LA72680M [SANYO]
JAPAN TV Sound Multiplex Demodulation HiFi Sound Signal Processor; 日本电视伴音解调高保真音响信号处理器
| 型号： | LA72680M |
| 厂家： | 
SANYO SEMICON DEVICE |
| 描述： | JAPAN TV Sound Multiplex Demodulation HiFi Sound Signal Processor |
| 文件： | 总21页 (文件大小：324K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Ordering number : EN7955A
Monolithic Linear IC
JAPAN TV Sound Multiplex Demodulation
LA72680M
HiFi Sound Signal Processor
Overview
The LA72670BM is a HiFi sound signal processor with a built-in SIF demodulation and JAPAN TV sound multiplex
demodulation on a single chip.
Full adjustment free operation is realized by the IC’s internal automatic adjustment and trimming function, etc.
Functions
• HiFi sound signal processor
• HiFi head amp
• SIF modulation
• JAPAN multiplex modulation
Specifications
Maximum Ratings at Ta = 25°C
Parameter
Maximum power supply voltage 1
Symbol
H max
Conditions
Ratings
Unit
V
V
9.6
CC
Maximum power supply voltage 2
Always power supply voltage
Allowable power dissipation
Operating ambient temperature
Storage ambient temperature
V
L max
A max
6
6
V
V
CC
V
CC
Pd max
Topr
Ta=70°C *
1300
mW
°C
°C
-10 to +70
-55 to +150
Tstg
* On board: 114.3mm×76.1mm×1.6mm, glass epoxy board.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
equipment.
's products or
41807 MS PC B8-6946,B8-6871 No.7955-1/21
LA72680M
Operating Conditions at Ta = 25°C
Parameter
Symbol
Conditions
Ratings
Unit
V
Recommended operating
voltage 1
Recommended operating
voltage 2
V
H
9
5
CC
V
L
V
CC
Recommended always voltage
V
A
5
8.5 to 9.5
4.8 to 5.3
4.5 to 5.5
V
V
V
V
CC
Allowable operating voltage 1
Allowable operating voltage 2
V
H op1
CC
V
L op2
CC
CC
Allowable operating always
voltage
V
A op3
Electrical Characteristics at Ta = 25°C, V H=9V, V L=5V, V A=5V
CC
CC
CC
Ratings
typ
Parameter
Symbol
Conditions
Unit
mA
min
max
58
Current dissipation
REC&EE 9V
I
R1
No signal, Inflow current at Pin 3/54
G1D8D7:00
42
50
CC
Current dissipation EE 5V
I
E1
R2
No signal, Inflow current at Pin 15/32/36/46
63
89
75
87
mA
mA
CC
G1D8D7:00
Current dissipation REC
5V
I
No signal, Inflow current at Pin 15/32/36/46
G1D8D7:00, G1D4:1
105
121
CC
Current dissipation PB 9V
I
I
I
P1
P2
AL
No signal, Inflow current at Pin 3/54
G1D8D7:01
No signal, Inflow current at Pin 15/32/36/46
G1D8D7:01
No signal, Inflow current at Pin 5,
Mute H at Pin 49
9
76
11
90
13
104
1.2
mA
mA
mA
CC
CC
CC
Current dissipation PB 5V
Current dissipation
always power supply
0.8
1.0
EE through (LINE IN to LINE OUT), EE mode, f=1kHz, L/R-ch
Output level 1
V
V
1
2
V
V
V
V
=-28.2dBV, Gain=1 (G3 D4:0)
=-28.2dBV, Gain=2 (G3 D4:1)
=-28.2dBV, Gain1, 2
-10.5
-9.5
-9
-8
-7.5
-6.5
0.15
1
dBV
dBV
%
O
IN
IN
IN
IN
Output level 2
O
Output distortion
THD
0.05
0
Channel gain difference
Maximum output level
Output noise level
Mute attenuation value
Input switch cross-talk
∆V
=-28.2dBV, Gain1, 2
-1
7
dB
O
M
V
THD=1%, Gain1, 2
8.5
-89
-91
-75
dBV
dBV
dB
O
VNO
MU
CT
Rg=1kΩ, JIS-A filter, Gain1
-85
-80
-68
V
V
=-18.2dBV
=-18.2dBV
IN
dB
IN
Normal output (LINE IN to NORMAL OUT), EE mode, f=1kHz
Output level for Normal
V
NOR
V
=-28.2dBV
-22.5
-11.0
-7.0
-21.5
-20.5
dBV
O
IN
RFC output (NORMAL IN to RFC OUT), f=1kHz
Output level
V
R
V
V
=-21.2dBV, G2D4D3:10
=-21.2dBV, G2D4D3:10
-9.5
0.05
-5.5
0.3
-8.0
0.2
-4.0
0.5
0
dBV
%
O
IN
Output distortion
ALC level (1)
THDR
IN
V
AR1
VIN=-11.2dBV, G2D4D3:10
dBv
%
O
ALC distortion (1)
ALC level (2)
THDAR1
V
V
V
=-11.2dBV, G2D4D3:10
IN
IN
IN
V
AR2
= -11.2dBV, G2D4D3:10, G4D2:1
= -11.2dBV, G2D4D3:10, G4D2:1
-3.0
-1.5
0.1
dBv
%
O
ALC distortion (2)
THDAR2
0.3
LINE AMP (NORMAL IN to LINE OUT), EE mode, f=1kHz, Left channel and Right channel
Line amp gain GVL =-21dBV, Gain=1 mode (G2D4:0)
V
11
12
13
dB
IN
REC system (LINE IN to VCO OUT), f=1kHz
