Renesas ISL90462TIE627Z-TK

Overview

ISL90462TIE627Z-TK from Intersil is a volatile digitally controlled potentiometer (XDCP™) configured as a 100kΩ end-to-end variable resistor with 32 discrete wiper tap points, 2-pin UP/DN interface, and ±35ppm/°C tempco-used for precision bias and gain adjustment in sensor signal chains and laser diode drivers.

For engineers reviewing the ISL90462TIE627Z-TK datasheet, ISL90462TIE627Z-TK pinout, ISL90462TIE627Z-TK application, or ISL90462TIE627Z-TK equivalent, key selection criteria include its SC-70-6 package, 2.7V–5.5V supply range, 25µA active current, volatile wiper position storage, and compatibility with low-power industrial control loops requiring stable analog trimming without nonvolatile memory overhead.

Technical Context

The ISL90462TIE627Z-TK implements a 31-element resistor array with electronic wiper switching controlled by CS and U/D inputs; wiper movement is monotonic and non-wrapping, with settling time of 1µs after each tap change. Its architecture uses CMOS logic for counter decode and switch control, enabling direct integration into analog front-ends without external clock or serial protocol overhead.

Operation requires only two digital control lines: CS selects the device and latches wiper position on rising edge, while U/D determines increment/decrement direction at CS assertion. The RH–RW–GND terminal configuration supports both variable resistor and voltage divider topologies, with RH uncommitted and RW isolated from GND except through the tapped array.

Key Specifications

Pinout & Package

ISL90462TIE627Z-TK is housed in a Pb-free 6-lead SC-70 package (JEDEC MO-203AB, pkg drawing P6.049), measuring 2.15mm × 1.35mm × 0.95mm with 0.65mm lead pitch and pin 1 index area marked.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ISL90462TIE627Z-TK, the ISL90462UIE627Z-TK offers halved resistance for improved noise performance in low-impedance circuits, while the MCP4017T-E/OT trades volatile operation for nonvolatile retention and serial protocol flexibility at the cost of higher power and interface complexity.

Availability

ISL90462TIE627Z-TK is available at Aetrix Electronics and suitable for LCD contrast control, laser diode biasing, pressure sensor offset trim, and industrial DAC output scaling requiring stable component supply across extended temperature ranges.

Supply support for ISL90462TIE627Z-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 is a precision analog and power management semiconductor company, now part of Renesas Electronics, delivering high-reliability solutions for industrial, automotive, and infrastructure markets.

The ISL90462 product line delivers volatile digital potentiometers optimized for low-power, high-stability analog trimming in sensor interfaces, optical modules, and industrial control systems where EEPROM wear-out or serial protocol overhead is undesirable.

FAQ

What is the resistance tolerance and temperature coefficient of the ISL90462TIE627Z-TK?

The ISL90462TIE627Z-TK has an end-to-end resistance (RTOTAL) of 100kΩ with ±20% initial tolerance and a typical temperature coefficient of ±35ppm/°C over –40°C to +85°C. This tempco ensures less than ±0.3% resistance variation across the full industrial temperature range, making it suitable for precision calibration tasks where thermal stability is critical. The ISL90462TIE627Z-TK achieves this via matched polysilicon resistor elements and CMOS switch design.

Does the ISL90462TIE627Z-TK retain wiper position after power cycling?

No, the ISL90462TIE627Z-TK uses volatile memory only-the wiper position resets to mid-scale (tap 16) upon power-up. It does not include EEPROM or nonvolatile storage. To maintain a specific setting across power cycles, the host controller must reinitialize the wiper position via the UP/DN interface after startup. This behavior is inherent to the ISL90462TIE627Z-TK's architecture and is documented in the FN8230 datasheet Section "Principles of Operation".

What is the maximum allowable voltage on the RH, RW, and GND terminals of the ISL90462TIE627Z-TK?

The absolute maximum voltage on RH, RW, and GND terminals of the ISL90462TIE627Z-TK is constrained by the VDD–GND rating: voltages must remain within –1V to +7V relative to GND, but operational limits require RH and RW to stay within 0V to VDD (2.7V–5.5V). Exceeding VDD on RH or RW risks latch-up or permanent damage. The ISL90462TIE627Z-TK is not rated for rail-to-rail operation beyond its supply rails.

Can the ISL90462TIE627Z-TK be used as a three-terminal potentiometer with independent RH and RL connections?

No-the ISL90462TIE627Z-TK has only RH (high terminal) and GND (low terminal); there is no dedicated RL pin. The GND pin serves as the low-side endpoint of the resistor array, so the device functions as a two-terminal variable resistor (RH–GND) with RW as the movable tap. To implement a three-terminal potentiometer, RH must connect to a positive voltage and GND to circuit ground, with RW providing the adjustable midpoint-this is the only supported topology per the ISL90462TIE627Z-TK datasheet Figure 1 and Pin Descriptions.

What is the wiper resistance and current rating of the ISL90462TIE627Z-TK?

The ISL90462TIE627Z-TK specifies a typical wiper resistance (RW) of 600Ω and a maximum wiper current (IW) of ±0.6mA. These values define the on-resistance of the internal CMOS switch connecting the wiper to the resistor array and limit safe current flow through the RW node. Exceeding ±0.6mA may cause heating-induced resistance shift or long-term reliability degradation. The ISL90462TIE627Z-TK wiper is not intended for power switching-only signal-level analog adjustment.