PA4201 PROTEC [Protek Devices], PA4201 Datasheet

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PA4201

Manufacturer Part Number
PA4201
Description
PUNK POP-UP NOISE KILLER
Manufacturer
PROTEC [Protek Devices]
Datasheet
www.protekdevices.com
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 SOFT mute on an audio line during normal operation. PUNK is an
exceptional product for multi-channel devices as it is capable of expanding the SOFT mute operation into
(Dolby 5.1 DTS
PUNK requires few external components for its operation, working from low to medium power supply voltages
of 2.7V to 5.5V. As soon as a change in the power supply is detected, PUNK ensures that audio inputs to
succeeding amplifiers are switched to a convenient low impedance voltage rail. This causes the amplifiers to
remain silent as the power supply changes state.
PUNK operates as a passive shunt device. So the designer does not have to worry about 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 as well as the SO-8 package and is specified for operation
over the -40 to +85 deg. C temperature range.
PA4201-PUNK POP-UP NOISE KILLER
95020 REV.0 08/07
FEATURES
Extremely low supply current (<1µA)
>45dB mute attenuation
Shunt operation.
SOFT mute during normal operation.
Built-in expansion capability. Soft Mute out for driving additional channels.
Instant Power UP and Power DOWN muting.
ESD protected outputs.
2.7V to 5.5V supply operation.
Compact 2 x 2 x 0.6mm 8 lead DFN and SO-8 Package
APPLICATIONS
Cell phones
PDAs
Portable DVD Players
Portable MP3 Players
Notebook Audio
Set-top boxes
Digital Video Recorders
LCD TVs
Home Theater systems
TM
) systems .
1
DFN-8

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PA4201 Summary of contents

Page 1

... Home Theater systems GENERAL DESCRIPTION PA4201 (PUNK 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 SOFT mute on an audio line during normal operation ...

Page 2

... PA4201-PUNK POP-UP NOISE KILLER-ABSOLUTE MAXIMUM RATINGS Sustained operation at or above the following ratings is not recommended. Catastrophic and irre versible damage will occur to the device at or above these ratings. Symbol SOL Recommended Operating Conditions: Unless otherwise specified, VDD=3 +/- 10 Ambient Temperature = 25 deg. C. ...

Page 3

... PA4201-PUNK POP-UP NOISE KILLER Symbol Parameter b M Mute release delay OFFD b M Soft mute fall/rise time STD M Mute ON Delay PDEL NFETV c NFET open drain volt Notes: a. Power supply stabilization times have been assumed to range from 20ms to 200ms b. Two external capacitors (C1 and C2) set the delay time for mute release and soft mute c ...

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... PA4201-PUNK POP-UP NOISE KILLER -THEORY OF OPERATION Startup During Startup, the power supply ramps from 0V to VCC. This time is usually in excess of 20ms. As soon as this change in voltage is sensed, PUNK latches the Mute Controller outputs to HIGH, thus “muting” the lines. This is the Startup Operation (figure 1). The duration for which for which the controller outputs are latched HIGH can be controlled by an external RC circuit ...

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... PA4201-PUNK POP-UP NOISE KILLER 95020 REV.0 08/07 www.protekdevices.com NOT FOR USE IN LIFE SUPPORT SYSTEMS 5 ...

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DFN-8LP PACKAGE OUTLINE & DIMENSIONS Reel Dia. Tape Width A0 178mm (7”)/330mm(13”) 8mm 2.30± 0.10 2.30± 0.10 0.80 ± 0.10 95020 REV.0 08/07 www.protekdevices.com NOT FOR USE IN LIFE SUPPORT SYSTEMS Only One Name Means ProTek’Tion™ PACKAGE OUTLINE Tape & ...

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SO-8 PACKAGE OUTLINE & DIMENSIONS PACKAGE OUTLINE MOUNTING PAD 95020 REV.0 08/07 www.protekdevices.com NOT FOR USE IN LIFE SUPPORT SYSTEMS PACKAGE DIMENSIONS MILLIMETERS DIM MIN A 4.80 B 3.80 C 1.35 D 0.35 F 0.40 G 1.27 BSC J 0.18 ...

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