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
Maximum power supply voltage 2
Always power supply voltage
Allowable power dissipation
Operating ambient temperature
Storage ambient temperature
Symbol
VCCH max
VCCL max
VCCA max
Pd max
Topr
Tstg
Ta=70°C *
Conditions
Ratings
9.6
6
6
1300
-10 to +70
-55 to +150
Unit
V
V
V
mW
°C
°C
* On board: 114.3mm×76.1mm×1.6mm, glass epoxy board.
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
July, 2013
41807 MS PC B8-6946,B8-6871 No.7955-1/21
LA72680M
Operating Conditions
at Ta = 25°C
Parameter
Recommended operating
voltage 1
Recommended operating
voltage 2
Recommended always voltage
Allowable operating voltage 1
Allowable operating voltage 2
Allowable operating always
voltage
VCCA
VCCH op1
VCCL op2
VCCA op3
5
8.5 to 9.5
4.8 to 5.3
4.5 to 5.5
V
V
V
V
VCCL
5
V
Symbol
VCCH
Conditions
Ratings
9
Unit
V
Electrical Characteristics
at Ta
=
25°C, VCCH=9V, VCCL=5V, VCCA=5V
Parameter
Current dissipation
REC&EE 9V
Current dissipation EE 5V
Current dissipation REC
5V
Current dissipation PB 9V
Current dissipation PB 5V
Current dissipation
always power supply
Output level 1
Output level 2
Output distortion
Channel gain difference
Maximum output level
Output noise level
Mute attenuation value
Input switch cross-talk
VO1
VO2
THD
ΔV
O
VOM
VNO
MU
CT
ICCP1
ICCP2
ICCAL
ICCE1
ICCR2
Symbol
ICCR1
Conditions
No signal, Inflow current at Pin 3/54
G1D8D7:00
No signal, Inflow current at Pin 15/32/36/46
G1D8D7:00
No signal, Inflow current at Pin 15/32/36/46
G1D8D7:00, G1D4:1
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
VIN=-28.2dBV, Gain=1 (G3 D4:0)
VIN=-28.2dBV, Gain=2 (G3 D4:1)
VIN=-28.2dBV, Gain1, 2
VIN=-28.2dBV, Gain1, 2
THD=1%, Gain1, 2
Rg=1kΩ, JIS-A filter, Gain1
VIN=-18.2dBV
VIN=-18.2dBV
VIN=-28.2dBV
VIN=-21.2dBV, G2D4D3:10
VIN=-21.2dBV, G2D4D3:10
VIN=-11.2dBV, G2D4D3:10
VIN=-11.2dBV, G2D4D3:10
VIN= -11.2dBV, G2D4D3:10, G4D2:1
VIN= -11.2dBV, G2D4D3:10, G4D2:1
VIN=-21dBV, Gain=1 mode (G2D4:0)
Input no signal
Input no signal
VIN=-28.2dBV
Non modulation
Non modulation, VfoR/VfoL, G3D7D6;01
Non modulation, VfoR/VfoL, G3D7D6;00
Non modulation, VfoR/VfoL, G3D7D6;10
Non modulation, VfoR/VfoL, G3D7D6;11
11
-3.0
-7.0
-22.5
-1
7
-10.5
-9.5
-9
-8
0.05
0
8.5
-89
-91
-75
-85
-80
-68
-7.5
-6.5
0.15
1
dBV
dBV
%
dB
dBV
dBV
dB
dB
0.8
1.0
1.2
mA
76
90
104
mA
9
11
13
mA
63
89
75
105
87
121
mA
mA
Ratings
min
42
typ
50
max
58
Unit
mA
EE through
(LINE IN to LINE OUT), EE mode, f=1kHz, L/R-ch
Normal output
(LINE IN to NORMAL OUT), EE mode, f=1kHz
Output level for Normal
VONOR
VOR
THDR
VOAR1
THDAR1
VOAR2
THDAR2
-21.5
-20.5
dBV
RFC output
(NORMAL IN to RFC OUT), f=1kHz
Output level
Output distortion
ALC level (1)
ALC distortion (1)
ALC level (2)
ALC distortion (2)
-11.0
-9.5
0.05
-5.5
0.3
-1.5
0.1
-8.0
0.2
-4.0
0.5
0
0.3
dBV
%
dBv
%
dBv
%
LINE AMP
(NORMAL IN to LINE OUT), EE mode, f=1kHz, Left channel and Right channel
Line amp gain
GVL
12
13
dB
REC system
(LINE IN to VCO OUT), f=1kHz
Free-running frequency L
Free-running frequency R
Standard frequency deviation
L&R
Carrier output level Lch
FM R/Lch MIX ratio 1
FM R/Lch MIX ratio 2
FM R/Lch MIX ratio 3
FM R/Lch MIX ratio 4
VfoL
MIX1
MIX2
MIX3
MIX4
380
7.1
8.1
9.1
10.1
440
7.6
8.6
9.6
10.6
500
8.1
9.1
10.1
11.1
mVp-p
dB
dB
dB
dB
fOL
fOR
DEV
1.294
1.694
±46
1.300
1.700
±50
1.306
1.706
±54
MHz
MHz
kHz
Continued on next page.
