AH843 - Faraday Technology

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
Lowpass
Passband Shape
Sinx/x
Sampling Frequency
12.27 MHz
Gain
- 0.2 dB + 0.2 dB
+5.8 dB + 0.2 dB
End Of Passband
4.4 MHz
Passband Amplitude Ripple
0.25 dB max
Loss at 6.6 MHz wrt 4.4 MHz
30 dB + 2 dB
Start Of Stopband
7.0 MHz
Stopband Attenuation wrt 4.4 MHz
Group Delay Ripple wrt 200 kHz
40 dB min to 20 MHz
35 dB min to 50 MHz
+ 10.0 ns max to 4.3 MHz
Delay Time at 200 kHz
338 ns + 10 ns
Typical Current
50 mA (25 mA per rail at + 5 v)
Input Impedance
10 MΩ typical
Package
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)