Ordering number: EN2781B
Monolithic Linear IC
LA7852
CRT Display Synchronization Deflection Circuit
Overview
The LA7852 is a sync-deflection circuit IC dedicated to CRT
display use. It can be connected to the LA7832/7833, 7837/
7838 (for vertical output use) to form a sync-deflection circuit
that meets every requirement for CRT display use.
So far, ICs for color TV use have been applied to the sync-
deflection circuit for CRT display use, and general-purpose ICs
such as one-shot multivibrator, inverter and a lot of transistors
have been used to form the peripherals such as sync input
interface, horizontal phase shifter. The LA7852 contains these
peripherals on chip and adopts a stable circuit for horizontal
oscillation from 15 kHz to 100 kHz aiming at improving the
characteristics required for CRT display use.
The LA7852 has independent GND pins for the horizontal
block and vertical block, thus facilitating pattern layout for
applications where the LA7852 is used at high frequencies.
Package Dimensions
unit : mm
3059-DIP22S
[LA7852]
SANYO : DIP22S
Features
Allowable power dissipation, Pd max 鈥?mW
.
The vertical pull-in range is approximately 10 Hz at
60 Hz.
.
fv = horizontal oscillation frequency can be adjusted stably
The
15 kHz 100 kHz.
.
fromhorizontaltodisplay can be shifted right/left.
.
The horizontal/vertical sync input can be used intact
The
of the difference pulse polarity and pulse
.
regardlessfeedback sawtoothinwave can be obtained by width.
The AFC
a flyback
as
.
simply applying horizontalpulse to thebeICset. a trigger pulse.
pulse can
.
Any duty of the because DC bias at vertical output
Good vertical linearity
sampling
within retrace time.
.
stage is subjected toand verticalcontrolcharacteristics on the
Excellent interlace
jitter
high-definition display because of independent GND pins for
the horizontal block and vertical block.
Pd max 鈥?Ta
Ambient temperature, Ta 鈥?擄C
Built-in Functions
[Horizontal Block]
[Vertical Block]
.
AFC
.
Horizontal OSC
.
X-ray protector
.
Horizontal phase shift
.
AFC sawtooth wave generator
.
Horizontal pulse duty setting
.
Vertical OSC
.
Vertical sawtooth wave generator
.
Sampling type DC voltage control
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
81096HA(II)/9138YT/8228YT,TS No.2781-1/5
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