PANASONIC AN7354SC

ICs for Cassette, Cassette Deck
AN7354SC
Dolby* B/C-type Noise Reduction
■ Overview
Unit : mm
1
42
21
22
■ Features
• Built-in spectral
0.15
9.5±0.3
11.5±0.3
* Dolby symbols are the trademarks of Dolby Laboratory
2.0±0.2
0.3
0.9
0.1±0.1
1.0
skewing circuit not requiring external
parts
• Line-output muting circuit built-in
• PB input delay circuit built-in
• Built-in level detection circuit for automatic level adjustment and level meter
• ON/OFF of NR, B-/C-type, REC./PB, MPX and muting
function, and Hi/Lo changeover of level detection gain,
directly-controllable by microcomputer
21.25±0.3
0.35±0.1
0.45
The AN7354SC is an IC for 2 ch. Dolby B/C-Type noise
reduction process. It requires fewer external parts and
incorporates the functions of line-output muting and level
detection and the delay circuit.
42-Lead SSOP Package (SSOP042-P-0450)
Licensing Corporation. The use of this products
requires the approval of Dolby Laboratories Licensing
Corporation in advance.
■ Block Diagram
5.6kΩ
PB
IN
1500pF
1µF
+
MPX METER
OFF/ 0dB
ON /20dB
LINE
OUT
0.1µF
+
MPX
1µF
42
REC.
/PB
+
1µF
2.2µF
2.4kΩ
40
39
38
37
36
100kΩ
+
+
41
LEVEL
METER
OUT
1500pF
35
34
33
32
31
30
29
28
REC. OUT
1500pF
27
+
25
26
0.47µF
REC.
IN
0.47µF
VCC
24
+
23
22
Mute
Delay
Rect
SS
HLS
LLS
SS
HLS
LLS
LOGIC
Bias
Rect
Delay
3
4
5
+
1µF
REC.
IN
7
8
9
10
11
13
+
1500pF
5.6kΩ
14
15
16
17
+
MPX
PB
IN
12
2.4kΩ
22kΩ
VEE
6
NR C/B
ON/ -type
OFF
Mute
ON/OFF
0.1µF
+
2.2µF
1µF
100kΩ
LINE
OUT
18
1500pF
LEVEL
METER
OUT
19
+
20
0.47µF
2
+
1µF
0.47µF
1
Mute
21
+
1500pF
REC. OUT
ICs for Cassette, Cassette Deck
AN7354SC
■ Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Rating
VCC
±6.7
ICC (+)
+22
ICC (–)
–22
Supply Voltage
Supply Current (Ta=75˚C)
Unit
V
mA
Power Dissipation (Ta=75˚C)
PD
295
Operating Ambient Temperature
Topr
–20 ~ + 75
˚C
Storage Temperature
Tstg
–55 ~ + 125
˚C
mW
■ Recommended Operating Range (Ta=25˚C)
Parameter
Symbol
Range
Operating Supply Voltage Range
VCC
±4.5V ~ ±6.5V
■ Electrical Characteristics (VCC= ± 6V, Ta=25˚C ± 2˚C)
Symbol
Condition
Total Circuit Current Note 1)
Parameter
ICC
REC. – IN to REC. – OUT
I/O Gain Note 2)
PB – IN to REC. – OUT
I/O Gain Note 3)
Grin
REC., OFF, No input signals
REC., OFF, f = 1kHz
REC. – OUT Level 388mV
PB, OFF, f = 1kHz
REC. – OUT Level 388mV
PB, OFF, f = 1kHz
Gain difference from Gpin
PB, OFF, f = 1kHz
Vin = 0dB
REC., B, f = 10kHz
Vin = – 40dB
REC., B, f = 5kHz
Vin = – 30dB
REC., B, f = 1kHz
Vin = – 25dB
REC., B, f = 10kHz
Vin = 0dB
REC., C, f = 1kHz
Vin = – 60dB
REC., C, f = 5kHz
Vin = – 40dB
REC., C, f = 300Hz
Vin = – 30dB
REC., C, f = 5kHz
Vin = – 25dB
REC., C, f = 15kHz
Vin = 0dB
REC., OFF, f = 1kHz
VCC = ±4.5V THD = 1%
REC., OFF, f = 1kHz
Vin = 0dB
REC., C, f = 1kHz
Vin = 0dB
REC., C, Rg = 5.1kΩ
CCIR/ARM Weighted
REC., OFF, → C switch,
REC. – OUT potential fluctuation
MPX ON/OFF Gain Difference
LINE – OUT Level
Gpin
DGmpx
Vlout
B-type Encode Boost (1)
BR – 1
B-type Encode Boost (2)
BR – 2
B-type Encode Boost (3)
BR – 3
B-type Encode Boost (4)
BR – 4
C-type Encode Boost (1)
CR – 1
C-type Encode Boost (2)
CR – 2
C-type Encode Boost (3)
CR – 3
C-type Encode Boost (4)
CR – 4
C-type Encode Boost (5)
CR – 5
Signal Handling
VOmax.
