Renesas X95820UV14I-2.7

Overview

X95820UV14I-2.7 from Intersil is a dual digital controlled potentiometer (XDCP™) IC implementing two independent 256-tap, 50kΩ 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-DC feedback loops.

For engineers reviewing the X95820UV14I-2.7 datasheet, X95820UV14I-2.7 pinout, X95820UV14I-2.7 application, or X95820UV14I-2.7 equivalent, key selection criteria include its 50kΩ end-to-end resistance, ±4 ppm/°C ratiometric temperature coefficient in voltage divider mode, 70Ω typical wiper resistance at 3.3V, I²C addressability via A0–A2 pins, and industrial-grade –40°C to +85°C operation with non-volatile wiper recall on power-up.

Technical Context

The X95820UV14I-2.7 integrates two monolithic DCPs sharing a single I²C slave interface, each with independent volatile Wiper Registers (WR) and non-volatile Initial Value Registers (IVR). Its architecture uses resistor ladders and CMOS switches to achieve monotonic 8-bit tap positioning, with power-on recall loading IVR contents into WRs.

Control logic supports dual memory access modes via Address Byte 8: default mode writes simultaneously to WR and IVR (addresses 0–1), while 0x80 mode enables volatile-only reads/writes. Hardware write protection is implemented via active-low WP pin, and device addressing supports up to eight units per bus using A0–A2 pins.

Key Specifications

Pinout & Package

14-lead TSSOP package (JEDEC MO-153-AC compliant), 5.0mm × 4.4mm body, 0.65mm lead pitch, Pb-free plus anneal finish (RoHS compliant).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5242BRUZ10 and MCP45HV51-502E/ST, the X95820UV14I-2.7 uniquely delivers guaranteed dual-channel matching (≤±2 LSB), hardware write protection, and 50-year non-volatile retention-making it optimal for calibration-critical, maintenance-free embedded systems operating strictly within 2.7–5.5V.

Availability

X95820UV14I-2.7 is available at Aetrix Electronics and suitable for programmable gain amplifiers, DC-DC feedback networks, sensor calibration circuits, and audio balance control requiring stable component supply and long-term calibration integrity.

Supply support for X95820UV14I-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) is a U.S.-based analog and mixed-signal semiconductor company specializing in power management, precision analog, and interface ICs.

The X95820 product line was designed for high-reliability, digitally programmable analog trimming in industrial, medical, and test equipment-emphasizing non-volatile configuration retention, low noise, and robust I²C control.

FAQ

What is the total resistance value of the X95820UV14I-2.7?

The X95820UV14I-2.7 has a nominal total resistance of 50kΩ between RH and RL terminals for both integrated potentiometers. This value is specified with ±20% tolerance across temperature and process variation, and is confirmed in the Analog Specifications table on page 3 of the FN8212 datasheet under RTOTAL parameter for "U" versions.

Does the X95820UV14I-2.7 retain wiper settings after power cycling?

Yes, the X95820UV14I-2.7 retains wiper positions using non-volatile Initial Value Registers (IVRs). At power-up, the device automatically loads the stored IVR values into the volatile Wiper Registers (WRs), ensuring repeatable startup behavior. IVR data retention is rated for 50 years at temperatures ≤75°C, as specified in the Operating Specifications section on page 4.

How many I²C addresses can be assigned to the X95820UV14I-2.7?

The X95820UV14I-2.7 supports up to eight unique I²C addresses using the A0, A1, and A2 hardware address pins. These three pins form a 3-bit binary address that selects one of eight possible addresses in the 0x50–0x57 range, enabling multiple X95820UV14I-2.7 devices on a single I²C bus without address conflict.

What is the maximum wiper current rating for the X95820UV14I-2.7?

The maximum wiper current rating for the X95820UV14I-2.7 is ±3.0mA per DCP, as stated in the Recommended Operating Conditions table on page 3 of the datasheet. Exceeding this limit may cause irreversible damage to the internal CMOS switches or degrade long-term reliability.

Is hardware write protection available on the X95820UV14I-2.7?

Yes, the X95820UV14I-2.7 includes a dedicated hardware write protection (WP) pin (Pin 2) that disables all I²C write operations when pulled low. When WP is high, normal read/write functionality is enabled. This feature prevents accidental or malicious register modification and is documented in the Pin Descriptions table on page 2 and the Data Protection section on page 11.