MD0101K6-G Ver la hoja de datos (PDF) - Supertex Inc
Número de pieza
componentes Descripción
Fabricante
MD0101K6-G Datasheet PDF : 7 Pages
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MD0101
Switch Capacitance
The typical switch ON capacitance, CSW(ON), is 21pF. This is
measured from TX to RX when the switch is ON. The switch
OFF capacitance is a function of the voltage across the T/R
switch. The CTX(OFF) is about 11 - 6.5pF for 10 - 90V of the
transmit voltage. Please see Figure 1 for the C-V curve of
the CTX(OFF).
Figure 3: TOFF Timing Diagram
+10V
VTX
+2V
Figure 1: CTX-RX vs VTX-RX
13.0
12.0
11.0
10.0
9.0
8.0
7.0
6.0 0
10
20
30
40
50
60
VTX-RX
70
80
90 100
10%
VRX
Figure 4: TOFF at VTX = 10V
TON and TOFF Time
The TON and TOFF of the MD0101 are less than 20ns, which
provide a fast switch between the transmit mode and the
receive mode. The TON and TOFF are input rise/fall time de-
pendent. The T/R switch turns ON and OFF faster when the
rise and fall times of the transmit pulse are faster. On the
other hand, the switch turns ON and OFF slower if the rise
and fall times of the transmit pulse are slower. The TOFF and
TON set ups are shown in Figure 2 and Figure 5 respectively.
Figure 2: Test set up for TOFF
Transmitter
500ns
+10V
0V
TX
Figure 4 shows the actual waveform and measurement of
the TOFF. The TOFF is measured from 2.0V of the VTX to 10%
of the VRX.
Figure 5: Test set up for TON
Transmitter
500ns
+10V
0V
TX
RX
MD0101
TX
10Ω
RGND
(Floating or connect to RX)
2.0V
15Ω
RX MD0101 TX
RGND
(Floating or connect to RX)
Supertex inc. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ● Tel: 408-222-8888 ● www.supertex.com
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