AN504 데이터 시트보기 (PDF) - Vishay Semiconductors
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AN504 Datasheet PDF : 12 Pages
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AN504
Vishay Siliconix
R&S
SMX
Mini CCTS ZSC2–1W
R&S
SMX
10 dB ATTEN
25 W
DG884
IN
OUT
HP
4195A
HP4195A Set to Spectrum Measurement
FIGURE 21. Two-Tone Intermodulation Test
FIGURE 22. Third Order Intercept Points
The setup for the third-order intercept measurement is shown
in Figure 21, and a plot of the of results is shown in Figure 22.
The test was for one input to four outputs simultaneously. A
signal spacing of 1 MHz was chosen to reflect the broadband
nature of the crosspoint setup. For two signals at –10 dB, the
third-order products were –60 dB, giving an intercept point of
+30 dBm—a very respectable figure.
References
G.R. Jessop, RSGB VHF UHF Manual, 4th edition.
E.C. Jordan, ed., Reference Data for Engineers, 7th edition.
Summary
The DG884 wideband crosspoint IC extends the
state-of-the-art in monolithic wideband switching technology.
Accompanied by the CLC111 and CLC410 linear ICs, the
DG884 further simplifies the task of designing low-distortion
wide-bandwidth crosspoint systems.
Note: an evaluation PCB, providing a working 8 x 4 wideband
crosspoint with 75-W interface is available from
Vishay Siliconix. Check with your local Vishay Siliconix sales
office for details.
www.vishay.com S FaxBack 408-970-5600
6-12
Fink and Christiansen, eds., Electronic Engineers Handbook,
3rd edition.
Brain D. Mathews, Harris Semiconductor, “Make Accurate
Measurements on Video Systems”, Electronic Design, March
3, 1988.
Comlinear application note OA-08.
Gareth Powell, Vishay Siliconix application notes AN501 and
AN503.
Document Number: 70610
05-Aug-99
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