Philips Semiconductors
Product specification
I2C-bus autosync deflection controller for
PC monitors
TDA4856
GENERAL DESCRIPTION
The TDA4856 provides extended functions e.g. as a
flexible B+ control, an extensive set of geometry control
facilities, and a combined output for horizontal and vertical
focus signals.
The TDA4856 is a high performance and efficient solution
for autosync monitors. All functions are controllable by the
I2C-bus.
Together with the I2C-bus driven Philips TDA488x video
processor family, a very advanced system solution is
offered.
The TDA4856 provides synchronization processing,
horizontal and vertical synchronization with full autosync
capability and very short settling times after mode
changes. External power components are given a great
deal of protection. The IC generates the drive waveforms
for DC-coupled vertical boosters such as the TDA486x
and TDA835x.
QUICK REFERENCE DATA
SYMBOL
VCC
PARAMETER
MIN.
9.2
TYP. MAX. UNIT
supply voltage
supply current
−
16
−
V
ICC
−
70
9
mA
mA
%
%
%
%
%
V
ICC(stb)
VSIZE
VGA
supply current during standby mode
vertical size
−
−
60
−
−
100
−
VGA overscan for vertical size
vertical position
16.8
±11.5
−
VPOS
VLIN
−
−
vertical linearity (S-correction)
vertical linearity balance
−2
−
−46
−
VLINBAL
VHSIZE
VHPIN
±1.25
−
horizontal size
0.13
0.04
0.02
−
3.6
1.42
0.69
−
horizontal pincushion (EW parabola)
horizontal size modulation
horizontal trapezium correction
horizontal corner correction at top of picture
horizontal corner correction at bottom of picture
horizontal position
−
V
VHEHT
VHTRAP
VHCORT
VHCORB
HPOS
HPARAL
HPINBAL
Tamb
−
V
±0.5
−
V
−0.64
−0.64
−
+0.2
+0.2
−
V
−
V
±13
±1.5
±1.5
−
%
%
%
°C
horizontal parallelogram
−
−
EW pin unbalance
−
−
operating ambient temperature
−20
+70
ORDERING INFORMATION
TYPE
PACKAGE
NUMBER
NAME
DESCRIPTION
VERSION
TDA4856
SDIP32
plastic shrink dual in-line package; 32 leads (400 mil)
SOT232-1
1999 Jul 13
3
NXP [ NXP ]
