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 guaranteed on-resistance matching (3Ω max) between switches and guaranteed on-resistance flatness over the signal range (4Ω max). 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 temperature (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.
______________________New Features
♦Plug-In Upgrades for Industry-Standard DG417/DG418/DG419
♦Improved RDS(ON) Match Between Channels (3Ω max, DG419 only)
♦Guaranteed RFLAT(ON) Over Signal Range (4Ω max)
♦Improved Charge Injection (10pC max)
♦Improved Off-Leakage Current Over Temperature (<5nA at +85°C)
♦Withstand Electrostatic Discharge (2000V min) per Method 3015.7
__________________Existing Features
♦Low RDS(ON) (35Ω max)
♦Single-Supply Operation +10V to +30V Bipolar-Supply Operation ±4.5V to ±20V
♦Low Power Consumption (35µW max)
♦Rail-to-Rail Signal Handling
♦TTL/CMOS-Logic Compatible
________________________Applications
Sample-and-Hold Circuits |
Communications Systems |
Test Equipment |
Battery-Operated Systems |
Modems |
Fax Machines |
Guidance and Control Systems |
PBX, PABX |
Audio Signal Routing |
Military Radios |
______________Ordering Information
PART |
TEMP. RANGE |
PIN-PACKAGE |
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DG417CJ |
0°C to +70°C |
8 Plastic DIP |
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DG417CY |
0°C to +70°C |
8 SO |
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DG417C/D |
0°C to +70°C |
Dice* |
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DG417DJ |
-40°C to +85°C |
8 Plastic DIP |
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DG417DY |
-40°C to +85°C |
8 SO |
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Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
_____________________Pin Configurations/Functional Diagrams/Truth Tables
TOP VIEW
S |
1 |
8 |
D |
N.C. 2 |
7 |
V- |
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GND |
3 |
6 |
IN |
V+ |
4 |
5 |
VL |
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DG417 |
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DIP/SO |
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DG417 |
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LOGIC |
SWITCH |
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0 |
ON |
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1 |
OFF |
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N.C. = NO INTERNAL CONNECTION
S |
1 |
8 |
D |
N.C. 2 |
7 |
V- |
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GND |
3 |
6 |
IN |
V+ |
4 |
5 |
VL |
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DG418 |
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DIP/SO |
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DG418 |
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LOGIC |
SWITCH |
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0 |
OFF |
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1 |
ON |
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SWITCHES SHOWN FOR LOGIC "0" INPUT
D |
1 |
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8 |
S2 |
S1 |
2 |
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7 |
V- |
GND |
3 |
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6 |
IN |
V+ |
4 |
DG419 |
5 |
VL |
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DIP/SO |
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DG419 |
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LOGIC |
SWITCH 1 |
SWITCH 2 |
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0 |
ON |
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OFF |
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1 |
OFF |
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ON |
________________________________________________________________ Maxim Integrated Products 1
DG417/DG418/DG419
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
Improved, SPST/SPDT Analog Switches
DG417/DG418/DG419
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to V- |
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V+ ....................................................................................... |
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44V |
GND.................................................................................... |
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25V |
VL .................................................. |
(GND - 0.3V) to (V+ + 0.3V) |
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Digital Inputs VS, VD (Note 1) ......... |
(V- - 2V) to (V+ + 2V) or 30mA |
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(whichever occurs first) |
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Continuous Current (any terminal) (Note 1) ........................ |
30mA |
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Peak Current, S or D (pulsed at 1ms, 10% duty cycle max).. |
100mA |
Continuous Power Dissipation (TA = +70°C) |
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Plastic DIP (derate 9.09mW/°C above +70°C) |
.............727mW |
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SO (derate 5.88mW/°C above +70°C).......................... |
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471mW |
CERDIP (derate 8.00mW/°C above +70°C).................. |
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640mW |
Operating Temperature Ranges |
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DG41_C_ ............................................................. |
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0°C to +70°C |
DG41_D_ .......................................................... |
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- 40°C to +85°C |
DG41_AK........................................................ |
-55°C to +125°C |
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Storage Temperature Range ............................. |
-65°C to +150°C |
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Lead Temperature (soldering, 10sec) ............................. |
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+300°C |
Note 1: Signals on S, D, or IN exceeding V+ or V- are clamped by internal diodes. Limit forward current to maximum current ratings.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS—Dual Supplies |
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(V+ = +15V, V- = -15V, VL = 5V, GND = 0V, VINL = 0.8V, VINH = 2.4V, TA = TMIN to TMAX, unless otherwise noted.) |
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PARAMETER |
SYMBOL |
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CONDITIONS |
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MIN |
TYP |
MAX |
UNITS |
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(Note 2) |
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SWITCH |
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Analog Signal Range |
VS_, VD |
(Note 3) |
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-15 |
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15 |
V |
Drain-Source |
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V+ = 13.5V, V- = -13.5V, |
T = +25°C |
C, D |
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20 |
35 |
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RDS(ON) |
VD = ±10V, |
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A |
A |
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20 |
30 |
Ω |
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On-Resistance |
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IS = -10mA |
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TA = TMIN to TMAX |
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45 |
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On-Resistance Match |
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V+ = 15V, V- = -15V, |
TA = +25°C |
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3 |
Ω |
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Between Channels |
RDS(ON) |
VD = ±10V, |
