Harman Kardon AVR 230, Service Manual

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Technical Note
6/9
www.rohm.com
2010.06 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
BD3812F
-10
-8
-6
-4
-2
0
2
4
6
8
10
10 100 1000 10000 100000
FREQUENCY (Hz)
GAI
N
(d
B
)
0.001
0.01
0.1
1
10
0.001 0.01 0.1 1 10
INPUT VOLTAGE (Vrms)
OU
T
PU
T
V
O
LT
AGE
(V
rm
s)
-5
0
5
10
15
20
10 100 1000 10000 100000
FREQUENCY (Hz)
GAIN (d
B)
0.0001
0.001
0.01
0.1
1
10
0.001 0.01 0.1 1 10
INPUT VOLTAGE (Vrms)
THD+
N (
%)
-2.5
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
2.5
0 2 4 6 8 10
POWER SUPPLY (V)
CIRCUIT CURRE
NT
(m
A
)
●
Application circuit
UNIT
RESISTOR :
Ω
CAPACITOR : F
Fig.2
●
Reference data
LOGIC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
CL
DA
MUTE
SEL
DGND
OUT1
OUT2
10µ
10 μ
V
EE
AGND
V
CC
IN1
IN2
47 μ
47µ
AGND
AGND
Fig.3 Circuit current - Power supply
Fig.4 Voltage gain - Frequency
Fig.5 Output voltage - Input voltage
Fig.6 THD+N - Input voltage
Fig.7 Output gain - Frequency
VCC
VEE
0, 6 ～ 18dB
2dB/step
Harman Kardon AVR 365/230V Service Manual
Page 105 of 176