Total Harmonics Distortion – off
THDO
Total Harmonics Distortion – C
THDC
Signal to Noise Ratio
S/N
Mode Switch Offset
Vofs – R
min.
typ.
max.
Unit
12
16
20
mA
17
19
21
dB
22
24
26
dB
–1
0
1
dB
510
570
640 mVrms
9.4
10.4
11.9
dB
6.7
8.2
9.7
dB
4.2
5.7
7.2
dB
– 1.1
0.4
1.9
dB
18.1
19.6
21.6
dB
11.5
13.5
15.5
dB
8.7
10.7
12.7
dB
3.5
5.5
7.5
dB
– 8.3
– 6.3
– 4.3
dB
12
13
dB
0.02
0.15
%
0.13
0.3
%
60.0
62.5
–70
0
dB
70
mV
Note 1) REC., OFF in the condition description, expresses that MODE is REC. and NR is OFF. The same for the following.
Note 2) Obtain the input voltage of REC. – IN when the output voltage of REC. – OUT becomes 388mVrms. For this input
voltage, the reference level in REC. is assumed 0dB.
Note 3) Obtain the input voltage of PB. – IN when the output voltage of REC. – OUT becomes 388mVrms. For this input voltage,
the reference level in PB is assumed 0dB.
ICs for Cassette, Cassette Deck
AN7354SC
■ Electrical Characteristics (Cont.) (VCC= ± 6V, Ta=25˚C ± 2˚C)
Parameter
Channel Balance
Total Harmonics Distortion Line Out
Line Mute Attenuation
Symbol
CB
THDP
Gmut
Line Mute Offset
Vofs – M
Level Meter Output (1) Note 4)
VDC (1)
Level Meter Output (2)
VDC (2)
Level Meter Output (3)
VDC (3)
Level Meter Output Offset
Vofs – L
Delay Output (1)
VPS (1)
Delay Output (2)
VPS (2)
Delay Output (3)
VPS (3)
Delay Output (4)
VPS (4)
Delay Output (5)
VPS (5)
Delay Output (6)
VPS (6)
Note 4)
Condition
Gain difference between
channels, Grin and Gpin
PB, OFF, f = 1kHz
Vin = 0dB, LINE – OUT
PB, OFF, Mute ON
f = 1kHz, Vin = 0dB
Mute OFF → ON switching,
LINE – OUT potential fluctuation
PB, OFF, LMG Normal
f = 1kHz, Vin = – 3dB
PB, OFF, LMG Normal
f = 1kHz, Vin = +9dB
PB, OFF, LMG High
f = 1kHz, Vin = –18dB
PB, OFF, LMG Normal
No Input
Vin = – 0.2V
S30 → C PB MPX off
Piny and Pin#7 DC Potential
Vin = + 0.2V
S30 → C PB MPX off
Difference from VPS (1)
Vin = – 0.2V
S30 → B PB MPX off
Piny and Pin#7 DC Potential
Vin = + 0.2V
S30 → B PB MPX off
Difference from VPS (3)
Vin = – 0.2V
S30 → A PB MPX off
Piny and Pin#7 DC Potential
Vin = + 0.2V
S30 → A PB MPX off
Difference from VPS (5)
LMG in the condition description is an abbreviation of Level Meter Gain.
min.
–1
typ.
max.
Unit
0
1
dB
0.02
0.15
%
–85
–75
dB
–20
0
20
mV
0.9
1.0
1.1
V
3.6
4.0
4.4
V
0.9
1.0
1.1
V
–15
0
15
mV
2
3
4
V
4
6
8
V
– 0.1
0
0.1
V
– 0.2
0
0.2
V
–4
–3
–2
V
4
6
8
V
ICs for Cassette, Cassette Deck
AN7354SC
■ Electrical Characteristics (Ta=25˚C±2˚C) [Design Reference Values]
The following characteristic values are reference values for design but not guaranteed values.
Parameter
Decreased Voltage Mute (1)
Symbol
Vmut (1)
Crosstalk,
REC.– IN to LINE– OUT
Crosstalk,
PB– IN to REC.– OUT
CT– RP
Crosstalk, Cannel to Cannel
CT– CC
PB/REC. Control Voltage PB
CT– PR
VCPB
PB/REC. Control Voltage REC.
