Faraday OCCFA Video oversampling smd filter Datasheet

VIDEO OVERSAMPLING SMD
FILTERS
OC SERIES
The OC series range of video oversampling SMD analogue filters has been designed for use in conjunction
with a half band interpolating/decimating filter such as the TRW2242 or with the many encoder chips
available which employ digital filtering and an output D to A converter. This type of digital filtering has good
attenuation between the frequencies of Fs/4 and 3Fs/4 where Fs is the Master Clock rate. When the normal
clock rate of 27 MHz is used for the luminance channel the signal can be expected to have insignificant
energy between 6.75 MHz and 20.25 MHz.
• Surface mount compatible
• Flat or Sinx/x versions
• Small size, low cost
• Luminance and Chrominance versions
With reduced analogue filter costs resulting from oversampling techniques, there is an increased need for
manufacturing facilities to avoid the large production costs associated with the presently available throughhole packages. The Faraday OC range of oversampling filters can be used in surface mount assembly lines
allowing vacuum pick up and reflow.
In order to preserve the integrity of the signal these filters have a good amplitude and group delay
characteristics in the passband which meet requirements of CCIR601 but due to the above considerations do
not have significant attenuation below 21 MHz.
Order code
OCYSA
OCYFA
OCCSA
OCCFA
Impedance
Sinx/x correction
150 Ω
Yes
150 Ω
No
150 Ω
Yes
150 Ω
No
Sampling Freq.
27.0 MHz
27.0 MHz
13.5 MHz
13.5 MHz
End of Passband
5.75 MHz
5.75 MHz
2.75 MHz
2.75 MHz
Amp. ripple (dB)
< 0.05 to 5.5 MHz
< 0.05 to 5.5 MHz
< 0.1 to 5.75 MHz
< 0.1 to 5.75 MHz
< 0.1 to 2.75 MHz
< 0.1 to 2.75 MHz
G.D. ripple
< 6 ns
< 6 ns
< 12 ns
< 12 ns
Start of stopband
21.5 MHz
21.5 MHz
10.75 MHz
10.75 MHz
Stopband atten. wrt 100
kHz
Delay time nom. at 200 kHz
> 40 dB
>40 dB
> 40 dB
> 40 dB
55 ns
58 ns
110 ns
116 ns
Aqueous Washable
Yes
Yes
Yes
Yes
SMD Reflow Limitations
refer to Data Sheet Fara309
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change
without notice
FARA095d
Page 1 of 2
Sep-05(C)
PACKAGE DETAIL
Package
Faraday Technology Ltd.
Croft Road Industrial Estate,
Newcastle, Staffordshire
ST5 0QZ. England.
FARA095d
DR00325A
DR00325A
DR00325A
Tel:
Fax:
Email:
Web site:
Page 2 of 2
DR00325A
+ 44 (0)1782 661501
+ 44 (0)1782 630101
[email protected]
http://www.faradaytech.co.uk
Sep-05(C)
PACKAGE DETAIL
All dimensions in millimetres (inches). Gen Tolerance ± 0,05 (0.002) unless otherwise stated.
DO NOT SCALE
© Faraday Technology Ltd Croft Road Newcastle-U-Lyme ST5 0QZ England Tel (044) 01782 661501 Fax 630101
25,6 (1.01)
7 O/ALL
Third Angle
Projection
17,78 (0.7)
0,35
2,54 (0.1) Typ
0,7
12,8 (0.504)
9
9,95 (0.39)
16
0,85 (0.033)
3,91 (0.15)
TOP VIEW
1
8
0,46 (0.018) Typ
Template: DT00291
Change
Note No;
Auth: C Snell
Date: 25/09/01
Faraday Technology Ltd.
Croft Road Industrial Estate,
Newcastle, Staffordshire
ST5 0QZ. England.
FARA095d
Date: 25/09/01
Title:
Drg No:
FILTER ASSY OUTLINE
Tel:
Fax:
Email:
Web site:
Page 2 of 2
DR00325A
+ 44 (0)1782 661501
+ 44 (0)1782 630101
[email protected]
http://www.faradaytech.co.uk
Sep-05(C)
A4DRGBLK.C DR
Notes.
a. Surface Mount terminals;- 0,254 Alloy 42 5-10µ bright Sn90 tin-plating per MIL-T-10727,
meeting solderability requirements of MIL STD 202F Method 208F.
b. Pin assignments;- Pin 1 = Input.
Pin 8 = Output.
Pin 7 = Open circuit. Connected internally.
All remaining pins = Gnd.
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