AH843
FULLY BUFFERED SQUARE PIXEL NTSC POST FILTER
The AH843 has been designed for NTSC post D/A applications with accurate sinx/x correction for
the 12.27 MHz square pixel rate. Interfacing to the system is simplified with high input and low
output impedance op-amp buffer stages.
Filter Shape
Passband Shape
Sampling Frequency
Gain
End Of Passband
Passband Amplitude Ripple
Loss at 6.6 MHz wrt 4.4 MHz
Start Of Stopband
Stopband Attenuation wrt 4.4 MHz
Group Delay Ripple wrt 200 kHz
Delay Time at 200 kHz
Typical Current
Input Impedance
Package
Lowpass
Sinx/x
12.27 MHz
- 0.2 dB + 0.2 dB
+5.8 dB + 0.2 dB
4.4 MHz
0.25 dB max
30 dB + 2 dB
7.0 MHz
40 dB min to 20 MHz
35 dB min to 50 MHz
+ 10.0 ns max to 4.3 MHz
338 ns + 10 ns
50 mA (25 mA per rail at + 5 v)
10 MΩ typical
DR00032A
with pin 6 open
with pin 6 gnd
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
FARA022.DOC
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Jun-99(A)
PACKAGE DETAIL
Faraday Technology Ltd.
Croft Road Industrial Estate,
Newcastle, Staffordshire
ST5 0QZ. England.
FARA022.DOC
Tel:
Fax:
Email:
Web site:
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+ 44 (0)1782 661501
+ 44 (0)1782 630101
sales@faradaytech.co.uk
http://www.faradaytech.co.uk
Jun-99(A)