PACS1284-06 Datasheet, PDF (5/5 Pages) California Micro Devices Corp – P/ACTIVE IEEE 1284 ECP/EPP TERMINATION NETWORK

CALIFORNIA MICRO DEVICES
PACS1284-06
Figure 4 shows typical Insertion Loss graphs for the PACS1284-06 for Data and Strobe signals. The curves are
dependent on the physical location of the filter elements with respect to the ground and V_CC terminals of the device.
These graphs are measured in a 50 Ohm environment. The signal is introduced at the series resistor input and the
output is measured at the corresponding filter capacitor. The graphs labeled A,B, and C are measured between 14
(input) and 16 (output), pin 3 (input) and 26 (output), and pin 6 (input) and 23 (output), respectively. The A graph
depicts “worst case” filter performance, while C represents a “best case” situation. Graphs of all other filter elements
will fall in between these two.
S₁₂ in dB
0
-10
A
-20
B
-30
C
-40
-50
300 450 600 750 900 1050 1200
(FREQUENCY, MHz)
Figure 4. Typical Filter Insertion Loss for PACS1284-06 (S₁₂ in dB, T_A = 25^O C)
Filter insertion loss is measured using Hewlett Packard HP 8753C Analyzer
© 2000 California Micro Devices Corp. All rights reserved.
8/25/2000 215 Topaz Street, Milpitas, California 95035
Tel: [phone]
Fax: [phone]
www.calmicro.com
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