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TDA4851 Datasheet(PDF) 2 Page - NXP Semiconductors

Part No. TDA4851
Description  Horizontal and vertical deflection controller for VGA/XGA and autosync monitors
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Maker  PHILIPS [NXP Semiconductors]
Homepage  http://www.nxp.com
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 2 page
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November 1992
2
Philips Semiconductors
Preliminary specification
Horizontal and vertical deflection controller for
VGA/XGA and autosync monitors
TDA4851
FEATURES
• VGA operation fully implemented including
alignment-free vertical and E/W amplitude presettings
• 4th VGA mode easy applicable (XGA, Super VGA)
• Autosync operation externally selectable
• Low jitter
• All adjustments DC-controllable
• Alignment-free oscillators
• Sync separators for video or horizontal and vertical TTL
sync levels regardless of polarity
• Horizontal oscillator with PLL1 for sync and PLL2 for
flyback
• Constant vertical and E/W amplitude in autosync
operation
• DC-coupling to vertical power amplifier
• Internal supply voltage stabilization with excellent ripple
rejection to ensure stable geometrical adjustments
GENERAL DESCRIPTION
The TDA4851 is a monolithic integrated circuit for
economical solutions in VGA/XGA and autosync monitors.
The IC incorporates the complete horizontal and vertical
small signal processing.
VGA-dependent mode detection and settings are
performed on chip. In conjunction with TDA4860/61/65,
or TDA8351 (vertical output circuits) the ICs offer an
extremely advanced system solution.
QUICK REFERENCE DATA
ORDERING INFORMATION
Note
1. SOT146-1; 1996 November 26.
SYMBOL
PARAMETER
MIN. TYP.
MAX.
UNIT
VP
positive supply voltage (pin 1)
9.2
12
16
V
IP
supply current
40
mA
Vi sync
AC-coupled composite video signal with negative-going sync
(peak-to-peak value, pin 9)
1
V
sync slicing level
120
mV
DC-coupled TTL-compatible horizontal sync signal (peak-to-peak value,
pin 9)
1.7
−−
V
slicing level
1.2
1.4
1.6
V
DC-coupled TTL-compatible vertical sync signal (peak-to-peak value,
pin 10)
1.7
−−
V
slicing level
1.2
1.4
1.6
V
Io V
vertical differential output current (peak-to-peak value, pins 5 and 6)
1
mA
Io H
horizontal sink output current on pin 3
−−
60
mA
Tamb
operating ambient temperature range
0
−+70
°C
EXTENDED TYPE
NUMBER
PACKAGE
PINS
PIN POSITION
MATERIAL
CODE
TDA4851
20
DIL
plastic
SOT146(1)




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