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PA4401DN-T7 [PROTEC]

Click-Pop Suppression Device; 点击噼噗声抑制装置
PA4401DN-T7
型号： PA4401DN-T7
厂家： PROTEK DEVICES    PROTEK DEVICES
描述：

Click-Pop Suppression Device
点击噼噗声抑制装置

装置
文件： 总7页 (文件大小：108K)
中文：  中文翻译
下载：  下载PDF数据表文档文件
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PA4401  
Click-Pop Suppression Device  
ANALO G P RO DUCTS DIVIS IO N  
FEATURES  
GENERAL DESCRIPTION  
9V or 12V operation  
3V RMS Capability  
Power-Up and Power-Down “POP” suppression  
ESD protected outputs  
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.  
8-Lead SOIC package  
Series operation  
Only 1 external component required  
Ron (On resistance):  
Ron Flatness:  
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.  
0.8 ohms  
0.4 ohms  
<1%  
Total Harmonic Distortion:  
Current drain:  
The start time can be controlled or changed using an external  
capacitor.  
<5mA  
Load:  
600 ohms  
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.  
APPLICATIONS  
Portable DVD players  
Set-top boxes  
Car Audio  
High End Audio  
Televisions  
The PA4401 is available in an 8L-SOIC and DFN-6  
Packages.  
Stereo Systems  
Digital Video Recorders  
LCD TVs  
FUNCTIONAL DIAGRAM  
Home Theater systems  
Input  
Pre  
Amp  
Vcc  
Output  
Output  
Pin Layout and Description  
Startup  
&
Shutdown  
Control  
VCC  
1
2
3
4
8
7
6
5
CEXT  
CEXT  
8
VCC  
SOIC-8  
1
In 1  
In 2  
Out 1  
Out 2  
Input  
7 Out 1  
In 1  
In 2  
2
Pre  
Amp  
DFN-6  
PA4401  
3
4
Out 2  
GND  
6
5
SEL  
GND  
SEL  
Figure 1: Functional block diagram of PA4401  
Ordering Information  
Temperature  
Range  
Pin  
Symbol  
Designation  
Voltage  
Package  
SOIC-8  
DFN-6  
Part Number  
PA4401DQ-T7  
PA4401DN-T7  
1
2
3
4
5
6
7
8
VCC  
In1  
Audio Input 1  
Audio Input 2  
-40 to 85 °C  
In2  
SEL  
GND  
Out2  
Out1  
CEXT  
Select 12 or 9Volt Operation  
Ground  
SEL Logic  
Audio Output 2  
System Voltage  
SEL Status  
Ground  
VCC  
Audio Output 1  
9V  
External Capacitor  
12V  
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  
PA4401  
Click-Pop Suppression Device  
ANALO G P RO DUCTS DIVIS IO N  
ABSOLUTE MAXIMUM RATINGS  
(All Voltages are referenced to GND)  
Operating Temperature Range ...........................-40°C to +85°C  
Storage Temperature Range .............................-65°C to +150°C  
Junction Temperature ......................................................+150°C  
Lead Temperature (soldering, 10s) .................................+300°C  
V
........................................................................................+15V  
CC  
Continuous Current (IN_, OUT_).....................................±150mA  
Continuous Current (All Other Pins) .................................±20mA  
Continuous Power Dissipation (T  
= +70°C)  
A
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.  
°C  
Unless otherwise specified, VDD=12V, SEL = VDD,TA = Ambient Temperature = 25  
.
