The typical application of LTC5507

Published:2011/7/6 3:11:00 Author:Christina | Keyword: typical application | From:SeekIC

The typical application of LTC5507 is as shown in the figure. C1 is the coupling capacitance of the RF input port, C2 is the peak keeping capacitance, both of C1 and C2 use the ceramic capacitor, the capacitive reactance is lower than 5Ω to reduce the ripple wave of C2. The capacities of C1 and C2 depend on the minimum input frequency fmin of the RF (the unit is MHz), the formula is C1=C21≥(30fmin). In this formula, the units of C1 and C2 are μF. Because the value of C2 will affect the conversion rate and the bandwidth, so C1=C2. The capacities of C1 and C2 can not be too large, or the frequency will exceed the minimum input RF frequency.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/The_typical_application_of_LTC5507.html

Print this Page | Comments | Reading(3)