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News

Intersil - New low-noise, low power potentiometers


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Intersil
: 06 April, 2008  (New Product)
Intersil Corporation has announced the ISL23511 and ISL23512 low-noise, low-power, single push-button digitally controlled potentiometers in small 2mm x 1.6mm micro-TQFN packages.
Intersil Corporation has announced the ISL23511 and ISL23512 low-noise, low-power, single push-button digitally controlled potentiometers in small 2mm x 1.6mm micro-TQFN packages.

In addition to an easy push-button interface, these DCPs feature a two-mode automatic increment/decrement function that allows the customer to hold the pin low until the designated position is reached. The initial hold will increment or decrement every 250ms, and then enter the second mode after one second. At that point, the wiper position will change every 50ms.

Both the ISL23511 and ISL23512 feature a rugged +125C operating temperature rating that allows them to be designed into high-temperature environments.

The ISL23511 and ISL23512 both integrate a shutdown mode that disconnects the top of the resistor chain and moves the wiper to the lowest position, minimizing power consumption. The purpose of the shutdown is to completely disconnect the current path thru the DCP but still keep the digital logic active. In addition it can serve as a quick calibration when GND level needs to be verified.

The ISL23512 is a 16-tap device that is ideal for applications that require only a limited amount of adjustment settings. The ISL23511, on the other hand, features 32 taps for designs needing higher resolution for more adjustment options.

Before July 2008, Intersil will also release the ISL22511 and ISL22512 non-volatile versions of these products in the same tiny TQFN packages. This will further expand the DCP offerings for applications that need to retain the last setting at power-up.


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