Free-running frequency L
Free-running frequency R
f
L
Input no signal
Input no signal
1.294
1.694
±46
1.300
1.700
±50
1.306
1.706
±54
MHz
MHz
kHz
O
f
R
O
Standard frequency deviation
L&R
DEV
V
=-28.2dBV
IN
Carrier output level Lch
VfoL
MIX1
MIX2
MIX3
MIX4
Non modulation
380
7.1
440
7.6
500
8.1
mVp-p
dB
FM R/Lch MIX ratio 1
FM R/Lch MIX ratio 2
FM R/Lch MIX ratio 3
FM R/Lch MIX ratio 4
Non modulation, VfoR/VfoL, G3D7D6;01
Non modulation, VfoR/VfoL, G3D7D6;00
Non modulation, VfoR/VfoL, G3D7D6;10
Non modulation, VfoR/VfoL, G3D7D6;11
8.1
8.6
9.1
dB
9.1
9.6
10.1
11.1
dB
10.1
10.6
dB
Continued on next page.
No.7955-2/21
LA72680M
Continued from preceding page.
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
FM modulation system (PB FM IN to LINE OUT), PB mode, FM standard input=300mVp-p(R/Lch ratio=1:1)
Output level Lch
V
PL
fc=1.3±50kHz, fm=1kHz, Gain=1 (G3D4:0)
-11
-11
-9
-7
-7
dBV
dBV
dB
O
Output level Rch
V
PR
fc=1.7MHz±50kHz, fm=1kHz, Gain=1 (G3D4:0)
-9
0
O
Output level difference
VDEM
fc=1.3MHz±50kHz, fm=1kHz
fc=1.7MHz±50kHz, fm=1kHz
Lch-Rch, Gain=1 (G3D4:0)
fc=1.3MHz±50kHz, fm=1kHz,DIN
-1.5
1.5
Output distortion Lch
Output distortion Rch
THDPL
THDPR
0.3
0.3
0.5
0.5
%
%
fc=1.7MHz±50kHz, fm=1kHz, DIN
DO detector / HiFi detector PB mode(DO DET : fc=1.3MHz / HiFi DET : fc=1.3MHz & 1.7MHz),
DO detection level
DOC
The ratio with Standard input
pin 31=300mVp-p
-26
-23
dB
DO detection hysteresis
HiFi recovery delay time
DOCH
HIDEL
0.5
3
5
dB
ms
The delay time that is changed from NORMAL
to HiFi.
110
125
140
HiFi detection DC output 1
HiFi detection DC output 2
HiFi detection DC output 3
VTRS1
VTRS2
VTRS3
NORDC
Pin 34 input level=100mVp-p
2.1
3.3
4.3
2.6
3.8
4.8
3.1
4.3
5.3
0.4
V
V
V
V
Pin 34 input level=300mVp-p
Pin 34 input level=1Vp-p
Pin 34 input level=0mVp-p
NORMAL detection
DC output
Hold pulse occurrence PB mode
Hold pulse delay time
Hold pulse width
HPD
AUDIO HEAD PULSE IN
AUDIO HEAD PULSE IN
0.8
7.2
1.0
9.0
1.2
µs
µs
HPW
10.8
Band pass filter PB mode, PB IN = 150mVp-p(R/L MIX ratio 1:1)
1.3MHz BPF monitor level
1.7MHz BPF monitor level
V13
V17
34pin input level =60mVp-p,G2D2D1:01
34pin input level =60mVp-p,G2D2D1:01
80
60
100
80
-5
120
100
mVp-p
mVp-p
dB
1.3MHz BPF
frequency characteristics 1
1.3MHz BPF
frequency characteristics 2
1.3MHz BPF
frequency characteristics 3
1.7MHz BPF
frequency characteristics 1
1.7MHz BPF
frequency characteristics 2
1.7MHz BPF
L115N
Level difference between 1.15M/1.3MHz
G2D2D1;01
Level difference between 1.45M/1.3MHz
G2D2D1;01
Level difference between 1.55M/1.3MHz
G2D2D1;01
Level difference between 1.45M/1.7MHz
G2D2D1;10
Level difference between 1.55M/1.7MHz
G2D2D1;10
Level difference between 1.85M/1.7MHz
G2D2D1;10
-13
L145N
L155N
R145N
R155N
R185N
-13
-5
-20
-15
-3
dB
dB
dB
dB
dB
-10
-5
-9
-9
-3
frequency characteristics 3
Playback head amp system (PB HEAD AMP IN to OUT), PB mode
Voltage gain
GVP
V
=100µVp-p, f=1.5MHz, CH1&2
66
-2
69
0
72
2
dB
dB
IN
Voltage gain difference
CH1/CH2
∆GVP
EP gain boost value
∆GEP
∆fP
V
V
=100µVp-p, f=1.5MHz
1
2
-1
3.2
1
dB
dB
IN
Frequency characteristics
=100µVp-p, f=1.8M/1.0MHz, CH1&2
-3
IN
Input conversion noise voltage
VNINP
The value(1 / GVP) of 1.1MHz LPF output
1.7
2
µVr m s
level
Output DC offset
∆V DC
CH1/CH2
-30
34
0
30
mV
O
REC AMP system REC mode, The external resistor at pin 28 = 2.7kΩ
REC current
I
R
Inflow current at pin 26
37
40
mA
dB
O
Cross modulation distortion
CMDO4
Rch carrier level standard
-48
-40
0.4MHz component
Cross modulation distortion
0.9MHz component
CMDO9
Rch carrier level standard
-55
-40
dB
current ratio +2dB
I
R+2dB
P23:0V,G4D6D5:01
1.6
2.0
2.4
-1.6
-40
dB
dB
dB
O
current ratio -2dB
I
R-2dB
P23:0V,G4D6D5:10
-2.4
-2.0
O
Mute attenuation value
I
RMU
REC MUTE ON(pin 17:5V)
O
Continued on next page.
