PANASONIC AN618

AN6182K, AN6182S
Unit : mm
■ Overview
The AN6182K and AN6182S are recording and playing
amplifier ICs for answering telephones. They incorporate an
ALC circuit, recording and playing amplifiers, a loudspeaker
amplifier, and a VOX circuit.
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
1.778
21.7±0.3
Recording and playing amplifier IC
for answering telephones
0.5±0.1
0.9±0.25
AN6182K
1.1±0.25
6.2±0.3
3.05±0.25
4.7±0.25
■ Features
• Incorporates recording and playing amplifiers.
• Incorporates a loudspeaker amplifier.
• Incorporates a VOX circuit.
• Incorporates a magnetic-head circuit to provide for one-tape
+ 0.1
0.30 – 0.05
7.62±0.25
3—15˚
SDIP package with 24 pins (SDIP024-P-0300)
cassette recording.
• Incorporates 4 control circuits.
Unit : mm
0.15
0.925
2.0±0.2
15.3±0.3
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
0.1±0.1
1.27
0.6±0.3
0.45
AN6182S
0.3
7.2±0.3
9.4±0.3
SOP package with 24 pins (SOP024-P-0375)
■ Block Diagram
PRE GND
24
PRE VCC
23
22
21
ALC
ALC
PRE
20
19
18
17
16
15
14
–
ALC
REC
+
Vcc
EQ
DET
MIC
13
LIN
Pre Amp.
–
VOX
+
+
DET
+
Vref
SP
1
Power VCC
2
LOGIC
–
3
Power GND
REG
Com
SPMUTE
4
5
6
PREMUTE
MIC
LIN
PLAY
REC
7
8
9
10
11
12
■ Absolute Maximum Ratings (Ta=25˚C)
Symbol
Rating
Supply voltage
Note 1)
Parameter
VCC
9.0
V
Supply current
Note 1)
ICC
600
mA
700
mW
338
mW
Power dissipation
Note 2)
AN6182K
PD
AN6182S
Operating ambient temperature
Storage temperature
Topr
AN6182K
Tstg
AN6182S
Unit
–20 to + 75
˚C
–55 to + 150
˚C
–55 to + 125
˚C
Note 1) The IC must be used under the condition VCC × ICC < PD.
Note 2) Ta=60˚C
■ Operating Supply Voltage Range
Parameter
Symbol
Range
VCC
4.5 to 9.6V
Operating supply voltage range
■ Electrical Characteristics
min
typ
max
MIC preamp. gain
Parameter
Symbol
GV
Vi=–64dBm
Condition
48.5
50.5
52.5
dB
MIC preamp. ALC output
VO
Vi=–30dBm
–11
–9
–7
dBm
MIC preamp. output noise voltage
Vno
DIN/AUDIO, Rg=10kΩ
1.2
2.5 mVrms
LIN preamp. gain
GV
Vi=–64dBm
48.5
50.5
52.5
dB
LIN preamp. ALC output
VO
Vi=–30dBm
–11
–9
–7
dBm
LIN preamp. output noise voltage
Vno
DIN/AUDIO, Rg=10kΩ
1.2
2.5 mVrms
VOX sensitivity (1)
VS1
Vi=–35dBm
VOX sensitivity (2)
VS2
Vi=–29dBm
REC head drive
GV
Rg=1kΩ, Vi=–10dBm
PRAY/EQ amp. gain
GV
Vi=–60dBm
PRAY/EQ amp. output noise voltage
Vno
DIN/AUDIO, Rg=10kΩ
POWER amp. gain
GV
Vi=–20dBm
14.5
17
POWER amp. max output voltage
VO
RL=8Ω, THD=5%
100
200
mW
POWER amp. output noise voltage
Vno
DIN/AUDIO, Rg=10kΩ
0.2
1.0 mVrms
Pre. VCC voltage
VCC
No signal, VCC=5V
3.6
4.0
4.4
V
∆PRE VCC voltage
VCC
– 0.25
– 0.07
0.1
V
Total circuit current (1)
Itotal-1
12
20
30
mA
Total circuit current (2)
Itotal-2
No signal, VCC=5V
ICC (Pre) =0 to 6mA
No signal
recording mode (SP ON)
No signal
recording mode (SP OFF)
2
3.3
5
mA
3.5
4.8
Unit
V
0.025
0.5
V
–18.7
–16.2
–13.7
dBm
39.5
41.5
43.5
dB
0.3
1.2 mVrms
19.5
dB
■ Pin Descriptions
Pin No.
