DG542 VISHAY [Vishay Siliconix], DG542 Datasheet - Page 7

• Manufacturer Part Number: DG542
• Description: Wideband/Video T Switches
• Manufacturer: VISHAY [Vishay Siliconix]

Document Number: 70055
S-00399—Rev. G, 13-Sep-99
V
g
3 V
V
S
Off Isolation = 20 log
R
C = RF Bypass
g
0 V, 2.4 V
= 75
C
V
3 V
L
R
O
S
IN
(includes fixture and stray capacitance)
g
GND
= V
S
V+
C
FIGURE 4. Off Isolation
S
IN
IN
S
GND
+15 V
R
GND
–3 V
L
V
V
V–
R
+ r
S
O
L
D
DS(on)
V+
V+
+15 V
–3 V
+15 V
V–
–3 V
V–
D
R
1 k
L
D
C
C
35 pF
L
C
1000 pF
FIGURE 3. Charge Injection
FIGURE 2. Switching Time
L
V
O
R
75
V
V
O
L
O
Switch
Switch
Output
Logic
Input
Input
3 V
V
S
0
V
The charge injection in coulombs is Q = C
S
V
O
R
0 V, 2.4 V
= measured voltage error due to charge injection
V
IN
g
O
X
= 50
ON
50%
C
S
IN
www.vishay.com FaxBack 408-970-5600
FIGURE 5. Bandwidth
GND
V
t
O
ON
DG540/541/542
90%
Vishay Siliconix
OFF
V+
+15 V
–3 V
V–
L
D
x DV
ON
C
t
t
O
r
f
t
<20 ns
<20 ns
OFF
R
V
50
L
O
4-7