TDA4852 Ver la hoja de datos (PDF) - Philips Electronics
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TDA4852 Datasheet PDF : 16 Pages
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Philips Semiconductors
Horizontal and vertical deflection controller
for autosync monitors
Preliminary specification
TDA4852
SYMBOL
PARAMETER
CONDITIONS
Vertical sync input (DC-coupled, TTL-compatible) V-sync on pin 10
Vi sync
I10
tp V
sync input signal
(peak-to-peak value, pin 10)
slicing level
input current
maximum vertical sync pulse width for
automatic vertical polarity switch
Horizontal clamping / blanking generator output
0 < V10 < 5.5 V
Fig.6
V8
output voltage LOW
blanking output voltage
clamping output voltage
I8
internal sink current for all output levels
external load current
t8
clamping pulse start
tclp
clamping pulse width
S
steepness of rise and fall times
Vertical oscillator
internal V blanking
H-sync on pin 9
H and V scanning
V8 = 3 V
Vref = 6.25 V
f0
vertical free-running frequency
fv
nominal vertical sync range
V15
voltage on pin 15
td
delay between sync pulse and start of
vertical scan
I12
control current for amplitude control
C12
capacitor for amplitude control
Vertical differential output
R15 = 22 kΩ;
C16 = 0.1 µF
no f0 adjustment
R15 = 22 kΩ
measured on pin 8
Fig.7
Io
differential output current between
mode 3; I13 >−135 µA;
pins 5 and 6 (peak-to-peak value)
R15 = 22 kΩ
maximum offset-current error
Io = 1 mA
maximum linearity error
Vertical amplitude adjustment (in percentage of output signal)
V13
input voltage
I13
adjustment current
Io max (100%)
Io min (typically 58%)
Horizontal comparator PLL1
V17
upper control voltage limitation
lower control voltage limitation
I17
control current
Fig.6
MIN. TYP. MAX. UNIT
1.7 −
1.2 1.4
−
−
−
−
−
V
1.6 V
±10 µA
300 µs
−
−
0.9
1.6 1.9
2.2
5.15 5.4
5.65
2.3 2.9
3.5
−
−
−3.0
with end of H-sync
0.6 0.8
1.0
−
60
75
V
V
V
mA
mA
µs
ns/V
−
42
50
−
2.8 3.0
240 300
−
±200
−
−
−
Hz
110 Hz
3.2 V
360 µs
−
µA
0.18 µF
0.9 1.0
−
−
−
−
1.1 mA
±2.5 %
±1.5 %
−
−110
−
5.0
−120
0
−
V
−135 µA
−
µA
−
5.9
−
V
−
5.1
−
V
−
±0.083I18 −
mA
December 1992
8
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