DG538A Datasheet, PDF (11/16 Pages) Vishay Siliconix – 4-/8-Channel Wideband Video Multiplexers

TEST CIRCUITS
+15 V
+
10 mF
100 nF
+5 V
Logic
Input
V+
EN
S_A1
V_L
S_B1
RS
S_A2 – S_Bn
A₀, A₁, A₂
D_A
8/4
or
D_B
WR GND ^4/2 I/O V–
+1 V
+
10 mF
–3 V
100 nF
DG534A/538A
Vishay Siliconix
Logic Input
t_r <20 ns
t_f <20 ns
3V
0V
50%
90%
1 kW
V_O
45 pF
S₁
Turning Off
BBM Interval
Transition Time
(t_TRANS)
A₀, A₁, A₂
V_OUT
S₁₆
Turning On
FIGURE 4. Transition Time and Break-Before-Make Interval
+15 V
+5 V
+
10 mF
V_L
V+
A₀, A₁, A₂, RS
S_Bn
D_B
EN
8/4
or
GND ^4/2 WR
D_A
I/O V–
+
10 mF
–3 V
100 nF
V_O
C_L = 1000 pF
100 nF
EN
V_OUT
DV_OUT
DV_OUT is the measured voltage error due to
charge injection. The charge injection in Cou-
lombs is Q = C_L x DV_OUT
Document Number: 70069
S-05734—Rev. G, 29-Jan-02
FIGURE 5. Charge Injection
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