
Micrel
Absolute Maximum Ratings (1)
Supply Voltage (V DD ) .................................................+5V
Input Voltage .............................................................+5V
Junction Temperature ......................................... +150°C
Lead Temperature (soldering, 10sec.) .................. 260°C
Storage Temperature (T S ) .....................-65oC to +150°C
Maximum Receiver Input Power ........................+10dBm
MICRF218
Operating Ratings (2)
Supply voltage (V DD )............................ +3.0V to +3.6V
Ambient Temperature (T A ).................. –40°C to +85°C
Input Voltage (V IN ) ......................................3.6V (Max)
Maximum Input RF Power .............................. –20dBm
Operating Frequency.......................... 300 to 450 MHz
ESD Rating(3) ......................................................... 3KV
Electrical Characteristics (4)
Specifications apply for VDD = 3.0V, VSS = 0V, CAGC = 4.7uF, CTH = 0.1uF, Bold values indicate –40°C - TA +85°C.
Symbol Parameter Condition Min Typ Max Units
Continuous Operation, f RX = 315 MHz 4.0 mA
I DD
Ishut
MICRF218 Operating
Supply Current
Shut down Current
20:1 Duty Cycle, f RX = 315 MHz
Continuous Operation, f RX = 433.92 MHz
20:1 Duty Cycle, f RX = 433.92 MHz
0.2
5.5
0.3
1
mA
mA
mA
μA
RF/IF Section
Image Rejection
20
dB
1 st IF Center
Frequency
1 st IF Center
Frequency
Receiver Sensitivity @
1kbps
Receiver Sensitivity @
1kbps
IF Bandwidth
Antenna Input
Impedance
f RX = 315 MHz, Narrow IF
f RX = 433.92 MHz, Narrow IF
f RX = 315 MHz, Wide IF
f RX = 433.92 MHz, Wide IF
f RX = 315 MHz, Narrow IF (50 ohms)
f RX = 433.92 MHz, Narrow IF (50 ohms)
f RX = 315 MHz, Wide IF (50 ohms)
f RX = 433.92 MHz, Wide IF (50 ohms)
f RX = 315 MHz, Narrow IF
f RX = 433.92 MHz, Narrow IF
f RX = 315 MHz, Wide IF
f RX = 433.92 MHz, Wide IF
f RX = 315 MHz
f RX = 433.92 MHz
0.98
1.4
1.8
2.4
-108
-108
-106
-106
400
550
1000
1500
16-j211
9.54-j152
MHz
MHz
MHz
MHz
dBm
dBm
dBm
dBm
kHz
kHz
kHz
kHz
?
?
Receive Modulation
Duty Cycle
Note 6
20
80
%
November 2011
3
M9999-111111
(408) 944-0800