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.
4
___________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600
© 1991 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.
DG308A/DG309
Quad, SPST Analog Switches
__________________________________________Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
500
0
0
DRAIN-SOURCE ON-RESISTANCE
vs. DRAIN VOLTAGE & POWER SUPPLIES
400
DG308A309 TOC01
V
D
(V)
r
DS(ON)
(Ω)
15
200
100
510
300
20
V+ = 5V
V+ = 10V
V+ = 15V
V+ = 20V
T
A
= +25°C
V- = GND
500
600
700
800
0
POWER-SUPPLY CURRENT
AND VOLTAGE vs. TEMPERATURE
400
DG308A309 TOC02
TEMPERATURE (°C)
I
SUPPLY
(nA)
200
100
300
-50 12525-25 0 7550 100
V+ = 44V
V+ = 30V
V+ = 5V
V+ = 10V
T
A
= +25°C
V- = GND
250
0
-15
DRAIN-SOURCE ON-RESISTANCE
vs. DRAIN VOLTAGE & POWER SUPPLIES
200
DG308A309 TOC04
V
D
(V)
r
DS(ON)
(Ω)
0
100
50
-10 -5
150
51015
V+ = ±5V
V+ = ±10V
V+ = ±12V
V+ = ±15V
T
A
= +25°C
-30
-12
LEAKAGE CURRENTS vs.
ANALOG VOLTAGE
10
20
DG308A309 TOC03
V
ANALOG
(V)
I
S
, I
D
(pA)
6
-10
-20
-6 0
0
12
T
A
= +25°C
V
CC
= ±15V
I
S(OFF)
I
D(OFF)
I
D(ON)
_____________________Pin Description
GroundGND5
No Connect. Not internally
connected.
N.C.12
Positive Supply Voltage Input.
Connected to substrate.
V+13
Negative Supply Voltage InputV-4
Source InputS1–S43, 6, 11, 14
PIN
Drain OutputD1–D42, 7, 10, 15
Logic Control InputsIN1–IN41, 8, 9, 16
FUNCTIONNAME
__________Applications Information
The DG308A/DG309 switch positive analog signals while
using a single positive supply, allowing use in applica-
tions where only one supply is available. The disadvan-
tages of using a single supply are slower switching
speed and increased r
DS(ON)
. The
Power-Supply
Current and Voltage vs. Temperature
graph shows the
typical curve for a single-supply design. As stated in the
Absolute Maximum Ratings, the analog voltage should
not go above or below the supply voltages, which are V+
and 0V in single-supply operation.