No.7955-3/21
LA72680M
Continued from preceding page.
Ratings
typ
Parameter
Symbol
Conditions
Unit
min
max
SIF system (SIF IN to SIF OUT), EE/REC mode
Input level V LIM
fc=4.5MHz
80
-7
90
100
dBµV
I
TV multiplex demodulation system EE/REC mode, L/Rch, LINE AMP GAIN(1)
Deviation of SIF input MONO: 100%→±25kHz (fm=400Hz) Pre-Emphasis ON
MONO output level
Output L/R level difference
MONO distortion
V
MN
fm=1kHz,100% modulation,
Pre-emphasis OFF
fm=1kHz,100% modulation,
Pre-emphasis OFF
fm=1kHz,100% modulation,
Pre-emphasis OFF
fm=10kHz,100% modulation,
Pre-emphasis OFF
-5.5
0
-4
1.5
0.5
-11
dBV
dB
%
O
∆V MN
-1.5
O
THDM
FCM1
SNM
0.2
-14
MONO frequency
-17
dB
characteristics 1
MONO S/N
Non modulation,15kHz LPF
50
dB
dBV
%
TEREO output level
STEREO distortion
STEREO S/N
V
ST
fm=1kHz, 100% modulation, 15kHz LPF
fm=1kHz, 100% modulation, 15kHz LPF
-7.5
-5.5
0.3
-3.5
1.0
O
THDS
SNS
Sub carrier (Non modulation)
+ Cue(Stereo) ,15kHz LPF
fm=1kHz, 100% modulation, Cue(Bilingual),
15kHz LPF
fm=1kHz, 100% modulation, Cue(Bilingual),
15kHz LPF
Sub Carrier(Non modulation) + Cue(Bilingual),
15kHz LPF
fm=1kHz, 100% modulation, Cue(Bilingual),
15kHz LPF
Sub carrier (Non modulation) +
Cue(Bilingual) ,15kHz LPF
fm=10kHz, 60% modulation, Cue(Bilingual),
15kHz LPF
fm=1kHz, 100% modulation, Cue(Bilingual),
15kHz LPF
L:fm=1kHz, 60%modulation, Cue(Stereo),
15kHz-LPF
R:fm=1kHz, 60%modulation, Cue(Stereo),
15kHz-LPF
45
-7
dB
MAIN output level
MAIN distortion
VOMA
THDMA
SNMA
-5.5
0.2
-4
dB
%
0.5
MAIN S/N
50
-7.5
45
dB
dBV
dB
dB
%
SUB output level
V
SU
-5.5
-3.5
O
SUB S/N
SNSU
FCSU2
THDSU
SEPR
SUB frequency characteristics
SUB distortion
-20
-16
0.5
30
30
50
55
-12
2.0
STEREO separation L→R
STEREO separation R→L
Cross-talk MAIN→SUB
Cross-talk SUB→MAIN
25
25
35
45
dB
dB
dB
dB
SEPL
CTSUB
CTMA
Main:fm=1kHz, 100%modulation,
Cue(Bilingual), 15kHz LPF
Sub:fm=1kHz, 100%modulation,
Cue(Bilingual), 15kHz LPF
Main=0%, Sub:0%(Carrier), Cue(Bilingual)
Stay behind carrier level (S)
Stay behind carrier level (M)
Mode detection volt(mono)
Mode detection volt(st)
CLSU
CLMA
VLEDM
VLEDM
VLEDM
VJCH
-55
-55
1.0
2.0
3.0
-45
-45
1.3
2.3
3.3
dBV
dBV
V
Main=0%, Sub:0%(Carrier), Cue( Bilingual)
Input=Monaural signal
0.7
1.7
2.7
4.0
Input=Stereo signal
V
Mode detection volt(bil)
Input=Bilingual signal
V
Just clock output High volt
Just clock output Low volt
f=400Hz(mono),40%Mod.
f=400Hz(mono),10%Mod.
