Im p ro ve d , Du a l, Hig h -S p e e d An a lo g S w it c h e s
__________Ap p lic a t io n s In fo rm a t io n
_____________________P in De s c rip t io n
DG401
Op e ra t io n w it h S u p p ly Vo lt a g e s
Ot h e r t h a n ±1 5 V
NAME
D1, D2 Drain (Analog Signal)
N.C. Not internally connected
FUNCTION
DIP/SO
LCC
The DG401/DG403/DG405 s witc he s op e ra te with
±4.5V to ±20V bipolar supplies or with a +10V to +30V
single supply. In either case, analog signals ranging
from V+ to V- can be switched. The Typical Operating
Characteristics graphs illustrate typical analog-signal
and supply-voltage on-resistance variations. The usual
on-resistance temperature coefficient is 0.5%/°C (typ).
1, 8
2, 10
1, 3-9,
11, 16
2-7
9, 16
12, 20
13, 19
S2, S1 Source (Analog Signal)
IN2, IN1 Digital Logic Inputs
Positive Supply-Voltage
10, 15
11
14
V+
Input—connected to
substrate
Lo g ic In p u t s
These devices operate with a single positive supply or
with bipolar supplies. They maintain TTL compatibility
with supplies anywhere in the ±4.5V to ±20V range as
12
13
15
17
V
L
Logic Supply-Voltage Input
Ground
GND
long as V = +5V. If V is connected to V+ or another
L
L
Negative Supply-Voltage
Input
supply at voltages other than +5V, the devices will
operate at CMOS-logic-level inputs.
14
18
V-
DG403
DIP/SO
NAME
FUNCTION
Ove rvo lt a g e P ro t e c t io n
Proper power-supply sequencing is recommended for
a ll CMOS d e vic e s . Do not e xc e e d the a b s olute
maximum ratings because stresses beyond the listed
ratings may cause permanent damage to the devices.
LCC
1, 8, 3, 6 2, 10, 4, 8 D1-D4 Drain (Analog Signal)
1, 3, 6, 9,
2, 7
N.C.
Not internally connected
11, 16
Always sequence V+ on first, followed by V , V-, and
L
20, 12,
5, 7,
16, 9, 4, 5
10, 15
S1-S4 Source (Analog Signal)
log ic inp uts . If p owe r-s up p ly s e q ue nc ing is not
p os s ib le , a d d two s ma ll, e xte rna l s ig na l d iod e s in
s e rie s with s up p ly p ins for ove rvolta g e p rote c tion
(Figure 1). Adding diodes reduces the analog-signal
range to 1V below V+ and 1V below V-, without affect-
ing low s witc h re s is ta nc e a nd low le a ka g e
characteristics. Device operation is unchanged, and
the difference between V+ and V- should not exceed
+44V.
13, 19
IN2, IN1 Digital Logic Inputs
Positive Supply-Voltage
11
14
V+
Input—connected to
substrate
12
13
15
17
V
Logic Supply-Voltage Input
Ground
L
GND
Negative Supply-Voltage
Input
14
18
V-
DG405
DIP/SO
V+
NAME
FUNCTION
LCC
1, 8, 3, 6 2, 10, 4, 8 D1-D4 Drain (Analog Signal)
1, 3, 6, 9,
2, 7
N.C.
Not internally connected
11, 16
20, 12,
5, 7,
S
D
16, 9, 4, 5
10, 15
S1-S4 Source (Analog Signal)
13, 19
IN2, IN1 Digital Logic Inputs
Positive Supply-Voltage
V
g
11
14
V+
Input—connected to
substrate
12
13
14
15
17
18
V
Logic Supply-Voltage Input
Ground
L
V-
GND
V-
Negative Supply Voltage
Figure 1. Overvoltage Protection Using External Blocking Diodes
_______________________________________________________________________________________
5
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