Limit  
Symbol  
Parameter  
Condition  
Unit  
Min  
Typical  
Max  
12.0  
5
VDD  
IDD  
TA  
Power Supply  
Normal Operation  
9.0  
V
Supply Current  
Normal Operation  
mA  
ºC  
Ambient Temperature  
Normal Operation  
-40  
+85  
2.0  
1.8  
VGATE = 10V, IDFET = 100mA  
VGATE = 15V, IDFET = 100mA  
1.8  
1.5  
RON  
FET ON Resistance  
Ω
VGATE = 20V, IDFET = 100mA  
1.3  
15  
1.5  
RFLAT(ON) ON Resistance Flatness  
m
Ω
Over Input Voltage Range  
RL = 600  
f = 1kHz  
f = 20kHz  
Ω, VSIG = 2VRMS  
THD  
Total Harmonic Distortion  
.020  
1
%
XTALK  
QIRR  
VSIG  
Crosstalk (on)  
-100  
-108  
dB  
dB  
Off Isolation  
f = 20kHz RL= 600  
Normal Operation  
HBM  
Ω
Analog Signal Range  
ESD Protection  
2.0  
VRMS  
kV  
VESD  
ROUT  
fCO  
4
Output Discharge Resistor  
Bandwidth  
100  
>100  
90%  
k
Ω
kHz  
VCC  
VUVLO  
Power Off Threshold  
VCC Falling  
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  
PA4401  
Click-Pop Suppression Device  
ANALOG PRODUCTS DIVISION  
DETAILED DESCRIPTION  
Figure2. Shows the normal setup of a Pre Amplifier system. Since the system is built on a single ended power supply the  
outputs of the pre-amplifier need to be routed through a bypass capacitor to get rid of the DC bias.  
Pre  
Amp  
+
Power  
Amp  
Pre  
Amp  
+
Power  
Amp  
Figure 2: Normal setup for a pre amplifier output  
When the power supply to the system is turned ON there is a spike in the output of the system because of the charging of  
various components in the system. This spike is called a “Click or Pop Noise”. When this click/pop noise passes through the  
Power Amplifiers, the noise is amplified and listeners hear an audible ‘pop’ which causes discomfort. The reverse operation  
happens when the system is powering down. These operations are shown below in figure3. The top waveform shows the power  
supply Powering Up and Powering Down. The middle waveform shows the voltage appearing at the positive terminal of the  
bypass capacitor. The bottom waveform shows the voltage at the output of the bypass capacitor. This is the Pop-Noise that is  
amplified by the power amplifier.  
t
t
50mS  
VCC  
50mS  
Power Supply Waveform  
0
VCC/2  
Bypass capacitor input plate  
System output  
>500mV  
start-up “pop”  
0
>500mV  
shutdown “pop”  
time  
mSec  
Figure 3: Power Up and Power Down sequences and waveforms  
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  
PA4401  
Click-Pop Suppression Device  
ANALOG PRODUCTS DIVISION  
CONNECTION DIAGRAM  
The PA4401 will be placed after the pre-amplifier and before the output bypass capacitors.  
VCC  
Pre  
Amp  
+
IN  
OUT  
Pre  
Amp  
+
IN  
OUT  
Figure 4: Typical Connection Configuration for PA4401  
STARTUP  
At Startup, the Power supply ramps from 0V to VCC between 20 -200ms. The PA4401 detects the ramp in the voltage at its inputs  
and controls the ramp rate of the DC bias voltage going to the +ve terminal of the bypass capacitor. The ramping behavior of the  
device can be controlled by an external capacitor. This startup operation is shown in figure 5.  
SHUTDOWN  
At Shutdown, The PA4401 detects a “power fail” condition and the control switches are turned off, opening the connection  
between INx and OUTx providing a discharge path through an internal 100Kꢀ resistor for the bypass capacitor. The time  
constant of the internal resistor and by-pass capacitor, allows for a slow discharge, which will prevent any audible “pop”  
appearing at the system output. This shutdown operation is shown in figure 5.  
