19-3926; Rev 0; 3/91
Quad, SPST Analog Switches
_______________General Description
The DG308A/DG309 are quad, single-pole-single-throw (SPST) analog switches. The DG308A is normally open (SPST, NO), while the DG309 is normally closed (SPST, NC). Both parts feature fast switching speeds and low onresistance over the analog range. Other features include a turn-on time under 120ns, a turn-off time under 90ns, and a channel on-resistance of 60Ω . CMOS inputs provide reduced input loading and very low leakage currents.
Both parts feature a 44V maximum breakdown voltage rating that allows 30V peak-to-peak switch-off blocking capacity. The DG308A/DG309 can be used with split supplies (±5V to ±20V) or a single positive supply (+5V to +30V), while retaining CMOS-logic-compatible inputs.
________________________Applications
Sample-and-Hold Circuits
Test Equipment
Communications Systems
PBX, PABX
Guidance and Control Systems
Heads-Up Displays
Military Radios
____________________________Features
♦60Ω rDS(ON)
♦Single/Bipolar-Supply Operation
♦CMOS Logic Compatible
♦Monolithic, Low-Power CMOS Design
______________Ordering Information
PART |
TEMP. RANGE |
PIN-PACKAGE |
DG308ACJ |
0°C to +70°C |
16 Plastic DIP |
DG308ACY |
0°C to +70°C |
16 Narrow SO |
DG308ACK |
0°C to +70°C |
16 CERDIP |
DG308AC/D |
0°C to +70°C |
Dice* |
DG308ADJ |
-40°C to +85°C |
16 Plastic DIP |
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DG308ADY |
-40°C to +85°C |
16 Narrow SO |
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DG308ADK |
-40°C to +85°C |
16 CERDIP |
DG308AAK |
-55°C to +125°C |
16 CERDIP** |
DG309CJ |
0°C to +70°C |
16 Plastic DIP |
DG309CY |
0°C to +70°C |
16 Narrow SO |
DG309CK |
0°C to +70°C |
16 CERDIP |
DG309C/D |
0°C to +70°C |
Dice* |
DG309DJ |
-40°C to +85°C |
16 Plastic DIP |
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DG309DY |
-40°C to +85°C |
16 Narrow SO |
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DG309DK |
-40°C to +85°C |
16 CERDIP |
DG309AK |
-55°C to +125°C |
16 CERDIP** |
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
__________Typical Operating Circuit |
______Pin Configuration/Truth Table |
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TOP VIEW |
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IN2 |
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1 |
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16 |
5k |
IN1 |
1 |
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16 |
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5k * |
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VIN ±10V |
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* 40k |
D1 |
2 |
DG308A |
15 |
D2 |
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2 |
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15 |
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S1 |
3 |
14 |
S2 |
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3 |
DG308A |
14 |
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DG309 |
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DG309 |
VOUT |
V- |
4 |
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13 |
V+ (SUBSTRATE) |
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-15V |
4 |
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13 |
+15V |
GND |
5 |
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12 |
N.C. |
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5 |
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12 |
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S4 |
6 |
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11 |
S3 |
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6 |
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11 |
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10k |
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20k |
D4 |
7 |
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10 |
D3 |
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7 |
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10 |
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IN4 |
8 |
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9 |
IN3 |
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8 |
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9 |
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DIP/SO |
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TRUTH TABLE |
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PROGRAMMABLE-GAIN AMPLIFIER |
LOGIC |
DG308A |
DG309 |
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0 |
OFF |
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ON |
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* PINS 1, 8, 9, AND 16 ARE LOGIC-CONTROL INPUTS. |
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1 |
ON |
OFF |
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________________________________________________________________ Maxim Integrated Products 1
DG308A/DG309
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
DG308A/DG309
Quad, SPST Analog Switches
ABSOLUTE MAXIMUM RATINGS
Voltage Referenced to V- |
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Continuous Power Dissipation (TA = +70°C) (Note 1) |
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V+ .................................................................................... |
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+44V |
Plastic DIP (derate 10.53mW/°C above +70°C) |
............842mW |
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GND ................................................................................. |
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+25V |
Narrow SO (derate 8.70mW/°C above +70°C) ............. |
696mW |
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Digital Inputs VS, VD................ |
(V- - 2V) to (V+ + 2V) or 20mA, |
CERDIP (derate 10.00mW/°C above +70°C) |
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800mW |
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whichever occurs first |
Operating Temperature Ranges |
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Current into Any Terminal (except S or D) |
..........................30mA |
DG308AC_/DG309C_ ......................................... |
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0°C to +70°C |
