AN7158中文资料
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s Overview
The AN7158N is an integrated circuit designed for power amplifier of 7.5W (16V, 4Ω) output with low noise and low distortion, and it suits TV set with multi-sound.Stereo operation is enabled due to incorporating two amplifiers on one chip. 12-pin SIL package enabled com-pact and high-densely mounted set.
s Features
• Incorporating protection circuits (surge, thermal protec-
tion and etc.)
• Automatic operating point stabilizer circuit • Low distortion, low 1/f noise
• Low shock noise from power ON/OFF operation • Better channel separation • Fewer external components
AN7158N
Dual 7.5W Audio Power Amplifier Circuit
s Block Diagram
AN7158N
s Absolute Maximum Ratings (Ta= 25˚C)
V CC V CC I CC P D T opr T stg
Supply Voltage Note 1)Supply Voltage Note 2)Supply Current
Power Dissipation (Ta= 45˚C)Operating Ambient Temperature Storage Temperature
V V A W ˚C ˚C
Parameter
Symbol Rating Unit 2420430– 30 ~ + 75– 55 ~ + 150
Note 1) Without signal V CC = 24V (For non-stabilized supply)Note 2) Operation V CC = 20V (For stabilized supply)
Quiescent Circuit Current Voltage Gain Output Power
Total Harmonic Distortion Output Noise Voltage Channel Balance Separation
Ripple Rejection Ratio
I CQ G V P O THD V no CB Sep.RR
V i = 0mV V i = 3mV THD = 10%V i = 3mV R g = 10k Ωf = 60Hz, R g = 600Ω
40524.8
45
70545.50.15105040
12056
131mA dB W %mV dB dB dB
Parameter
Symbol Condition
min.typ.max.Unit • V CC =13.2V, R L = 4Ω, f =
1kHz
V i = 3mV
Quiescent Circuit Current Voltage Gain Total Harmonic Distortion Output Noise Voltage Crosstalk
I CQ G V THD V no CT
V i = 0mV V i = 4mV THD = 10%R L = 4Ω, THD = 10%V i = 4mV R g = 10k Ω
V i = 4mV, R g = 10k Ω
40524
45
80544.57.50.11
14056
13mA dB W W %mV dB
Parameter
Symbol Condition
min.typ.max.Unit • V CC =16V, R L = 8Ω, f =1kHz
Output Power
P O s Electrical Characteristics (Ta = 25˚C)403632282420
1612840Ambient Temperature Ta (˚C)
P o w e r D i s s i p a t i o n P D (W )
P D – Ta
AN7158N
P O , THD – V i
100
3010310.30.10.03
0.01
Input Voltage V i (mV)O u t p u t P o w e r P O (W ), T o t a l H a r m o n i c D i s t o r t i o n T H D (%)
P O , I CQ – V CC
Supply Voltage V CC (V)O u t p u t P o w e r P O (W )
140120
100806040200Q u i e s c e n t C i r c u i t C u r r e n t I C Q (m A )
P D – P O
4.03.63.22.82.42.01.61.20.80.40Output Power P O (W)
P o w e r D i s s i p a t i o n (S i n g l e C h a n n e l O p e r a t i o n ) P D (W )
THD, G V – f
Frequency f (Hz)T o t a l H a r m o n i c D i s t o r t i o n T H D (%), V o l t a g e G a i n R e s p o n s e ,G V (d B )
P O , THD – V i
100301031
0.30.10.030.01
Input Voltage V i (mV)
O u t p u t P o w e r P O (W ), T o t a l H a r m o n i c D i s t o r t i o n T H D (%)G V , THD – f
Frequency f (Hz)T o t a l H a r m o n i c D i s t o r t i o n T H D (%), V o l t a g e G a i n R e s p o n s e G V (d B )
8.0
6.45.64.8
4.03.22.4
1.6
0.80P o w e r D i s s i p a t i o n (D u a l O p e r a t i o n ) P D (W )
THD – P O
1005030
1053
10.50.3
0.1 Output Power P O (W)T o t a l H a r m o n i c D i s t o r t i o n T H D (%)
V no – R g
Source Resistance R g (Ω)
O u t p u t N o i s e V o l t a g e V n o (m V )
AN7158N
Ch.1R L
Ch.2R L
Ch.1Input
Ch.2Input
s Printed Circuit Board Layout
Pin No.Pin Name
1234
56
V CC
Output Ch.1GND Input Ch.1N.F.B Ch.1Bootstrap Ch.1
Pin No.Pin Name
789101112
Bootstrap Ch.2N.F.B Ch.2Input Ch.2GND Output Ch.2Ripple Filter
s Pin Descriptions。