V
VJCL
1.0
V
No.7955-4/21
LA72680M
Package Dimensions
unit : mm (typ)
3255
17.2
14.0
60
41
61
40
21
80
20
1
0.25
0.15
0.65
(0.83)
SANYO : QFP80(14X14)
No.7955-5/21
LA72680M
Block Diagram
0.47µF
No.7955-6/21
LA72680M
Pin Description
DC voltage
AC level
Pin
Pin Function Name
No.
Function
Equivalent circuit
1
Line Mute terminal(L)
When the power supply V
switch of Pin 77 and Pin 1 is turned to ON to
is on, the
CC
Pin77
Pin1
77
Line Mute terminal(R)
reduce the line out noise.
In this case, it is necessary to apply 5 fixed
DC to Pin 5.
10Ω
2
Output terminal
for RF modulator
DC; 4.2V
Output terminal for RF modulator.
ALC level can be settled to -1dBV and OFF
by serial control.
MUTE
10kΩ
300kΩ
3
5
V
9V
Power supply of Line Out.
CC
ALWAYS VCC
Power supply for the noise elimination mute
control when power is on.
15
32
36
46
54
V
V
5V(Lch)
5V
5V power supply of Lch.
CC
5V power supply of HEAD AMP.
Power supply for Logic.
CC
Power supply for Logic
5V(Rch)
V
5V power supply of Rch.
9V power supply of MTS.
CC
9V power supply for
MTS
4
NORMAL input
terminal
DC; 2.5V
NORMAL IC output signal is entered and
output to Line Out through output changeover.
G4D7/0:0dB
1:3dB
500Ω
AC; -28.2dBV
Vref
6
NORMAL output
terminal
DC; 2.5V
This is connected to input of NORMAL
AUDIO IC.
200Ω
AC; -21.2dBv
DC ; 0V
Audio input terminal
EXT1_IN(L)
Audio input terminal.
7
9
EXT2_IN(L)
11
69
71
73
EXT3_IN(L)
EXT1_IN(R)
EXT2_IN(R)
EXT3_IN(R)
AC; -28.2dBV
500Ω
Continued on next page.
No.7955-7/21
LA72680M
Continued from preceding page.
DC voltage
AC level
Pin
Pin Function Name
No.
Function
Equivalent circuit
8
ALC detection terminal
for RF converter
DC;
This is ALC detector terminal for RF
converter and always ready for operation.
2kΩ
10
25
35
50
70
79
12
L-GND
HEADAMP-GND
LOGIC-GND
R-GND
MTS-GND
AUDIO-GND
Monitor input
terminal(L)
DC ; 2.5V
Monitor input terminal
74
Monitor input
terminal(R)
200Ω
Vref
13
48
Input changeover
switch output(L)
DC ; 2.2V
AC; -21.2dBv
DC; 2.5V
PB/REC switch output to transform REC and
PB signals into DC through a coupling
capacitor.
Input changeover
switch output(L)
400Ω
REC:ON
PB:ON
14
47
ALC input terminal(L)
ALC input terminal(R)
ALC input terminal after passing through a
coupling capacitor.
PB:ON
400Ω
AC; -21dBv
DC; 2.5V
Vref
REC:ON
16
1/2 V
terminal
1/2 V terminal.
CC
CC
500Ω
500Ω
Continued on next page.
No.7955-8/21
LA72680M
Continued from preceding page.
DC voltage
AC level
Pin
Pin Function Name
No.
Function
Equivalent circuit
17
REC mute terminal
DC; Unsettled
Two levels control terminal.
Hi ; 3.0V to Vcc
Low ; 0V to 1.5V
1kΩ
18
45
NR waiting DET
terminal(L)
Terminal for waiting detector.
The recommended external capacity is 10µF.
NR waiting DET
terminal(R)
500Ω 500Ω
19
44
20
43
21
22
42
41
NR waiting filter
terminal1(L)
DC; 2.5V
(Pin 19,Pin 44)between GND;4.7µF
(Pin 20,Pin 43)between GND;0.01µF
NR waiting filter
terminal1(R)
22kΩ
Pin19,44
Pin20,43
NR waiting filter
terminal2(L)
2.4kΩ
AC;
NR waiting filter
terminal2(R)
CCA reference
terminal(L)
DC; 2.5V
By connecting 22µF between Pin 21, Pin 41
and GND, 4700pF between Pin 22, Pin 42
and GND, form the NR emphasis.
NR emphasis
terminal(L)
30kΩ10kΩ
10kΩ
12kΩ
Pin22,42
Pin21,41
NR emphasis
terminal(R)
CCA reference
terminal(R)
23
HiFi/Nor selecting
In PB mode, Pin 23 becomes
terminal
(PB)
“TRACKING_DC” when inputting HiFi audio
signal and becomes “L” when inputting
Normal signal.
