Monolithic Linear LA7642N SECAM Format Color Chrominance Cir

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Monolithic Linear LA7642N SECAM Format Color Chrominance Cir

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Ordering number EN5693
Monolithic Linear
LA7642N
SECAM Format Color Chrominance Circuit
Overview
LA7642N integrates chrominance circuit SECAM format single 16-pin (300 mil) package provides adjustment-free discriminator circuit. combination with Sanyo LA7687, LA7688, this implement multi-format color signalprocessing system.
Package Dimensions
unit: 3006B-DIP16
[LA7642N]
Features
Adjustment-free discriminator circuit On-chip bell filter
SANYO: DIP16
Specifications
Maximum Ratings 25°C
Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol Topr Tstg 65°C Conditions Ratings +125 Unit
Operating Conditions 25°C
Parameter Recommended operating voltage Operating voltage range Symbol Conditions Ratings Unit
Operating Characteristics 25°C, with pulled through 20-k resistor
Parameter [Circuit Voltage Current] Circuit current [Filter Block] Input impedance input impedance. reference only (design value) Chrominance system. Measure current flowing into With signal applied Symbol Conditions Ratings Unit
Continued next page.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, Chome, Ueno, Taito-ku, TOKYO, JAPAN
73097HA(OT) 5693-1/6
LA7642N
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Parameter Symbol Conditions Ratings Unit
Bell filter frequency characteristics 4.086
Referenced 4.286 MHz. reference only. off. Input p-p, 4.286 signal and, measure output BEL4.086 4.286 MHz). Next, input p-p, 4.086 measure output 4.086 MHz) calculate frequency characteristics. Referenced 4.286 MHz. reference only. off. Input p-p, 4.286 signal and, measure output BEL4.486 4.286 MHz). Next, input p-p, 4.486 measure output 4.486 MHz) calculate frequency characteristics. Referenced 4.286 MHz. reference only. Input p-p, 4.286 signal and, measure output EQU4.086 4.286 MHz). Next, input p-p, 4.086 measure output 4.086 MHz) calculate frequency characteristics. Referenced 4.286 MHz. reference only. Input p-p, 4.286 signal measure output EQU4.486 4.286 MHz). Next, input p-p, 4.486 measure output 4.486 MHz) calculate frequency characteristics. Referenced 4.35 MHz. reference only. off. Input signal modify frequency that signal. Measure deviation from 4.35 frequency (the center frequency) which output maximized. Referenced 4.35 MHz. reference only. off. Measure gain BELF0 ±500 kHz, calculate difference.
Bell filter frequency characteristics 4.486
-0.5
frequency characteristics 4.086
-10.5
-7.5
-4.5
frequency characteristics 4.486
Bell filter frequency deviation from center frequency
BELF0
Bell filter gain difference ±500
BELdG
[Chrominance Block] p-p. Input color signal gradually lower input signal level. Measure input level point voltage falls below 1/2* VCC. amplitude color signal. p-p. Input color signal measure amplitude amplitude color signal. p-p. Input color signal measure amplitude VRY/VBY. Calculate ratio values measured above. RATRB VRY/VBY Input color signal (B-Y) output waveform measure amplitude blue (+230 kHz) yellow (-230 kHz) components measure amplitude blue green (+78 kHz) (-78 kHz) components (B). Calculate value LINBY from following formula. LINBY (A/B) (156/460)
Killer operating point
KILL
output amplitude
0.60
0.75
0.90
Vp-p
output amplitude
0.74
0.92
1.10
Vp-p
R-Y/B-Y output ratio
RATRB
1.23
1.35
linearity
LINBY
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LA7642N
Continued from preceding page.
Parameter Symbol Conditions Input color signal (R-Y) output waveform measure amplitude blue green (+280 kHz) (-280 kHz) components measure amplitude blue (+45 kHz) yellow (-45 kHz) components (B). Calculate value LINRY from following formula. LINRY (A/B) (90/560) Measure peak value pulse signal. Referenced blanking period level. blanking period level. blanking period level. output impedance. reference only. Input color signal measure amplitude p-p). Next, connect resistor between ground measure amplitude Vwrb p-p). Derive ZBYS from following formula. ZBYS Vwrb)/Vwrb output impedance. reference only. Input color signal measure amplitude p-p). Next, connect resistor between ground measure amplitude Vwrr p-p). Derive ZRYS from following formula. ZRYS Vwrr)/Vwrr output impedance. reference only. Apply signal (B-Y), measure influx current derive from following formula. 