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Número de pieza | HA11560T | |
Descripción | VCR/VDP RF Modulator | |
Fabricantes | Hitachi Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de HA11560T (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
No Preview Available ! ADE-207-126A (Z)
HA11560FP/T
VCR/VDP RF Modulator
Rev. 1
Dec. 1993
This chip is designed for application as an RF
modulator in VCRs and VDPs. A new type RF
oscillator provides superior harmonic
characteristics.
Functions
• Video modulator
• RF carrier oscillator
• White clip
• Channel switch
• Audio carrier converter
• ANT switch driver
• Carrier off switch
Features
• Superior harmonic characteristics allow easy
pattern design.
• Sharp white chip characteristics with no
distortion
• The use of miniature surface mount packaging
allows substrate miniaturization (TSOP).
Ordering Information
Type No.
HA11560FP
HA11560T
Package
16 pin plastic SOP
16pin plastic TSOP
1 page HA11560FP/T
Block Operation Descriptions
The following describes the operation of each
block and external circuits.
Video Clamp
The video clamp circuit employs a sync peak value
clamp. Input impedance is at a level of
approximately 30 kΩ to reduce compression of the
sync pulse. Note that sag is generated in the sync
pulse when a capacitor of 0.47 µF or lower is used
for C10 at pin 16.
White Clip Circuit
The white clip level is set to 92.5%. A circuit that
produces a sharp white clip is used in order to
produce high linearity characteristics for the video.
Increasing the white clip frequency characteristic
by another 5 MHz eliminates video carrier cutoff
by the chroma signal and prevents deterioration of
audio buzz characteristics.
Video in
+ 16
C10
1 µF
White clip
circuit
White clip level
HA11560
white clip
characteristics
Normal
white clip
characteristics
Figure 1 Video Input Circuit
Figure 2 White Clip Characteristics
5
5 Page |
Páginas | Total 10 Páginas | |
PDF Descargar | [ Datasheet HA11560T.PDF ] |
Número de pieza | Descripción | Fabricantes |
HA11560FP | VCR/VDP RF Modulator | Hitachi Semiconductor |
HA11560T | VCR/VDP RF Modulator | Hitachi Semiconductor |
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