In EE mode, this is used as the terminal for
monitor control of Pin 34.
(2)Monitor control
terminal at Pin 34
(EE)
5E
500Ω
5kΩ
Low(0 to 0.8V) ; VCO MIX
Middle(1.4V to 3.6V) ; Lch VCO
High(4.2V to V ) ; Rch VCO
CC
Continued on next page.
No.7955-9/21
LA72680M
Continued from preceding page.
DC voltage
AC level
Pin
Pin Function Name
No.
Function
Equivalent circuit
24
HEAD AMP input
terminal (Hch)
DC
PB; 2.0V
HEAD AMP inputs (CH1 and CH2) is PB
mode.
REC-
ON
27
HEAD AMP input
terminal (Lch)
REC; 4.1V
PB-ON
26
REC CURRENT AMP
output terminal
CURRENT AMP output in REC mode.
Common input terminal in PB mode.
V
5V
CC
REC-ON
PB-ON
28
CURRENT AMP
ADJUST terminal
DC; 2.4V
Terminal for adjusting the recording current.
Pin28
400Ω
29
ALC detection terminal
This is ALC detector terminal.
ALC becomes through switch when Pin29
pull up V
.
CC
2kΩ
1kΩ
30
HiFi/NORMAL
detection terminal
This terminal is for detecting
demodulation noise and output which has
passed through the primary
HPF(fc=140kHz).
Pin30
200Ω
Continued on next page.
No.7955-10/21
LA72680M
Continued from preceding page.
DC voltage
AC level
Pin
Pin Function Name
No.
Function
Equivalent circuit
31
Monitor terminal
DC ; 2.5V
FM MIX output(Low), Lch VCO(middle), Rch
VCO(High) can be monitored by controlling
Pin 23 in REC mode.
HOLD and DO pulses can be monitored by
Pin 17 in PB mode. BPF of Lch and Rch can
be monitored by serial control
500Ω
in PB mode.
30kΩ500Ω
REC-ON
33
PB AMP output
DC; 2.5V
Output of HEAD AMP in PB mode.
100Ω
34
PB FM input terminal
DC; Unsettled
Input pin of FM in PB mode.
Vref
AC; 350mVp-p
(L/R MIX)
30pF
30pF
2.5V Vref
37
Serial data input
terminal
Hi ; 3.5V to 5V
Low ; 0V to 1.5V
5V
0V
500Ω
ON
at ACK
38
CLK input terminal
Hi ; 3.5V to 5V
Low ; 0V to 1.5V
5V
0V
500Ω
Continued on next page.
No.7955-11/21
LA72680M
Continued from preceding page.
DC voltage
AC level
Pin
Pin Function Name
No.
Function
Equivalent circuit
39
AF SW pulse input
terminal
Input terminal of AF SW pulse.
50Hz/60Hz
5V
Hi ; 3.5V to 5V
Low ; 0V to 1.5V
2kΩ
0V
40
MTS MODE OUT
DC;
Detection result output
for M.T.S. signal.
BILINGAL : 3.0V
STEREO : 2.0V
MONO
: 1.0V
1kΩ
49
MUTE control terminal
DC;
Mute control terminal.
51
52
FSC IN
Input terminal for FSC (3.58MHz).
15pF
1kΩ
20kΩ
20kΩ
Band gap power supply terminal of M.T.S
block.
PCREG76
DC; 1.2V
This power supply does not
operate in PB mode.
8kΩ 1kΩ
53
62
63
68
76
NC pin
Continued on next page.
PS No.7955-12/21
LA72680M
Continued from preceding page.
DC voltage
AC level
Pin
Pin Function Name
No.
Function
Equivalent circuit
55
56
57
PHASE
COMPARATOR(BIL.)
This detection pin becomes High(4.0V or
more) because of detecting BIL, when BIL
signal is input.
25kΩ
1kΩ
PHASE
COMPARATOR(ST.)
This detection pin becomes High(4.0V or
more) because of detecting ST, when ST
signal is input.
SIF INPUT
Input terminal for SIF.
The input impedance is about 1kΩ. Be care
for about pattern layout of the input circuit,
because of causing buzz-beat and buzz by
leaking noise signal into the input
terminal.(The noise signal depending on
sound is particularly video signal and chroma
signal and so on. VIF carrier becomes noise
signal.)
500Ω
500Ω 1kΩ
1kΩ
Composite signal of MTS can be input by
adding 5V to this terminal directly.(For test)
58
FM FILTER
Filter terminal for making stable DC voltage
of FM detection output in SIF part.
Normally, use a condenser of 1µF. Increase
the capacity value with concerning frequency
characteristics of low level.
This terminal becomes composite signal
input terminal of MTS by changing to 5V at
Pin57.
1kΩ
1kΩ
59
REG FILT
DC; 4.5V
Filter terminal of reference
voltage source
1kΩ
to SIF block
to MTS block
60
FILTER AUTO ADJ
DC; 3.8V
Loop filter terminal for
automatic adjusting.
