MRF840 Datasheet, PDF (3/4 Pages) Motorola, Inc – RF POWER TRANSISTOR NPN SILICON

14
12
10
8
6
4
2
f = 870 MHz
0
0
0.5
1
1.5
2
2.5
3
3.5
Pin, INPUT POWER (WATTS)
Figure 2. Output Power versus Input Power
14
13
Pin = 3 W
12
11
10
2W
9
8
7
6
1W
5
VCC = 12.5 V
4
800
820
840
860
880
900
f, FREQUENCY (MHz)
Figure 3. Output Power versus Frequency
20
18
16
Pin = 3 W
14
2W
12
10
8
1W
6
4
f = 870 MHz
2
0
6 7 8 9 10 11 12 13 14 15 16
VCC, SUPPLY VOLTAGE (Vdc)
Figure 4. Output Power versus Supply Voltage
2
0
2
1
ZOL* ₈₇₀ ² ₉₀₀
836 ₃
f = 800 MHz₄
6
4
6
f = 800 MHz
870
Zin
836
900
Pout = 10 W, VCC = 12.5 Vdc
f
Zin
MHz
Ohms
ZOL*
Ohms
800
2.0 + j6.1
3.3 – j0.4
836
2.0 + j6.2
3.0 – j0.3
870
2.0 + j6.4
2.5 + j0.0
900
2.0 + j6.8
2.0 + j0.3
ZOL* = Conjugate of the optimum load impedance
ZOL* = into which the device output operates at a
ZOL* = given output power, voltage and frequency.
Figure 5. Series Equivalent Input/Output Impedance
MOTOROLA RF DEVICE DATA
MRF840
3