SANYO LA7680, LA7681 Datasheet

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.
Monolithic Linear IC
Sigle-Chip Signal Processor
for Color TV Use
Ordering number:ENN3343A
LA7680, 7681
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
Overview
The LA7680 and LA7681 signal processors provide all the components required to decode PAL or NTSC Color tele­vision signals. On-chip circuits include VIF, SIF, a video processor, a chroma demodulator, and deflection drivers. The self-adjusting signal processors support vertical field scanning rates of both 50 and 60Hz, allowing the LA7837 and LA7838 vertical output drivers to maintain a constant picture height. The LA7681 replaces the LA7680’s G-Y output at pin 22 with a color contrast signal for input to a SECAM chroma demodulator. This contrast signal is f ix ed at the maxim um.
The LA7680/7681 is available in 48-pin shrink DIPs.
Features
• Minimized external components.
• 48-pin shrink DIP. VIF/SIF
• High-gain VIF amplifier.
• Fast-response automatic gain control (AGC).
• No delay between audio input and output.
• Muting for both audio and video signals or for audio alone.
Video processor
• On-chip two-dimensional differential circuit.
• Variable current transfer.
• 7MHz bandwidth.
Chroma demodulator
• PAL and NTSC system compatible.
• Optimized demodulation angles and ratios.
• High performance burst cleaning filter and ACC/killer detector.
• On-chip tint circuit (NTSC only).
Deflection drivers
• Adjustment-free vertical or horizontal sync hronization.
• Two-stage automatic frequency control.
• Adjustable separation sensiti vity for v ertical synchroni­zation.
• Fixed picture height for both PAL and NTSC.
• Fixed picture height.
Package Dimensions
unit:mm
3149-DIP48S
[LA7680, 7681]
48
2.53
1
1.78
0.48
46.0
1.05
25
13.8
15.24
24
4.25
5.1max
3.8
0.51min
SANYO : DIP48S
0.25
30801TN (KT)/32593TS/6290TA KI 8-6402, 6403 No.3343–1/10
LA7680, 7681
Specifications
Maximum Ratings at Ta = 25˚C
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tnerructupniPBF
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erutarepmetgnitarepOrpoT 56+ot01–
erutarepmetegarotSgtsT 051+ot55–
Recommended Operating Conditions at Ta = 25˚C
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52
I62xam 5Am I42xam 01Am
V V
V31po 01ot8V V11po 01ot8V
Ta≤65˚C
nim 5–V
62
31 11
52
po 61ot01Am
52
˚C ˚C
9V 9V 31Am
Operating Characteristics at Ta = 25˚C, VCC=V13=V11=9V, ICC=I25=13mA
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FM : f=30kHz
AM : 30%
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No.3343–2/10
Continued from preceding page.
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tniopreggirtrelliKpnokE53–13–72–Bd
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