6、When a radio is tuned to 98.1 MHz & with a LO of 108.8 MHz, what is the ima
ge frequency?
7、For a system with a matched impedance, what is the Reflection Coefficient a
nd SWR?
8、Which property of the output capacitor is the primary cause of Low Drop Out
(LDO) regulator loop instability?
a) Equivalent series resistance(ESR)
b) Effective series inductance(ESL)
c) Capacitance value
d) Dielectric material
9、The switching regulator is capable of:
a) Higher power conversion efficiency
b) Providing an output voltage that is higher than the input
c) Generating an output boltage oppsite in polarity to the input zd.54yjs.cn
d) All of the above
10、A linear regulator op*(没抄清楚)
Vin(max)=10v,Vout(min)=4.8v,Iout(max)=2.5mA,Iq(max)=2.5mA,Ta(max)=8.5摄氏度， zd.54yjs.cn
The regulator is available in 3 packages.Each package has the following ther
mal characteristics:
Package Rja(摄食度/W) Rjc(摄食度/W)
TO220 50 35
SO14 125 30
www.54yjs.cn
D1P8 100 52
Choose the most suitable package to handle the power dissipation requireme
nt without a heat sink and why.
