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300MHz-to-450MHz Low-Power,
Crystal-Based ASK Transmitter
ABSOLUTE MAXIMUM RATINGS
V DD to GND ..........................................................-0.3V to +4.0V
All Other Pins to GND ................................-0.3V to (V DD + 0.3V)
Continuous Power Dissipation (T A = +70°C)
8-Pin SOT23 (derate 8.9mW/°C above +70°C)............714mW
Operating Temperature Range .........................-40°C to +125°C
Storage Temperature Range .............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
( Typical Application Circuit , output power is referenced to 50 ? , V DD = 2.1V to 3.6V, V ENABLE = V DD , T A = -40 ° C to +125 ° C, unless
otherwise noted. Typical values are at V DD = 2.7V, T A = +25 ° C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SYSTEM PERFORMANCE
Supply Voltage
V DD
f RF = 315MHz
V ENABLE = V DD
(Note 2)
V ENABLE = V DD ,
V DATA = V DD
2.1
5.3
9.1
3.6
9.4
16.6
V
Supply Current
I DD
V ENABLE = V DD ,
V DATA = 0V
V ENABLE = V DD
(Note 2)
1.5
5.7
2.3
mA
f RF = 433MHz
V ENABLE = V DD ,
V DATA = V DD
9.6
V ENABLE = V DD ,
V DATA = 0V
1.7
2.7
Standby Current
Frequency Range
Data Rate
Modulation Depth
I STDBY
f RF
V ENABLE < V IL , T A < +85 ° C (Note 3)
V ENABLE < V IL T A < +125 ° C (Note 3)
(Note 1)
(Note 3)
ON to OFF P OUT ratio (Note 4)
T A = +25 ° C, V DD = 2.7V (Notes 5, 6)
300
0
7.3
5
90
10.3
350
1.7
450
100
12.8
nA
μA
MHz
kbps
dB
Output Power
P OUT
T A = +125 ° C, V DD = 2.1V (Notes 5, 6)
3.3
6.0
dBm
T A = -40 ° C, V DD = 3.6V (Notes 5, 6)
13.7
16.2
Turn-On Time
Transmit Efficiency with CW
Transmit Efficiency at 50%
Duty Cycle
t ON
To f OFFSET < 50kHz (Note 7)
To f OFFSET < 5kHz (Note 7)
f RF = 315MHz (Note 8)
f RF = 433MHz (Note 8)
f RF = 315MHz (Note 9)
f RF = 433MHz (Note 9)
220
450
43.6
41.3
37.6
35.1
μs
%
%
2
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