Symbol
1
Power VCC
2
Power out
3
Power GND
4
Power NF
5
Power in
6
SP mute control
7
Preamp.
mute control
8
MIC/LIN
control
9
REC/PLAY
control
10
VOX out
11
VOX DET
12
VREF
13
EQ–amp. out
14
EQ–amp. NF
15
Head in/out
16
REC ADJ
17
VOX in
18
Pre out
19
Pre NF
20
ALC DET
Description
Loudspeaker amplifier power supply input
An external power supply connects to this pin. The input supply voltage range is 4.5 to 9V.
Loudspeaker amplifier output
This pin connects through an electrolytic capacitor to a loudspeaker with a load impedance of 8Ω or
more. This pin is effective only when Pin6 is high.
Loudspeaker amplifier ground
This pin connects to an external ground. This ground should be separated from that of the preamplifier circuits.
Loudspeaker amplifier inverse input
A combination of resistors and a capacitor connected between this pin and Pin2 and the ground
determines the gain and frequency characteristics of the loudspeaker amplifier.
Loudspeaker amplifier non-inverse input
Signals should be input to this pin through a capacitor. The expected input impedance is typically 27kΩ.
Loudspeaker amplifier mute control
If the voltage level at this pin is high, the loudspeaker amplifier turns ON, and if low, turns OFF.
Preamplifier mute control
If the voltage level at this pin is high, the preamplifier turns OFF, thereby blocking the MIC and
line preamplifier outputs. If the voltage is low, the preamplifier turns ON. Even if the preamplifier
is turned OFF (mute ON), signals input to Pin9 are output from Pin18.
MIC/line preamplifier switching
If the input to Pin7 is low and the input to this pin is high, then the line preamplifier turns ON and
the MIC preamplifier turns OFF. If the input to Pin7 is low and the input to this pin is low, then the
line preamplifier turns OFF and the MIC preamplifier turns ON.
REC/PLAY switching
If the input to this pin is high, the recording amplifier turns OFF, and the play equalizer amplifier
turns ON. If low, the recording amplifier turns ON, and the play equalizer amplifier turns OFF.
VOX output
The VOX detection signal is output from this pin. This pin should be connected through a resistor
(100-200kΩ) to the power supply.
VOX detection control
This pin should be connected through a resistor (10 to 470kΩ) and a capacitor in parallel to the
ground. The resistance determines the sensitivity of VOX detection.
Internal reference supply voltage output
This pin should be grounded through a 100µF capacitor.
Equalizer amplifier output
Amplified play signals from the head are output from this pin. A resistor and capacitors connected
between this pin and Pin14 determine the equalizer characteristics.
Equalizer amplifier inverse input
This pin connects through a resistor to Pin13 to determine the equalizer characteristics. The expected input impedance is typically 10kΩ.
To the REC/PLAY head
A REC/PLAY head must be connected between this pin and the ground. Switching of REC and
PLAY modes is done by Pin9. A load resistor should be connected between this pin and the ground
because the input impedance becomes high (several hundred kilohms) in the PLAY mode.
REC gain control
A resistance connected between this pin and the ground determines the head bias current in the REC
mode. The lower the resistance, the higher the current. A serial combination of a resistance and a
capacitance, connected in parallel with the resistance, determines the REC gain.
VOX amplifier input
The preamplifier output at Pin18 must be connected through a resistor and a capacitor to this pin.
The impedance between Pin18 and this pin determines the gain, and a resistance betweeen Pin11
and the ground determines the frequency characteristics of the VOX amplifier.
Preamplifier output
Amplified MIC/line preamplifier outputs are output from this pin depending on the the statuses of
Pin7 (preamplifier mute) and Pin8 (MIC/line switching).
Preamplifier inverse input
Resistors and a capacitor connected between this pin and Pin18 and 12 determine the preamplifier
gain. The input impedance at this pin is several hundred kilohms.
