ICs for Cassette, Cassette Deck
AN7086S
Recording/Playback Pre-/Power Amplifier IC for 3V Microcassette
s
Overview
The AN7086S is an integrated circuit developed for
recording playback pre-/power amp., built-in VAS (Voice
Activated System) function especially.
0.45
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
2.0±0.2
Unit : mm
s
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
switch
0.4±0.25
circuit
0.1±0.1
1.27
0.3
7.2±0.3
9.4±0.3
24-Lead SOP Package (SOP024-P-0375)
s
Block Diagram
GND
24
23
22
21
20
NC
19
18
17
1/2 V
CC
16
15
V
CC
14
13
+
55dB
–
–
+
Open
Loop
Gain
74dB
ALC
R/P
Cont.
Ripple
Rej.
+
20dB
–
+
14dB
–
120kΩ
+
24dB
–
+
14dB
–
VAS
Det.
Power
Mute
1
2
3
4
5
6
7
8
9
10
Power
GND
11
Power
V
CC
0.15
0.925
12
15.3±0.3
AN7086S
s
Absolute Maximum Ratings
(Ta=25˚C)
Parameter
Supply Voltage
Supply Current
Power Dissipation
Operating Ambient Temperature
Storage Temperature
Symbol
V
CC
I
CC
P
D
T
opr
T
stg
ICs for Cassette, Cassette Deck
Rating
6
1000
520
–20 ~ + 75
–55 ~ + 125
Unit
V
mA
mW
˚C
˚C
s
Recommended Operating Range
(Ta= 25˚C)
Parameter
Operating Supply Voltage Range
Symbol
V
CC
Range
1.8V ~ 4.5V
s
Electrical Characteristics
(V
CC
=3V, f=1kHz, Ta=25˚C)
Parameter
Quiescent Circuit Current
<Pre-Amp.>
Open Circuit Gain
Total Harmonic Distortion
Maximum Output Voltage
Noise Voltage Referred to Input
<Recording Amp.>
Close Circuit Gain
Total Harmonic Distortion
Maximum Output Voltage
Output Noise Voltage
<Power Amp.>
Closed Circuit Gain
Total Harmonic Distortion
Maximum Output Voltage
Output Noise Voltage
Output Offset Voltage
<VAS>
VAS Operation Input Voltage
<ALC>
Effective Voltage
Effective width
<Ripple Rejection>
Playback System Ripple Rejection
Recording System Ripple Rejection
<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
RR
P
RR
R
f
r
= 270Hz, V
r
= 30mVrms,
R
g
= 1kΩ
f
r
= 270Hz, V
r
= 30mVrms,
R
g
= 2.2kΩ
–70
–40
–50
–30
dBV
dBV
V
ALC
W
ALC
V
in
= – 60dBV, R
g
= 1.5kΩ
V
in
= – 30dBV, R
g
= 1.5kΩ
–6.6
–4.5
1.5
–2.5
3
dBV
%
VAS
Mic. input level at Piny
Voltage= 0.2V
8
14
18
µVrms
G
V
– P
O
THD – P
O
V
O
– P
O
V
n
– P
O
V
DC
V
in
= 5mVrms, R
L
= 8Ω
V
in
= 5mVrms, R
L
= 8Ω
THD = 10%, R
L
= 8Ω
R
g
= 0Ω, R
L
= 8Ω,
DIN/AUDIO Filter
R
g
= 0Ω, R
L
= 8Ω,
300
38.5
41
0.11
350
–74
–50
0
–65
50
43.5
1
dB
%
mW
dBV
mV
G
V2
THD
R
V
oR
V
nR
V
in
= – 80dBV
V
in
= – 80dBV
THD = 5%
R
g
= 2.2kΩ,
DIN/AUDIO Filter
0.8
69.5
72.5
1.3
1.08
–46
–42
75.5
3
dB
%
Vrms
dBV
G
V1
THD
1
V
O1
V
ni
V
in
= – 85dBV, R
g
= 1kΩ
V
in
= 3mVrms, R
g
= 1kΩ
THD= 1%, R
g
= 1kΩ
R
g
= 1kΩ,
DIN/AUDIO Filter
0.3
65
74
0.1
0.6
1
1.8
1
dB
%
Vrms
µVrms
Symbol
I
tot
Condition
At No Input/Playback
min.
10
typ.
20
max.
35
Unit
mA
ICs for Cassette, Cassette Deck
s
Characteristics Curve
Pre. Amp.
Input/Output Characteristics
V
out
, THD-V
in
10
5
3
Output Voltage V
out
(Vrms)
V
CC
=3V
R
L
=50kΩ
f
req.
=1kHz
100
10
AN7086S
Power Amp.
Input/Output Characteristics
V
out
, THD-V
in
V
CC
=3V
R
L
=80Ω
f
req.
=1kHz
100
10
Rec. Amp.
Input/Output Characteristics
V
out
, THD-V
in
V
CC
=3V
f
req.
