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Low-Cost, 315MHz and 433.92MHz
ASK Transceiver with Fractional-N PLL
Typical Operating Characteristics (continued)
(Typical Application Circuit, V PAVDD = V AVDD = V DVDD = V HVIN = +3.0V, f RF = 433.92MHz, IF BW = 280kHz, 4kbps Manchester
encoded, 0.2% BER, T A = +25°C, unless otherwise noted.)
TRANSMITTER
OUTPUT POWER vs. SUPPLY VOLTAGE
OUTPUT POWER vs. SUPPLY VOLTAGE
OUTPUT POWER vs. SUPPLY VOLTAGE
14
f RF = 315MHz
14
f RF = 315MHz
14
f RF = 434MHz
PA ON
PA ON
PA ON
12
10
ENVELOPE SHAPING DISABLED
T A = -40 ° C
T A = +25 ° C
12
10
ENVELOPE SHAPING ENABLED
T A = -40 ° C
T A = +25 ° C
12
10
ENVELOPE SHAPING DISABLED
T A = -40 ° C
T A = +25 ° C
8
6
T A = +85 ° C
T A = +125 ° C
8
6
T A = +125 ° C
T A = +85 ° C
8
6
T A = +85 ° C
T A = +125 ° C
4
4
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
2.1
2.4
2.7
3.0
3.3
3.6
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
EFFICIENCY vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
EFFICIENCY vs. SUPPLY VOLTAGE
14
12
10
8
f RF = 434MHz
PA ON
ENVELOPE SHAPING ENABLED
T A = -40 ° C
T A = +25 ° C
T A = +125 ° C
40
35
30
25
f RF = 315MHz
PA ON
T A = -40 ° C
T A = +25 ° C
T A = +85 ° C
T A = +125 ° C
40
35
30
25
f RF = 434MHz
PA ON
T A = -40 ° C
T A = +25 ° C
T A = +85 ° C
T A = +125 ° C
T A = +85 ° C
6
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
2.1
2.4
2.7
3.0
3.3
3.6
SUPPLY VOLTAGE (V)
EFFICIENCY vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
EFFICIENCY vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
PHASE NOISE vs. OFFSET FREQUENCY
30
25
f RF = 315MHz
50% DUTY CYCLE
T A = -40 ° C
30
f RF = 434MHz
50% DUTY CYCLE
T A = -40 ° C
-40
-50
-60
f RF = 315MHz
20
T A = +25 ° C
25
T A = +25 ° C
-70
-80
-90
15
T A = +85 ° C T A = +125 ° C
20
T A = +85 ° C
-100
-110
-120
T A = +125 ° C
-130
10
15
-140
2.1
2.4
2.7
3.0
3.3
3.6
2.1
2.4
2.7
3.0
3.3
3.6
100
1k
10k
100k
1M
10M
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
OFFSET FREQUENCY (Hz)
9
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