PA4201

PA4201 PROTEC | Alldatasheet

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Technical content

www.protekdevices.com 95020 REV.0 08/07 PA4201-PUNK POP-UP NOISE KILLER 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 DTSTM) systems . 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.

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

www.protekdevices.com 95020 REV.0 08/07 NOT FOR USE IN LIFE SUPPORT SYSTEMS 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 Description Rating VX Voltage at any pin -0.3 to 7.0+0.3V IX Current at any pin 500mA TA Ambient Temperature 150 deg. C TS Storage Temperature 200 deg. C TSOL Soldering Temperature 260 deg. C Recommended Operating Conditions: Unless otherwise specified, VDD=3 +/- 10%, TA = Ambient Temperature = 25 deg. C. DC OPERATING CONDITIONS VIL Logic Low I/P Voltage IIL=1µA 0.3 VCC=5.5V, VDFET=0.4V 0.5 1 Symbol Parameter Condition Limit Unit Min Typ Max VDD a Positive Power Supply Normal Operation 2.7 5.5 V IDD VDD Current Normal Operation 1 µA TA Ambient Temperature Normal Operation -40 85 OC VOH Logic High O/P Voltage IOH=100µA VDD-0.1 V VOL Logic Low O/P Voltage IOL=-100µA 0.2 V VIH Logic High I/P Voltage IIH= 1µA VDD-0.3 V RON FET ON Resistance VDD=2.7V, VDFET=0.4V 0.7 1 ohm

www.protekdevices.com 95020 REV.0 08/07 NOT FOR USE IN LIFE SUPPORT SYSTEMS Symbol Parameter Condition Limit Unit Min Typ Max MOFFD b Mute release delay Mute Control=VIL 10 300 ms Set by ext. RC network at RCS pin MSTD b Soft mute fall/rise time Mute Control transitions to VIH. 1 300 ms Set by ext. capacitor CEXT MPDEL Mute ON Delay Power drops by 10% 5 µS NFETVc NFET open drain volt 12 V 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. Output switches are open drain N channel MOSFETS PIN OUT 1 VCC Positive power supply. 2.7V tp 5.5V +/-10%

2 RCS Power On mute delay resistor-capacitor connection

3 CEXT Soft mute delay capacitor

5 MUTE1 Open Drain output of NFET 1

6 MUTE2 Open Drain output of NFET 2

7 GND Ground

8 MUTECONT Mute control signal from microprocessor

TYPICAL APPLICATION BLOCK DIAGRAM Pin Name Function

4 SMUTEOUT Soft Mute OUT for multiple channels

PA4201-PUNK POP-UP NOISE KILLER

www.protekdevices.com 95020 REV.0 08/07 NOT FOR USE IN LIFE SUPPORT SYSTEMS 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. When the voltage this RC pin reaches a certain threshold, the mute controller releases the lines (Gate voltage is LOW) and Normal Operation starts. Shutdown During Shutdown, the reverse process happens. As the power supply reaches the threshold on its way down, the mute controller again latches the outputs to HIGH, thus “muting” the lines (figure 2). This muting prevents unwanted signal spikes from getting the power amplifiers. However, for optimal performance, it is suggested to mute the lines using the MUTECONT signal before power down. This process will ensure that the pop noise involved during shutdown is diminished. SOFT Mute During normal operation, PUNK is in OFF state. But if there arises a situation when the audio lines need to be muted, the designer can do this by asserting the MUTECONT signal to HIGH. This will initiate a SOFT mute sequence (figure 3). When the MUTECONT signal is asserted, the mute controller gradually ramps, the control voltages in a “SOFT” fashion so as to provide a soft mute operation. The mute delay is fully controllable by the designer by using an external capacitor at CEXT. Typical values of CEXT are between 0.1 micro F and 0.5 µF. The reverse happens when the MUTECONT signal is released. This operation is explained in detail in the Application Circuit section.

