DG212B Vishay Intertechnology, DG212B Datasheet - Page 7

• Manufacturer Part Number: DG212B
• Description: (DG211B / DG212B) Improved Quad CMOS Analog Switches
• Manufacturer: Vishay Intertechnology

Document Number: 70040
S-00788—Rev. H, 24-Apr-00
Control
Aquisition Time
Aperature Time
Sample to Hold Offset
Droop Rate
TTL
V
R
IN
2
Select
Select
Select
Select
= 10 k
f
R
f
f
f
C2
C4
C3
C1
1
= 10 k
= 5 mV/s
LM101A
+15 V
+
–
30 pF
0.015 F
0.15 F
C
C
C
C
1500 pF
4
150 pF
3
2
1
–15 V
= 25 s
= 1 s
= 5 mV
LM101A
–
+
5 M
30 pF
–15 V
+15 V
FIGURE 7. Active Low Pass Filter with Digitally Selected Break Frequency
5.1 M
V–
DG211B
–15 V
V
1
R
3
+15 V
= 1 M
–15 V
GND
V
V–
L
+ 5 V
FIGURE 6. Sample-and-Hold
DG211B
V
OUT
V+
+15 V
A
Max Attenuation =
L
f
f
C
(Voltage Gain Below Break Frequency) =
L
(Unity Gain Frequency) =
(Break Frequency) =
160
120
–40
1 k
50 pF
80
40
0
1
f
C1
200 W
1000 pF
10
f
C2
r
10 k
DS(on)
J202
f
100
C3
2 R
Frequency – Hz
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1
J500
3
f
Logic Input
Low = Sample
High = Hold
L1
2 R
2N4400
C
–47 dB
+15 V
f
X
C4
1
1 k
1
Vishay Siliconix
C
DG211B/212B
–15 V
X
f
L2
10 k
J507
f
L3
R
R
3
1
V
100 k
OUT
= 100 (40 dB)
f
L4
1 M
4-7