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TA = TMIN to TMAX |
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4 |
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(Note 4) |
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IS = -10mA |
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On-Resistance Flatness |
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V+ = 15V, V- = -15V, |
TA = +25°C |
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4 |
Ω |
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RFLAT(ON) |
VD = ±5V, |
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(Note 4) |
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TA = TMIN to TMAX |
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6 |
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IS = -10mA |
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Source-Off |
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V+ = 16.5V, V- = -16.5V, |
TA = +25°C |
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-0.25 |
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0.25 |
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Leakage Current |
IS(OFF) |
VD = ±15.5V, |
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TA = TMIN to |
C, D |
-5 |
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5 |
nA |
(Note 5) |
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VS = ±15.5V |
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T |
A |
-20 |
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20 |
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MAX |
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DG417/ |
TA = +25°C |
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-0.25 |
0.1 |
0.25 |
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TA = TMIN to |
C, D |
-5 |
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5 |
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Drain-Off |
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V+ = 16.5V, |
DG418 |
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TMAX |
A |
-20 |
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20 |
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V- = -16.5V, |
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Leakage Current |
ID(OFF) |
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nA |
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VD = ±15.5V, |
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TA = +25°C |
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-0.75 |
-0.1 |
0.75 |
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(Note 5) |
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VS = ±15.5V |
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DG419 |
TA = TMIN to |
C, D |
-10 |
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10 |
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TMAX |
A |
-40 |
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40 |
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DG417/ |
TA = +25°C |
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-0.4 |
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0.4 |
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TA = TMIN to |
C, D |
-10 |
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10 |
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Drain-On |
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V+ = 16.5V, |
DG418 |
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TMAX |
A |
-40 |
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40 |
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V- = -16.5V, |
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Leakage Current |
ID(ON) |
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nA |
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VD = ±15.5V, |
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TA = +25°C |
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-0.75 |
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0.75 |
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(Note 5) |
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VS = ±15.5V |
DG419 |
TA = TMIN to |
C, D |
-10 |
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10 |
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TMAX |
A |
-40 |
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40 |
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2 _______________________________________________________________________________________
Improved, SPST/SPDT Analog Switches
ELECTRICAL CHARACTERISTICS—Dual Supplies (continued)
(V+ = +15V, V- = -15V, VL = 5V, GND = 0V, VINL = 0.8V, VINH = 2.4V, TA = TMIN to TMAX, unless otherwise noted.)
PARAMETER |
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SYMBOL |
CONDITIONS |
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MIN |
TYP |
MAX |
UNITS |
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(Note 2) |
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LOGIC INPUT |
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Logic Input Current with |
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IINH |
VIN = 2.4V |
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-0.5 |
0.005 |
0.5 |
µA |
Input Voltage High |
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Logic Input Current with |
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IINL |
VIN = 0.8V |
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-0.5 |
0.005 |
0.5 |
µA |
Input Voltage Low |
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DYNAMIC |
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Turn-On Time |
tON |
DG417/DG418, |
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TA = +25°C |
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100 |
175 |
ns |
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VD = ±10V, Figure 2 |
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TA = TMIN to TMAX |
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250 |
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Turn-Off Time |
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tOFF |
DG417/DG418, |
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TA = +25°C |
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60 |
145 |
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VD = ±10V, Figure 2 |
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TA = TMIN to TMAX |
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210 |
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Transition Time |
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tTRANS |
DG419, |
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TA = +25°C |
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175 |
ns |
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VS = ±10V, Figure 3 |
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TA = TMIN to TMAX |
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250 |
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Break-Before-Make |
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tD |
DG419, VS1 = VS2 = ±10V, Figure 4, TA = +25°C |
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13 |
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Interval |
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Charge Injection (Note 3) |
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Q |
VGEN = 0V, Figure 5, TA = +25°C |
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3 |
10 |
pC |
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Off-Isolation |
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OIRR |
RL = 500Ω , CL = 5pF, f = 1MHz, Figure 6, TA = +25°C |
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68 |
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dB |
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Rejection Ratio (Note 6) |
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Crosstalk (Note 7) |
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DG419, RL = 50Ω , CL = 5pF, f = 1MHz, Figure 7, |
