Contek TBA820M Datasheet
TBA820M LINEAR INTEGRATED CIRCUIT
1.2W AUDIO POWER AMPLIFIER
DESCRIPTION
The Contek TBA820M is a monolithic integrated audio
amplifier.
It is designed for audio frequency class b amplifier.
FEATURES
*Wide operating supply voltage:Vcc=3~14V
*Medium output power
Po=1.2W at Vcc=9V,R
*Low quiesent circuit current:I
*Good ripple rejection.
*Minimum number of external parts required.
BLOCK DIAGRAM
L=8 ohm ,Thd=10%
CCQ=4mA(type)
DIP-8
Ripple Bootstrap Vcc Output
8 7 6 5
Contek
TBA820M
1 2 3 4
CB NF Input GND
ABSOLUTE MAXIMUM RATINGS(Ta=25 C)
PARAMETER SYMBOL VALUE UNIT
Supply Voltage Vcc 16 V
Output Peak Current Ipeak 1.5 A
Power Dissapation PD 1.25 W
Operating Temperature Topr -20 ~ +70 C
Storage Temperature Tstg -40 ~ +150 C
Contek Microelectronics Co.,Ltd.
CONTEK
http://www.contek-ic.com E-mail:sales@contek-ic.com
1
TBA820M LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS(Ta=25 C,Vcc=9V,f=1kHz,RG=600W,RF=120W,RL=8W,unless
otherwise specified)
Quiescent Circuit Current ICCQ VI=0 4 12 mA
Output Power Po
Total Harmonic Distortion THD Po=500mW 0.3 1 %
Open Loop Voltage Gain Gvo RF=0 75 dB
Closed Loop Voltage Gain Gvc
Input Resistance RI 5
Output Noise Voltage VNO
TEST CIRCUIT
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Vcc=9V,R L=4W,THD=10%
Vcc=9V,R L=8W,THD=10%
Vcc=6V,R
Vcc=6V,R L=8W,THD=10%
Vcc=12V,R L=8W,THD=10%
L=4W,THD=10%
F=120W
R
RG=10kW
BW(-3dB)=50~20kHz
1.6
0.9 1.2
0.75 W
0.4 0.5
2
33 36 39 dB
MW
0.3 1 mW
VCC
INPUT
10K W
100mF/16V
R1
6
3
Contek TBA820M
2
RF
120
100 mF/10V
7
4
W
56
R3
W
1
8
CB
5
47 mF/
10V
(Bootstrap
Cap)
0.1 m F
220 mF/15V
R2
W
1
0.1mF
100mF/15V
OUTPUT
RL
4
W
CONTEK
Contek Microelectronics Co.,Ltd.
http://www.contek-ic.com E-mail:sales@contek-ic.com
2
Loading...