TDA8708A Datasheet, PDF (17/24 Pages) NXP Semiconductors – Video analog input interface

Philips Semiconductors
Video analog input interface
Product specification
TDA8708A
dbook, full pagewidth
22 µH
22 µH
ANOUT
(pin 19)
Vi
680 Ω
12 pF
27 pF
12 pF
68 pF
VCCA
(pin 22)
2.2 kΩ
27 pF
MBB966 - 1
ADCIN
(pin 20)
Vo
This filter can be adapted to various applications with respect to performance requirements. An input and output impedance of at least 680 Ω and 2.2 kΩ
must in any event be applied.
Fig.13 Example of a low-pass filter for CVBS and Y signals.
0
handbook, halfpage
α
(dB)
40
MSA682
Characteristics of Fig. 13
• Order 5; adapted CHEBYSHEV
• Ripple ρ ≤ 0.4 dB
• f = 6.5 MHz at −3 dB
• f_notch = 9.75 MHz.
80
120
160
0
10
20 _{f (MHz)} 30
Fig.14 Frequency response for filter shown in
Fig.13.
June 1994
17