1997 Oct 27
2
Philips Semiconductors
Product specification
Economy Autosync Deflection Controller
(EASDC)
TDA4858
FEATURES
Concept features
Full Horizontal (H) plus Vertical (V) autosync capability
Completely DC controllable for analog and digital
concepts
Excellent geometry control functions [e.g. automatic
correction of East-West (EW) parabola during
adjustment of vertical size and vertical shift]
Flexible Switched Mode Power Supply (SMPS) function
block for feedback and feed forward converters
X-ray protection
Start-up and switch-off sequence for safe operation of
all power components
Very good vertical linearity
Internal supply voltage stabilization
SDIP32 package.
Synchronization inputs
Can handle all sync signals (horizontal, vertical,
composite and sync-on-video)
Combined output for video clamping, vertical blanking
and protection blanking
Start of video clamping pulses externally selectable.
Horizontal section
Extremely low jitter
Frequency locked loop for smooth catching of line
frequency
Simple frequency preset of f
min
and f
max
by external
resistors
DC controllable wide range linear picture position
Soft start for horizontal driver.
Vertical section
Vertical amplitude independent of frequency
DC controllable picture height, picture position and
S-correction
Differential current outputs for DC coupling to vertical
booster.
EW section
Output for DC adjustable EW parabola
DC controllable picture width and trapezium correction
Optional tracking of EW parabola with line frequency
Prepared for additional DC controls of vertical linearity,
EW-corner, EW pin balance, EW parallelogram, vertical
focus by extended application.
GENERAL DESCRIPTION
The TDA4858 is a high performance and efficient solution
for autosync monitors. The concept is fully DC controllable
and can be used in applications with a microcontroller and
stand-alone in rock bottom solutions.
The TDA4858 provides synchronization processing, H + V
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 TDA486x and TDA8351.
The TDA4858 provides extended functions e.g. as a
flexible SMPS block and an extensive set of geometry
control facilities, providing excellent picture quality.
Together with the Philips TDA488x video processor family
a very advanced system solution is offered.
ORDERING INFORMATION
TYPE
NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
TDA4858
SDIP32
plastic shrink dual in-line package; 32 leads (400 mil)
SOT232-1
1997 Oct 27
3
Philips Semiconductors
Product specification
Economy Autosync Deflection Controller
(EASDC)
TDA4858
QUICK REFERENCE DATA
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
V
CC
supply voltage
9.2
-
16
V
I
CC
supply current
-
49
-
mA
HPOS
horizontal shift adjustment range
-
10.5
-
%
VAMP
vertical size adjustment range
60
-
100
%
VPOS
vertical shift adjustment range
-
11.5
-
%
VSCOR
vertical S-correction adjustment range
2
-
46
%
V
EWPAR
EW parabola adjustment range
0.15
-
3.0
V
V
EWWID
horizontal size adjustment range
0.2
-
4.0
V
V
EWTRP
trapezium correction adjustment range
-
0.5
-
V
T
amb
operating ambient temperature
0
-
70
C
1997 Oct 27
5
Philips Semiconductors
Product specification
Economy Autosync Deflection Controller
(EASDC)
TDA4858
PINNING
SYMBOL PIN
DESCRIPTION
HFLB
1
horizontal flyback input
XRAY
2
X-ray protection input
BOP
3
B+ control OTA output;
comparator input
BSENS
4
B+ control comparator input/output
BIN
5
B+ control OTA input
BDRV
6
B+ control driver output
HDRV
7
horizontal driver output
PGND
8
power ground
V
CC
9
supply voltage
CLSEL
10
selection input for horizontal clamping
trigger
EWDRV
11
EW parabola output
VOUT2
12
vertical output 2 (ascending sawtooth)
VOUT1
13
vertical output 1 (descending
sawtooth)
VSYNC
14
vertical synchronization input/output
(TTL level)
HSYNC
15
horizontal/composite synchronization
input (TTL level or sync-on-video)
CLBL
16
video clamping pulse/vertical blanking
and protection output
VPOS
17
vertical shift input
VAMP
18
vertical size input
VSCOR
19
vertical S-correction input
EWTRP
20
EW trapezium correction input
EWPAR
21
EW parabola amplitude input
VAGC
22
external capacitor for vertical
amplitude control
VREF
23
external resistor for vertical oscillator
VCAP
24
external capacitor for vertical oscillator
SGND
25
signal ground
HPLL1
26
external filter for PLL1
HBUF
27
buffered f/v voltage output
HREF
28
reference current for horizontal
oscillator
HCAP
29
external capacitor for horizontal
oscillator
HPOS
30
horizontal shift input
HPLL2
31
external filter for PLL2/soft start
EWWID
32
horizontal size input
Fig.2 Pin configuration.
handbook, halfpage
TDA4858
MGD095
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
HFLB
XRAY
BOP
BSENS
BIN
BDRV
HDRV
PGND
VCC
CLSEL
EWDRV
VOUT2
VOUT1
VSYNC
HSYNC
CLBL
EWWID
HPLL2
HPOS
HCAP
HREF
HBUF
HPLL1
SGND
VCAP
VREF
VAGC
EWPAR
EWTRP
VSCOR
VAMP
VPOS
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
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