Ordering number : ENA0648
Monolithic Linear IC
LA75520K
Overview
IF Signal Processing (VIF+SIF) IC
that Supports the PAL Video
Standard for TV Sets and VCRs
The LA75520K is a fully adjustment-free VIF + SIF signal processing IC for TV sets and VTRs that supports the PAL
video standard. It supports 38.0MHz, 38.9MHz, and 39.5MHz as the IF frequencies, as well as PAL sound multi-system
(M/N, B/G, I and D/K), and contains an on-chip sound carrier trap. The IC employs a 4MHz frequency (which can be
switched to 4.43MHz) as the reference frequency of the adjustment free circuit, and controls the VCO, AFT, and sound
filter using an external input signal.
Features
•
Internal VCO adjustment free circuit eliminating the need for an external VCO coil.
•
Internal sound carrier trap enables easy configuration of PAL sound multi-system at low cost.
•
Considerably reduces the number of required peripheral parts.
•
Use of digital AFT eliminates a problem of AFT tolerance.
•
Package: DIP24S (300mil)
Functions
•
VIF amplifier
•
Adjustment-free VCO and PLL detector circuit
•
Digital AFT circuit
•
RF AGC
•
Buzz canceller
•
EQAMP
•
Internal sound carrier trap
•
First SIF detector circuit
•
PLL-FM detector circuit
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
'
s products or
equipment.
80807 MS PC 20070110-S00002 No.A0648-1/12
LA75520K
Specifications
Maximum Ratings
at Ta = 25°C
Parameter
Maximum supply voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VCC
Pd max
Topr
Tstg
Ta
≤
70°C, Mounted on a substrate.*
Conditions
Ratings
6
700
-20 to +70
-55 to +150
Unit
V
mW
°C
°C
* Mounted on a substrate : 76.1×114.3×1.6mm
3
, glass epoxy board.
Operating Conditions
at Ta = 25°C
Parameter
Recommended supply voltage
Operating supply voltage
Symbol
VCC
VCC op
Conditions
Ratings
5.0
4.5 to 5.5
Unit
V
V
Electrical Characteristics
at Ta = 25°C, VCC = 5.0V, fp = 38.9MHz
Parameter
VIF block
Circuit current
Max RF AGC voltage
Min RF AGC voltage
Input sensitivity
AGC range
Max allowable input
Quiescent video output voltage
Sync signal edge voltage
Video output level
Black noise threshold voltage
Black noise clamp voltage
Video S/N
C-S best
Differential gain
Differential phase
Quiescent AFT voltage
Max AFT voltage
Min AFT voltage
AFT sensitivity
APC pull-in range (U)
APC pull-in range (L)
VCO control sensitivity
VIF input resistance
VIF input capacity
N trap1 (4.5M)
N trap2 (4.8M)
BG trap1 (5.5M)
BG trap2 (5.85M)
I trap1 (6.0M)
I trap2 (6.55M)
DK trap1 (6.5M)
Group delay 1 NTSC (3.0M)
Group delay 1-1 NTSC (3.5M)
Group delay 2 BG (4M)
Group delay 2-1 BG (4.4M)
Group delay 3 I (4M)
I4
V14H
V14L
Vi
GR
Vi max
V5
V5 tip
VO
VBTH
VBCL
S/N
IC-S
DG
DP
V12
V12H
V12L
SF
Fpu
Fpl
β
Ri
Ci
NT1
NT2
BT1
BT2
IT1
IT2
DT1
NGD1
NGD1-1
BGD2
BGD2-1
IGD3
38.9MHz
38.9MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
wrt 1MHz
15pin to VCC
LOAD 22kΩ/22kΩ
LOAD 22kΩ/22kΩ