t
t
50mS  
50mS  
VCC  
Power Supply Waveform  
0
VCC  
PA4401 slows  
down transition at  
coupling capacitor  
Bypass capacitor input plate  
System output  
<50mV  
Start-up “pop”  
0
<50mV  
shutdown “pop”  
time  
mSec  
Figure 5: Power-Up and Power-Down sequences and waveforms with PA4401  
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  
PA4401  
Click-Pop Suppression Device  
ANALOG PRODUCTS DIVISION  
Test Circuit for Turn-On time vs. CEXT and Turn-Off Time vs. CEXT  
VDD  
VINx  
INx  
VOUTx  
90%  
VOUTx  
Control  
Element  
50%  
50%  
CEXT  
10%  
tON  
tOFF  
R1  
1Mꢀ  
C1  
Turn-On time vs. Cext  
Turn-Off time vs. Cext  
800  
60  
50  
40  
30  
20  
10  
0
700  
600  
500  
400  
300  
200  
100  
0
1
10  
100  
Capacitor Value (nF)  
1000  
10000  
1
10  
100  
1000  
10000  
Capacitor Value (nF)  
CEXT (nF)  
1
tON (mS)  
3.6  
tOFF (mS)  
23  
23  
28  
32  
48  
10  
12  
100  
42  
1000  
2200  
300  
690  
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  
PA4401  
Click-Pop Suppression Device  
ANALOG PRODUCTS DIVISION  
SO-8 PACKAGE OUTLINE & DIMENSIONS  
PACKAGE OUTLINE  
SO-8  
-A-  
8
5
0.0I0” (0.25 MM)  
B
M
+
M
PACKAGE DIMENSIONS  
-B -  
P
4 PL  
MILLIMETERS  
INCHES  
I
4
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  
5.00  
4.00  
1.75  
0.49  
1.250  
0.189  
0.150  
0.054  
0.014  
0.016  
0.196  
0.157  
0.068  
0.019  
0.049  
D
G
C
45  
1.27 BSC 1.27 BSC 0.05 BSC 0.05 BSC  
0.18  
0.10  
5.80  
0.25  
0.25  
0.25  
6.20  
0.50  
0.007  
0.004  
0.229  
0.010  
0.009  
0.008  
0.244  
0.019  
0 - I0  
-T-  
J
F
NOTES  
0.0I0” (0.25 MM)  
T B  
A
S S  
M
+
8 PL  
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.  
MOUNTING PAD  
0.050 + 0.005”  
0.030 + 0.005”  
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.  
0.I60 + 0.005”  
0.245” M!"  
Outline & Dimensions: Rev 1 - 11/01, 06009  
0.045 + 0.005”  
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  
PA4401  
Click-Pop Suppression Device  
ANALOG PRODUCTS DIVISION  
Package Outline and Dimensions DFN-8  
Dim  
MILLIMETERS  
MIN  
TYP  
3.00  
3.00  
0.75  
0.25  
0.40  
0.02  
0.65  
2.30  
1.55  
MAX  
L1  
P1  
P2  
P3  
L1  
L2  
L3  
p
2.95  
2.95  
0.70  
0.23  
0.35  
0.02  
0.60  
2.25  
1.50  
3.05  
3.05  
0.80  
0.27  
0.45  
0.02  
0.70  
2.35  
1.60  
p
P1  
L2  
PA4401  
P2  
G2  
XXXX  
G1  
G2  
Pin 1 Indicator  
4
1
0.30mm  
0.65mm  
G1  
TOP VIEW  
BOTTOM VIEW  
0.60mm  
1.85mm  
L3  
P3  
2.74mm  
SIDE VIEW  
2.60mm  
Recommended Land Pattern  
Tape and Reel Specifications  
Reel Dia  
A0  
B0  
K0  
D
E
F
W
P0  
P2  
P
t-max  
0.25  
178 (7”)  
3.00±0.10  
3.00±0.10  
0.85±0.10  
1.50±0.10  
1.75±0.10  
3.50±0.05  
12.00±0.30  
4.00±0.10  
2.00±0.05  
4.00±0.10  
10 Pitches Cumulative  
Tolerance on Tape± 0.2  
P0  
P2  
D
t
E
Pin 1  
Top cover tape  
indicated  
by Dot  
A0  
F
W
K0  
B0  
P
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.  
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  

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