BFB SERIES
ANTIALIASING FILTERS
These very small, low cost, filters are intended for use with A-D and D-A composite NTSC video
converters using a sample rate of 4 x sub-carrier frequency. The cut off rate is slower than often
recommended to reduce time domain ringing.
The pre-filters have a flat passband and the post-filters are shaped to provide sinx/x correction.
Filters suitable for different sampling rates or with various losses at the half sampling frequency can
be supplied.
Type Number
Filter Shape
Passband Shape
Sampling Frequency
Insertion Loss at 100 kHz
End Of Passband
Passband Amplitude Ripple
Loss at half S.F.
Start Of Stopband
Stopband Attenuation
Delay Time at 200 kHz
Pulse and bar: K - rating
Impedance
Temperature Range
Aqueous Washable
Package Type
BFB1432F
Lowpass
Flat
14.32 MHz
< 1.5 dB
5.51 MHz
0.1 dB max
12 dB + 2 dB
9.12 MHz
40 dB min
188 ns + 5 ns
1%
75 ohms
0°C to 70°C
Yes
DR00275A
BFB1432S
Lowpass
Sinx/x
14.32 MHz
< 4.5 dB
5.51 MHz
0.1 dB max
12 dB + 2 dB
9.12 MHz
40 dB min
217 ns + 5 ns
1%
75 ohms
0°C to 70°C
Yes
DR00253A
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
FARA175d
Page 1 of 2
Mar-00(A)
FARADAY [ FARADAY TECHNOLOGY ]