40kΩ
1kΩ
Continued on next page.
PS No.7955-13/21
LA72680M
Continued from preceding page.
DC voltage
AC level
Pin
Pin Function Name
No.
Function
Equivalent circuit
61
AM DETECTOR
Reference terminal of AM detection.
V
CC
30kΩ
30kΩ
1kΩ
1kΩ
30kΩ
64
65
75
DC FILTER
DC ; 3.8V
Absorbing the DC offset of signal line by
external capacity.
450kΩ
450kΩ
200Ω
15kΩ
66
JUST CLOCK OUT
Rectangle wave output for JUST CLOCK.
5V
67
JUST CLOCK AMP
OUT
DC ; 3.8V
DC ; 3.8V
DC; 4.15V
20dB amplifire output for JUST CLOCK.
45kΩ 500Ω
72
COMPARATOR Input
Terminal
Comparator input for JUST CLOCK.
1kΩ
78
80
Line Out(R) terminal
Line Out(L) terminal
PS No.7955-14/21
LA72680M
Through Monitor Signal Path Description
1. The Through Monitor signal path is as follows.
When Serial Data G3D3 is set to "1", signal is output to LINE OUT and REC OUT.
2. reference input signal level.
EXT1,2,3 pin : -28.2dBV
Through Monitor pin : -21.2dbV
From MTS
69pin
EXT1
71pin
INPUT
SELECTOR
R-ch EXT2
EXT3
73pin
78pin
S10(G3,D3)
MATRIX/OUT
SELECTOR
74pin
+
Through
Monitor IN(R)
LINE OUT(R)
From MTS
2pin
11pin
9pin
7pin
REF OUT
EXT3
INPUT
SELECTOR
L-ch EXT2
EXT1
80pin
S10(G3,D3)
MATRIX/OUT
SELECTOR
12pin
+
Through
Monitor IN(L)
LINE OUT(L)
Through Monitor Switch Mode Table
Through Monitor
Auto HiFi Det
HiFi/Mix/Nor
Line Out Lch
Line Out Rch
Insel R
RFC Out
Insel Mix
G3D3
G2D6
G2D4D3
0 0
EE
0
1
0
0
1
1
0
0
1
1
-
Insel L
-
0 0
Monitor L
PB L
Monitor R
PB R
Monitor Mix
PB Mix
PB
0
1
0
1
0
1
0
1
0 0
(HiFi Tape)
0 0
PB L
PB R
PB Mix
0 0
Monitor L
Monitor L
Normal
Noise
Monitor R
Monitor R
Normal
Noise
Monitor Mix
Monitor Mix
Normal
0 0
PB
0 0
(Nor. Tape)
0 0
Noise
0 0
Normal
Normal
Normal
0 0
Monitor L
Monitor R
Monitor Mix
* When output Monitor signal to RFC OUT at Normal Tape replayed (G3D3:1), set G2D6 (HiFi auto Distinction) to 1 and select G2D4D3:0 (HiFi).
PS No.7955-15/21
LA72680M
Through Monitor Signal Path Supplementary Explanation
When output Monitor signal to RFC OUT at the time of replay (especially Normal Tape), care must be taken as
described below.
This IC has a function to auto distinguish HiFi and Normal by the presence or absence of Rch envelope, which can be
turned ON/OFF by using G2D6.
When output Monitor signal to REF OUT at the time of replay, turn off this function and make the following settings.
1) G2D6:1 (Auto detection OFF)
2) G3D3:1 (Select Through Monitor)
3) G2D4D3:00 (Select HiFi) Refer to the Through Monitor Switch Table above for each switch mode.
