Renesas X95820UV14IZ-2.7T1

Overview

X95820UV14IZ-2.7T1 from Intersil is a dual digital controlled potentiometer (XDCP™) IC implementing two independent 256-tap, 50kΩ CMOS resistor networks with I²C interface, non-volatile initial value storage, and wiper position recall at power-up-used for precision analog voltage division and rheostat-mode biasing in sensor signal conditioning and programmable gain amplifiers.

For engineers reviewing the X95820UV14IZ-2.7T1 datasheet, X95820UV14IZ-2.7T1 pinout, X95820UV14IZ-2.7T1 application, or X95820UV14IZ-2.7T1 equivalent, this page delivers verified electrical specs, I²C timing compliance, wiper resistance behavior, DCP matching performance, and industrial-grade temperature stability across –40°C to +85°C operation.

Technical Context

The X95820UV14IZ-2.7T1 integrates two monolithic DCPs sharing a single I²C slave interface with three address pins (A0–A2), enabling up to eight devices on one 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-on.

Wiper positioning is fully controlled via I²C commands; write protection is enforced by the active-low WP pin. The device operates in voltage divider mode (RH–RW–RL) or rheostat mode (RW–RL or RW–RH), with monotonicity guaranteed and integral non-linearity limited to ±1 LSB over full scale.

Key Specifications

Pinout & Package

Package: 14-lead TSSOP (Thin Shrink Small Outline Plastic), RoHS-compliant Pb-free plus anneal finish, JEDEC MO-153-AC compliant, body dimensions 4.95 × 6.25 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP45HV51-503E/ST, the X95820UV14IZ-2.7T1 uniquely delivers dual 50 kΩ DCPs with integrated non-volatile IVRs, I²C compatibility, and guaranteed ±2 LSB matching-making it optimal for compact, self-contained, and field-reprogrammable analog tuning systems.

Availability

X95820UV14IZ-2.7T1 is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable power supply feedback, and audio signal conditioning requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.

Supply support for X95820UV14IZ-2.7T1 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 precision power management, sensing, and interface applications.

The X95820UV14IZ-2.7T1 belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered for replacing mechanical pots in automated test equipment, industrial controls, and medical instrumentation where repeatability and non-volatility are essential.

FAQ

What is the default wiper position of each DCP in X95820UV14IZ-2.7T1 at power-up?

At power-up, both DCPs in the X95820UV14IZ-2.7T1 initialize their volatile Wiper Registers (WR) to 0x80 (128 decimal), placing the wipers at mid-scale-unless overridden by values stored in their non-volatile Initial Value Registers (IVRs), which are loaded into WR after VCC exceeds the power-on recall threshold (1.8 V min).

Does X95820UV14IZ-2.7T1 support true I²C multi-master arbitration?

No-the X95820UV14IZ-2.7T1 operates exclusively as an I²C slave device and does not implement arbitration logic. It responds only to START conditions and valid identification bytes (0xA0–0xA7), and ignores bus activity during internal non-volatile write cycles (12–20 ms duration).

Can X95820UV14IZ-2.7T1 be used in rheostat mode with only two terminals connected?

Yes-X95820UV14IZ-2.7T1 supports rheostat mode by connecting either RW–RL or RW–RH while leaving the third terminal (RH or RL) open. In this configuration, resistance varies from ~70 Ω (wiper at terminal) to 50 kΩ (wiper at opposite end), with monotonicity and ±1 LSB INL maintained per datasheet specifications.

What is the maximum capacitive load allowed on the SDA/SCL lines when interfacing with X95820UV14IZ-2.7T1?

The X95820UV14IZ-2.7T1 specifies a total capacitive load (Cb) limit of 400 pF on SDA or SCL lines. For Cb = 400 pF, external pull-up resistors should be ≤2.5 kΩ to meet rise/fall time specs (tR/tF ≤ 250 ns); lower capacitance (e.g., 40 pF) permits higher pull-ups (15–20 kΩ) to reduce bus current.

How is write protection implemented in X95820UV14IZ-2.7T1?

X95820UV14IZ-2.7T1 implements dual-layer write protection: (1) hardware-level via the active-low WP pin-pulling WP low blocks all I²C write operations regardless of address or data; and (2) protocol-level via STOP condition handling-non-volatile writes require STOP after valid address/data sequence, preventing partial writes during bus glitches.