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DG409DQ

Part # DG409DQ
Description ANLG MUX DUAL 4:1 20V/36V 16TSSOP - Bulk
Category IC
Availability In Stock
Qty 50
Qty Price
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11 - 21 $2.71375
22 - 31 $2.55867
32 - 42 $2.37776
43 + $2.11931
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Technical Document


DISCLAIMER: The information provided herein is solely for informational purposes. Customers must be aware of the suitability of this product for their application, and consider that variable factors such as Manufacturer, Product Category, Date Codes, Pictures and Descriptions may differ from available inventory.

www.vishay.com
10
Document Number: 70062
S-71155–Rev. G, 11-Jun-07
Vishay Siliconix
DG408/409
TEST CIRCUITS
Figure 5. Charge Injection
A
0
EN
A
1
A
2
V
O
V+
GND V-
D
- 15 V
+ 15 V
R
g
S
X
C
L
10 nF
Channel
Select
3 V
0 V
OFF ON
Logic
Input
Switch
Output
ΔV
O
ΔV
O
is the measured voltage due to charge transfer
error Q, when the channel turns off.
Q = C
L
x ΔV
O
OFF
Figure 6. Off Isolation
Figure 8. Insertion Loss
R
L
1 kΩ
V
O
V+
GND V-
- 15 V
+ 15 V
A
2
D
A
1
A
0
S
8
S
X
V
S
EN
R
g
= 50 Ω
Off Isolation = 20 log
V
OUT
V
IN
V
IN
R
L
1 kΩ
A
2
V
O
D
R
g
= 50 Ω
Insertion Loss = 20 log
V
OUT
A
1
V
IN
A
0
V
S
S
1
V+
GND V-
- 15 V
+ 15 V
EN
Figure 7. Crosstalk
Figure 9. Source Drain Capacitance
R
L
1 kΩ
V
O
V+
GND V-
- 15 V
+ 15 V
A
2
D
A
1
A
0
S
8
S
X
V
S
EN
R
g
= 50 Ω
Crosstalk = 20 log
V
OUT
V
IN
V
IN
S
1
f = 1 MHz
S
1
D
EN
+ 15 V
- 15 V
GND
V+
V-
Meter
HP4192A
Impedance
Analyzer
or Equivalent
S
8
A
1
A
2
A
0
Channel
Select
Document Number: 70062
S-71155–Rev. G, 11-Jun-07
www.vishay.com
11
Vishay Siliconix
DG408/409
APPLICATIONS HINTS
Overvoltage Protection
A very convenient form of overvoltage protection consists of
adding two small signal diodes (1N4148, 1N914 type) in
series with the supply pins (see Figure 10). This
arrangement effectively blocks the flow of reverse currents.
It also floats the supply pin above or below the normal V+ or
V- value. In this case the overvoltage signal actually
becomes the power supply of the IC. From the point of view
of the chip, nothing has changed, as long as the difference
VS - (V-) doesn’t exceed + 44 V. The addition of these diodes
will reduce the analog signal range to 1 V below V+ and 1 V
above V-, but it preserves the low channel resistance and low
leakage characteristics.
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 http://www.vishay.com/ppg?70062.
Figure 10. Overvoltage Protection Using Blocking Diodes
1N4148
DG408
D
V-
V+
1N4148
S
X
V
g
Figure 11.
EN
A
0
A
1
+ 15 V
(MUX On-Off Control)
Analog
Inputs
(Outputs)
Clock
In
NC
Enable In
Analog
Output
(Input)
+ 15 V - 15 V
DG408
D
EN
GND
DM7493
V+ V-
NC
GND
+ 15 V
Analog
Inputs
(Outputs)
Analog
Outputs
(Inputs)
+ 15 V - 15 V
DG409
GNDV+ V-
Differential
Differential
Clock
In
NC
GND
+ 15 V
NC
6
Reset Enable
J
K
CLK
J
K
CLK
CLEAR CLEAR
Q
S
5
S
7
S
6
S
8
S
1
S
3
S
2
S
4
S
1a
S
3a
S
2a
S
4a
S
1b
S
3b
S
2b
S
4b
D
a
D
b
A
0
A
1
A
2
B
IN
A
IN
r
01
r
02
Q
B
Q
C
Q
D
Q
A
1/2 MM74C73 1/2 MM74C73
Q
Q
Q
8-Channel Sequential Multiplexer/Demultiplexer
Differential 4-Channel Sequential Multiplexer/Demultiplexer
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
Disclaimer
Legal Disclaimer Notice
Vishay
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
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