34pin
PB_FM_IN
48pin
PNR(L)
DEMOD(L)
Noise_DET
BPF(L)
FM_Level
Slicer
From MTS
23pin
Tracking
DC_Curve
30pin
47pin
Tracking_DC
G2D6
Auto-Det. ON/OFF
0:ON
69pin
71pin
73pin
EXT1
R-ch EXT2
EXT3
G1D8D7
G3D3
NOR
HiFi
1:OFF
INPUT
SELECTOR
PB
EE
G1D6
MUTE
Through
Monitor
78pin
LINE OUT(R)
74pin
+
MIX G2D4D3
Through
Monitor IN(R)
4pin
VREF
2pin
NORMAL
From MTS
VREF
REF OUT
11pin
9pin
7pin
EXT3
G1D8D7
MIX
EE
PB
INPUT
SELECTOR
G1D6
MUTE
G3D3
L-ch EXT2
EXT1
HiFi
NOR G2D4D3
80pin
Through
Monitor
LINE OUT(L)
12pin
+
Through
Monitor IN(L)
+
PNR(L)
DEMOD(L)
BPF(L)
VREF
14pin 13pin
PS No.7955-16/21
LA72680M
Input Selecting Switch Mode Table (Switch output signal)
Sub address
0
1
0
2
HiFi
HiFi
NORMAL OUT
Reference
Lch Input
Rch Output
Data byte
D8
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
D7
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D3
D2
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
*
D1
1
0
0
0
1
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
*
D8
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
*
D7
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
*
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
*
TU L
EXT1 L
EXT2 L
EXT3 L
TU L
TU R
EXT1 R
EXT2 R
EXT3 R
TU R
TU L+TU R
EXT1 L+EXT1 R
EXT2 L+EXT2 R
EXT3 L+EXT3 R
TU L
2
3
4
5
6
EXT1 L
EXT2 L
EXT3 L
TU L
EXT1 R
EXT2 R
EXT3 R
TU R
EXT1 L
7
EXT2 L
8
EXT3 L
9
TUR
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
EXT1 L
EXT2 L
EXT3 L
PB L
EXT1 R
EXT2 R
EXT3 R
PB R
PB L
PB R
EXT1 L+EXT1 R
EXT2 L+EXT2 R
EXT3 L+EXT3 R
PB L
PB R
PB L
PB R
PB L
PB R
PB L
PB R
EXT1 L
EXT2 L
EXT3 L
PB L
PB R
PB L
PB R
PB L
PB R
PB L
PB R
PB L
PB R
PB L
PB R
PB L
PB R
PB L
PB R
PB L+PB R
Audio-dubbing
correspond
NOTE : * is option.(1 or 0)
PS No.7955-17/21
LA72680M
Input selecting switch mode table ( Switch output signal )
Sub
address
Data
byte
0
1
0 2
HiFi(80Pin
Lch Output
HiFi(78Pin)
Rch Output
NORMAL OUT
(6Pin)
Reference
D8
D7
D3
D2
D8
D7
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
*
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
*
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
*
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
1
1
1
1
1
0
0
0
0
*
TU L
EXT1 L
EXT2 L
EXT3 L
TU L
TU R
EXT1 R
EXT2 R
EXT3 R
TU R
TU L+TU R
EXT1 L+EXT1 R
EXT2 L+EXT2 R
EXT3 L+EXT3 R
TU L
2
3
4
5
6
EXT1 L
EXT2 L
EXT3 L
TU L
EXT1 R
EXT2 R
EXT3 R
TU R
EXT1 L
7
EXT2 L
8
EXT3 L
9
TU R
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
EXT1 L
EXT2 L
EXT3 L
PB L
EXT1 R
EXT2 R
EXT3 R
PB R
TU R
TU R
TU R
TU L+TU R
EXT1 L+EXT1 R
EXT2 L+EXT2 R
EXT3 L
PB L
PB R
PB L
PB R
PB L
PB R
PB L
PB R
TU L
PB L
PB R
EXT1 L
PB L
PB R
EXT2 L
PB L
PB R
EXT3 L
PB L
PB R
TU R
PB L
PB R
-
PB L
PB R
-
PB L
PB R
-
PB L
PB R
PB L+PB R
Audio-dubbing
correspond
NOTE : * is option.(1 or 0)
PS No.7955-18/21
LA72680M
Serial data specification ( I2C BUS communication )
Data Byte (An underline is the first condition.)
Address
MSB
D8
LSB
D1
D7
D6
LINE OUT
MUTE
D5
D4
EE/REC
D3
D2
Input Source Select
001:TUNER
010:EXT1
EE/PB/Audio-dubbing
Power Save
( 01 )
00000001
00:EE
01:PB
0:OFF
1:ON
0:ON
1:OFF
0:EE
1:REC
100:EXT2
110:EXT3
10:Audio-dubbing
Normal Input Source Select
Auto_HiFi
Det
Just In Clock
OUTPUT MODE SELECT
OUTPUT SOURCE SELECT
00:L/R MIX
01:Lch
10:TU(R)
00:HiFi
01:MIX
(HiFi+NOR)
10:NORMAL
00:STEREO
01:L-ch
10:R-ch
( 02 )
00000010
0:ON
1:OFF
0:OFF
1:ON
VCO
carrier
(MHz)
REC FM MIX
DO
ON/OFF
LINE OUT
signal level
THROUGH
MONITOR
HiFi DET
LEVEL
SELECT
HiFi DET
LEVEL
SELECT
00:9dB
01:8dB
10:10dB
11:11dB
( 03 )
00000011
0:ON
1:OFF
0:-9dBV
1:-8dBV
0:OFF
1:ON
0:1.3/1.7
1:1.4/1.8
0:TYP
1:+10%
0:TYP
1:-10%
Fixed 0
Normal
Input gain
REC current level select
NORMAL
OUT
MUTE
Fixed 0
Fixed 0
RF MOD
ALC level
INPUT ALC
00:CENTER
01:-1.5dB
10:-5.5dB
( 04 )
00000100
0:-5dBV
1:-1dBV
0:ON
1:OFF
0:0dB
1:3dB
0:OFF
1:ON
MULTIPLEX mode select
Forced
MONO
Fixed 0
EP/SP
Fixed 0
Fixed 0
( 05 )
00000101
00:BILINGUAL
01:MAIN
0:OFF
1:ON
0:SP
1:EP
10:SUB
( 06 )
00000110
( 07 )
Fixed 0 / Use in investigating the shipment.