4/Ib output impedance. reference only. Apply signal (R-Y), measure influx current derive from following formula. 4/Ir difference between signal period level signal period level black-and-white signal. Measure calculate BBBY from following formula. BBBY 460/VBY difference between signal period level signal period level black-and-white signal. Measure calculate BBRY from following formula. BBRY 460/VRY Input signal which 63-kHz modulation been applied measure amplitude Vbon p-p) when preemphasis Next, turn preemphasis, measure amplitude Vboff p-p), calculate DE63B from following formula. DE63B (Vboff/Vbon) (dB) Ratings Unit
linearity
LINRY
pulse height Blanking period voltage Blanking period voltage
VALC VALC VRYBLK
mVp-p
SECAM output impedance:
ZBYS
SECAM output impedance:
ZRYS
Output impedance Non-SECAM:
Output impedance Non-SECAM:
Black level error
BBBY
Black level error
BBRY
[De-Emphasis Characteristics]
De-emphasis
DE63B
-1.0
-2.6
-4.0
Continued next page.
5693-3/6
LA7642N
Continued from preceding page.
Parameter Symbol Conditions Input signal which 63-kHz modulation been applied measure amplitude Vron p-p) when preemphasis Next, turn preemphasis, measure amplitude Vroff p-p), calculate DE63R from following formula. DE63R (Vroff/Vron) (dB) Input signal which 250-kHz modulation been applied measure amplitude Vbon p-p) when preemphasis Next, turn preemphasis, measure amplitude Vboff p-p), calculate DE250B from following formula. DE250B (Vboff/Vbon) (dB) Input signal which 250-kHz modulation been applied measure amplitude Vron p-p) when preemphasis Next, turn preemphasis, measure amplitude Vroff p-p), calculate DE250R from following formula. DE250R (Vroff/Vron) (dB) Apply least pulses with amplitude then take following measurement. Apply voltage slowly increase this voltage starting Measure voltage applied point voltage exceeds Apply least pulses with amplitude then take following measurement. Apply pulse signal with 12-µs high period 52-µs period (for 64-µs cycle) slowly increase amplitude that signal starting Measure wave height that pulse signal point (B-Y) voltage exceeds VBYBLK Apply least pulses with amplitude then take following measurement. Apply pulse signal with 12-µs high period 52-µs period (for 64-µs cycle) slowly increase amplitude that signal starting Measure wave height that pulse signal point (IDF) voltage becomes higher than point pulse signal wave height Ratings Unit
De-emphasis
DE63R
-1.0
-2.6
-4.0
De-emphasis 250k
DE250B
-4.5
-7.0
-9.5
De-emphasis 250k
DE250R
-6.5
-9.0
-11.5
[Sandcastle Pulse]
threshold voltage
VBLK
threshold voltage
HBLK
threshold voltage
[System Switching] SECAM threshold voltage Slowly increase voltage from SESWLO measure that voltage point mode switches non-SECAM mode. SESWHI Slowly increase voltage from measure that voltage point mode switches SECAM mode.
SECAM threshold voltage [Killer Output: Killer output level Killer output level [Reference Frequency Input Block] 4.00-MHz input level variations
VKILON VKILOF
Measure voltage when killer circuit Measure voltage when killer circuit off.
V5DS4
Measure variation voltage when 4.00-MHz input level changed from p-p.
5693-4/6
LA7642N
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Parameter Symbol Conditions Measure variation voltage when 4.00-MHz input level changed from p-p. Measure variation voltage when 4.43-MHz input level changed from p-p. Measure variation voltage when 4.43-MHz input level changed from p-p. input impedance. reference only (design value) input impedance. reference only (design value) Ratings Unit
4.00-MHz input level variations
V5DB4
4.43-MHz input level variations
V3DS44
4.43-MHz input level variations
V3DB44
4.00-MHz input impedance 4.43-MHz input impedance [VCC Dependency]
pulse wave height
dVALC
percentage change pulse peak value when changes Measure pulse peak value when record this value VALC9. Calculate dVALC from following formula. (VALC9 VALC)/1.2/VALC
Notes: off: Pull ground through 4.7-k resistor. Leave open.
Block Diagram
5693-5/6
LA7642N
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 July, 1997. Specifications information herein subject change without notice. 5693-6/6

Monolithic Linear LA7642N SECAM Format Color Chrominance Cir

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