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

www.protekdevices.com 95020 REV.0 08/07 NOT FOR USE IN LIFE SUPPORT SYSTEMS /MT84/MT111/MT112/MT32/MT99/MT111/MT118/MT101/MT114/MT32/MT116/MT97/MT112/MT101 /MT75/MT48 /MT116 /MT68 /MT80/MT48 /MT80/MT50 /MT49/MT48/MT32/MT80/MT105/MT116/MT99/MT104/MT101/MT115/MT32/MT67/MT117/MT109/MT117/MT108/MT97/MT116/MT105/MT118/MT101 /MT84/MT111/MT108/MT101/MT114/MT97/MT110/MT99/MT101/MT32/MT111/MT110/MT32/MT84/MT97/MT112/MT101/MT46/MT32/MT177/MT32/MT48/MT46/MT50 /MT65/MT48 /MT66/MT48 /MT80 /MT69 /MT70 /MT87 /MT85/MT115/MT101/MT114/MT32/MT68/MT105/MT114/MT101/MT99/MT116/MT105/MT111/MT110/MT32/MT111/MT102/MT32/MT70/MT101/MT101/MT100 /MT80/MT105/MT110/MT32/MT49 /MT73/MT110/MT100/MT105/MT99/MT97/MT116/MT101/MT100 /MT98/MT121/MT32/MT68/MT111/MT116 Tape & Reel Specifications (Dimensions in millimeters) DE P0 tmaxFP 2 W P 4.00 ±0.10 0.25 A0 B0 K0Reel Dia. Tape Width /MT80/MT49 /MT80/MT50 /MT84/MT79/MT80/MT32/MT86/MT73/MT69/MT87/MT69/MT78/MT68/MT32/MT86/MT73/MT69/MT87 /MT76/MT51 /MT80/MT51 /MT71/MT50 /MT71/MT49 /MT76/MT49 /MT76/MT50 /MT83/MT73/MT68/MT69/MT32/MT86/MT73/MT69/MT87 /MT112 /MT66/MT79/MT84/MT84/MT79/MT77/MT32/MT86/MT73/MT69/MT87 PACKAGE OUTLINE p 1.90 1.50 0.50 0.23 0.28 0.13 0.50 0.90 0.30 DIM MILLIMETERS INCHES PACKAGE DIMENSIONS NOTES: 1. Controlling dimensions in millimeters 2. Dimension b applies to terminal and is measured between 0.25 and 0.30mm from terminal. 3. Coplanarity applies to the exposed pad as well as the terminals. 4. Dimension p is BSC. TAPE & REEL ORDERING NOMENCLATURE 1. Surface mount product is taped and reeled in accordance with EIA 481. 2. Suffix-T71 = 7 Inch Reel - 1,000 piecesper 8mm tape. 3. Suffix-T73 = 7 Inch Reel - 3,000 piecesper 8mm tape. 4. Suffix - LF = Lead-Free, Pure Tin Plating. MIN MAX MIN MAX 0.075 0.059 0.020 0.009 0.010 0.005 0.020 0.035 0.012 0.083 0.067 0.024 0.012 0.016 0.007 0.020 0.058 0.016 2.10 1.70 0.60 0.30 0.40 0.18 0.50 1.45 0.42 DFN-8LP PACKAGE OUTLINE & DIMENSIONS Only One Name Means ProTek’Tion™

www.protekdevices.com 95020 REV.0 08/07 NOT FOR USE IN LIFE SUPPORT SYSTEMS SO-8 PACKAGE OUTLINE & DIMENSIONS TAPE & REEL/BULK ORDERING NOMENCLATURE 1. Surface mount product is taped and reeled in accordance with EIA-481. 2. Suffix-T7 = 7 Inch Reel - 1,000 pieces per 12mm tape . 3. Suffix-T13 = 13 Inch Reel - 2,500 pieces per 12mm tape. 4. Suffix - LF = Lead-Free, Pure-Tin Plating. 5. No Suffix = Product Shipped in Tubes of 98 pcs per Tube. A B C D F G J K P R 4.80 3.80 1.35 0.35 0.40

1.27 BSC

0.18 0.10 5.80 0.25 5.00 4.00 1.75 0.49 1.250 0.25 0.25 6.20 0.50 0.189 0.150 0.054 0.014 0.016

0.05 BSC

0.007 0.004 0.229 0.010 0.196 0.157 0.068 0.019 0.049 0.009 0.008 0.244 0.019 DIM MIN MAX MIN MAX MILLIMETERS INCHES PACKAGE DIMENSIONS NOTES 1. - T - = Seating Plane and Datum Surface. 2. Dimensions “A” and “B” are Datum. 3. Dimensions “A” and “B” do not include mold protrusion. 4. Maximum mold protrusion is 0.015” (0.380 mm) per side. 5. Dimensioning and tolerances per ANSI Y14.5M, 1982. 6. Dimensions are exclusive of mold flash and metal burrs. /MT45/MT65/MT45 /MT56/MT53 /MT49 /MT52 /MT45/MT66/MT32/MT45/MT80 /MT71 /MT68 /MT45/MT84/MT45 /MT67 /MT75 /MT74 /MT82/MT32/MT120/MT32/MT52/MT53/MT176 /MT48/MT176/MT32/MT45/MT32/MT49/MT48/MT176 /MT70 /MT52/MT32/MT80/MT76 /MT48/MT46/MT48/MT49/MT48/MT148/MT32/MT40/MT48/MT46/MT50/MT53/MT32/MT77/MT77/MT41/MT77 /MT77/MT66/MT43 /MT56/MT32/MT80/MT76 /MT48/MT46/MT48/MT49/MT48/MT148/MT32/MT40/MT48/MT46/MT50/MT53/MT32/MT77/MT77/MT41/MT77 /MT83/MT66/MT43 /MT83/MT65/MT84 PACKAGE OUTLINE SO-8 /MT48/MT46/MT48/MT53/MT48/MT32/MT177/MT32/MT48/MT46/MT48/MT48/MT53/MT148 /MT48/MT46/MT48/MT51/MT48/MT32/MT177/MT32/MT48/MT46/MT48/MT48/MT53/MT148 /MT48/MT46/MT50/MT52/MT53/MT148/MT32/MT77/MT73/MT78/MT48/MT46/MT49/MT54/MT48/MT32/MT177/MT32/MT48/MT46/MT48/MT48/MT53/MT148 /MT48/MT46/MT48/MT52/MT53/MT32/MT177/MT32/MT48/MT46/MT48/MT48/MT53/MT148 MOUNTING PAD