No.7955-2/21
LA72680M
Continued from preceding page.
Parameter
Symbol
Conditions
Ratings
min
typ
max
Unit
FM modulation system
(PB FM IN to LINE OUT), PB mode, FM standard input=300mVp-p(R/Lch ratio=1:1)
Output level Lch
Output level Rch
Output level difference
VOPL
VOPR
VDEM
fc=1.3±50kHz, fm=1kHz, Gain=1 (G3D4:0)
fc=1.7MHz±50kHz, fm=1kHz, Gain=1 (G3D4:0)
fc=1.3MHz±50kHz, fm=1kHz
fc=1.7MHz±50kHz, fm=1kHz
Lch-Rch, Gain=1 (G3D4:0)
Output distortion Lch
Output distortion Rch
THDPL
THDPR
fc=1.3MHz±50kHz, fm=1kHz,DIN
fc=1.7MHz±50kHz, fm=1kHz, DIN
0.3
0.3
0.5
0.5
%
%
-11
-11
-1.5
-9
-9
0
-7
-7
1.5
dBV
dBV
dB
DO detector / HiFi detector
PB mode(DO DET : fc=1.3MHz / HiFi DET : fc=1.3MHz & 1.7MHz),
DO detection level
DO detection hysteresis
HiFi recovery delay time
HiFi detection DC output 1
HiFi detection DC output 2
HiFi detection DC output 3
NORMAL detection
DC output
Hold pulse occurrence
PB mode
Hold pulse delay time
Hold pulse width
HPD
HPW
AUDIO HEAD PULSE IN
AUDIO HEAD PULSE IN
0.8
7.2
1.0
9.0
1.2
10.8
μs
μs
DOC
DOCH
HIDEL
VTRS1
VTRS2
VTRS3
NORDC
The delay time that is changed from NORMAL
to HiFi.
Pin 34 input level=100mVp-p
Pin 34 input level=300mVp-p
Pin 34 input level=1Vp-p
Pin 34 input level=0mVp-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
The ratio with Standard input
pin 31=300mVp-p
0.5
110
3
125
5
140
dB
ms
-26
-23
dB
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
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
frequency characteristics 3
Voltage gain
Voltage gain difference
CH1/CH2
EP gain boost value
Frequency characteristics
Input conversion noise voltage
Output DC offset
ΔGEP
ΔfP
VNINP
ΔV
ODC
IOR
CMDO4
CMDO9
IOR+2dB
IOR-2dB
IORMU
0.4MHz component
Cross modulation distortion
0.9MHz component
current ratio +2dB
current ratio -2dB
Mute attenuation value
P23:0V,G4D6D5:01
P23:0V,G4D6D5:10
REC MUTE ON(pin 17:5V)
1.6
-2.4
2.0
-2.0
2.4
-1.6
-40
dB
dB
dB
Rch carrier level standard
-55
-40
dB
VIN=100μVp-p, f=1.5MHz
VIN=100μVp-p, f=1.8M/1.0MHz, CH1&2
The value(1 / GVP) of 1.1MHz LPF output
level
CH1/CH2
-30
0
30
mV
REC AMP system
REC mode, The external resistor at pin 28 = 2.7kΩ
REC current
Cross modulation distortion
Inflow current at pin 26
Rch carrier level standard
34
37
-48
40
-40
mA
dB
1
-3
2
-1
1.7
3.2
1
2
dB
dB
μVrms
GVP
ΔGVP
R185N
R155N
R145N
L155N
L145N
V13
V17
L115N
34pin input level =60mVp-p,G2D2D1:01
34pin input level =60mVp-p,G2D2D1:01
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
VIN=100μVp-p, f=1.5MHz, CH1&2
66
-2
69
0
72
2
dB
dB
-9
-3
dB
-9
-3
dB
-15
-5
dB
-20
-10
dB
-13
-5
dB
80
60
-13
100
80
-5
120
100
mVp-p
mVp-p
dB
Playback head amp system
(PB HEAD AMP IN to OUT), PB mode
Continued on next page.
No.7955-3/21
LA72680M
Continued from preceding page.
Parameter
Symbol
Conditions
Ratings
min
typ
max
Unit
SIF system
(SIF IN to SIF OUT), EE/REC mode
Input level
VILIM
fc=4.5MHz
80
90
100
dBμV
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
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Industrial Control Electronics
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