TDA4850 View Datasheet(PDF) - Philips Electronics
Part Name
Description
View to exact match
TDA4850
Philips Electronics
TDA4850 Datasheet PDF : 20 Pages
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Philips Semiconductors
Horizontal and vertical deflection controller
for VGA/XGA and multi-frequency monitors
Product specification
TDA4850
CHARACTERISTICS
VP = 12 V; Tamb = 25 °C; measurements taken in Fig.6; unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supply
VP
supply voltage (pin 1)
9.2
IP
supply current
−
Internal reference voltage
Vref
TC
PSRR
internal reference voltage
temperature coefficient
power supply ripple rejection
6.0
Tamb = 20 to 100 °C
−
f = 1 kHz sine wave
60
f = 1 MHz sine wave 25
VP
supply voltage (pin 1) to ensure all internal
9.2
reference voltages
12
16
V
40
−
mA
6.25 6.5
−
±90
75
−
35
−
−
16
V
10−6/K
dB
dB
V
Composite sync input (AC-coupled; V10 = 5 V)
Vi sync
sync amplitude of video input signal (pin 9)
top sync clamping level
sync on green;
RS = 50 Ω
slicing level above top sync level
RS
allowed source resistance for 7% duty cycle 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
sync pulse
−
300 −
mV
1.1 1.32 1.5 V
90
120 150 mV
−
−
1.5
kΩ
−
80
−
Ω
1.7
2.6
3.4
µA
7
10
13
µs
Horizontal sync input (DC-coupled, TTL-compatible)
Vi sync
sync input signal (peak value; pin 9)
slicing level
tp
minimum pulse width
tr, tf
rise time and fall time
I9
input current
V9 = 0.8 V
V9 = 5.5 V
Automatic horizontal polarity switch (H-sync on pin 9)
tp H/tH
horizontal sync pulse width related to tH
(duty cycle for automatic polarity correction)
tp
delay time for changing sync polarity
Vertical sync input (DC-coupled, TTL-compatible; V-sync on pin 10)
Vi sync
sync input signal (peak value; pin 10)
slicing level
I10
input current
0 < V10 < 5.5 V
tp V
maximum vertical sync pulse width for
automatic vertical polarity switch
1.7
−
1.2 1.4
700 −
10
−
−
−
−
−
−
V
1.6 V
−
ns
500 ns
−200 µA
10
µA
−
−
0.3
−
30
%
1.8 ms
1.7
−
−
V
1.2 1.4 1.6 V
−
−
±10 µA
−
−
300 µs
1997 Jun 05
8
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