HD SERIES HDTV FILTERS
ITU 709 (1250/50)
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ITU 709 (1250/50) compliant
pin SIL package
Miniature space saving package
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Aqueously washable versions available
Pre and Post Luminance and Chrominance filters
Integer No of clock delays between Luma and Chroma filters
Type Number
HD7425FPA
HD7425SPA
HD3712FPA
HD3712SPA
Impedance (ohms)
Filter Shape
75
75
75
75
Lowpass
Flat
Lowpass
Sinx/x
Lowpass
Flat
Lowpass
Sinx/x
Passband Shape
Sampling Frequency (S.F) 74.25 MHz
74.25 MHz
< 4.5 dB
29.7 MHz
< ± 0.01 at 100 kHz
37.125 MHz
< 1.5 dB
14.5 MHz
< ± 0.01 at 100 kHz
37.125 MHz
< 4.5dB
Insertion loss at 100 kHz
End of Passband
< 1.5 dB
29.7 MHz
14.5 MHz
< ± 0.01 at 100 kHz
< ± 0.01 at 100 kHz
Amplitude ripple (dB)
(wrt 100 kHz)
< ± 0.12 at 28.2 MHz < ± 0.12 at 28.2 MHz1 < ± 0.12 at 14.1 MHz < ± 0.12 at 14.1 MHz2
< -1.0 at 29.7 MHz
< -1.0 at 29.7 MHz1
50 ns ± 2 ns
< -1.0 at 14.9 MHz
< -1.0 at 14.9 MHz2
90 ns ± 3 ns
50 ns ± 2 ns
90 ns ± 3 ns
Insertion delay at 200 kHz
< ± 0.5 at 200 kHz
< ± 2.0 at 27 MHz
< ± 20 to 30 MHz
< ± 0.5 at 200 kHz
< ± 2.0 at 27 MHz
< ± 20 to 30 MHz
< ± 1.0 at 200 kHz
< ± 4.0 to 13.5 MHz
< ± 40 to 15 MHz
< ± 1.0 at 200 kHz
< ± 4.0 at 13.5 MHz
< ± 40 to 15 MHz
Group delay ripple (ns)
(wrt 200 kHz)
> 6 dB Frequency.
(wrt loss at 100 kHz)
36 MHz
36 MHz 1
18 MHz
18 MHz 2
> 20 dB Frequency
(wrt loss at 100 kHz)
43 MHz
43 MHz
21.5 MHz
21.5 MHz
Start of stopband
45 MHz
> 40 dB
45 MHz
> 40 dB
22.5 MHz
> 40 dB
22.5 MHz
> 40 dB
Stopband attenuation
(wrt loss at end of passband)
Part numbering
HD • • • • •
•
•
Package Drg No
A - DR00005A
D - DR00170A
F - DR00069B
G - DR00172A
Sampling
SF - 7425
Frequency SF - 3712
Passband
Shape
S - Sin/x
F - Flat
Realisation
P - Passive
Example part number HD7425SPA is a passive, luminance sinx/x corrected for a s.f. of 74.25 MHz packaged in a 11 pin SIL
package as DR00005A.
Other sampling frequencies are available on request.
1
Measured against sinx/x roll off for a sampling frequency of 74.25 MHz
2
Measured against sinx/x roll off for a sampling frequency of 37.125 MHz
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice
FARA076d Page 1 of 2 Jan-00(B)