This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
TEST CIRCUITS
Figure 2. Switching Time
50 %
0 V
3 V
t
OFF
t
ON
V
O
t
r
< 20 ns
t
f
< 20 ns
Logic
Input
Switch
Output
90 %
C
L
35 pF
R
L
1 kΩ
V
O
= V
S
R
L
+ R
DS(on)
R
L
V
S
= + 2 V
V
O
V-
V+
IN
S
D
3 V
- 15 V
GND
+ 15 V
Figure 3. Off Isolation
S
IN
R
L
D
R
g
= 50 Ω
V
S
V
O
0 V, 2.4 V
Off Isolation = 20 log
V
S
V
O
V+
- 15 V
GNDV-
C
C
+ 15 V
Figure 4. Channel-to-Channel Crosstalk
IN
1
V
O
+ 15 V
- 15 V
GND
R
L
V+
V-
NC
X
TALK
Isolation = 20 log
C
V
S
C
V
O
0 V, 2.4 V
50 Ω
V
S
S
1
IN
2
S
2
R
g
= 50 Ω
D
1
D
2
C = RF bypass
0 V, 2.4 V
Figure 5. Charge Injection
C
L
1000 pF
V
g
3 V
D
V+
V-
R
g
- 15 V
GND
IN
S
V
O
+ 15 V
V
O
ΔV
O
IN
X
ONONOFF
ΔV
O
= measured voltage error due to charge injection
The charge injection in coulombs is Q = C
L
x Δ V
O
www.vishay.com
8
Document Number: 70037
S11-0800-Rev. J, 25-Apr-11
Vishay Siliconix
DG201B, DG202B
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
APPLICATIONS
Figure 6. Sample-and-Hold
LM101A
+ 15 V
- 15 V
30 pF
+ 15 V
- 15 V
V+
V-
DG201B
50 pF
1000 pF
J202
J500
J507
+ 15 V
2N4400
- 15 V
V
IN
V
OUT
1 kΩ
200 Ω
5 MΩ
5.1 MΩ
Aquisition T ime = 25 µs
Aperature T ime = 1 µs
Sample to Hold Of fset = 5 mV
Droop Rate = 5 mV/s
Logic Input
Low = Sample
High = Hold
-
+
Figure 7. Active Low Pass Filter with Digitally Selected Break Frequency
TTL
Control
150 pF
1500 pF
+ 15 V
DG201B
GND
30 pF
LM101A
+ 15 V
- 15 V
1101001K10K100K1M
- 40
0
160
120
80
V oltage Gain - dB
f
C4
Select
f
C3
Select
f
C2
Select
f
C1
Select
R
1
= 10 kΩ
R
2
= 10 kΩ
R
3
= 1 MΩ
V
OUT
V
1
V-
C
4
C
3
C
2
C
1
A
L
(V oltage Gain Below Break Frequency) = = 100 (40 dB)
R
3
R
1
f
C
(Break Frequency) =
1
2πR
3
C
X
1
2πR
1
C
X
f
L
(Unity Gain Frequency) =
Max. Attenuation =
R
DS(on)
10 kΩ
≈- 47 dB
0.015 µF
0.15 µF
- 15 V
-
+
40
f - Frequency (Hz)
f
L1
f
L2
f
L3
f
L4
f
C1
f
C2
f
C3
f
C4
Document Number: 70037
S11-0800-Rev. J, 25-Apr-11
www.vishay.com
9
Vishay Siliconix
DG201B, DG202B
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
APPLICATIONS
Vishay Siliconix maintains worldwide manufacturing capability. Products may be manufactured at one of several qualified locations. Reliability data for Silicon
Technology and Package Reliability represent a composite of all qualified locations. For related documents such as package/tape drawings, part marking, and
reliability data, see www.vishay.com/ppg?70037
.
Figure 8. A Precision Amplifier with Digitally Programable Input and Gains
