NJM2540 Ver la hoja de datos (PDF) - Japan Radio Corporation
Número de pieza
componentes Descripción
Fabricante
NJM2540 Datasheet PDF : 8 Pages
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TYPICAL CHARACTERISTICS
Vcc=5V,fIF=45.75MHz,TA=25°C
C O N V E R TION G AIN v sR F F R EQ U E NC Y
60
50
40
30
VHF _Lo w VHF _Hi
UH F
20
10
0
0
200
400
600
800
R F FRE QU ENC Y [MH z]
PCS BEATvsRF FREQUENCY
f p/fc/fs:Id e ntit y Lev el,IF Lev e l= -10d Bm
80
75
70
fIF +92 0H z
65
VHF_Low VHF _Hi
UHF
60
55
fRF-920KH z
50
45
40
0
20 0
40 0
60 0
80 0
R FFR EQUE NCY [M Hz]
NJM2540/2543
RF IN P U T L EV E L v sIF O UT P U T L E V E L
20
10
0
-1 0
-2 0
-3 0
-4 0
-80
fR F=127.25M Hz (VH F_L ow)
fR F=361.25M Hz (VH F_H i)
fRF= 80 1.25M H z (UHF)
-6 0
-4 0
-2 0
0
20
RF INP UT LEV EL [dBm]
NOISE FIG UREvsRF FREQUENCY
20
16
VHF_Low VHF_Hi
12
UHF
8
4
0
0
200
400
600
800
RF FREQUE NCY [MHz]
-7-
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