DG3537 Datasheet, PDF (8/10 Pages) Vishay Siliconix – 4-Ω, 360-MHz, Dual SPST Analog Switches

DG3537/3538/3539/3540
Vishay Siliconix
TEST CIRCUITS
Switch
Input
Logic
Input
V+
V+
NO or NC
COM
IN
GND
0V
Switch Output
V_OUT
R_L
300 Ω
C_L
35 pF
Logic
Input
V_INH
V_INL
50 %
Switch
Output
0V
t_ON
t_r < 5 ns
t_f < 5 ns
0.9 x V_OUT
t_OFF
C_L (includes fixture and stray capacitance)
V_OUT =
V_NOorNC
R_L
R_L + R_ON
Logic "1" = Switch On
Logic input waveforms inverted for switches that have
the opposite logic sense.
Figure 1. Switching Time
V+
R_gen
+
V_IN = 0 - V+
V+
NC or NO
COM
IN
GND
V_OUT
C_L = 1 nF
V_OUT
ΔV_OUT
IN
On
Off
On
Q = ΔV_OUT x C_L
IN depends on switch configuration: input polarity
determined by sense of switch.
Figure 2. Charge Injection
V+
10 nF
V+
NC or NO
COM _COM
IN
0V, 2.4 V
R_L
GND
Analyzer
V_COM
Off Isolation = 20 log _{VNO/ NC}
Figure 3. Off-Isolation
V+
10 nF
V+
COM
IN
0 V, 2.4 V
NC or NO
GND
Meter
HP4192A
Impedance
Analyzer
or Equivalent
f = 1 MHz
Figure 4. Channel Off/On Capacitance
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Document Number: 73320
S-70853-Rev. C, 30-Apr-07