NJG1557KB2 데이터 시트보기 (PDF) - Japan Radio Corporation
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NJG1557KB2 Datasheet PDF : 10 Pages
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NJG1557KB2
nTYPICAL CHARACTERISTICS (fRF=830~870MHz, fIF=110MHz, Lower LOCAL)
Conversion Gain vs. RF frequnecy
V =V =2.8V,Lower LOCAL,f =110MHz,
MIX LO
IF
P =-25dBm,P =-10dBm
RF
LO
12
11
10
9
8
7
6
5
-40oC
+25oC
4
-20oC
+55oC
3
0oC
+85oC
2
830 835 840 845 850 855 860 865 870
RF frequency(MHz)
NF vs. RF frequnecy
V =V =2.8V,Lower LOCAL,
MIX LO
f =110MHz,P =-10dBm
IF
LO
8
7
6
5
4
3
-40oC
+25oC
2
-20oC
+55oC
0oC
+85oC
1
830 835 840 845 850 855 860 865 870
RF frequency(MHz)
OIP3 vs. RF frequnecy
V =V =2.8V,Lower LOCAL,f =110MHz,
MIX LO
IF
P =-25dBm,P =-10dBm
RF
LO
20
19
18
17
16
15
14
13
-40oC
+25oC
12
-20oC
+55oC
11
0oC
+85oC
10
830 835 840 845 850 855 860 865 870
RF frequency(MHz)
IIP3 vs. RF frequnecy
V =V =2.8V,Lower LOCAL,f =110MHz,
MIX LO
IF
P =-25dBm,P =-10dBm
RF
LO
10
9
8
7
6
5
4
3
-40oC
+25oC
2
-20oC
+55oC
1
0oC
+85oC
0
830 835 840 845 850 855 860 865 870
RF frequency(MHz)
Equations of OIP3 and IIP3
OIP3=(3xIF-IM3)/2
(1)
IIP3=OIP3-Gc
(2)
IF: IF Power (dBm)
IM3: IM3 Power (dBm)
Gc: Conversion Gain (dB)
@PRF=-25dBm
Q The values of OIP3 and IIP3 shown in typical characteristics are calculated from equation (1), (2)
-6-
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