Panasonic AN7367K Dbx ii noise reduction ic for cassette deck Datasheet

ICs for Cassette, Cassette Deck
AN7367K
dbx II Noise Reduction IC for Cassette Deck
■ Overview
1.05±0.25
3.05±0.25
8.4±0.3
4.8±0.25
3 ~ 15˚
10.16±0.25
0.3
+ 0.1
5
– 0.0
28-Lead SDIP Package (SDIP028-P-0400A)
■ Block Diagram
+VCC
28
27
26
25
24
23
22
21
20
19
18
17
–D+
16
15
E O D
+C–
+E–
–
E OD
F+
E ODEOD
+A–
–
B+
B D E
1
GND
L.S
2
3
4
5
6
7
8
9
10
11
0.9±0.25
28
27
26
25
24
23
22
21
20
19
18
17
16
15
1.778
26.7±0.3
■ Features
• Dynamic range : 110dB
• 2-channel
• Reference input-output signal level : 90mV
• 2 power supply type (+, –)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
0.5±0.1
Unit : mm
The AN7367K is an integrated circuit available for
stereo operation on a single chip developed for dbx II
type noise reduction, which can also use for U.S. sound
multiplex TV. And it is designed for easy use of reference
signal level, supply voltage and logic input level.
12
13
14
–VCC
ICs for Cassette, Cassette Deck
AN7367K
■ Absolute Maximum Ratings (Ta=25˚C)
Symbol
Rating
Supply Voltage
Parameter
VCC
±7.2
Unit
Supply Current
ICC
30
mA
Power Dissipation (Ta=75˚C)
PD
450
mW
Operating Ambient Temperature
Topr
–20 ~ + 75
˚C
Storage Temperature
Tstg
–55 ~ + 150
˚C
V
■ Recommended Operating Range (Ta=25˚C)
Parameter
Symbol
Range
Operating Supply Voltage Range
VCC
± 5V ~ ±7V
■ Electrical Characteristics (VCC= ± 6V, Ta=25˚C )
Parameter
AN7367K
Symbol
H4Condition
Encode Output Voltage
Encode Linearity –1 *1
VOE
Vin = 1kHz, 90mV (Reference Level)
LE – 1
Encode Linearity –2 *1
Decode Output Voltage
Decode Linearity –1 *2
Decode Linearity –2 *2
Encode Max. Output Voltage
min.
typ.
max.
Unit
67.5
85
107
mV
Vin = 1kHz, 900mV (Encode)
8
10
12
dB
LE – 2
Vin = 1kHz, 0.9mV (Encode)
– 22
– 20
– 18
dB
VOD
Vin = 1kHz, 90mV (Reference Level)
67.5
85
107
mV
LD – 1
Vin = 1kHz, 285mV (Decode)
17
20
23
dB
LD – 2
Vin = 1kHz, 9mV (Decode)
– 43
– 40
– 37
VOME
THD = 3%, f = 1kHz
300
1100
Decode Max. Output Voltage
VOMD
THD = 3%, f = 1kHz
Encode Total Harmonic Distortion
THDE
At Encode, 400Hz ~ 30kHz, f = 1kHz, 90mV
Decode Total Harmonic Distortion
THDD
At Decode, 400Hz ~ 30kHz, f = 1kHz, 90mV
Encode Noise Output Voltage
VNOE
Input short, DIN/AUDIO
Decode Noise Output Voltage
VNOD
Input short, DIN/AUDIO
Encode Output Defference between Channels
CDE
Vin = 1kHz, 90mV
Decode Output Difference between Channels
CDD
dB
mV
mV
0.35
0.45
%
0.1
0.3
%
– 62
– 58
dBV
– 96
– 92
dBV
– 1.3
0
1.3
dB
–2
0
2
dB
– 52
– 45
dBV
– 91
– 85
dBV
mV
Encode Crosstalk between Channels
CTE
Vin = 1kHz, 90mV
At Encode *3, Vin = 1kHz, 900mV
Decode Crosstalk between Channels
CTD
At Decode, Vin = 1kHz, 90mV
Monitor Output Voltage
VOM
At Encode, Vin = 1kHz, 90mV
75
90
107
Monitor Output Voltage Output Difference Between Channels
