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Micrel, Inc.
Absolute Maximum Ratings (1)
Supply Voltage (V DDRF , V DDBB )........................................+7V
Reference Oscillator Input Voltage (V REFOSC ).............. V DDBB
Input/Output Voltage (V I/O ). ....................V SS –0.3 to V DD +0.3
Junction Temperature (T J ) ....................................... +150°C
Storage Temperature (T s ) ........................... –65°C to 150°C
Lead Temperature (soldering, 10 sec.)...................... 260°C
ESD Rating (3)
MICRF008
Operating Ratings (2)
Supply Voltage (V DD ).................................. +4.75V to +5.5V
Ambient Temperature (T A ) .......................... –40°C to +85°C
RF Frequency Range.............................. 300MHz to 440Hz
Data Duty-Cycle ................................................20% to 80%
Reference Oscillator Input Range.............. 0.2V PP to 1.5V PP
Demon Bandwidth........................................... 0.1 to 4.8kHz
Electrical Characteristics (4)
+4.75V ≤ V DD ≤ 5.5V, V SS = 0V; C AGC = 4.7 μ F, C TH = 2.2 μ F no preamble for data; f REFOSC = 3.36MHz. T A = 25°C, bold
values indicate –40°C ≤ T A ≤ +85°C; current flow into device pins is positive; unless noted.
Symbol
I OP
Parameter
Operating Current
Condition
Continuous 315MHz operation
Min
Typ
7
Max
9
Units
mA
continuous 433.92MHz operation
reference oscillator powered down
13
2
16
2.5
mA
mA
RF Section, IF Section
Receiver Sensitivity
315MHz, SEL0 = 0V; Notes 5, 6
433.92MHz, SEL0 = 0V; Notes 5, 6
–90
–90
–95
–95
dBm
dBm
f IF
f BW
IF Center Frequency
IF Bandwidth
Maximum Receiver Input
Spurious Reverse Isolation
AGC Attack to Decay Ratio
Note 7
315MHz, Notes 6, 7
433.92MHz, Notes 6, 7
R SC = 50 ?
ANT pin, R SC = 50 ? , Note 8
t ATTACK ÷ t DECAY
2.0
0.8
1.1
–20
30
0.1
MHz
MHz
MHz
dBm
μV RMS
Reference Oscillator
Reference Oscillator Source
Current
7
μA
Z REFOSC
Reference Oscillator Input
Impedance
Note 9
200
k ?
Demodulator
Z CTH
Δ Z CTH
C TH Source Impedance
Maximum C TH Source
Impedance Variation
V SEL0 = V DD , See Table 1, Note 10
220
±15
k ?
%
Digital/Control Section
Z IN(pu)
Input Pull-Up Impedance
SEL0
1.0
0.8
M ?
I OUT
V OUT(high)
V OUT(low)
t R , t F
Output Current
Output High Voltage
Output Low Voltage
Output Rise and Fall Times
DO pin, push-pull
DO pin, I OUT = 1 μ A
DO pin, I OUT = 1 μ A
DO pin, C LOAD = 15pF
0.8V DD
10
10
0.2V DD
μA
V
V
μs
August 2008
3
M9999-080108
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