Read Harman Kardon AVR 171 (serv.man3) Service Manual online
BD3812F
Audio ICs
Rev.A
2/2
zElectrical Characteristics
(Unless otherwise noted, Ta=25
°C, V
CC
=7V, V
EE
=-7V, f=1kHz, V
IN
=1Vrms,
RL=10k
Ω, Rg=600Ω, Master volume=0dB, Output gain=0dB)
7pin
5pin
No signal
Circuit current
Measure : Pin13, 14
Output voltage gain
Measure : Pin13, 14, BW
=
400
∼
30kHz
Total harmonic distortion ratio
Measure : Pin13, 14, THD
=
1%
Maximum output voltage
Measure : Pin13, 14, Rg
=
0
Ω
, BW
=Ι
HF
−
A
Output noise voltage
Measure : Pin1, 3
Input impedance
Measure : Pin13(OUT2), Rg
=
0
Ω
, BW
=
IHF
−
A,
Reference : Pin14(OUT1)
=
1Vrms
Cross-talk between channels
Measure : Pin13, 14, V
IN
=
3Vrms
Volume control range
BW=IHF
−
A, Measure : Pin13, 14, V
IN
=
3Vrms
Maximum attenuation
Measure : Pin13, 14, V
IN
=
0.4Vrms
Output gain control range
IQ
G
V
THD
Vomax
Vno
Rin
CTC
GVR
Vmin
GOG
Symbol
−
−
2
−
3.4
−
20
−
−
106
−
16
Min.
6
0.09
−
5
40
−
70
−
100
−
105
20
Max.
mA
dB
%
Vrms
µ
Vrms
k
Ω
dB
dB
dB
dB
Unit
Conditions
2
0
0.005
4.2
1.2
30
−
100
−
103
−
118
18
Typ.
Parameter
+
2
zApplication circuit diagram
14
OUT1
13
OUT2
12
SEL
DGND
MUTE
11
10
DA
V
CC
V
EE
AGND
AGND
AGND
IN 1
9
CL
8
7
6
5
4
2
LOGIC
+
+
47µ
10µ
IN 2
+
10µ
+
47µ
3
1
BD3812F
UNIT
CAPACITOR : F
+
+
−
−
Harman Kardon
AVR 171 Service Manual
Page 115 of 174
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