DG2788 Datasheet, PDF (7/9 Pages) Vishay Siliconix – Low Voltage, Low On-Resistance, Dual DPDT/Quad SPDT Analog Switch

TEST CIRCUITS
DG2788/DG2789
Vishay Siliconix
Switch
Input
Logic
Input
V+
V+
NO or NC
COM
IN
GND
0V
Switch Output
V_OUT
R_L
50 Ω
C_L
35 pF
Logic
Input
Switch
Output
C_L (includes fixture and stray capacitance)
( ) ^V_OUT
= V_COM
R_L
R_L ⁺ R_ON
Figure 1. Switching Time
V_INH
V_INL
50 %
t_r ^< 5 ns
t_f < 5 ns
0.9 x V_OUT
0V
t_ON
t_OFF
Logic "1" = Switch On
Logic input waveforms inverted for switches that have
the opposite logic sense.
V+
V+
NO
V_NO
COM
NC
V_NC
IN
GND
R_L
50 Ω
V_O
C_L
35 pF
Logic _VINH
Input
V_INL
V_NC = V_NO
V_O
Switch _{0 V}
Output
90 %
t_D
t_r < 5 ns
t_f < 5 ns
t_D
C_L (includes fixture and stray capacitance)
Figure 2. Break-Before-Make Interval
V+
V_gen
R_gen
+
V_IN = 0 - V+
V+
NC or NO
IN
GND
COM
V_OUT
V_OUT
Δ V_OUT
C_L = 1 nF
IN
On
Off
On
Q = ΔV_OUT x C_L
Figure 3. Charge Injection
IN depends on switch configuration: input polarity
determined by sense of switch.
Document Number: 73863
S-70327–Rev. D, 26-Feb-07
www.vishay.com
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