LOAD 22kΩ/22kΩ
B/G
P/S = 10dB
VIN = 80dBμ
Video out 2
V1
V2
V3
V4
V5
V6
V7
V8
V9
V10
V11
V12
V13
V14
V15
V16
V17
V18
V19
V20
V21
V22
V23
V24
V25
V26
V27
V28
V29
V30
V31
V32
V33
V34
V35
V36
-30
-19
-27
-20
-25
-15
-25
30
110
50
120
0
3
2.0
4
0
8.5
2.0
75
4.0
0.0
26
58
95
2.2
0.8
1.0
0.5
1.2
46
38
85
4.5
0.5
32
63
100
2.5
1.0
1.2
0.8
1.5
50
43
3
3
2.5
4.5
0.5
12.5
2.4
-2.4
6
1.0
3
-35
-24
-32
-25
-30
-20
-30
80
200
130
200
80
145
290
210
280
130
-2.0
12
1.5
6
6.5
5
3.0
5
1
16.5
2.8
1.2
1.4
1.1
1.8
95
5.0
1.0
38
mA
V
V
dBμV
dB
dBμV
V
V
Vp-p
V
V
dB
dB
%
deg
V
V
V
mV/kHz
MHz
MHz
kHz/mV
kΩ
pF
dB
dB
dB
dB
dB
dB
dB
ns
ns
ns
ns
ns
Symbol
Conditions
No.
min
Ratings
typ
max
Unit
Continued on next page.
No.A0648-2/12
LA75520K
Continued from preceding page.
Parameter
Group delay 3-1 I (4.4M)
Group delay 4 DK (4M)
Group delay 4-1 DK (4.4M)
Video f characteristics MN1
Video f characteristics MN2
Video f characteristics MN3
Video f characteristics BG1
Video f characteristics BG2
Video f characteristics BG3
Video f characteristics I1
Video f characteristics I2
Video f characteristics I3
Video f characteristics DK1
Video f characteristics DK2
Video f characteristics DK3
Group delay 2-2 BG shift (4M)
Group delay 2-3 BG shift (4.4M)
1st SIF Block
SIF carrier output level 1
SIF carrier output level 2
1st SIF max input
1st SIF input resistance
1st SIF input capacity
SIF Block
Limiting sensitivity (SPLIT)
Limiting sensitivity (INTER)
FM detection output voltage
AM removal ratio
Distortion factor
FM detection output S/N
PAL/NT audio voltage gain difference
PAL De-emphasis
NT De-emphasis
Control Block
SIF system SW threshold voltage A/B
38MHz/38.9MHz threshold voltage
38.9MHz/39.5MHz threshold voltage
Inter-carrier system
AFT mute level/SIF trap shift
threshold voltage 1
AFT mute level/SIF trap shift
threshold voltage 2
AFT mute level/SIF trap shift
threshold voltage 3
Others
Ref clock input level
Reference frequency SW threshold
resistance
Continued on next page.
Reflev
R11
4.0MHz
O1
O2
83
150
90
270
95
dBμV
kΩ
V15th3
C7
3.7
4.0
4.3
V
V15th2
C6
2.2
2.5
2.8
V
V7_9th
V10th1
V10th2
V13th
V15th1
C1
C2
C3
C4
C5
0.7
1.0
2.2
0.7
3.7
2.5
1.0
4.0
2.8
1.3
4.3
0.3
1.3
V
V
V
V
V
Vi (lim) (SP)
Vi (lim) (IN)
VO (FM)
AMR
THD
S/N (FM)
GD
Pdeem
Ndeem
P = 80dBμ CW
P = 80dBμ CW
P = 80dBμ P/S
f = 5.5MHz,
ΔF
=
±30kHz
S1
S2
S3
S4
S5
S6
S7
S8
S9
55
20
29
390
50
25
35
560
60
0.3
60
6
-3
-3
0.8
30
41
730
dBμV
dB
mVrms
dB
%
dB
dB
dB
dB
So1
So2
Si max
Ris
Cis
33.4MHz
33.4MHz
Vi = 1mV
Vi = 10mV
F1
F2
F3
F4
F5
21
21
110
43
43
120
2
3
2.4
6
86
86
mVrms
mVrms
dBμV
kΩ
pF
Symbol
IGD3-1
DGD4
DGD4-1
VFMN1
VFMN2
VFMN3
VFBG1
VFBG2
VFBG3
VFI1
VFI2
VFI3
VFDK1
VFDK2
VFDK3
BGD2-2
BGD2-3
wrt 1MHz
wrt 1MHz
wrt 1MHz
M/N 1 to 2MHz
M/N 2 to 3MHz
M/N 3.58MHz
B/G 1 to 3MHz
B/G 3 to 4MHz
B/G 4.43MHz
I 1 to 3MHz
I 3 to 4MHz
I 4.43MHz
D/K 1 to 3MHz
D/K 3 to 4MHz
D/K 4.43MHz
wrt 1MHz
wrt 1MHz
Conditions
No.
