Sanyo LA75665NM Specifications
Overview
The LA75665NM is a VIF/SIF IC that supports PAL and
NTSC multisound and that adopts a semi-adjustment-free
system. To simplify adjustment, the VIF block adopts a
technique in which AFT adjustment is no longer required
by VCO adjustment. The SIF block supports audio multidetection by adopting a PLL detection technique. The SIF
block provides 4 inputs with IC internal switching for easy
design of multi-sound systems. Additionally, these
switches can also be used for video system sound trap
switching. The LA75665NM also includes a buzz
canceller that suppresses Nyquist buzz to achieve
improved audio quality.
Features
• No coils are used in the AFT and SIF blocks, making
these circuits adjustment free.
• PAL / NTSC multisound system can be constructed
easily.
• Built-in buzz canceller for excellent audio performance
Functions
[VIF Block]
• VIF amplifier
• PLL detector
• BNC
• RF AGC
• EQ amplifier
• AFT
• IF AGC
• Buzz canceller
[First SIF Block]
• First SIF amplifier
• First SIF detector
• AGC
[SIF Block]
• Multiple input switch
• Limiter amplifier
• PLL FM detector
Package Dimensions
unit: mm
3112-MFP24S
Monolithic Linear IC
41501RM (OT) No. 6954-1/12
Preliminary
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
VIF/SIF IF Signal-Processing Circuit with TV/VCR PAL
and NTSC Multisound Support
LA75665NM
Ordering number : ENN*6954
Any and all SANYO products described or contained herein do not have specifications that can handle
applications that require extremely high levels of reliability, such as life-support systems, aircraft’s
control systems, or other applications whose failure can be reasonably expected to result in serious
physical and/or material damage. Consult with your SANYO representative nearest you before using
any SANYO products described or contained herein in such applications.
SANYO 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 products described or contained
herein.
SANYO: MFP24S
[LA75665NM]
1.0
13
5.4
1.8max
1.5
0.1
0.8
0.15
6.35
0.625
24
112
12.6
0.35
7.6
No. 6954-2/12
LA75665NM
100
0
200
300
400
420
500
600
700
720
800
–20 0 20 40 60 70 80 100
Pd max — Ta
Ambient temperature, Ta — °C
Allowable power dissipation, Pd max — mW
Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
CC
max 6V
Circuit voltage V7, V10, V
CC
V
I1 –2 mA
Circuit current I13 –3 mA
I18 –10 mA
Allowable power dissipation Pd max
Ta ≤ 50°C, independent IC 420 mW
When mounted on a printed circuit board* 720 mW
Operating temperature Topr –20 to +70 °C
Storage temperature Tstg –55 to +150 °C
Specifications
Maximum Ratings at Ta = 25°C
Parameter Symbol Conditions Ratings Unit
Recommended supply voltage V
CC
5V
Operating supply voltage range V
CC
op 4.6 to 5.5 V
Operating Conditions at Ta = 25°C
Note: * Size: 65 × 72 × 1.6 mm3, Material: paper/phenol composite
Independent IC
With substrate (65 × 72 × 1.6 mm
3)
No. 6954-3/12
LA75665NM
Parameter Symbol Conditions
Ratings
Unit
min typ max
[VIF Block]
Circuit current I3 39 46 53 mA
Maximum RF AGC voltage V9H 4.5 4.9 V
