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LR680R
LR680R ASK/OOK , 。、、、、、 、、, , 。
–112 dBm(OOK ); FCC/ETSI 300MHz~440MHz; 2V ~ 5.5V 2mA(315MHz) 2.5mA(433.92MHz) ;
SOP8
IC LR45B
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(8Pin) 1 2 3 4
VSSRF ANT VDDRF CTH
5 DOUT 6 SHUT 7 CAGC 8 OSC
,, 120kΩ, , . :47nF~ 1μF ,CMOS , 0, VDD,, AGC , ,, ,
:VVDD=5V,25ºC,CAGC=4.7μF,CTH=1μF, 2 kb/s。
Symbol Parameter VVDD Supply Voltage
Condition
Min Typ 25
IVDD Operatiing Current
fRF = 315 MHz
fRF = 433.92 MHz fRF Operating Frequency range
Receiver Sensitivity
OOK modulation
2 2.5 300 –112
Max Units 5.5 V
2.5 mA 2.8 mA 440 MHz
dBm
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fIF IF Center Frequency
fRF = 315 MHz
fBW IF -3dB Bandwidth
fRF = 433.92 MHz
Z11 Input Impedance of ANT Operating at 315 MHz
Pin
Operating at 433.92 MHz
Spurious Reverse Isolation ANT Pin
AGC Attack to Decay
Ration
ZOSC Reference Oscillator Input
Impedance
ZCTH CTH Source Impedance
VIH Input High Voltage
SHUT Pin
VIL Input Low Voltage
SHUT Pin
IOUT Output Current
DOUT Pin
:
0.86 1.185 0.5 21.78–j335
MHz MHz kHz
17.25–j235 30 1:10
μVrms
300 kΩ
120 0.8
20
kΩ VVDD 0.2 VVDD μA
SYN480 5V 2.5mA -106dBm
5V 2mA 《-107dBm
LR680R/LR45B 2-5V 2mA -112dBm 》20dB
3dBm
:
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315Mhz
433Mhz
.