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85 |
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dB |
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TA = +25°C |
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Drain Off-Capacitance |
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CD (OFF) |
VD = 0V, f = 1MHz, Figure 8, TA = +25°C |
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8 |
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pF |
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Source Off-Capacitance |
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CS (OFF) |
VD = 0V, f = 1MHz, Figure 8, TA = +25°C |
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8 |
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pF |
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Drain-Source |
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CD (ON) |
VS = 0V, f = 1MHz, |
DG417/DG418 |
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30 |
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or |
Figure 9, |
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pF |
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On-Capacitance |
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CS (ON) |
TA = +25°C |
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DG419 |
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35 |
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SUPPLY |
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Positive Supply Current |
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I+ |
V+ = 16.5V, V- = -16.5V, |
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TA = +25°C |
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-1 |
-0.0001 |
1 |
µA |
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VIN = 0V or 5V |
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TA = TMIN to TMAX |
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-5 |
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5 |
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Negative Supply Current |
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I- |
V+ = 16.5V, V- = -16.5V, |
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TA = +25°C |
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-1 |
-0.0001 |
1 |
µA |
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VIN = 0V or 5V |
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TA = TMIN to TMAX |
-5 |
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5 |
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Logic Supply Current |
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IL |
V+ = 16.5V, V- = -16.5V, |
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TA = +25°C |
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-1 |
-0.0001 |
1 |
µA |
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VIN = 0V or 5V |
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TA = TMIN to TMAX |
-5 |
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5 |
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Ground Current |
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IGND |
V+ = 16.5V, V- = -16.5V, |
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TA = +25°C |
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-1 |
-0.0001 |
1 |
µA |
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VIN = 0V or 5V |
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TA = TMIN to TMAX |
-5 |
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5 |
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DG417/DG418/DG419
_______________________________________________________________________________________ 3
DG417/DG418/DG419
Improved, SPST/SPDT Analog Switches
ELECTRICAL CHARACTERISTICS—Single Supply
(V+ = +12V, V- = 0V, VL = 5V, GND = 0V, VINH = 2.4V, VINL = 0.8V, TA = +25°C, unless otherwise noted.)
PARAMETER |
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SYMBOL |
CONDITIONS |
MIN |
TYP |
MAX |
UNITS |
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(Note 2) |
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SWITCH |
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Analog Signal Range |
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VANALOG |
(Note 3) |
0 |
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12 |
V |
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Drain-Source On-Resistance |
RDS(ON) |
IS = -10mA, VD = 3.8V, V+ = 10.8V |
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40 |
100 |
Ω |
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DYNAMIC |
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Turn-On Time |
tON |
DG417/DG418, VD = 8V, Figure 2 |
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110 |
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ns |
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Turn-Off Time |
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tOFF |
DG417/DG418, VD = 8V, Figure 2 |
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40 |
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ns |
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Break-Before-Make Interval |
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tD |
DG419, RL = 1000Ω , CL = 35pF, Figure 4 |
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60 |
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ns |
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Charge Injection (Note 3) |
Q |
CL = 10nF, VGEN = 0V, RGEN = 0V, Figure 5 |
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2 |
10 |
pC |
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SUPPLY |
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Positive Supply Current |
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I+ |
All channels on or off, V+ = 13.2V, |
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-0.0001 |
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µA |
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VL = 5.25V, VIN = 0V or 5V |
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Negative Supply Current |
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I- |
All channels on or off, V+ = 13.2V, |
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-0.0001 |
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µA |
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VL = 5.25V, VIN = 0V or 5V |
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Logic Supply Current |
IL |
All channels on or off, VL = 5.25V, |
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-0.0001 |
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µA |
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VIN = 0V or 5V |
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Ground Current |
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IGND |
All channels on or off, VL = 5.25V, |
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-0.0001 |
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µA |
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VIN = 0V or 5V |
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Note 2: Typical values are for design aid only, are not guaranteed, and are not subject to production testing. The algebraic convention where the most negative value is a minimum and the most positive value a maximum is used in this data sheet.
Note 3: Guaranteed by design.
Note 4: On-resistance match between channels and flatness is guaranteed only with bipolar-supply operation. Flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured at the extremes of the specified analog range.
Note 5: Leakage parameters IS(OFF), ID(OFF), and ID(ON) are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25°C.
Note 6: Off-Isolation Rejection Ratio = 20log (VD/VS), VD = output, VS = input to off switch.
Note 7: Between any two switches.
4 _______________________________________________________________________________________