Monolithic Linear LA7437, 7437A Video Signal Processing Syst
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Ordering number EN5473
Monolithic Linear
LA7437, 7437A
Video Signal Processing Systems
Overview
LA7437, 7437A video signal processing singlechip that handles PAL-G, 4.43 NTSC, MESECAM formats. internal trimming used make LA7437, 7437A completely adjustment free, combination with special-purpose (the LC89973M) provides significant reduction external components, including glass delay line. Thus LA7437, 7437A significantly reduce signal processing board manufacturing costs. Furthermore, LA7437, 7437A supports format (NTSC conversion) that poised become widespread Europe, China other markets.
built-in functions circuit AVNS (advanced vertical noise suppresor) Automatic insertion Miniature package (42-pin DIP)
Package Dimensions
unit: 3025B-DIP42S
[LA7437, 7437A]
Features
Completely adjustment free AGC, carrier, deviation, PB-Y level adjustment free. record current also made adjustment free using LA7437, 7437A head amplifier. Support color array correction Full modulation using balanced modulator allows playback conversion format NTSC signals recorded tape. Crosstalk exclusion combination with specialpurpose Crosstalk excluded without using glass delay line combining LA7437, 7437A with specialpurpose (the LC89973M). Minimal number external components built-in components: Detail enhancer C-trap low-pass filter Playback low-pass filter High performance multiple functions Linear phase picture controller Double high-pass noise canceller, high-speed AFC,
SANYO: DIP42S
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, Chome, Ueno, Taito-ku, TOKYO, JAPAN
41096HA (OT) 5473-1/8
LA7437, 7437A
Functions
format signal processing functions
Luminance Video amp. Feed back clamp Main (AVNS) Sync separator regulator Video amp. Video det. Detail enhancer carrier shift amp. det. Double limiter demodulator Double high pass noise canceller QV/QH/character insert Main de-emphasis emphasis Main emphasis White/dark clip modulator Drop det. de-emphasis Picture control 4.43 amp. det. Main converter VXO/XO Side lock det. lock protector amp. Burst emphasis (NTSC) Killer det. det. amp. Burst de-emphasis (NTSC) amp. Killer burst sequence Compensator Carrier balancer Burst gate amp. Chrominance Half killer generator Killer det. Phase shifter converter 5.06 Burst gate amp.
det. det. Trick det. DPLL
Specifications
Maximum Ratings 25°C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Symbol Topr 65°C* Conditions Ratings 1350* +150 Unit
Storage temperature Tstg Note: When mounted thickness Bakelite board. value package 1150
Operating Conditions 25°C
Parameter Recommended supply voltage Operating supply voltage Symbol Conditions Ratings Unit
Operating Characteristics 25°C,
Parameter [Record Mode System] Record mode current drain output level characteristics characteristics characteristics characteristics Sync separator output level Sync separator output pulse width Sync separator output prerecord delay time Sync separator threshold level
Symbol
Conditions
Unit
ICCR VEE1 AGC1 AGC2 AGC3 AGC4 VSYR PWSYR TSYR THSYR
Input: Vp-p video signal Input: system Vp-p video signal Input: system Vp-p video signal Input: system Vp-p video signal Input: system with only SYNC increased Input: system with only SYNC decreased SYNC-OUT output pulse wave height SYNC-OUT output pulse width SYNC-OUT delay time
2.11 1.99
2.21 2.09
2.31 2.19
Vp-p Vp-p Vp-p mVp-p mVp-p
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LA7437, 7437A
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Parameter [Record Mode System] Pseudo-H insertion level White insertion level detection voltage Record operation EP/LP Y-LPF frequency characteristics Y-LPF frequency characteristics Y-LPF frequency characteristics Y-LPF frequency characteristics modulator output level Carrier frequency modulator output harmonic distortion Deviation modulator linearity carrier shift Emphasis gain emphasis characteristics emphasis characteristics emphasis characteristics Main emphases characteristics Main emphases characteristics White clipping level Dark clipping level [Playback Mode System] Playback mode current drain Dropout compensation time loop gain Playback level demodulator linearity Demodulation sensitivity Carrier leakage Playback characteristics LP/EP de-emphasis characteristics de-emphasis characteristics Double noise canceller characteristics Double noise canceller characteristics Double noise canceller characteristics PIC-CTL hard response characteristics PIC-CTL hard response characteristics PIC-CTL soft response characteristics PIC-CTL soft response characteristics Pseudo-V insertion level (playback) Pseudo-H insertion level (playback) ICCP TDOC GDOC VVOUT LDEM SDEM GP-YNR1 GNLDE1 GNLDE2 GWNC1 GWNC2 GWNC3 GPH1 GPH2 GPS1 GPS2 Input: MHz, mVp-p Input: white Input: mVp-p, sine wave Input: mVp-p, sine wave Input: mVp-p, sine wave Input: mVp-p, sine wave Input: 15.8 mVp-p, sine wave Input: video sine wave MHz, mVp-p Input: video sine wave MHz, mVp-p Input: video sine wave MHz, mVp-p Input: video sine wave MHz, mVp-p With applied T19A With applied T19A -2.5 -6.0 -10.5 -1.8 -6.2 -11.7 -4.5 -9.0 -150 -300 later playback signal with deviation 0.72 -1.0 -3.5 0.43 0.85 0.48 -3.0 -5.0 -9.0 -1.3 -5.2 -10.7 -3.5 -7.0 -200 0.98 +1.0 +3.5 0.53 -3.5 -4.0 -7.5 -0.8 -4.2 -8.7 -2.5 -5.0 -100 Vp-p V/MHz VVCA VR-YNR1 YLPF1 YLPF2 YLPF3 YLPF4 FFM1 HMOD DEV1 LMOD GEMP GNLEMP1 GNLEMP2 GNLEMP3 GME1 GME2 Input: Vp-p, sine wave Input: mVp-p, sine wave Input: mVp-p, sine wave Input: mVp-p, sine wave Input: mVp-p, sine wave Input: mVp-p, sine wave Input: Vp-p, white 100% video signal Input: Vp-p, white 100% video signal system 0.95 -0.5 13.1 Input: system standard color signal attenuation with respect attenuation with respect 3.25 attenuation with respect 4.43 attenuation with respect input system With applied T19A With applied T19A -300 2.95 -0.5 -1.0 -200 3.10 1.00 13.6 -100 3.25 +0.5 +1.0 1.05 14.1 mVp-p Vp-p Symbol Conditions Unit
Continued from preceding page.