VCREC.
MPX Control Voltage ON
VCMon
MPX Control Voltage OFF
VCMoff
Meter Control Voltage Normal
VCMnor
Meter Control Voltage Hi
VCMhi
NR Control Voltage ON
VCON
NR Control Voltage OFF
VCOFF
B/C Control Voltage C
VCC
B/C Control Voltage B
VCB
Condition
PB, OFF, Mute OFF, f=1kHz,
Vin = 0dB Voltage between
Pins1 and 42 when mute functions
PB, OFF, f = 1kHz
Vin = 0dB (At REC)
PB, OFF, f = 1kHz
Vin = 0dB (At PB)
PB, OFF, f = 1kHz
Vin = 0dB
Pin35 applied DC voltage when
PB, MPX are OFF
Pin35 applied DC voltage when
PB, MPX are ON
Pin34 applied DC voltage when
PB, MPX are ON
Pin34 applied DC voltage when
PB, MPX are OFF
Pin33 applied DC voltage when
Meter becomes Normal
Pin33 applied DC voltage when
Meter becomes Hi
Pin8 applied DC voltage when
NR is ON
Pin8 applied DC voltage when
NR is OFF
Pin9 applied DC voltage for
C-type NR
Pin9 applied DC voltage for
B-type NR
Pin10 applied DC voltage when
Mute is ON
Pin10 applied DC voltage when
Mute is OFF
min.
4.4
typ.
max.
Unit
6.4
8.4
V
–80
–70
dB
–80
–70
dB
–80
–70
dB
+2.5
+6
V
–1.5
+1.5
V
–1.5
+1.5
V
+2.5
+6
V
+2.5
+6
V
–1.5
+1.5
V
+2.5
+6
V
–1.5
+1.5
V
+2.5
+6
V
–1.5
+1.5
V
+2.5
+6
V
–1.5
+1.5
V
Mute Control Voltage ON
VCMUon
Mute Control Voltage OFF
VCMUof
REC.– IN Input Resistance
Rin – RI
56.4
64
75.6
kΩ
PB – IN Input Resistance
Rin – PI
28.05
33
37.95
kΩ
ICs for Cassette, Cassette Deck
AN7354SC
■ Characteristics Curve
Consumption Current
Consumption Current (mA)
30
Consumption Current
C type Vin = 0
OFF 10kHz + 10dB
B type Vin = 0
Encode Mode
Ta= 25˚C
28
26
C type 10kHz + 10dB
24
22
B type 10kHz + 10dB
20
18
16
32
30
Consumption Current (mA)
32
14
Encode boost (dB)
10
8
±4.5
±5.0
±6.0
±5.5
C type 10kHz + 10dB
24
22
B type 10kHz + 10dB
20
18
16
12
±6.5
C type Vin = 0
OFF 10kHz + 10dB
B type Vin = 0
±4.5
±5.0
B – type Encode Characteristics
C – type Encode Characteristics
Ta= –30˚C
Ta= 25˚C
Ta= 80˚C
VCC=12V
–30dB
–20dB
–60dB
20
–40dB
2
16
–50dB
12
–40dB
8
–30dB
4
–20dB
0
–10dB
Ta = –30˚C
Ta = 25˚C
Ta = 80˚C
VCC =12V
100
200
500
–10dB
–4
0
0dB
200
500
1k
2k
5k
10k
20k
NR OFF Total Harmonics Distortion
0.5
0.2
0.1
0.05
0.02
0.01
–30
–20
–10
0
10
2.0
1.0
0.2
0.1
0.05
0.02
–20
–10
26
24
22
Signal Handling (dB)
1.0
0.5
0.2
0.1
100Hz
1kHz
10kHz
0.02
20
18
16
14
12
NR OFF
B type
C type
8
–10
0
20
Encode Mode
f=1kHz
THD=1%
10
Output Level (dB)
10
Signal Handling
C – type Total Harmonics Distortion
Total Harmonics Distortion (%)
0
Output Level (dB)
Encode Mode
2.0 VCC = ± 6V
–20
0dB
10k 20k
0.5
0.01
–30
20
5.0
0.01
–30
5k
Encode Mode
VCC = ± 6V
100Hz
1kHz
10kHz
Output Level (dB)
0.05
2k
B – type Total Harmonics Distortion
5.0
Encode Mode
VCC = ± 6V
100Hz
1kHz
10kHz
Total Harmonics Distortion (%)
Total Harmonics Distortion (%)
1.0
1k
Frequency (Hz)
Frequency (Hz)
2.0
±6.5
Supply Voltage VCC (V)
4
5.0
±6.0
±5.5
Supply Voltage VCC (V)
6
100
26
14
Encode boost (dB)
12
Decode Mode
Ta= 25˚C
28
10
20
6
±4.5
±5.0
±5.5
±6.0
Supply Voltage VCC (V)
±6.5
ICs for Cassette, Cassette Deck
AN7354SC
Crosstalk
Crosstalk
PB Mode to REC. Mode
VCC = ± 6V 30kHz LPF
REC. Mode to PB Mode
VCC = ± 6V 30kHz LPF
–40
–60
–40
–80
–100
–100
–20
200
500
1k
2k
5k
10k
20k
100
500
1k
2k
Frequency (Hz)
Crosstalk
Crosstalk
–20
C type
B type
NR OFF
–40
–60
–100
–100
500
1k
2k
5k
10k
20k
10k
20k
C type
B type
NR OFF
–60
–80
5k
PB Mode ch. to ch.
