TDA4852 Просмотр технического описания (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
CHARACTERISTICS
VP = 12 V; Tamb =+25 °C; measurements taken in Fig.3 unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP.
VP
positive supply voltage (pin 1)
IP
supply current
Internal reference voltage
I18 = −1.05 mA
I18 = −3.388 mA
9.2 12
−
36
−
40
Vref
TC
PSRR
internal reference voltage
temperature coefficient
power supply ripple rejection
VP
supply voltage (pin 1) to ensure all
internal reference voltages
Composite sync input (AC-coupled)
6.0
Tamb = +20 to +100 °C −
f = 1 kHz sinewave
60
f = 1 MHz sinewave 25
9.2
V10 = 5 V
6.25
−
75
35
−
vi sync
sync amplitude of video input signal
(pin 9)
sync on green
top sync clamping level
slicing level above top sync level
RS
allowed source resistance for 7%
duty factor
RS = 50 Ω
Vi sync > 200 mV
r9
differential input resistance
during sync
I9
charging current of coupling capacitor
V9 > 1.5 V
tint
vertical sync integration time to
generate vertical trigger pulse
fH = 31 kHz;
I18 = −1.050 mA
fH = 64 kHz;
I18 = −2.169 mA
fH = 100 kHz;
I18 = −3.388 mA
Horizontal sync input (DC-coupled, TTL-compatible)
−
300
1.1 1.28
90
120
−
−
−
80
1.3 2
7
10
3.5 5
2.5 3.4
Vi sync
tp
tr, tf
I9
sync input signal
(peak-to-peak value, pin 9)
slicing level
minimum pulse width
rise time and fall time
input current
Automatic horizontal polarity switch
V9 = 0.8 V
V9 = 5.5 V
H-sync on pin 9
1.7 −
1.2 1.4
700 −
10
−
−
−
−
−
tp H/tH
tp
horizontal sync pulse width related to tH
(duty factor for automatic polarity
correction)
delay time for changing sync polarity
−
−
0.3 −
MAX. UNIT
16
V
44
mA
49
mA
6.5 V
±90 10−6/K
−
dB
−
dB
16
V
−
mV
1.5 V
150 mV
1.5 kΩ
−
Ω
3
µA
13
µs
6.5 µs
4.5 µs
−
V
1.6 V
−
ns
500 ns
−200 µA
10
µA
30
%
1.8 ms
December 1992
7
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