ALC detection control
A 240kΩ resistor and a 4.7µF capacitor connected in parallel between this pin and the ground control ALC detection sensitivity.
■ Pin Descriptions (cont.)
Pin No.
Symbol
21
LIN in
22
MIC in
23
PRE VCC
24
PRE GND
Description
Line preamplifier input
Line receiver signals are input through a capacitor and a resistor to this pin, and then amplified to be
output from Pin18. The statuses of Pins7 and 8 enable or disable the signals. The input impedance
with ALC OFF is 10kΩ.
MIC preamplifier input
MIC signals are input through a capacitor and a resistor to this pin, and then amplified to be output
from Pin18. The statuses of Pins7 and 8 enable or disable the signals. The input impedance with
ALC OFF is 10kΩ.
Preamplifier internal regulated supply voltage output
This pin should be grounded through a 220µF capacitor. The output voltage is typically 4.2V. The
output can be used as an ECM bias current source.
Preamplifier ground
This is the ground pin for the preamplifier circuits.
■ Pin Descriptions
Pin No.
Description
Pin No.
Description
1
Loudspeaker amplifier power supply input
13
Equalizer amplifier output
2
Loudspeaker amplifier output
14
Equalizer amplifier inverting input
3
Loudspeaker amplifier ground
15
To the REC/PLAY head
4
Loudspeaker amplifier inverse input
16
REC gain control
5
Loudspeaker amplifier non-inverting input
17
VOX amplifier input
6
Loudspeaker amplifier mute control
18
Preamplifier output
7
Preamplifier mute control
19
Preamplifier inverting input
8
MIC/line preamplifier switching
20
ALC detection control
9
REC/PLAY switching
21
Line preamplifier input
10
VOX output
22
MIC preamplifier input
11
VOX detection control
23
Preamplifier internal regulated supply voltage output
12
Internal reference supply voltage output
24
Preamplifier ground
■ Block Diagram Showing the Logic of Amplifies
19
22
18
16
15
REC
13
EQ
MICREC
Pre
21
LINPRE
5
SP
4
2
6
7
8
1. Loudspeaker amplifier mute
6 SP MUTE
SP POWER
H
ON
L
OFF
2. REC/PLAY switching
9 PLAY/REC
REC
EQ
H
OFF
ON
L
ON
OFF
iMIC/LIN
MIC PRE AMP
LIN PRE AMP
OFF
OFF
3. Preamplifiers switching
9 PRE AMP
H
L
H
OFF
ON
L
L
ON
OFF
9
POWER
VCC=4.5 to 9.0V
+
C1
220
µF +
SP
OUT
C2
220µF
–
R1 51kΩ
3
+
SP
+
4
+
R2
10kΩ
C4
0.1µF
6
C5
0.1µF
SPMUTE
SP
Mute
Pre
19
R13
100kΩ
+
SP IN
VR
10kΩ
C3
0.1µF +
5
ALC
DET
ALC
LIN
20
R16
240
C17 kΩ
4.7µF
21
R17
47kΩ
C15
0.015
µF
7
PRE
MUTE
Pre
Mute
8
C14
0.01
µF
R12
9.1kΩ
LIN
MIC
MIC
LIN
17
C13
0.033
µF
4.7
kΩ
LOGIC
PRE
OUT
18
R15 R14
1kΩ 30kΩ
–
2
ALC
PRE
VCC
MIC
22
23
R18
47kΩ
C18
0.68
µF
C16
2.2
µF
9
10
Com
VOX
OUT
R4
200
kΩ
Vcc
15
VOX
DET
R10
10kΩ
PLAY
REC
PLAY
REC
REC
16
R11
15kΩ
C12
0.47µF
11
14
R5
220
kΩ
R8
200
kΩ
C10
22
µF
12
C7
100
µF
REG
C6 +
0.1
µF
EQ
13
C8
660
pF
REC OUT
Vref
R7
18
R4
kΩ 330
C9 kΩ
0.01
µF
+
1
24
+
C20
100
µF
C19
0.68
µF
LIN
IN
+
MAC
IN
+
+
PRE
VCC
C11
10µF
–
+
R9
1kΩ
PLAY IN
EQ
OUT
■ Application Circuit