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Continuous Current (S or D)................................................ |
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20mA |
DG308AD_/DG309D_...................................... |
- 40°C to +85°C |
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Peak Current (S or D) |
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DG308AAK/DG309AK ................................... |
- 55°C to +125°C |
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(pulsed at 1ms, 10% duty cycle max) ............................ |
70mA |
Storage Temperature Range ............................. |
- 65°C to +150°C |
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Lead Temperature (soldering, 10sec) ............................. |
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+300°C |
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
(V+ = 15V, V- = -15V, TA = TMIN to TMAX, unless otherwise noted.) (Note 2)
PARAMETER |
SYMBOL |
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CONDITIONS |
DG30_AK |
DG30_C/D |
UNITS |
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MIN |
TYP |
MAX |
MIN |
TYP |
MAX |
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SWITCH |
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Analog Signal Range |
VANALOG |
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TA = +25°C |
-15 |
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15 |
-15 |
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15 |
V |
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Drain-Source |
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VIN = 11V (DG308A), |
TA = +25°C, |
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60 |
100 |
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60 |
100 |
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rDS(ON) |
VIN = 3.5V (DG309), |
TMIN |
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Ω |
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On-Resistance |
IS = 1mA, |
TA = TMAX |
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95 |
150 |
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80 |
125 |
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VD = 10V or -10V |
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VIN = 3.5V (DG308A), |
TA = +25°C |
-1 |
0.1 |
1 |
-5 |
0.1 |
5 |
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VIN = 11V (DG309), |
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TA = TMAX |
-100 |
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100 |
-100 |
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100 |
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Source-Off |
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V |
= 14V, V = -14V |
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IS(OFF) |
S |
D |
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nA |
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Leakage Current |
VIN = 3.5V (DG308A), |
TA = +25°C |
-1 |
-0.1 |
1 |
-5 |
0.1 |
5 |
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VIN = 11V (DG309), |
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TA = TMAX |
-100 |
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100 |
-100 |
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100 |
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VS = -14V, VD = 14V |
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VIN = 3.5V (DG308A), |
TA = +25°C |
-1 |
0.1 |
1 |
-5 |
0.1 |
5 |
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VIN = 11V (DG309), |
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TA = TMAX |
-100 |
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100 |
-100 |
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100 |
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Drain-Off |
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= 14V, V = -14V |
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ID(OFF) |
S |
D |
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nA |
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Leakage Current |
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VIN = 3.5V (DG308A), |
TA = +25°C |
-1 |
0.1 |
1 |
-5 |
0.1 |
5 |
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VIN = 11V (DG309), |
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TA = TMAX |
-100 |
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100 |
-100 |
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100 |
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VS = -14V, VD = 14V |
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VIN =11V (DG308A), |
TA = +25°C |
-2 |
0.1 |
2 |
-5 |
0.1 |
5 |
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VIN = 3.5V (DG309), |
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TA = TMAX |
-200 |
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200 |
-200 |
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200 |
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Drain-On |
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V |
= V = +14V |
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ID(ON) |
S |
D |
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nA |
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Leakage Current |
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VIN = 11V (DG308A), |
TA = +25°C |
-2 |
0.1 |
2 |
-5 |
0.1 |
5 |
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VIN = 3.5V (DG309), |
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TA = TMAX |
-200 |
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200 |
-200 |
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200 |
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VS = VD = -14V |
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INPUT |
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Input Current with |
IINH |
VIN = 15V |
TA = +25°C, |
-1 |
0.001 |
1 |
-1 |
0.001 |
1 |
µA |
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Input Voltage High |
TMAX |
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Input Current with |
IINL |
VIN = 0V |
TA = +25°C, |
-1 |
-0.001 |
1 |
-1 |
0.001 |
1 |
µA |
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Input Voltage Low |
TMAX |
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2 _______________________________________________________________________________________