CDM
At Encode, Vin = 1kHz, 90mV
– 1.5
0
1.5
dB
Monitor Output Noise Output Voltage
VNOM
Encode input, Short DIN/AUDIO
– 110
– 106
dBV
Monitor Output Total Harmonic Distortion
THDM
At Encode, Vin = 1kHz, 90mV
0.01
0.1
%
dbx OFF Line Output Voltage
VLOFF
Vin = 1kHz, 180mV
151
180
214
mV
dbx OFF Rec. Output Voltage
VROFF
Vin = 1kHz, 180mV
151
180
214
mV
dbx OFF line Output Total Harmonic Distortion
THDLOFF
Vin = 1kHz, 180mV
0.01
0.1
%
dbx OFF Rec Output Total Harmonic Distortion
THDROFF
Vin = 1kHz, 180mV
0.01
0.1
%
dbx OFF Line Output Noise Output Voltage
VNLOFF
Input Short, DIN/AUDIO
– 110
– 104
dBV
dbx OFF Rec. Output Noise Output Voltage
VNROFF
Input Short, DIN/AUDIO
– 110
104
dBV
dbx OFF Line Output Output Difference between Channels
CDLOFF
Vin = 1kHz, 180mV
– 1.5
0
1.5
dB
dbx OFF Rec. Output Output Difference between Channels
CDROFF
Vin = 1kHz, 180mV
– 1.5
0
1.5
Input Impedance
ZIN
Vin = 1kHz, 90mV
500
Total Circuit Current
Itot
Input Short at Encode
*1 Level Ratio to VOE
*2 Level Ratio to VOD
*3 Measure output leak by short of measuring channel input and input to reverse channel.
dB
kΩ
12
16
mA
ICs for Cassette, Cassette Deck
AN7367K
■ Electrical Characteristics (Cont.) (VCC= ± 6V, Ta=25˚C)
Parameter
Symbol
dbx ON/OFF Control dbx ON
V15ON
dbx ON/OFF Control dbxOFF
V15OFF
Encode/Decode Control Encode
V16EN
Encode/Decode Control Decode
V16DE
Condition
min.
typ.
max.
Satisfy specifications of the preceding page VOE ~ VNLOFF
3.2
–VEE
Satisfy specifications of the preceding page
+ 0.4V
VOE ~ VNLOFF
dbx ON/OFF Control “L” Overflow Current
I15L
3.2
Satisfy specifications of the preceding page VOE ~ VNLOFF
–VEE
Satisfy specifications of the preceding page
+ 0.4V
VOE ~ VNLOFF
V15=1.8V
–2.1
Encode/Decode Control “L” Overflow Current
I16L
V16=1.8V
Pulse Noise at Encode
VNPE
Input Short, Time : a second, number : one
–2.1
V
1.8
V
6
V
1.8
V
– 0.2
µA
– 0.2
µA
13 mVP – P
■ Characteristics Curve
Vout (dBV)
–30
f = 10kHz
–20
f=1kHz
1.6
f=10kHz
1.2
Vout
–40
f=10kHz
0.8
–50
–60
– 60
– 60
2
–80
f=1kHz
– 80
f = 1kHz
0.4
THD
–100
Vout
– 40
– 40
– 20
0
1
f = 1kHz
0
THD (%)
VCC = ± 6V
LPF = 30kHz
HPF = 400Hz
Din Audio – 62dBV
Vout (dBV)
–20
VCC = ± 6V
LPF = 30kHz
HPF = 400Hz
0 Din Audio – 98dBV
THD (%)
–10
Input/Output Characteristics
(Playback Mode)
20
Input/Output Characteristics
(Rec. Mode)
THD
Vin (dBV)
–100
0
– 60
– 40
–20
0
Vin (dBV)
Output Frequency Characteristics
(Rec. Mode)
Output Frequency Characteristics
(Playback Mode)
8
Vout = 87.6mV = 0dB
f = 1kHz
4 Vin = 90mV
6
4
Vout (dB)
Vout (dB)
0
2
0
Vout = 85.6mV = 0dB
f = 1kHz
– 2 Vin = 90mV
f ≥1kHz ··· LPF (30kHz)
HPF (400Hz)
–4
f <1kHz ··· HPF (400Hz)
10
100
–4
–8
– 12
1k
10k
100k
10
Frequency f (Hz)
100
1k
10k
100k
Frequency f (Hz)
■ Pin Description
Pin No.
