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Click-Pop Suppression Device ANALOG PRODUCTS DIVISION 561 E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (480) 632-1715 www.protekanalog.com 95025. Rev0.0 12/10; PATENT PENDING; CONFIDENTIAL; COVERED BY NON DISCLOSURE AGREEMENT NOT FOR USE IN LIFE SUPPORT SYSTEMS Output Startup Shutdown Control Input Vcc PA4401 Pre Amp Input Pre Amp Output

FEATURES

Power-Up and Power-Down “POP” suppression ESD protected outputs 8-Lead SOIC package Series operation Only 1 external component required Ron (On resistance): 0.8 ohms Ron Flatness: 0.4 ohms Total Harmonic Distortion: <1% Current drain: <5mA Load: 600 ohms

APPLICATIONS

Pin Layout and Description GENERAL DESCRIPTION The PA4401 provides click-pop suppression for devices that lack a click-less/pop-less startup or shutdown. The PA4401 is placed between the codec and the output coupling capacitor. The click-pop noise is generated at the coupling capacitors while the system is starting up as well as shutting down. The PA4401 controls the ramping of the DC voltage into the coupling capacitors thus reducing the click-pop noise generated during the startup and shutdown. The start time can be controlled or changed using an external capacitor. ESD protection circuits are provided at the inputs and outputs of the device. The PA4401 consumes less than 5mA of current and provides a THD of less than 1% for a load of 600 ohms. The PA4401 is available in an 8L-SOIC and DFN-6 Packages. FUNCTIONAL DIAGRAM Figure 1: Functional block diagram of PA4401

Ordering Information

-40 to 85 °C DFN-6 PA4401DN-T7 SEL Logic System Voltage SEL Status 9V Ground 12V V CC Pin Symbol Designation

1 VCC Voltage

2 In1 Audio Input 1

3 In2 Audio Input 2

4 SEL Select 12 or 9Volt Operation

5 GND Ground

6 Out2 Audio Output 2

7 Out1 Audio Output 1

8 CEXT External Capacitor

8 VCC

Click-Pop Suppression Device ANALOG PRODUCTS DIVISION 561 E. Elliot Road #175 Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (480) 632-1715 www.protekanalog.com 95025. Rev0.0 12/10; PATENT PENDING; CONFIDENTIAL; COVERED BY NON DISCLOSURE AGREEMENT NOT FOR USE IN LIFE SUPPORT SYSTEMS ABSOLUTE MAXIMUM RATINGS (All Voltages are referenced to GND) Continuous Power Dissipation (TA = +70°C) Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS. Unless otherwise specified, VDD=12V, SEL = VDD,TA = Ambient Temperature = 25 °C. Limit Symbol Parameter Condition Min Typical Max Unit VDD Power Supply Normal Operation 9.0 12.0 V IDD Supply Current Normal Operation 5 mA TA Ambient Temperature Normal Operation -40 +85 ºC VGATE = 10V, IDFET = 100mA 1.8 2.0 VGATE = 15V, IDFET = 100mA 1.5 1.8 RON FET ON Resistance VGATE = 20V, IDFET = 100mA 1.3 1.5 Ω RFLAT(ON) ON Resistance Flatness Over Input Voltage Range 15 m Ω THD Total Harmonic Distortion RL = 600 Ω, VSIG = 2VRMS f = 1kHz .020 1 % XTALK Crosstalk (on) f = 20kHz -100 dB QIRR Off Isolation f = 20kHz RL= 600 Ω -108 dB VSIG Analog Signal Range Normal Operation 2.0 V RMS VESD ESD Protection HBM 4 kV ROUT Output Discharge Resistor 100 k Ω fCO Bandwidth >100 kHz VUVLO Power Off Threshold V CC Falling 90% V CC

Click-Pop Suppression Device ANALOG PRODUCTS DIVISION 561 E. Elliot Road #175, Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (602) 414-5141 www.protekanalog.com 95025. Rev.0. 05/2008 NOT FOR USE IN LIFE SUPPORT SYSTEMS Test Circuit for Turn-On time vs. CEXT and Turn-Off Time vs. CEXT CEXT (nF) t ON (mS) t OFF (mS) 1 3.6 23 10 12 23 100 42 28 1000 300 32 2200 690 48 Control Element INx VOUTx VDD CEXT C1 1MΩ 50% 50% tON 90% 10% tOFF VINx VOUTx Turn-On tim e vs. Cext 100 200 300 400 500 600 700 800 1 10 100 1000 10000 Capacitor Value (nF) Turn-On Time (ms) Turn-Off time vs. Cext 1 10 100 1000 10000 Capacitor Value (nF) Turn-Off Time (ms)

Click-Pop Suppression Device ANALOG PRODUCTS DIVISION 561 E. Elliot Road #175, Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (602) 414-5141 www.protekanalog.com 95025. Rev.0. 05/2008 NOT FOR USE IN LIFE SUPPORT SYSTEMS + 0.0I0” (0.25 MM) M T B S A S SO-8 PACKAGE OUTLINE & DIMENSIONS SO-8 PACKAGE DIMENSIONS MILLIMETERS INCHES DIM MIN MAX MIN MAX 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 PACKAGE OUTLINE -A- 8 5 -B - P + 0.0I0” (0.25 MM) M B M 4 PL I 4 D G C 45 0 - I0 -T- J F 8 PL MOUNTING PAD 0.050 + 0.005” 0.030 + 0.005” 0.045 + 0.005” 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. 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. No Suffix = Product Shipped in Tubes of 98 pcs per Tube. Outline & Dimensions: Rev 1 - 11/01, 06009

Click-Pop Suppression Device ANALOG PRODUCTS DIVISION 561 E. Elliot Road #175, Chandler, AZ 85225 Tel: (480) 539-2900. Fax: (602) 414-5141 www.protekanalog.com 95025. Rev.0. 05/2008 NOT FOR USE IN LIFE SUPPORT SYSTEMS Package Outline and Dimensions DFN-8 MILLIMETERS Dim MIN TYP MAX P1 2.95 3.00 3.05 P2 2.95 3.00 3.05 P3 0.70 0.75 0.80 L1 0.23 0.25 0.27 L2 0.35 0.40 0.45 L3 0.02 0.02 0.02 p 0.60 0.65 0.70 G1 2.25 2.30 2.35 G2 1.50 1.55 1.60 Tape and Reel Specifications Reel Dia A0 B0 K0 D E F W P0 P2 P t-max Life Support Policy PROTEK ANALOG'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF PROTEK DEVICES. P3 L3 SIDE VIEW Recommended Land Pattern 2.74mm 1.85mm 2.60mm 0.65mm 0.60mm 0.30mm P2 D P E F W Pin 1 indicated b y Dot Top cover tape t

10 Pitches Cumulative

Tolerance on Tape± 0.2 TOP VIEW p BOTTOM VIEW 1 4 Pin 1 Indicator PA4401 XXXX PA4401 XXXX PA4401 XXXX PA4401 XXXX