Renesas ISL90461UIE627Z-TK

Overview

ISL90461UIE627Z-TK from Intersil is a volatile digitally controlled potentiometer (XDCP™) configured as a 50kΩ variable resistor with 32-tap resolution, ±35 ppm/°C tempco, and 2-pin Up/Down interface. It operates from 2.7V to 5.5V and delivers <25µA active current, serving in precision bias and gain control circuits for optical and sensor systems.

For engineers reviewing the ISL90461UIE627Z-TK datasheet, ISL90461UIE627Z-TK pinout, ISL90461UIE627Z-TK application, or ISL90461UIE627Z-TK equivalent, key selection criteria include its SC-70-6 package, volatile wiper memory, 50kΩ end-to-end resistance, ±1 MI absolute linearity, and compatibility with low-power industrial sensor calibration and laser diode biasing.

Technical Context

The ISL90461UIE627Z-TK implements a 31-element resistor array with electronic wiper switching controlled by CS and U/D inputs, where wiper position is stored in volatile memory upon CS high transition. Its architecture supports non-wrapping, monotonic tap movement and fixed RH–RL terminal configuration.

It uses CMOS logic for interface control and achieves 1µs output settling time after wiper increment/decrement. The device maintains specified performance across -40°C to +85°C with 0.3µA standby supply current and 600Ω typical wiper resistance.

Key Specifications

Pinout & Package

ISL90461UIE627Z-TK is housed in a Pb-free 6-lead SC-70 package (JEDEC MO-203AB, Intersil P6.049), measuring 2.15 mm × 1.35 mm × 1.10 mm (max), with gull-wing leads and 0.65 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5160BRJZ10-RL7 and MCP4017T-503E/OT, the ISL90461UIE627Z-TK offers superior temperature stability (±35 ppm/°C vs. ±100 ppm/°C) and smallest footprint (SC-70), while trading non-volatility for lower interface complexity and faster wiper update speed.

Availability

ISL90461UIE627Z-TK is available at Aetrix Electronics and suitable for LCD contrast control, laser diode biasing, pressure sensor offset trim, and temperature sensor gain calibration requiring stable component supply, RoHS-compliant packaging, and consistent parametric performance across production lots.

Supply support for ISL90461UIE627Z-TK 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 ISL90461UIE627Z-TK belongs to Intersil's XDCP™ family of digitally controlled potentiometers, engineered for precision analog trimming in space-constrained industrial, automotive, and optical systems where mechanical potentiometers fail.

FAQ

What is the end-to-end resistance tolerance of the ISL90461UIE627Z-TK?

The ISL90461UIE627Z-TK has a nominal RTOTAL of 50kΩ with a tolerance of ±20%, as specified in the Potentiometer Specifications table of FN8229 Rev 3.00. This tolerance applies across the full operating temperature range (-40°C to +85°C) and defines the maximum deviation of the RH-to-RL resistance at the extreme wiper positions. The ISL90461UIE627Z-TK does not specify tighter initial tolerance bins.

Does the ISL90461UIE627Z-TK retain wiper position after power loss?

No, the ISL90461UIE627Z-TK uses volatile memory only - wiper position is lost when VDD is removed. The device stores the current tap setting in latch memory only while powered, and reverts to default (typically mid-scale or undefined) on power-up. This behavior is inherent to the ISL90461UIE627Z-TK design and confirmed in the "Principles of Operation" section of the datasheet.

Can the ISL90461UIE627Z-TK be used in a 3-terminal potentiometer configuration?

No, the ISL90461UIE627Z-TK is internally wired as a 2-terminal variable resistor: the wiper is permanently tied to RH, leaving only RH and RL as accessible terminals. The datasheet explicitly states "The wiper of the potentiometer is tied to one end… at terminal RH", confirming that true 3-terminal operation (independent wiper, high, and low) is not supported by the ISL90461UIE627Z-TK.

What is the maximum allowable voltage across RH and RL terminals of the ISL90461UIE627Z-TK?

The absolute maximum voltage across RH and RL is limited by the device's Absolute Maximum Ratings: voltage on any pin with respect to GND must not exceed -1V to +7V. Since RH and RL are both referenced to GND, their differential voltage must remain within 0V to 7V under normal operation, and the ISL90461UIE627Z-TK is rated for ≤1mW total power dissipation - limiting practical RH–RL voltage to ~0.22V at full 50kΩ resistance.

Is the ISL90461UIE627Z-TK RoHS compliant and lead-free?

Yes, the "Z" suffix in ISL90461UIE627Z-TK denotes Pb-free plus anneal construction per Intersil's RoHS compliance program: 100% matte tin termination, RoHS-compliant molding compound and die attach, and MSL rating compatible with both SnPb and Pb-free reflow profiles. This is documented in the Ordering Information note of FN8229 Rev 3.00.