mhw953 Freescale Semiconductor, Inc, mhw953 Datasheet - Page 3

• Manufacturer Part Number: mhw953
• Description: Uhf Power Amplifiers
• Manufacturer: Freescale Semiconductor, Inc

MOTOROLA RF DEVICE DATA
2.5
1.5
0.5
3
2
1
0
890
Figure 3. Control Voltage, Efficiency and Input
P in = 1 mW
P out = 3.5 W
V s1 = V s2 = V s3 = 7.2 V
V b = 5 V
895
PIN DESIGNATIONS:
Pin 1 — RF Input Power @ 20 dBm Max Adjust for
Pin 1 —
Pin 2 — First Stage Collector Voltage @ 7.2 Vdc
Pin 3 — Trickle Bias Voltage @ 4.5 Vdc
Pin 4 — Third Stage Collector Supply @ 7.2 Vdc
Pin 5 — RF Output Power @ 3.5 W Nominal
VSWR versus Frequency
RF INPUT
1
f, FREQUENCY (MHz)
Output Power
900
Z1
C1
C2
905
2
V s1
VSWR
V cont
Figure 2. Test Circuit Diagram — MHW954
L1
C3
910
CIRCUIT BLOCK DIAGRAM
C4
915
55
50
45
1.5:1
1.0:1
3
V b
L2
C5
5
4
3
2
1
0
0
Figure 4. Output Power versus Control Voltage
ELEMENT VALUES:
C1=C2=C4=C6= 0.018 F
C3=C5=C7= 2.2 F
L1, L2 = 0.29 H
L3 = 0.2 H
Z1, Z2 = 50 Ohm Microstrip
P in = 1 mW
V s1 = V s2 = V s3 = 7.2 V
V b = 5 V
C6
0.5
4
V s2
L3
1
V cont , CONTROL VOLTAGE (Vdc)
C7
1.5
MHW903 MHW953 MHW954
2
RF OUTPUT
Z2
5
2.5
902 MHz
3
f = 890 MHz
915 MHz
3.5
3
4