5
Typical Applications for Multiple Diode Products
(continued)
1
+V
0
2
0
+V
“ON”
“OFF”
1
6
5
4
1
RF out
6
5
4
1
RF in
2
3
1
RF out
2
3
RF in
2
Figure 8. HSMP-389L Unconnected Trio used in a
Positive Voltage, High Isolation Switch.
Figure 9. HSMP-389T used in a Low Inductance
Shunt Mounted Switch.
Bias
Xmtr
C
Ant
λ
4
C
Rcvr
Bias
Xmtr
bias
Ant
λ
4
Rcvr
Bias
Antenna
Xmtr
PA
λ
4
HSMP-389V
LNA
HSMP-389U
λ
4
Rcvr
Figure 10. HSMP-389U Series/Shunt Pair used in a
900 MHz Transmit/Receive Switch.
Figure 11. HSMP-389V Series/Shunt Pair used in a
1.8 GHz Transmit/Receive Switch.