=1kHz
R
L
=10kΩ
100
Total Harmonic Distortion THD (%)
Total Harmonic Distortion THD (%)
1
0.5
0.3
V
O
0.1
0.05
0.03
THD
10
1
10
1
10
3
0.3
V
O
3
0.3
V
out
THD
3
1
0.1
1
0.1
1
0.3
0.03
THD
0.3
0.03
0.3
0.01
0.1
0.3 0.5
1
3
5
10
0.1
0.01
0.3
1
3
10
30
0.1
100
0.01
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.
Frequency Characteristics
G
V
, THD – f
Maximum Output Voltage V
O max.
(Vrms)
50
Voltage Gain G
V
(dB)
V
CC
=3V
R
L
=150kΩ
V
out
= –10dBV
Total Harmonic Distortion THD (%)
Pre. Amp.
Maximum Output Voltage
V
O max.
– V
CC
1.2
1.0
0.8
0.6
0.4
0.2
0
f
req.
=1kHz
R
L
=50kΩ
THD=1%
40
G
V
30
3
2
THD
10
30
100
300
1k
3k
10k
30k
1
0
100k
0
1
2
3
4
5
6
Frequency f (Hz)
Supply Voltage V
CC
(V)
Pre. Amp.
Supply Voltage Characteristics
V
CC
– G
V
, THD
G
V
V
O
= –10dBV
f
req.
=1kHz
R
L
=50kΩ
50
Total Harmonic Distortion THD (%)
Voltage Gain G
V
(dB)
Power Amp.
Frequency Characteristics
G
V
, THD – f
V
CC
=3V
R
L
=8Ω
V
O
= –10dBV
V
O
40
4
30
THD
3
2
1
10
30
100
300
1k
3k
10k
30k
100k
40
38
Voltage Gain G
V
(dB)
36
34
32
3
2
THD
1
0
30
0
1
2
3
4
5
6
Supply Voltage V
CC
(V)
Frequency f (Hz)
Total Harmonic Distortion THD (%)
Total Harmonic Distortion THD (%)
30
3
Output Voltage V
out
(Vrms)
30
3
Output Voltage V
out
(Vrms)
30
AN7086S
Power Amp.
Maximum Output Power
P
O max.
– V
CC
1.2
Voltage Gain G
V
(dB)
Maximum Output Power P
O max.
(W)
THD=10%
f
req.
=1kHz
1.0 R =8Ω
L
0.8
0.6
0.4
0.2
0
44
42
40
38
ICs for Cassette, Cassette Deck
Power Amp.
Supply Voltage Characteristics
G
V
, THD – V
CC
V
O
=10dBV
f
req.
=1kHz
R
L
=8Ω
G
V
Total Harmonic Distortion THD (%)
Total Harmonic Distortion THD (%)
THD
5
4
3
2
1
0
4
5
6
0
1
2
3
4
5
6
0
1
2
3
Supply Voltage V
CC
(V)
Supply Voltage V
CC
(V)
Rec. Amp.
Frequency Characteristics
G
V
, THD – f
Maximum Output V
O max.
(Vrms)
V
CC
=3V
V
O
=–5dBV
R
L
=10kΩ
Voltage Gain G
V
(dB)
70
Rec. Amp.
Maximum Output Voltage
V
O max.
– V
CC
80
2.4
Total Harmonic Distortion THD (%)
G
V
THD=10%
f
req.
=1kHz
2.0 R =10kΩ
L
1.6
1.2
0.8
0.4
0
60
THD
50
4
3
2
1
40
10
100
1k
Frequency f (Hz)
10k
0
100k
0
1
2
3
4
5
6
Supply Voltage V
CC
(V)
Rec. Amp.
Supply Voltage Characteristics
G
V
, THD – V
CC
Output Voltage V
out
(dBV)
0
80
Voltage Gain G
V
(dB)
76
72
68
64
60
0
1
2
3
4
5
6
THD
5
4
3
2
1
0
V
O
=5dB
f
req.
=1kΩ
R
L
=10kΩ
Total Harmonic Distortion THD (%)
G
V
ALC
Input/Output Characteristics
V
out
, THD – V
in
V
CC
=3V
f
req.
=1kHz
–2 R =10kΩ
L
–4
–6
–8
THD
5
4
3
2
1
0
V
out
–80
–60
–40
–20
0
Supply Voltage V
CC
(V)
Input Voltage V
in
(dBV)
ICs for Cassette, Cassette Deck
s
Application Circuit
0.0056µF
AN7086S
0.0047µF
1MΩ
10kΩ
4.7µF
+
+
0.01µF
2.2µF
Mic.
+
+
0.1µF
24
23
33µF
+
4.7µF
14kΩ
Rec.
1.5kΩ
PLAY
V
CC
220µF
220µF
+
220µF
+
15
14
13
Head
22
21
20
19
18
17
16
AN7086S
1
40kΩ
0.033µF
2.2kΩ
4.7kΩ
0.22µF +
82Ω
+
33µF
PAUSE
+
to Motor
0.01µF
VAS
OFF
V
CC
Speaker
8Ω
2
+
3
0.22µF
+
47µF
+
4.7µF
2.2µF
+
33µF
+
33µF
4
5
6
7
8
9
10
11
12
s
Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
Pin Name
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
Pin No.
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
Pin Name
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