MAX1479 Datasheet, PDF (4/11 Pages) Maxim Integrated Products – 300MHz to 450MHz Low-Power, Crystal-Based +10dBm ASK/FSK Transmitter

300MHz to 450MHz Low-Power,
Crystal-Based +10dBm ASK/FSK Transmitter
Typical Operating Characteristics
(Typical Application Circuit, V_DD = +2.7V, T_A = +25°C, unless otherwise noted.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
15
f_RF = 315MHz
14 PA ON
13
T_A = -40°C
12
T_A = +25°C
11
10
T_A = +85°C
9
T_A = +125°C
8
7
2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
10.0
9.5
f_RF = 315MHz
PA 50% DUTY CYCLE AT 10kHz
9.0
8.5
8.0
T_A = +85°C
7.5
T_A = +125°C
7.0
6.5
T_A = +25°C
6.0
T_A = -40°C
5.5
5.0
2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
15
f_RF = 433MHz
14 PA ON
13
T_A = -40°C
12
T_A = +25°C
11
10
T_A = +85°C
9
T_A = +125°C
8
7
2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
10.0
9.5
f_RF = 433MHz
PA 50% DUTY CYCLE AT 10kHz
9.0
8.5
T_A = +85°C
8.0
7.5 ^TA ^{= +125°C}
7.0
T_A = +25°C
6.5
6.0
T_A = -40°C
5.5
5.0
2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. OUTPUT POWER
12
11 ^{fRF = 315MHz}
10
9
8
PA ON
7
6
5
4
50% DUTY CYCLE
3
2
-14 -10 -6 -2
2
6 10
AVERAGE OUTPUT POWER (dBm)
SUPPLY CURRENT vs. OUTPUT POWER
12
11 ^{fRF = 433MHz}
10
9
8
PA ON
7
6
5
4
50% DUTY CYCLE
3
2
-14 -10 -6 -2
2
6 10
AVERAGE OUTPUT POWER (dBm)
SUPPLY CURRENT AND OUTPUT POWER
vs. EXTERNAL RESISTOR
18
16 ^{MAX1479 toc07}
16
f_RF = 315MHz
PA ON
12
14
POWER
8
12
4
10
0
8
CURRENT
-4
6
-8
4
-12
2
-16
0.1
1
10 100 1k 10k
EXTERNAL RESISTOR (Ω)
SUPPLY CURRENT AND OUTPUT POWER
vs. EXTERNAL RESISTOR
18
16 ^{MAX1479 toc08}
16
f_RF = 433MHz
PA ON
12
14
POWER
8
12
4
10
0
8
CURRENT
-4
6
-8
4
-12
2
-16
0.1
1
10 100 1k 10k
EXTERNAL RESISTOR (Ω)
4 _______________________________________________________________________________________