Pin Name
2
·
27
Recording Signal
Input
Typ. Waveform
Description
Equivalent Circuit
2
0V
Pin for inputting signal
Unit
6
27
+
–
ICs for Cassette, Cassette Deck
AN7367K
■ Pin Description (Cont.)
Pin No.
3
·
26
Pin Name
Typ. Waveform
Description
Equivalent Circuit
Emphasis
+
–
3
Emphasis amp. – side input pin
26
+
–
4
·
25
Line Amp. Output
5
·
24
Emphasis
Amp. Output
4
25
0V
Line amp. output pin
+
–
+
–
0V
+
–
Emphasis amp. output pin
5
24
6
·
23
Buffer Output
0V
Buffer output pin
7
·
22
CCA Input
0V
CCA input pin
8
·
21
CCA Output
0V
CCA output pin
9
·
20
+
–
6
23
7
22
8
21
+
–
CCA Amp. Input
CCA amp. input pin
0V
9
20
10
·
19
Rec. Out Output
0V
Rec. out output pin
+
–
10
19
ICs for Cassette, Cassette Deck
AN7367K
■ Pin Description (Cont.)
Pin No.
Pin Name
Typ. Waveform
11
·
18
Level Sensor Input
–5.2V
Description
Equivalent Circuit
Level sensor input pin
11
18
12
·
Timing Capacitor
–5.3V
Level sensor smoothing pin
12
17
13
17
Timing Current
Adjusting Pin
Adjust the timing current by
external variable resistance.
1kΩ
13
103µA
15
dbx ON/OFF
Switching
High– dbx ON
Low– dbx OFF
15
3.7kΩ
103µA
16
16
Encode/
Decode Switching
1
GND
14
(–) Power Supply
28
(+) Power Supply
High – Encode
Low– Decode
3.7kΩ
ICs for Cassette, Cassette Deck
AN7367K
■ Precautions on Use
1) For the emphasis, RMS filter, and waiting C, R, use those
resistors and capacitors which satisfy the following error
ranges. (R ; ±2%, C ; ±5%)
2) For the timing capacitor, use a suitable one whose error is
within ±5% and whose tan δ is small enough. The
selected timing capacitor must also has excellent
temperature characteristics.
3) Adjust the timing adjustment pin so that the level on both
1kΩ ends becomes 18.4mV.
4) If shortening of the power ON rise time is necessary,
connect the timing capacitor as shown in the sketch
below.
6V
12/17
+
+
12/17
–6V
Note)
– 6V
Remember to make the power impedance low enough.
5)
Encode THD
The product specification is based on the data confirmed
by use of a band-pass filter (400Hz ~ 30kHz).
The distortion rate in the secondary to quintic higher
harmonics measured by a spectrum analyzer is about
0.16%.
6) When users use the AN7367K, contract should be made
between the dbx Technology Licensing. dbx license and
trademark should be contacted with the following.
the U.S.A. : dbx Technology Licensing
433 California Street. Third Floor
San Francisco, California 94104
Tel : 415-765-2801
Fax : 415-765-2141
Japan Office : dbx Technology Licensing
Tel : 03-3378-0915
Fax : 03-3374-5191
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