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DG408 Schematic ( PDF Datasheet ) - Maxim Integrated Products

Teilenummer DG408
Beschreibung (DG408 / DG409) CMOS Analog Multiplexers
Hersteller Maxim Integrated Products
Logo Maxim Integrated Products Logo 




Gesamt 12 Seiten
DG408 Datasheet, Funktion
19-4725; Rev 4; 9/08
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
_______________General Description
Maxim’s redesigned DG408 and DG409 CMOS analog
www.DamctahSuhaletneipnt4leUel.xsneet(r8sΩnomwaxfe)aatunrde
guaranteed matching between
flatness over the specified sig-
nal range (9Ω max). These low on-resistance muxes
(100Ω max) conduct equally well in either direction and
feature guaranteed low charge injection (15pC max). In
addition, these new muxes offer low input off-leakage
current over temperature—less than 5nA at +85°C.
The DG408 is a 1-of-8 multiplexer/demultiplexer and
the DG409 is a dual 4-channel multiplexer/demultiplex-
er. Both muxes operate with a +5V to +30V single sup-
ply and with ±5V to ±20V dual supplies. ESD protection
is guaranteed to be greater than 2000V per Method
3015.7 of MIL-STD-883. These improved muxes are
pin-compatible plug-in upgrades for the industry stan-
dard DG408 and DG409.
Applications
Sample-and-Hold Circuits
Test Equipment
Guidance and Control Systems
Communications Systems
Data-Acquisition Systems
Audio Signal Routing
Pin Configurations
____________________________Features
Pin-Compatible Plug-In Upgrades for
Industry Standard DG408/DG409
Guaranteed Matching Between Channels, 8Ω Max
Guaranteed On-Resistance Flatness, 9Ω Max
Guaranteed Low Charge Injection, 15pC Max
Low On-Resistance, 100Ω Max
Input Leakage, 5nA Max at +85°C
Low Power Consumption, 1.25mW Max
Rail-to-Rail Signal Handling
Digital Input Controls TTL/CMOS Compatible
ESD Protection >2000V per Method 3015.7
Ordering Information
PART
TEMP RANGE PIN-PACKAGE
DG408CUE
0°C to +70°C 16 TSSOP
DG408CJ
0°C to +70°C 16 Plastic DIP
DG408CY
0°C to +70°C 16 Narrow SO
DG408C/D
0°C to +70°C
Dice*
DG408EUE
0°C to +70°C 16 TSSOP
DG408DJ
-40°C to +85°C 16 Plastic DIP
DG408DY
-40°C to +85°C 16 Narrow SO
Ordering Information continued at end of data sheet.
*Contact factory for dice specifications.
**Contact factory for availability and processing to MIL-STD-883.
Functional Diagrams
TOP VIEW
A0 1
EN 2
V- 3
S1 4
S2 5
S3 6
S4 7
D8
DG408
16 A1
15 A2
14 GND
13 V+
12 S5
11 S6
10 S7
9 S8
DIP/SO/TSSOP
DG409 appears at end of data sheet.
V+ V- GND
S1
S2
S3
S4
S5
S6
S7
S8
DECODERS/DRIVERS
A0 A1
A2 EN
DG408 1-of-8 MUX/DEMUX
DG409 appears at end of data sheet.
D
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.






DG408 Datasheet, Funktion
Improved, 8-Channel/Dual 4-Channel,
CMOS Analog Multiplexers
______________________________________________________________Pin Description
PIN
DG408
1, 15, 16
2
3
4–7
8
9–12
13
14
DG409
1, 16
2
3
4–7
8, 9
10–13
14
15
NAME
A0, A2, A1
A0, A1
EN
V-
S1–S4
S1A–S4A
D
DA, DB
S8–S5
S4B–S1B
V+
GND
FUNCTION
Address Inputs
Address Inputs
Enable Input
Negative Supply Voltage Input
Bidirectional Analog Inputs
Bidirectional Analog Inputs
Bidirectional Analog Output
Bidirectional Analog Outputs
Bidirectional Analog Inputs
Bidirectional Analog Inputs
Positive Supply Voltage Input
Ground
Applications Information
Operation with
Supply Voltages Other than 15V
Using supply voltages less than ±15V reduces the ana-
log signal range. The DG408/DG409 switches operate
with ±5V to ±20V bipolar supplies or with a +5V to
+40V single supply. Connect V- to GND when operat-
ing with a single supply. Both device types can also
operate with unbalanced supplies, such as +24V and
-5V. The Typical Operating Characteristics graphs
show typical on-resistance with 20V, 15V, 10V, and 5V
supplies. (Switching times increase by a factor of two or
more for operation at 5V.)
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings, because stresses beyond the listed rat-
ings may cause permanent damage to the devices.
Always sequence V+ on first, then V-, followed by the
logic inputs, S or D. If power-supply sequencing is not
possible, add two small signal diodes in series with
supply pins for overvoltage protection (Figure 1).
Adding diodes reduces the analog signal range to 1V
below V+ and 1V above V-, but does not affect the
devices’ low switch resistance and low leakage charac-
teristics. Device operation is unchanged, and the differ-
ence between V+ and V- should not exceed +44V.
V+
DG408
DG409
S
Vg
D
V-
Figure 1. Overvoltage Protection Using External Blocking
Diodes
6 _______________________________________________________________________________________

6 Page









DG408 pdf, datenblatt
Improved, 8-Channel/Dual 4-Channel,
High-Performance, CMOS Analog Multiplexers
REVISION
NUMBER
3
4
REVISION
DATE
8/02
9/08
DESCRIPTION
Changed operating voltage and TSSOP packaging
Added rugged plastic information
Revision History
PAGES
CHANGED
1, 11
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2008 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.

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