Fixed 0 / Use in investigating the shipment.
00000111
Note: Address 00000110 and 00000111 are used in investigating the shipment, please send “0” data to all bits at refreshing the data.
PS No.7955-19/21
LA72680M
I2C BUS serial interface specification
(1) DATA TRANSFER MANUAL
This IC adopts control method(I2C-BUS) with serial data, and controlled by two terminals which called SCL(serial
clock) and SDA (serial data).At first, set up the condition of starting data transfer*1, and after that, input 8 bit data to
SDA terminal with synchronized SCL terminal clock. The order of transferring is first, MSB (the Most Scale of
Bit),and save the order. The 9th bit takes ACK (ACKnowledge) period, during SCL terminal takes “H”, this IC pull
down the SDA terminal. After transferred the necessary data, two terminals lead to set up and of data transfer stop
condition*2, thus the transfer comes to close.
As a part of transfer data write down to internal memory (V latch system), internal control
doesn’t change just after the transfer.
*1 Defined by SCL rise down SDA during ‘H’ period.
*2 Defined by SCL rise up SDA during ‘H’ period.
(2) TRANSFER DATA FORMAT
After transfer start condition, transfers slave address(1110100*) to SDA terminal, next, sub address(0000****),
control data*3, then, stop condition(See figure 1). And this LSI have a auto address increment function, then, next of
slave address transfer, transfer sub address(n)*4, group (n ) data, after that, group (n+1) and so on.
Data works with all of the bit, transfer the stop condition before stop 8bit transfer, and to stop transfer, it will be
canceled only the data of group.
*3 There are 1 to 5 groups.
*4 Pointed date by sub address becomes group No. of next control data.
Fig.1 DATA STRUCTURE “WRITE” mode
START
Condition
Slave
Address
R/W
L *5
……
ACK Sub Address(n) ACK Control data(n) ACK control data(n+1) ACK
STOP condition
*5 It is called R/W bit.
data-1 means data for group-1, data-2 means data for group-2.
(3) INITIALIZE
This IC is initialized for circuit protection.
The initialization period is decided Pin 16 capacity value by internal impedance 15kΩ, and shown with
t = -CR×Ln(0.2). Data cannot be accepted for this period.
t = 530ms at C = 22µF, In this case, Please transmit data in consideration of the uneven after about 700ms.
PS No.7955-20/21
LA72680M
(4) SERIAL INPUT SIGNAL FORMAT
Parameter
Symbol
VIL
min
-0.5
max
unit
V
LOW level input voltage
1.5
5.5
3.0
HIGH level input voltage
VIH
3.0
V
LOW level output current
SCL clock frequency
IOL
-
mA
kHz
µs
µs
µs
µs
µs
µs
µs
ns
µs
µs
fSCL
0
4.7
4.0
4.7
0
100
Set-up time for a repeated START condition
tSU:STA
tHD:STA
tLOW
tR
Hold time START condition. After this period, the first clock pulse is generated
LOW period of the SCL clock
Rise time of both SDA and SDL signals
HIGH period of the SCL clock
1.0
tHIGH
tF
4.0
0
-
Fall time of both SDA and SDL signals
Data hold time:
1.0
tHD:DAT
tSU:DAT
tSU:STO
tBUF
0
-
-
-
-
Data set-up time
250
4.0
4.7
Set-up time for STOP condition
BUS free time between a STOP and START condition
(5) Definition of timing
tHIGH
tR
tF
SCL
SDA
tSU:DATA
tHD:DATA
tHD:STA
tSU:STA
tLOW
tSU:STO
tBUF
SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using
products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor Co.,Ltd.
products described or contained herein.
SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all
semiconductor products fail or malfunction with some probability. It is possible that these probabilistic failures or
malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise
to smoke or fire, or accidents that could cause damage to other property. When designing equipment, adopt
safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not
limited to protective circuits and error prevention circuits for safe design, redundant design, and structural
design.
In the event that any or all SANYO Semiconductor Co.,Ltd. products described or contained herein are
controlled under any of applicable local export control laws and regulations, such products may require the
export license from the authorities concerned in accordance with the above law.
No part of this publication may be reproduced or transmitted in any form or by any means, electronic or
mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise,
without the prior written consent of SANYO Semiconductor Co.,Ltd.
Any and all information described or contained herein are subject to change without notice due to
product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the
SANYO Semiconductor Co.,Ltd. product that you intend to use.
Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed
for volume production.
Upon using the technical information or products described herein, neither warranty nor license shall be granted
with regard to intellectual property rights or any other rights of SANYO Semiconductor Co.,Ltd. or any third
party. SANYO Semiconductor Co.,Ltd. shall not be liable for any claim or suits with regard to a third party's
intellctual property rights which has resulted from the use of the technical information and products mentioned
above.
This catalog provides information as of April, 2007. Specifications and information herein are subject
to change without notice.
PS No.7955-21/21
相关型号：
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