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| MAX1479_09 Datasheet, PDF (5/10 Pages) Maxim Integrated Products – 300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter | |||
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300MHz to 450MHz Low-Power,
Crystal-Based +10dBm ASK/FSK Transmitter
Typical Operating Characteristics (continued)
(Typical Application Circuit, VDD = +2.7V, TA = +25°C, unless otherwise noted.)
OUTPUT POWER vs. SUPPLY VOLTAGE
16
fRF = 315MHz
PA ON
14
TA = -40°C
12
TA = +25°C
10
TA = +85°C
8
TA = +125°C
6
4
2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. SUPPLY VOLTAGE
16
fRF = 433MHz
PA ON
14
TA = -40°C
12
TA = +25°C
10
TA = +85°C
8
TA = +125°C
6
4
2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. SUPPLY VOLTAGE
16
fRF = 315MHz
14
PA ON
ENVELOPE SHAPING
TA = -40°C
DISABLED
12
TA = +25°C
10
TA = +85°C
8
TA = +125°C
6
4
2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. SUPPLY VOLTAGE
16
fRF = 433MHz
14
PA ON
ENVELOPE SHAPING
TA = -40°C
DISABLED
12
TA = +25°C
10
TA = +85°C
8
TA = +125°C
6
4
2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
PHASE NOISE vs. OFFSET FREQUENCY
-40
-50
-60
fRF = 315MHz
-70
-80
-90
-100
fRF = 433MHz
-110
-120
-130
-140
100
1k 10k 100k 1M 10M
OFFSET FREQUENCY (Hz)
CLOCK SPUR MAGNITUDE
vs. SUPPLY VOLTAGE
-40
fRF = 315MHz
-45
CLKOUT SPUR = fRF ± fCLKOUT
10pF LOAD CAPACITANCE
-50
fCLKOUT = fXTAL/16
-55
-60
fCLKOUT = fXTAL/8
-65
fCLKOUT = fXTAL/4
-70
2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
10
8
6
4
2
0
-2
-4
-6
-8
-10
2.1
FREQUENCY STABILITY
vs. SUPPLY VOLTAGE
fRF = 315MHz
fRF = 433MHz
2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
_______________________________________________________________________________________ 5
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