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DG419DY Schematic ( PDF Datasheet ) - Maxim Integrated

Teilenummer DG419DY
Beschreibung Improved / SPST/SPDT Analog Switches
Hersteller Maxim Integrated
Logo Maxim Integrated Logo 




Gesamt 12 Seiten
DG419DY Datasheet, Funktion
19-0114; Rev 2; 12/96
Improved, SPST/SPDT Analog Switches
_______________General Description
Maxim’s redesigned DG417/DG418/DG419 precision,
CMOS, monolithic analog switches now feature guar-
anteed on-resistance matching (3max) between
switches and guaranteed on-resistance flatness over
the signal range (4max). These switches conduct
equally well in either direction and guarantee low
charge injection, low power consumption, and an ESD
tolerance of 2000V minimum per Method 3015.7. The
new design offers low off-leakage current over temper-
ature (less than 5nA at +85°C).
The DG417/DG418 are single-pole/single-throw (SPST)
switches. The DG417 is normally closed, and the
DG418 is normally open. The DG419 is single-
pole/double-throw (SPDT) with one normally closed
switch and one normally open switch. Switching times
are less than 175ns max for tON and less than 145ns
max for tOFF. Operation is from a single +10V to +30V
supply, or bipolar ±4.5V to ±20V supplies. The
improved DG417/DG418/DG419 are fabricated with a
44V silicon-gate process.
________________________Applications
Sample-and-Hold Circuits
Test Equipment
Modems
Guidance and Control Systems
Communications Systems
Battery-Operated Systems
Fax Machines
PBX, PABX
Audio Signal Routing
Military Radios
______________________New Features
o Plug-In Upgrades for Industry-Standard
DG417/DG418/DG419
o Improved RDS(ON) Match Between Channels
(3max, DG419 only)
o Guaranteed RFLAT(ON) Over Signal Range (4max)
o Improved Charge Injection (10pC max)
o Improved Off-Leakage Current Over Temperature
(<5nA at +85°C)
o Withstand Electrostatic Discharge (2000V min)
per Method 3015.7
__________________Existing Features
o Low RDS(ON) (35max)
o Single-Supply Operation +10V to +30V
Bipolar-Supply Operation ±4.5V to ±20V
o Low Power Consumption (35µW max)
o Rail-to-Rail Signal Handling
o TTL/CMOS-Logic Compatible
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
DG417CJ
0°C to +70°C
8 Plastic DIP
DG417CY
0°C to +70°C
8 SO
DG417C/D
0°C to +70°C
Dice*
DG417DJ
-40°C to +85°C
8 Plastic DIP
DG417DY
-40°C to +85°C
8 SO
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
S1
N.C. 2
GND 3
V+ 4
DG417
8D
7 V-
6 IN
5 VL
DIP/SO
DG417
LOGIC
SWITCH
0 ON
1 OFF
N.C. = NO INTERNAL CONNECTION
S1
N.C. 2
GND 3
V+ 4
DG418
8D
7 V-
6 IN
5 VL
DIP/SO
DG418
LOGIC
SWITCH
0 OFF
1 ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
D1
S1 2
GND 3
V+ 4
LOGIC
0
1
DG419
DIP/SO
DG419
SWITCH 1
ON
OFF
8 S2
7 V-
6 IN
5 VL
SWITCH 2
OFF
ON
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800






DG419DY Datasheet, Funktion
Improved, SPST/SPDT Analog Switches
______________________________________________________________Pin Description
DG417
1
2
3
4
5
6
7
8
PIN
DG418
1
2
3
4
5
6
7
8
DG419
2
3
4
5
6
7
1
8
NAME
S
S
S1
N.C.
GND
V+
VL
IN
V-
D
S2
FUNCTION
Analog-Switch Source Terminal (normally closed)
Analog-Switch Source Terminal (normally open)
Analog-Switch Source Terminal 1 (normally closed)
No Internal Connection
Logic Ground
Analog-Signal Positive Supply Input
Logic-Level Positive Supply Input
Logic-Level Input
Analog-Signal Negative Supply Input
Analog-Switch Drain Terminal
Analog-Switch Source Terminal 2 (normally open)
__________Applications Information
Operation with Supply Voltages
Other than ±15V
Using supply voltages other than ±15V reduces the
analog signal range. The DG417/DG418/DG419 switch-
es operate with ±4.5V to ±20V bipolar supplies or with
a +10V to +30V single supply; connect V- to 0V when
operating with a single supply. Also, all device types
can operate with unbalanced supplies, such as +24V
and -5V. VL must be connected to +5V to be TTL com-
patible, or to V+ for CMOS-logic level inputs. The
Typical Operating Characteristics graphs show typical
on-resistance with ±20V, ±15V, ±10V, and ±5V sup-
plies. (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, followed by VL, V-, and
logic inputs. If power-supply sequencing is not possi-
ble, add two small, external signal diodes in series with
the supply pins for overvoltage protection (Figure 1).
V+
S
Vg
D
DG41_
V-
Figure 1. Overvoltage Protection Using External Blocking Diodes
Adding diodes reduces the analog signal range to 1V
below V+ and 1V above V-, without affecting low switch
resistance and low leakage characteristics. Device
operation is unchanged, and the difference between
V+ and V- should not exceed +44V.
6 _______________________________________________________________________________________

6 Page









DG419DY pdf, datenblatt
Improved, SPST/SPDT Analog Switches
___________________________________________Package Information (continued)
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
© 1996 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.

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