5473-3/8
LA7437, 7437A
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Parameter [Record Mode System] White insertion level (playback) Sync separator output level Sync separator output pulse width Sync separator output pre-record delay time regulator voltage [Record Mode Chrominance System] Chrominance band conversion output burst level oscillator level Record characteristics Record characteristics killer input level killer output level killer recovery input level control sensitivity pull-in range pull-in range delay time pulse width pull-in range pull-in range VOR-38 VVXO-R1 ACC-R1 ACC-R2 VACCK-ON VO-ACCK VACCK-OFF SVXO fAPC1 fAPC2 fAFC1 fAFC2 VOP-11 VOP-25 ACC-P1 ACC-P2 VACK-P VOACK-P VXO-P1 ISLD1 ISLD2 VBNT VB-NAP B-NAP NTSC mode -1.0 -2.0 4.43361875 (MHz) 5.06 carrier leakage component NTSC mode -5.25 mode, input: burst mVp-p mode, input: burst mVp-p With chrominance level increased With chrominance level decreased -0.8 Input: PAL/GBI standard color signal, Vp-p +1.0 +7.0 -3.7 -1.0 -350 Input: PAL/GBI standard color signal, Vp-p Input: PAL/GBI standard color signal, Vp-p With only chrominance signal level increased With only chrominance signal level decreased -0.5 +0.2 -0.1 +0.6 mVp-p mVp-p Hz/m VSYP PWSYP TSYP VREG With applied T14A SYNC-OUT output pulse wave height SYNC-OUT output pulse width Symbol Conditions Unit
[Playback Mode Chrominance System] Video output burst level output burst level Playback characteristics Playback characteristics Playback killer input level Playback killer chrominance output level Main converter carrier leakage Burst de-emphasis level Playback output level Playback oscillator frequency deviation detector current detector current NTSC playback burst output level NTSC conversion axis burst level NTSC conversion burst level ratio +0.5 -0.5 -5.0 +1.0 +2.0 -4.75 +0.8 mVp-p mVp-p mVp-p mVp-p
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LA7437, 7437A LA7437A Control Table
Control function Edit (AVNS)-CTL ****** C-rotary QV/QH CHARA. EP/LP/SP carrier shift stop NT/MESEC/PAL Trick DOC-off less Through less Balanced-mod output MESEC less C-off less Through less CHARA insert C-CTL more High Pedestal insert more insert more more carrier shift stop more NAP-on more NTSC more more more less YNR-off YNR-CTL more more (strong) more
PB-H Note: allow fall under (The chip will enter test mode.)
Function Control each LA7437A Operating Modes
Edit Variable Center Variable Center Variable Center Center Center control Detail enhancer control control PIC-CTL carrier shift
Variable Center
Variable Center Variable Center Variable Center Variable Center
Note: coefficient, coefficient carrier shift entries parentheses when high. detail enhancer when middle level.
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LA7437, 7437A LA7437 Test Circuit
5473-6/8
LA7437, 7437A LA7437 Block Diagram
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LA7437, 7437A
products described contained herein intended surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment like, failure which directly indirectly cause injury, death property loss. Anyone purchasing products described contained herein above-mentioned shall: Accept full responsibility indemnify defend SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees, jointly severally, against claims litigation damages, cost expenses associated with such use: impose responsibility fault negligence which cited such claim litigation SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees jointly severally. Information (including circuit diagrams circuit parameters) herein example only; guaranteed volume production. SANYO believes information herein accurate reliable, guarantees made implied regarding infringements intellectual property rights other rights third parties. This catalog provides information December, 1997. Specifications information herein subject change without notice. 5473-8/8
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