ISL90461UIE627-TK

Digital Potentiometers Overview

The ISL90461UIE627-TK is a digitally controlled potentiometer (XDCP) manufactured by Intersil, now part of Renesas Electronics. It features a volatile solid-state design with 32 wiper tap points and an end-to-end resistance of 50kΩ. The device operates on a 2-pin Up/Down interface for wiper position control via CS and U/D inputs. Key electrical specifications include a supply voltage range of 2.7V to 5.5V, a typical temperature coefficient of 35 ppm/°C, and low power consumption with active current under 25µA and standby current at 0.3µA. It is housed in a 6-lead SC-70 package.

Digital Potentiometers Feature Summary

• Volatile digital potentiometer with 32 wiper tap points
• End-to-end resistance of 50kΩ with ±1 MI absolute linearity
• 2-pin serial interface (CS and U/D) for wiper control
• Low power operation: 25µA active, 0.3µA standby

Digital Potentiometers Applications

• LCD contrast control
• Parameter and bias adjustments
• Industrial and automotive control systems
• Transducer adjustment for pressure, temperature, and optical sensors
• Laser diode driver biasing

Digital Potentiometers Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm the total resistance value and package type. The 'U' designation indicates a 50kΩ resistance, while 'E627' specifies the SC-70 package. Confirm RoHS compliance status if required, as indicated by the 'Z' suffix in related part numbers within the same series.

Digital Potentiometers Selection Notes

Select this component when a volatile, non-memorized resistance setting is acceptable after power loss. Ensure the application requires a 50kΩ maximum resistance range. Verify that the system can support the 2.7V to 5.5V supply voltage and that the 2-pin interface timing requirements (setup/hold times) are met by the controlling logic.

Digital Potentiometers Part Context

This part belongs to the ISL90461 family of single volatile XDCPs. Variants in this series offer different total resistance values (10kΩ, 50kΩ, 100kΩ) and package options (SC-70 or SOT-23). The ISL90461UIE627-TK specifically denotes the 50kΩ version in the compact SC-70 footprint, suitable for space-constrained designs requiring precise analog signal conditioning.

Digital Potentiometers Replacement Considerations

Direct substitutes within the same family include ISL90461WIE627-TK (10kΩ) and ISL90461TIE627-TK (100kΩ) if resistance scaling is permissible. Cross-manufacturer replacements must match the 32-tap resolution, 50kΩ range, and 2-pin interface protocol.