VCC = ± 6V 30kHz LPF
–40
–80
200
200
Frequency (Hz)
REC. Mode to ch. to ch.
VCC = ± 6V 30kHz LPF
100
C type
B type
NR OFF
–60
–80
100
Crosstalk (dB)
Crosstalk (dB)
–20
C type
B type
NR OFF
Crosstalk (dB)
Crosstalk (dB)
–20
100
200
500
Frequency (Hz)
1k
2k
5k
10k
20k
Frequency (Hz)
Total Gain
S/N
100
PB IN to PB OUT (Mode : PB OFF)
CCIR/ARM Rg= 5.1kΩ
PB IN to REC. OUT (Mode : REC. OFF)
90
30
PB · B
REC. IN to REC. OUT (Mode : REC. OFF)
S/N (dB)
Total Gain (dB)
REC. IN to PB OUT (Mode : REC. OFF)
28
26
24
PB · C
80
REC. · OFF
PB. · OFF
REC. · B
70
22
REC. · C
60
20
18
VCC = ± 6V
16
100
200
500
1k
2k
5k
10k
50
20k
±4.5
±5.0
±6.0
±5.5
±6.5
Frequency (Hz)
Supply Voltage VCC (V)
Level Meter Characteristics
Delay Circuit Characteristics
6
Hi Gain
Normal Gain
0
4
3
2
–20
–30
0
–40
–90
–50
–60 V = 388mVrms (0dB)
in
–70 Mode : PB MPX ON
VCC = ± 6V
1
0
–40
90
–10
–30
–20
–10
Input Level Vin (dB)
0
10
100
200
500
1k
2k
Frequency (Hz)
5k
10k
–180
20k
Phase (Degree)
Output Level (dB)
Output Voltage (V)
5
ICs for Cassette, Cassette Deck
AN7354SC
■ Pin Description
Pin No.
Pin Name
Input Impedance
Pin Voltage
Pin Description
1
VEE
–6V
Supply voltage (–)
42
VCC
6V
Supply voltage (+)
40
GND
0V
Ground
neutral GND
Equivalent Circuit
VCC
33
METER
Nor/Hi
100kΩ
3.1V
Level meter
Normal/Hi
changeover switch pin
500Ω
3kΩ
3kΩ
100kΩ
–VCC
VCC
34
MPX
OFF/ON
100kΩ
3.1V
MPX
OFF/ON
changeover switch pin
500Ω
20kΩ
20kΩ
100kΩ
–VCC
VCC
35
PB/REC.
100kΩ
3.1V
PB –Mode/
REC.–Mode
changeover switch pin
500Ω
3kΩ
3kΩ
100kΩ
–VCC
ICs for Cassette, Cassette Deck
AN7354SC
■ Pin Description (Cont.)
Pin No.
Pin Name
Input Impedance
Pin Voltage
Pin Description
Equivalent Circuit
VCC
100Ω
2
41
REC. IN
66kΩ
neutral GND
Record input pin
66kΩ
33kΩ
GND
–VCC
VCC
3
IREF
7∞
–5V
Internal resistor error
calibration pin
100Ω
400Ω
–VCC
VCC
100Ω
4
39
PB – IN
33kΩ
neutral GND
Playback input pin
33kΩ
–VCC
VCC
100Ω
5
38
Delay
22kΩ
neutral GND
Delay circuit control pin
22kΩ
22kΩ
–VCC
VCC
6
37
MPX OUT
70Ω
–45mV
MPX drive
amp. output pin
70Ω
1kΩ
1kΩ
–VCC
ICs for Cassette, Cassette Deck
AN7354SC
■ Pin Description (Cont.)
