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PDF DG445 Data sheet ( Hoja de datos )
| Número de pieza | DG445 | |
| Descripción | Improved / Quad / SPST Analog Switches | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-4705; Rev 1; 4/94
Improved, Quad, SPST Analog Switches
_______________General Description
Maxim’s redesigned DG444/DG445 analog switches
now feature on-resistance matching (4Ω max) between
switches and guaranteed on-resistance flatness over
the signal range (9Ω max). These low on-resistance
switches conduct equally well in either direction. They
guarantee low charge injection (10pC max), low power
consumption (35µW max), and an ESD tolerance of
2000V minimum per Method 3015.7. The new design
offers lower off leakage current over temperature (less
than 5nA at +85°C).
The DG444/DG445 are quad, single-pole/single-throw
(SPST) analog switches. The DG444 has 4 normally
closed switches and the DG445 has 4 normally open
switches. Switching times are less than 250ns for tON
and less than 70ns for tOFF. Operation is from a single
+10V to +30V supply, or bipolar ±4.5V to ±20V sup-
plies. Maxim’s improved DG444/DG445 continue to be
fabricated with a 44V silicon-gate process.
________________________Applications
Sample-and-Hold Circuits
Communication Systems
Test Equipment
Battery-Operated Systems
Heads-Up Displays
PBX, PABX
Guidance and Control Systems Audio Signal Routing
Military Radios
Modems/Faxes
______________________New Features
o Plug-In Upgrades for Industry-Standard DG444/DG445
o Improved rON Match Between Channels (4Ω max)
o Guaranteed rFLAT(ON) Over Signal Range (9Ω max)
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) (85Ω max)
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
DG444CJ
0°C to +70°C
16 Plastic DIP
DG444DY
0°C to +70°C
16 Narrow SO
DG444C/D
0°C to +70°C
Dice*
DG444DJ
-40°C to +85°C
16 Plastic DIP
DG444DY
-40°C to +85°C
16 Narrow SO
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
IN1 1
D1 2
S1 3
V- 4
GND 5
S4 6
D4 7
IN4 8
DG444
16 IN2
15 D2
14 S2
13 V+
12 VL
11 S3
10 D3
9 IN3
IN1 1
D1 2
S1 3
V- 4
GND 5
S4 6
D4 7
IN4 8
DG445
16 IN2
15 D2
14 S2
13 V+
12 VL
11 S3
10 D3
9 IN3
DIP/SO
DG444
LOGIC
SWITCH
0 ON
1 OFF
DIP/SO
DG445
LOGIC
SWITCH
0 OFF
1 ON
SWITCHES SHOWN FOR LOGIC "0" INPUT
________________________________________________________________ Maxim Integrated Products 1
Call toll free 1-800-998-8800 for free samples or literature.
1 page  
Improved, Quad, SPST Analog Switches
____________________________Typical Operating Characteristics (continued)
(TA = +25°C, unless otherwise noted.)
ON-RESISTANCE vs. VD
AND UNIPOLAR-SUPPLY VOLTAGE
150
V+ = 5V
125
V+ = 10V
100
V+ = 15V
75
50 V+ = 20V
25
0
0 5 10 15 20
VD (V)
ON-RESISTANCE vs. VD, UNIPOLAR-
SUPPLY VOLTAGE AND TEMPERATURE
150
TA = +125°C
125
100 TA = +25°C
75
TA = -40°C
50
25
V+ = 12V
V- = 0V
0
0
4
8 12
VD (V)
CHARGE INJECTION vs.
VD VOLTAGE
20
V+ = 15V
V- = -15V
CL = 1nF
ON-RESISTANCE vs. VD AND
BIPOLAR-SUPPLY VOLTAGE
120
±5V
90
±10V
60
±15V
30 ±20V
0
-20
160
-10 0 10
VD (V)
SWITCHING TIME vs.
BIPOLAR-SUPPLY VOLTAGE
20
120
tON
80
ON-RESISTANCE vs. VD, BIPOLAR
SUPPLY VOLTAGE AND TEMPERATURE
100
V+ = 15V, V- = -15V
80
60 TA = +125°C
TA = +25°C
40
TA = -55°C
20
0
-15 -10
-5
0
5 10 15
VD (V)
SWITCHING TIME vs.
UNIPOLAR-SUPPLY VOLTAGE
200
V- = 0V
150
100 tON
40
0
±5
tOFF
±10 ±15
BIPOLAR-SUPPLY VOLTAGE (V)
50 tOFF
0
±20 10 15 20
UNIPOLAR-SUPPLY VOLTAGE (V)
CHARGE INJECTION vs.
VD VOLTAGE
10
V+ = 12V
V- = 0V
CL = 1nF
25
00
-20
-15 -10 0 10
VD (V)
15
-10
0
5
VD (V)
10
15
_______________________________________________________________________________________ 5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet DG445.PDF ] | |
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