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ICs for Cassette, Cassette Deck
AN7086S
Recording/Playback Pre-/Power Amplifier IC for 3V Microcassette
Overview
The AN7086S is an integrated circuit developed for
recording playback pre-/power amp., built-in VAS (Voice
Activated System) function especially.
Unit : mm
1
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8
9
10
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24
23
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Features
•
Rec. playback pre-/power amp. IC
•
VAS function built-in
•
Earphone monitor at recording is possible
•
350mW BTL, OCL power amp. built-in
•
Mic. amp built-in
•
ALC function built-in
•
Rec./Play switching is possible with a single circuit
switch
0.3
7.2±0.3
9.4±0.3
24-Lead SOP Package (SOP024-P-0375)
n
Block Diagram
GND
NC
1/2 V
CC
V
CC
24
23
22
21
20
19
18
17
16
15
14
13
+
55dB
–
ALC
R/
P
Cont.
Rip
p
le
Rej.
–
+
Open
Loop
Gain
74dB
+
20dB
–
+
14dB
–
+
24dB
–
+
14dB
–
120k½
V
A
S
Det.
Po
w
er
Mute
1
2
3
4
5
6
7
8
9
10
11
12
Power
GND
Power
V
CC
n
n
AN7086S
ICs for Cassette, Cassette Deck
n
Absolute Maximum Ratings
(Ta=25˚C)
Parameter
Symbol
Rating
Unit
Supply Voltage
Supply Current
Power Dissipation
Operating Ambient Temperature
Storage Temperature
V
CC
I
CC
P
D
T
opr
T
stg
6
1000
520
–20 ~ + 75
–55 ~ + 125
V
mA
mW
˚C
˚C
n
Recommended Operating Range
(Ta= 25˚C)
Parameter
Symbol
Range
Operating Supply Voltage Range
V
CC
1.8V ~ 4.5V
n
Electrical Characteristics
(V
CC
=3V, f=1kHz, Ta=25˚C)
Parameter
Symbol
Condition
min.
typ.
max.
Unit
Quiescent Circuit Current
<Pre-Amp.>
Open Circuit Gain
Total Harmonic Distortion
Maximum Output Voltage
I
tot
At No Input/Playback
10
20
35
mA
G
V1
THD
1
V
O1
V
in
= – 85dBV, R
g
= 1k½
V
in
= 3mVrms, R
g
= 1k½
THD= 1%, R
g
= 1k
65
74
0.1
0.6
1
dB
%
Vrms
½
0.3
Noise Voltage Referred to Input
V
ni
,
DIN/AUDIO Filter
½
1
1.8
µVrms
<Recording Amp.>
Close Circuit Gain
Total Harmonic Distortion
Maximum Output Voltage
G
V2
THD
R
V
oR
V
nR
V
in
= – 80dBV
V
in
= – 80dBV
THD = 5%
R
g
= 2.2k½ ,
DIN/AUDIO Filter
69.5
72.5
1.3
1.08
75.5
3
dB
%
Vrms
0.8
Output Noise Voltage
–46
–42
dBV
<Power Amp.>
Closed Circuit Gain
Total Harmonic Distortion
Maximum Output Voltage
G
V
– P
O
THD – P
O
V
O
– P
O
V
in
= 5mVrms, R
L
= 8½
V
in
= 5mVrms, R
L
= 8
38.5
41
0.11
350
43.5
1
dB
%
mW
½
THD = 10%, R
L
= 8½
R
g
= 0½ , R
L
= 8½ ,
DIN/AUDIO Filter
R
g
= 0½ , R
L
= 8½ ,
300
Output Noise Voltage
V
DC
–74
–65
dBV
Output Offset Voltage
<VAS>
–50
0
50
mV
VAS Operation Input Voltage
VAS
Mic. input level at Piny
Voltage= 0.2V
8
14
18
µ
Vrms
<ALC>
Effective Voltage
Effective width
<Ripple Rejection>
V
ALC
W
ALC
V
in
= – 60dBV, R
g
= 1.5k½
V
in
= – 30dBV, R
g
= 1.5k
–6.6
–4.5
1.5
–2.5
3
dBV
%
½
Playback System Ripple Rejection
RR
P
f
r
= 270Hz, V
r
= 30mVrms,
R
g
= 1k½
f
r
= 270Hz, V
r
= 30mVrms,
R
g
= 2.2k½
–70
–50
dBV
Recording System Ripple Rejection
RR
R
–40
–30
dBV
<Switching Pin>
Rec./Playback Switching Pin
Rec./Playback Switching Pin
V
PB
V
REC
Playback mode
Recording mode
0.1
1.6
0.3
2.3
V
V
R
g
= 1k
V
n
– P
O
ICs for Cassette, Cassette Deck
AN7086S
n
Characteristics Curve
Pre. Amp.
Power Amp.
Rec. Amp.
Input/Output Characteristics
V
out
, THD-V
in
Input/Output Characteristics
V
out
, THD-V
in
Input/Output Characteristics
V
out
, THD-V
in
10
100
10
100
10
100
V
CC
=3V
R
L
=5
0
k½
f
req.
=1kHz
V
CC
=3V
R
L
=8
0
½
f
req.
=1kHz
V
CC
=3V
f
req.
