PA4201: Punk Shunt 1,5V

Features Extremely Low supply current (<1μA). >45dB mute attenuation. Shunt operation. SOFTMUTE during normal operation. Built-in expansion capability SOFTMUTE out for driving additional channels. Instantaneous. Power-up and Power-down muting. ESD protected outputs. 1.5V to 2.7V supply operation. Compact2x2x0.6mm8leadDFN.

Applications Cell phones PDA’s Portable DVD players Portable MP3 players Notebook Audio Set-top boxes Digital Video Recorders LCD TVs Home Theater systems

• Application Notes
• Block Diagrams
• White Papers
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• Datasheet

General Description

PA4201 (PUNK) is a low power (ICC< 1μA) monolithic CMOS mixed signal device.

PUNK’s primary function is to control power supply transition noise in audio circuits and systems. PUNK boasts several features that make it a “one of a kind” product on the market. Most prominent is the feature that allows the designer to implement SOFTMUTE on an audio line during normal operation. PUNK is an exceptional product for multi-channel devices as it is capable of expanding the
SOFTMUTE operation into systems such as Dolby®5.1, DTSTM.

PUNK requires few external components for its operation, working from low to medium supply voltages of 1.5V to 2.7V.
On power-up and power-down the audio inputs to succeeding amplifiers are switched to a convenient low impedance voltage rail. Muting the amplifiers, preventing the audible pop, that is normally heard in the headset.

PUNK operates as a passive shunt device. So the designer does not have to worry about the PUNK introducing any kind of noise or distortion into the system. While consuming less than 1μA of supply current PUNK provides more than 45dB of mute attenuation at the audio lines.

PUNK is equipped with ESD (Human Body Model) protection circuitry on the outputs.

PUNK is available as an 8L low profile 0.6mm DFN package and is specified for operation over the -40° C to +85°C temperature range.