HC7425SPA - Faraday Technology - Datasheet.Directory

FARA075.DOC Page 1 of 2 Jun-99(A)

• SMPTE 295M compliant • Aqueously washable

• pin SIL package • Pre and Post Luminance and Chrominance filters

• Miniature space saving package • Integer No of clock delays between Luma and Chroma filters

Type Number HC7425FPA HC7425SPA HC3712FPA HC3712SPA

Impedance (ohms) 75 75 75 75

Filter Shape Lowpass Lowpass Lowpass Lowpass

Passband Shape Flat Sinx/x Flat Sinx/x

Sampling Frequency (S.F) 74.25 MHz 74.25 MHz 37.125 MHz 37.125 MHz

Insertion loss at 100 kHz < 1.5 dB < 4.5 dB < 1.5 dB < 4.5 dB

End of Passband 29.7 MHz 29.7 MHz 14.85 MHz 14.85 MHz

Amplitude ripple (dB) < ± 0.01 at 100 kHz < ± 0.01 at 100 kHz < ± 0.01 at 100 kHz < ± 0.01 at 100 kHz

(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 MHz

< 1.0 at 14.9 MHz < 1.0 at 14.9 MHz

Insertion delay at 200 kHz 50 ns ± 2 ns 50 ns ± 2 ns 100 ns ± 3 ns 100 ns ± 3 ns

Group delay ripple (ns) < ± 0.5 at 20.0 MHz < ± 0.5 at 20.0 MHz < ± 1.0 at 14.5 MHz < ± 1.0 at 14.5 MHz

(wrt 100 kHz) < ± 2.0 at 28.2 MHz < ± 2.0 at 28.2 MHz < ± 4.0 to 14.1 MHz < ± 4.0 at 14.1 MHz

< ± 19.5 to 30 MHz < ± 19.5 to 30 MHz < ± 39.0 to 15 MHz < ± 39.0 to 15 MHz

Attenuation at 1/2 S.F. > 6 dB > 6 dB1> 6 dB > 6 dB2

(wrt loss at 100 kHz)

> 20 dB Frequency 44.55 MHz 44.55 MHz 22.27 MHz 22.27 MHz

(wrt loss at 100 kHz)

Start of stopband 46.78 MHz 46.78 MHz 23.76 MHz 23.76 MHz

Stopband attenuation > 40 dB > 40 dB > 40 dB > 40 dB

(wrt loss at end of passband)

Part numbering HC     Package Drg No

A - DR00005A

Sampling SF - 7425 D - DR00170A

Frequency SF - 3712 F - DR00069B

G - DR00172A

Passband S - Sin/x Realisation

Shape F - Flat P - Passive

Example part number HC7425SPA 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

HC SERIES HDTV FILTERS

SMPTE 295M COMPLIANT