=1
k
Hz
R
L
=10k½
5
3
30
3
30
3
30
1
10
1
10
1
10
0.5
0.3
3
0.3
V
O
3
0.3
V
out
3
V
O
THD
0.1
0.05
0.03
1
0.1
1
0.1
1
THD
0.3
0.03
THD
0.3
0.03
0.3
0.01
0.1
0.01
0.1
0.01
0.1
0.3 0.5 1
3
5 10
0.3
1
3
10
30
100
0.003 0.01
0.03
0.1
0.3
1
Input Voltage V
in
(mVrms)
Input Voltage V
in
(mVrms)
Input Voltage V
in
(mVrms)
Pre. Amp.
Pre. Amp.
Frequency Characteristics
G
V
, THD – f
Maximum Output Voltage
V
O max.
– V
CC
1.2
50
V
CC
=3V
R
L
=150k½
V
out
= –10dBV
1.0
f
req.
=1kHz
R
L
=50k½
THD=1%
40
0.8
G
V
0.6
30
3
2
1
0.4
0.2
THD
10
30
100 300
1k
3k
10k
30k 100k
0
0
0
1
2
3
4
5
6
Frequency f (Hz)
Supply Voltage V
CC
(V)
Pre. Amp.
Power Amp.
40
Supply Voltage Characteristics
V
CC
– G
V
, THD
Frequency Characteristics
G
V
, THD – f
V
O
= –10dBV
f
req.
=1kHz
R
L
=50k½
V
CC
=3V
R
L
=8½
V
O
= –10dBV
38
50
G
V
V
O
36
40
34
3
4
3
2
32
2
30
THD
THD
30
1
1
0
1
2
3
4
5
6
0
10
30
100 300
1k
3k
10k 30k 100k
Supply Voltage V
CC
(V)
Frequency f (Hz)
AN7086S
ICs for Cassette, Cassette Deck
Power Amp.
Power Amp.
Maximum Output Power
P
O max.
– V
CC
Supply Voltage Characteristics
G
V
, THD – V
CC
1.2
THD=10%
f
req.
=1kHz
R
L
=8
V
O
=10dBV
f
req.
=1kHz
R
L
=8
44
1.0
½
½
42
G
V
0.8
40
0.6
5
38
4
0.4
3
2
0.2
THD
1
0
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Supply Voltage V
CC
(V)
Supply Voltage V
CC
(V)
Rec. Amp.
Rec. Amp.
80
Frequency Characteristics
G
V
, THD – f
2.4
Maximum Output Voltage
V
O max.
– V
CC
V
CC
=3V
V
O
=–5dBV
R
L
=10k½
THD=10%
f
req.
=1kHz
R
L
=10k
2.0
½
G
V
70
1.6
60
4
1.2
THD
3
0.8
50
2
1
0.4
40
10
100
1k
10k
100k
0
0
0
1
2
3
4
5
6
Frequency f (Hz)
Supply Voltage V
CC
(V)
Rec. Amp.
ALC
Supply Voltage Characteristics
G
V
, THD – V
CC
Input/Output Characteristics
V
out
, THD – V
in
0
V
O
=5dB
f
req.
=1k
V
CC
=3V
f
req.
=1kHz
R
L
=10k½
80
½
R
L
=10k
–2
½
76
G
V
–4
V
out
72
–6
68
5
5
4
–8
4
64
THD
3
THD
3
2
2
60
1
1
0
1
2
3
4
5
6
0
–80
–60
–40
–20
0
0
Supply Voltage V
CC
(V)
Input Voltage V
in
(dBV)
ICs for Cassette, Cassette Deck
AN7086S
n
Application Circuit
0.00
4
7
µ
F
33µF
14k½
Rec.
1.5k½
PLAY
0.01
µ
F
+
1M½
2.2µF
4.7
µ
+
+
Mic.
10k½
V
CC
220µF
+
2
20
µ
F
2
20
µ
F
0.1µF
4.7
µ
F
Head
+
+
+
24
23
22
21
20
19
18
17
16
15
14
13
AN7086S
1
2
3
4
5
6
7
8
9
10
11
12
40k
½
+
0.
22µ
F
+
+
0.033µ
F
4.7µF
2.2µF
33µF
4.7k½
2.2k
½
+
0.22µF
+
82
½
0.01µF
33
µ
+
VAS
OFF
33
µ
F
V
CC
Speaker
8½
PAUSE
47µF
to Motor
n
Pin Descriptions
Pin No.
Pin Name
Pin No.
Pin Name
1
2
3
4
5
6
7
8
9
10
11
12
Pre-Amp. NF Pin
Pre-Amp. Output Pin
Power Amp. Input Pin
Power Amp. NF Pin
VAS Detection
MOTOR Output Pin
Power Mute Pin
Power Output 1 Pin
B.S.1
Power GND
Power V
CC
Power Output 2-pin
13
14
15
16
17
18
19
20
21
22
23
24
B.S.2
V
CC
Filter Pin
Center
Rec./Play Switching Pin
ALC Detection
NC
Rec. Amp. Output Pin
Mic. Amp. NF Pin
Mic. Amp. Input Pin
Pre. GND
Pre. Amp. Input Pin
F
F
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