Pin No.
Pin Name
Input Impedance
Pin Voltage
Pin Description
Equivalent Circuit
VCC
500Ω
7
36
MPX IN
500Ω
–30mV
MPX gain aux.
amp. input pin
–VCC
VCC
8
NR
ON/OFF
100kΩ3.1V
NR
ON/OFF
changeover switch pin
500Ω
23.6kΩ
23.6kΩ
100kΩ
–VCC
VCC
9
C/B-type
100kΩ3.1V
C/B
type
changeover switch pin
500Ω
23.1kΩ
23.1kΩ
100kΩ
–VCC
VCC
10
Mute
ON/OFF
100kΩ
3.1V
Mute
ON/OFF
changeover switch pin
500Ω
3kΩ
3kΩ
100kΩ
–VCC
VCC
7.35kΩ
43Ω
11
32
LINE OUT
43Ω
neutral GND
Playback output pin
15kΩ
–VCC
ICs for Cassette, Cassette Deck
AN7354SC
■ Pin Description (Cont.)
Pin No.
Pin Name
Input Impedance
Pin Voltage
Pin Description
Equivalent Circuit
VCC
31Ω
12
31
METER IN
20kΩ
neutral GND
Level meter
input pin
500Ω
20kΩ
GND
–VCC
VCC
100Ω
13
30
MUTE – IN
20kΩ
neutral GND
Mute
input pin
500Ω
20kΩ
GND
–VCC
VCC
1kΩ
14
29
LEVEL
1kΩ
neutral GND
Level meter
control pin
500Ω
–VCC
VCC
15
28
LINE
MUTE
OUT
63kΩ
neutral GND
Playback mute
output pin
43Ω
63kΩ
–VCC
VCC
16
27
METER
OUT
1kΩneutral GND
Level meter
output pin
1kΩ
5.5kΩ
4.7kΩ
1kΩ
GND
–VCC
ICs for Cassette, Cassette Deck
AN7354SC
■ Pin Description (Cont.)
Pin No.
Pin Name
Input Impedance
Pin Voltage
Pin Description
Equivalent Circuit
VCC
17
26
VCR H
Neutral GND
HLS
side chain
control resistor pin
30Ω
–VCC
VCC
18
25
RECT H
–5.45V
HLS control signal
smoothing pin
31Ω
–VCC
VCC
19
24
VCR L
Neutral GND
LLS
side chain
control resistor pin
30Ω
–VCC
VCC
20
23
RECT–L
–5.45V
LLS control signal
smoothing pin
30Ω
–VCC
VCC
21
22
REC. OUT
56Ω
neutral GND
56Ω
Record output pin
–VCC
AN7354SC
ICs for Cassette, Cassette Deck
■ Precautions on Product Handling and Mounting
The AN7354SC Package is dry-sealed, because thermal stress at solder mounting may adversely affect the product reliability due
to the moisture absorption in the resin.
Take into consideration the following instructions for its use :
1. After unpacking the dry sealing package, in order to reduce absorption of the resin, store the product under temperature of
30˚C or lower and RH65% or less, and perform its mounting within 5 days following the unpacking, except when only lead
section is heated by such as hand soldering. In addition, after unpacking, put the remainder back into the laminate bag and
seal the bag with tapes or similars. Unless the silica gel in the bag discolors (blue to pink), its quality is guaranteed within 10
days.
2. If the product is stored under the conditions more than the above, pre-bake it (for 6 hours or more under 125˚C, or for 48 hours
more under 70˚C) before mounting.
3. About soldering method
(1) Solder dip method
Solder dip must be performed under as low temperature as possible not exceeding 260˚C and for as short time as
possible not exceeding 5s.
(2) Reflow method
((Remarks)) 1 Peak temperature : 230˚C or lower
(3)
(4)
2 Peak time : 10s or shorter
3 Do not sharply rise the temperature from pre-heat temperature (150˚C or lower) to peak temperature (230˚C).
4 Reflow process must be performed only once.
Hand soldering method
When only leads are simultaneously heated, soldering must be performed under as low temperature as possible not
exceeding 300˚C and for as short time as possible not exceeding 20s.
For any soldering method, do not use the chlorine flux. If the chlorine flux is used, residual chlorine may adversely affect
the product reliability.
Thoroughly clean the IC after mounting. Any flux remaining after mounting results in lead corrosion, degrading the
product reliability. In addition, if supersonic waves are used for cleaning, particular care must be taken, because
resonance may occur depending on the size of IC and printed board.