© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
FARA036.DOC Page 1 of 2 Jun-99(A)
• Zero Insertion loss • Fully compliant to SMPTE 260M
• Low output impedance via op-amp driver stage • pin DIP package
• Integer multiple clock delay between luminance and chrominance filters
Meeting all the pre and post filtering characteristics of SMPTE 260M this range of HDTV antialiasing filters include
a video buffer to give 0dB insertion loss. This more complete and accurate solution removes some of the ambiguity of
optimising buffers and filters separately particularly illustrated at the high bandwidths required for HDTV
applications.
1 Includes Sinx/x correction for a Sampling Frequency of 74.25 MHz.
2 Includes Sinx/x correction for a Sampling Frequency of 37.125 MHz.
Part number AH1175 AH1176
Filter type Luminance Pre Luminance Post
Input Impedance 75 ohms 75 ohms
Insertion loss at 100 kHz 0 dB ± 0.05 dB 0 dB ± 0.05 dB
End of passband 30 MHz 30 MHz
Passband amplitude ripple < 0.1 dB < 0.1 dB 1
Group delay ripple < 2 ns to 20 MHz < 2 ns to 20 MHz
< 3 ns to 30 MHz < 3 ns to 30 MHz
Delay time at 200 kHz 112 ns ± 2 ns 112 ns ± 2 ns
Attenuation at 37.125 MHz wrt 100 kHz 1> 12 dB > 12 dB
Attenuation at 44.25 MHz wrt 100 kHz > 40 dB > 40 dB
Start of stopband 54.25 MHz 54.25 MHz
Stopband attenuation wrt 100 kHz > 50 dB to 150 MHz > 50 dB to 150 MHz
Supply voltage ± 5 volts ± 5 volts
Typical current 5 mA per rail 5 mA per rail
Package DR00161A DR00161A
Part number AH1177 AH1178
Filter type Chrominance Pre Chrominance Post
Input impedance 75 ohms 75 ohms
Insertion loss at 100 kHz 0 dB ± 0.05 dB 0 dB ± 0.05 dB
End of passband 15 MHz 15 MHz
Passband amplitude ripple < 0.1 dB < 0.1 dB 2
Group delay ripple < 2 ns to 10 MHz < 2 ns to 10 MHz
< 3 ns to 15 MHz < 3 ns to 15 MHz
Delay time at 200 kHz 220 ns ± 3 ns 215 ns ± 3 ns
Attenuation at 18.5625 MHz wrt 100 kHz 2> 12 dB > 12 dB
Attenuation at 22.125 MHz wrt 100 kHz > 40 dB > 40 dB
Start of stopband 27.125 MHz 27.125 MHz
Stopband attenuation wrt 100 kHz > 50 dB to 100 MHz > 50 dB to 100 MHz
Supply voltage ± 5 volts ± 5 volts
Typical current 5 mA per rail 5 mA per rail
Package DR00161A DR00161A
HDTV FILTERS
ZERO LOSS
PACKAGE DETAIL
Faraday Technology Ltd. Tel: + 44 (0)1782 661501
Croft Road Industrial Estate, Fax: + 44 (0)1782 630101
Newcastle, Staffordshire Email: sales@faradaytech.co.uk
ST5 0QZ. England. Web site: http://www.faradaytech.co.uk
FARA036.DOC Page 2 of 2 Jun-99(A)
