DG538A Datasheet, PDF (12/16 Pages) Vishay Siliconix – 4-/8-Channel Wideband Video Multiplexers

DG534A/538A
Vishay Siliconix
TEST CIRCUITS
S_A1
R_IN
S_An
S_B1
S_Bn
+5 V
V_IN
+15 V
V_L
EN
8/4, 4/2
+
10 mF
V+
S_A2 – S_Bn
RS
D_A
S_A1
A₀
I/O
to
GND WR ^A2 V–
100 nF
V_O
50 W
+
10 mF
–3 V
100 nF
FIGURE 6. Bandwidth
8/4 or 4/2 = Logic “0”
D_A
S_A1
V_OUT
S_An
R_L
S_B1
D_B
S_Bn
All Channels Off
D_A
V_OUT
R_L
75 W
D_B
X_TALK(AH) + 20 log₁₀
V_OUT
V
Note: S_A1 on or any other one channel on.
FIGURE 7. All Hostile Crosstalk
X_TALK(CD)
+ 20
log₁₀
V_OUT
V
FIGURE 8. Chip Disabled Crosstalk
R_IN
10 W
V_Sn–1
V_Sn
V_Sn+1
R_IN
10 W
S_n–1
S_n
S_n+1
R_IN
R_L
10 kW
V_{Sn – 1}
V_{Sn ) 1}
X_TALK(AI) + 20 log_{10 VSn} or 20 log_{10 VSn}
FIGURE 9. Adjacent Input Crosstalk
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Channels S_A1 and S_B1 On
4/2 = Logic “1”
S_A1
D_A
V_OUT
S_An
R_L
S_B1
D_B
S_Bn
V
R_L
Signal
Generator
X_TALK(DIFF)
+
20
log₁₀
V_OUT
V
FIGURE 10. Differential Crosstalk
Document Number: 70069
S-05734—Rev. G, 29-Jan-02