UNISONIC TECHNOLOGIES CO.,
TBA820M
1.2W AUDIO POWER
AMPLIFIER
DESCRIPTION
The UTC
TBA820M
is a monolithic integrated audio
amplifier. It is designed for audio frequency class b amplifier.
LINEAR INTEGRATED CIRCUIT
SOP-8
FEATURES
*Wide operating supply voltage: Vcc=3~14V
*Medium output power
P
OUT
=1.2W at Vcc=9V,R
L
=8Ω, THD=10%
*Low quiescent circuit current: I
Q
=4mA(type)
*Good ripple rejection.
*Minimum number of external parts required.
DIP-8
*Pb-free plating product number: TBA820ML
ORDERING INFORMATION
Order Number
Normal
Lead Free Plating
TBA820M-S08-R
TBA820ML-S08-R
TBA820M-S08-T
TBA820ML-S08-T
TBA820M-D08-T
TBA820ML-D08-T
Package
SOP-8
SOP-8
DIP-8
Packing
Tape Reel
Tube
Tube
BLOCK DIAGRAM
Ripple
Bootstrap Vcc
Output
8
7
6
5
1
CB
2
NF
3
Input
4
GND
www.unisonic.com.tw
Copyright © 2005 Unisonic Technologies Co.,
1
QW-R107-008.C
TBA820M
ABSOLUTE MAXIMUM RATINGS
(T
a
=25°C)
PARAMETER
LINEAR INTEGRATED CIRCUIT
SYMBOL
RATINGS
UNIT
Supply Voltage
Vcc
16
V
Output Peak Current
I
O(peak)
1.5
A
Power Dissipation
P
D
1.25
W
Operating Temperature
T
OPR
-20 ~ +85
°C
Storage Temperature
T
STG
-40 ~ +150
°C
Note:1. Absolute maximum ratings are stress ratings only and functional device operation is not implied. The device
could be damaged beyond Absolute maximum ratings.
2. The device is guaranteed to meet performance specifications within 0℃~70℃ operating temperature range
and assured by design from –20℃~85℃.
ELECTRICAL CHARACTERISTICS
(T
a
=25°C, V
cc
=9V, F=1KHZ, R
G
=600Ω, R
F
=120Ω, R
L
=8Ω, unless otherwise specified.
PARAMETER
Quiescent Current
SYMBOL
I
Q
TEST CONDITIONS
V
IN
=0
Vcc=9V,R
L
=4Ω,THD=10%
Vcc=9V,R
L
=8Ω,THD=10%
Vcc=6V,R
L
=4Ω,THD=10%
Vcc=6V,R
L
=8Ω,THD=10%
Vcc=12V,R
L
=8Ω,THD=10%
P
OUT
=500mW
R
F
=0
R
F
=120Ω
R
G
=10kΩ, BW(-3dB)=50~20kHz
MIN
TYP
4
1.6
1.2
0.75
0.5
2
0.3
75
36
5
0.3
MAX
12
UNIT
mA
0.9
0.4
Output Power
P
OUT
W
Total Harmonic Distortion
Open Loop Voltage Gain
Closed Loop Voltage Gain
Input Resistance
Output Noise Voltage
THD
Gvo
Gvc
R
IN
eN
1
39
1
33
%
dB
dB
MΩ
mV
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2
QW-R107-008.C
TBA820M
TEST CIRCUIT
LINEAR INTEGRATED CIRCUIT
V
CC
100 F/16V
R3
56
0.1 F
INPUT
6
3
7
1
CB
(Bootstrap
Cap)
100 F/15V
OUTPUT
220 F/15V
R2
1
0.1 F
R
L
4
UTC TBA820M
R1
10K
5
2
R
F
120
4
8
100 F/10V
47
F/10V
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
3
QW-R107-008.C
TBA820M
TYPICAL CHARACTERISTICS
Fig 1 Quienscent circuit current vs
Supply Voltage
V
IN
=0
8
2.0
LINEAR INTEGRATED CIRCUIT
Fig 2 Output power vs Supply Voltage
1.6
R
L
=8
R
L
=4
R
L
=16
Quiescent Current(mA)
Output Power(W)
1.2
4
0.8
0.4
THD=10%
f=1kHz
R
F
=120
0
4
8
12
16
20
0
0
4
8
12
16
20
0
Supply Voltage(V)
Supply Voltage(V)
Fig 3 Total harmonic Distortion vs Output power
Vcc=9V
R
L
=8
16
R
F
=120
f=1kHz
12
Fig 4 Voltage Gain vs Feedback resistance
Vcc=9V
R
L
=8
f=1kHz
Total harmonic Distortion ( %)
Closed loop Voltage Gain(dB)
0.8
1.2
1.6
80
60
8
40
4
20
0
0
0.4
0
0
50
100
150
Output Power(W)
Feedback Resistance( )
Fig 5 Power Dissipation vs Output power
0.5
Fig 6 Power Dissipation vs Supply Voltage
1.0
Power Dissipation(W)
Power Dissipation(W)
R
L
=8
R
L
=4
0.5
R
L
=16
0.25
Vcc=9V
R
L
=8
f=1kHz
0
0
0.4
0.8
1.2
1.6
2.0
0
0
4
8
12
16
20
Output Power(W)
Supply Voltage(V)
4
QW-R107-008.C
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TBA820M
TYPICAL CHARACTERISTICS(CONT.)
LINEAR INTEGRATED CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Total Harminoc distortion(%)
Response(dB)
5
QW-R107-008.C
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