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Low-Cost, 308MHz, 315MHz, and 433.92MHz
FSK Transceiver with Fractional-N PLL
Typical Operating Characteristics (continued)
(Typical Operating Circuit, V PAVDD = V AVDD = V DVDD = V HVIN = +3.0V, f RF = 433.92MHz, IF BW = 280kHz. 4kbps Manchester
encoded, 0.2% BER deviation = ±50kHz, T A = +25°C, unless otherwise noted.)
TRANSMITTER
SUPPLY CURRENT
SUPPLY CURRENT vs. SUPPLY VOLTAGE
vs. SUPPLY VOLTAGE
SUPPLY CURRENT vs. OUTPUT POWER
16
f RF = 315MHz
17
f RF = 434MHz
T A = +85 ° C
12
11
f RF = 315MHz
14
T A = +85 ° C
15
10
9
12
T A = +125 ° C
T A = -40 ° C
13
T A = +125 ° C
T A = -40 ° C
8
7
10
8
T A = +25 ° C
11
9
T A = +25 ° C
6
5
4
2.1
2.4
2.7
3.0
3.3
3.6
2.1
2.4
2.7
3.0
3.3
3.6
-14
-10
-6
-2
2
6
10
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. OUTPUT POWER
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. SUPPLY VOLTAGE
AVERAGE OUTPUT POWER (dBm)
OUTPUT POWER vs. SUPPLY VOLTAGE
14
13
12
11
f RF = 434MHz
14
12
10
f RF = 315MHz
T A = -40 ° C
T A = +25 ° C
14
12
10
f RF = 434MHz
T A = +25 ° C
T A = -40 ° C
10
9
8
7
8
6
T A = +125 ° C
T A = +85 ° C
8
6
T A = +125 ° C
T A = +85 ° C
6
5
4
4
-14
-10
-6
-2
2
6
10
2.1
2.4
2.7
3.0
3.3
3.6
2.1
2.4
2.7
3.0
3.3
3.6
AVERAGE OUTPUT POWER (dBm)
EFFICIENCY vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
EFFICIENCY vs. SUPPLY VOLTAGE
40
f RF = 315MHz
T A = -40 ° C
40
f RF = 434MHz
T A = -40 ° C
35
T A = +25 ° C
35
T A = +25 ° C
30
30
T A = +85 ° C
25
T A = +85 ° C
25
T A = +125 ° C
T A = +125 ° C
20
20
2.1
2.4
2.7
3.0
3.3
3.6
2.1
2.4
2.7
3.0
3.3
3.6
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
8
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