min
V37
V38
V39
V40
V41
V42
V43
V44
V45
V46
V47
V48
V49
V50
V51
V52
V53
80
10
30
-1.0
-1.0
-3.0
-1.0
-1.5
-2.5
-1.0
-1.0
-1.5
-1.0
-1.0
-1.5
50
110
Ratings
typ
120
30
60
0.0
0.0
-1.5
0.0
0.0
-1.0
0.0
0.0
0.0
0.0
0.0
0.0
100
180
max
160
50
90
1.0
1.0
0.0
1.5
1.5
0.5
1.0
1.5
1.5
1.0
1.5
1.5
150
250
ns
ns
ns
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
ns
ns
Unit
No.A0648-3/12
LA75520K
Package Dimensions
unit : mm (typ)
3067B
Allowable power dissipation, Pd max – mW
1400
Pd max -- Ta
Specified board : 114.7×76.1×1.6mm
3
glass epoxy
When mounted on a board
21.0
24
13
1200
1100
1000
7.62
6.4
800
0.25
1
12
600
0.9
0.95
3.3 3.9 max
(3.25)
400
200
0
–
20
0.51min
0
20
40
60
70
80
(0.71)
1.78
0.48
SANYO : DIP24S(300mil)
Ambient temperature, Ta – °C
No.A0648-4/12
LA75520K
System changeover
a. SIF system SW
The SIF system can be changed over by setting A (pin 7) and B (pin 9) to GND and OPEN respectively.
A
GND
GND
OPEN
OPEN
B
GND
OPEN
GND
OPEN
O
O
O
BG
I
DK
MN
O
FM DET
LEVEL
6dB
0dB
0dB
0dB
De-emphasis
75μs
50μs
50μs
50μs
Note : Circles mean that the system indicated with a circle is selected
b. IF system SW
The IF frequency becomes 38.9MHz when pin 10 is open.
The IF frequency becomes 38.0MHz when pin 10 is set to GND.
The IF frequency becomes 39.5MHz when pin 10 is set to VCC.
c. Split/inter carrier SW
Inter-carrier is selected by setting the 1st SIF input (pin 13) to GND.
d. Reference frequency changeover SW
The reference frequency becomes 4.43MHz when pin 11 is OPEN.
The reference frequency becomes 4.0MHz when 270kΩ is connected between pin 11 and GND.
e. AFT mute level, trap point shift SW
By changing the pin 15 voltage, the potential and TRAP point at which AFT is muted can be set to either just or shift
(about +220kHz).
Pin 15 potential
VCC to 4V
4V to 2.5V
2.5V to 1V
1V to GND
*
VCC=5V
AFT mute potential
MIDDLE (VCC/2)
MIDDLE (VCC/2)
HI (VCC)
HI (VCC)
TRAP point shift
Just
Shift
Just
Shift
f. FM detector function not used
To stop FM detection VCO without using the SIF circuit, short-circuit pin 1 – GND with resistance of 1kΩ or less.
No.A0648-5/12
嵌入式系统
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