lower temperature coefficient, and integrated hardware write protection-making it optimal for embedded calibration and analog trimming where reliability and zero-touch startup are critical.

Availability

X95820WV14I-2.7 is available at Aetrix Electronics and suitable for programmable gain amplifiers, sensor calibration circuits, DC bias networks, and audio channel balancing requiring stable component supply across industrial temperature ranges and long product lifecycles.

Supply support for X95820WV14I-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 (now part of Renesas Electronics) designs high-performance analog and mixed-signal ICs for power management, precision analog, and interface applications.

The X95820WV14I-2.7 belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered specifically for replacing mechanical trimmers in automated test equipment, industrial control systems, and medical instrumentation where repeatable, non-volatile analog tuning is essential.

FAQ

What is the default wiper position of X95820WV14I-2.7 at power-up?

At power-up, both DCP wiper registers (WR0 and WR1) reset to 80h (128 decimal), placing each wiper at mid-scale between RH and RL terminals. This occurs before non-volatile IVR recall, which then loads the stored IVR values into the WRs-so final position depends on pre-programmed IVR contents.

Does X95820WV14I-2.7 support write-protection of non-volatile memory?

Yes. The X95820WV14I-2.7 uses an active-low WP pin: when WP is held low, all I²C write operations-including volatile and non-volatile register updates-are blocked. This prevents unintended changes to IVR contents during system operation or firmware updates.

Can X95820WV14I-2.7 operate from a 2.7V supply while maintaining full 256-tap resolution?

Yes. The X95820WV14I-2.7 is fully specified from 2.7V to 5.5V. At 2.7V, it maintains monotonicity, DNL ≤ ±0.5 LSB, and INL ≤ ±1 LSB across all 256 taps-verified in both voltage-divider and rheostat modes per datasheet Figures 3–8.

How many devices can share the same I²C bus with X95820WV14I-2.7?

Up to eight X95820WV14I-2.7 devices can coexist on one I²C bus using the three hardware address pins (A0, A1, A2). Each device responds only to its unique 7-bit slave address (1010xxx), eliminating software address conflicts and simplifying multi-potentiometer system design.

What is the maximum wiper current rating for X95820WV14I-2.7?

The X95820WV14I-2.7 specifies a maximum wiper current of ±3.0mA per DCP. Exceeding this may cause localized heating, resistance drift, or accelerated wear-designs must ensure worst-case current through RW–RL or RW–RH paths remains within this limit.