Minimum RF AGC voltage V9L 0 0.5 V
Input sensitivity V
IN
S1 = OFF 29 35 41 dBµV
AGC range G
R
45 50 dB
Maximum allowable input V
IN
max 95 100 dBµV
No-signal video output voltage V13 3.2 3.5 3.8 V
Sync tip voltage V13 tip 0.8 1.0 1.2 V
Video output level V
O
1.55 1.85 2.15 Vp-p
Black noise threshold voltage V
BTH
0.3 0.6 0.9 V
Black noise clamp voltage V
BCL
1.5 1.8 2.1 V
Video signal-to-noise ratio S/N 48 52 dB
C-S beat IC-S 44 49 dB
Frequency characteristics f
C
6 MHz –3 –1.5 dB
Differential gain DG 38%
Differential phase DP 3 8 deg
AFT voltage with no input signal V10 4 4.5 5.0 V
Maximum AFT voltage V10H 4.2 4.8 5.0 V
Minimum AFT voltage V10L 0 0.1 0.2 V
AFT detection sensitivity Sf 19 25 32 mV/kHz
VIF input resistance Ri 38.9 MHz 1.5 kΩ
VIF input capacitance Ci 38.9 MHz 3 pF
APC pull-in range (U) f
PU
1.0 1.5 MHz
APC pull-in range (L) f
PL
–1.5 –0.8 MHz
AFT tolerance frequency 1 dfa1 –200 0 +200 kHz
VCO 1 maximum variability range (U) dfu 1.3 1.5 MHz
VCO 1 maximum variability range (L) dfl –1.5 –0.75 MHz
VCO control sensitivity B 1.25 2.3 5.0 kHz/mV
Drift when the AFT switch is on Drift 3s
[First SIF Block]
Conversion gain VG 30 33 36 dB
5.5 MHz output level S
O
95 135 190 mVrms
Maximum first SIF input S
IN
max 27 55 mVrms
First SIF input resistance R
IN
(SIF) 33.4 MHz 2 kΩ
First SIF input capacitance C
IN
(SIF) 33.4 MHz 3 pF
[SIF Block]
Limiting sensitivity VIi(lim) 36 42 dBµV
FM detector output voltage V
O
(FM) 5.5 MHz ± 30 kHz 450 570 720 mVrms
AM rejection ratio AMR 50 60 dB
Total harmonic distortion THD 0.2 1.5 %
SIF S/N S/N (FM) 55 60 dB
FM detector output DC voltage FMDC 2.0 2.35 2.70 V
[SIF Switch Block] Switches A, B, and C: H = open, L = ground
NTSC mode 6-dB amplifier NTSW 5 6 7 dB
SIF crosstalk 21 CT21 51 57 dB
SIF crosstalk 22 CT22 51 57 dB
SIF crosstalk 23 CT23 51 57 dB
SIF crosstalk 24 CT24 51 57 dB
Switch threshold low-level voltage SW (L) 1.0 1.5 2.0 V
Operating Characteristics at Ta = 25°C, VCC= 5 V, fp = 38.9 MHz
Pin Assignment
No. 6954-4/12
LA75665NM
1 2 3 4 5 6 7 8 9 10 11 12
131415161718192021222324
FM DET OUT
SIF FILTER
V
CC
GND
VIF IN
VIF IN
IFAGC
1st SIF IN
RFAGC OUT
AFT OUT
VCO COIL
VCO COIL VIDEO OUT
EQ FILTER
PAL VIDEO IN
NT VIDEO IN
APC
COMP OUT
1st SIF OUT
FM FILTER
SIF IN (4.5MHz)
SIF IN (5.5MHz)
SIF IN (6.0MHz)
SIF IN (6.5MHz) /RFAGC VR
A12481
LA75665NM
Top view
Application Circuit Diagram
H : OPEN
L : GND
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
+
+
+
+
0.01 µF
1 µF
100 µF
0.01 µF
0.022 µF
0.01 µF
30 kΩ
150 Ω
2.2 kΩ
2.2 kΩ
5.1 kΩ
2.2 kΩ
150 Ω
560 Ω
330 Ω
330 Ω
15 µH
8.2 µH
4.5 MHz
4.5 MHz
330 Ω
5.5 MHz
330 Ω
6.0 MHz
330 Ω
6.5 MHz
5.5 MHz, 6.0 MHz, 6.5 MHz
0.01 µF
0.47 µF
1 µF
30 pF
47 µH
0.01 µF
0.01 µF
0.01 µF
100 kΩ 100 kΩ
3 kΩ
2.2 kΩ
AUDIO
OUT
RFAGC
OUT
AFT
OUT
VIDEO
OUT
C
B
A
V
CC
SAW(P)
SAW
(S)
A12482
FM
DET
AFT
VCO
RF
AGCIFAGC
F
VIDEO
DET
LIM
AMP
VIF
1ST SIF
DET
EQ
AMP
INPUT SW
1ST
AMP
Switch
5.5 MHz 6.0 MHz 6.5 MHz 4.5 MHz
ABC
HHH
●●
HHL ●●
HLH ●●
HLL ●●
LHH ●● ●● ●●
LLL ●● ●● ●● ●●
LHL ●● ●●
LLH ●● ●●
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