DG3157_09 Datasheet, PDF (5/8 Pages) Vishay Siliconix – High-Speed, Low RON, SPDT Analog Switch

AC LOADING AND WAVEFORMS
DG3157
Vishay Siliconix
From Output
Under Test
R_L
500 Ω
C_L
50 pF
R_L
500 Ω
Load Circuit
V_LD
SW
Open
GND
TEST
t_PLH/t_PHL
t_PLZ/t_PZL
t_PHZ/t_PZH
SW
Open
V_LD
GND
Figure 2. AC Test Circuit
t_r = 2.5 ns
Switch
Input
10 %
90 %
1.5 V
90 %
1.5 V
t_w
t _{PL H}
Output
1.5 V
t_f = 2.5 ns
t_f = 2.5 ns
3.0 V
90 %
Logic
Input
1.5 V
10 %
GND
10 %
t _{PZ L}
10 %
t _{PH L}
V_OH
1.5 V
Output
Waveform 1
SW at V_LD
t _{PZ H}
1.5 V
V_OL
Output
Waveform 2
SW at GND
1.5 V
t_r = 2.5 ns
90 %
3.0 V
1.5 V
GND
t _{PL Z}
V_LD
2
V_OL + 0.3 V
V_OL
t _{PH Z}
V_OH
V_OH 0.3 V
0V
Propagation Delay Times
Enable and Disable Time-Low- and High-Level Enabling
Figure 3. AC Waveforms
Notes:
• C_L includes probe and jig capacitance.
• Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.
• Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.
• All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, Z_O = 50 Ω.
• The outputs are measured one at a time with one transition per measurement.
• t_PLZ and t_PHZ are the same as t_dis.
• t_PZL and t_PZH are the same as t_dis.
• t_PLH and t_PHL are the same as t_dis.
• V_LD = 2 V+.
Document Number: 72648
S09-0294-Rev. D, 23-Feb-09
www.vishay.com
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