Datasheet

DG202/DG212
Quad SPST CMOS Analog Switches
6 _______________________________________________________________________________________
R
DS(ON)
AT ANALOG SIGNAL LEVEL
POWER SUPPLIES
-5V +5V -10V +10V -15V +15V
±5V 350Ω 380Ω ————
±10V — — 165Ω 250Ω ——
±15V — — 125Ω 160Ω 135Ω 155Ω
Typical R
DS(ON)
vs. Power Supplies for Maxim’s DG202, and DG212
this current is required to be kept to low (µA) levels
then the addition of external protection diodes is rec-
ommended.
To provide protection for overvoltages up to 20V above
the supplies, a 1N4001 or 1N914 type diode should be
placed in series with the positive and negative supplies
as shown in Figure 2. The addition of these diodes will
reduce the analog signal range to 1V below the posi-
tive supply and 1V above the negative supply.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
DG202
DG212
IN4001
-15V
IN4001
+15V
Figure 2. Protection against Fault Conditions
V
O
V
O
t
OFF1
t
OFF
t
OFF2
V
S
= +2V
R
L
1kΩ
D
1
S
1
IN
1
C
L
35pF
V-
V
O
50%
3V
0
V
S
0
V+
GND
0.9
0.1
0.9V
O
LOGIC
INPUT
SWITCH
INPUT
SWITCH
OUTPUT
t
r
< 20ns
t
f
< 20ns
LOGIC 1 SW ON
SWITCH
INPUT
V
O
= V
S
LOGIC
INPUT
0V
-15V
+15V
(REPEAT TEST FOR IN
2
, IN
3
, AND IN
4
)
SWITCH
OUTPUT
R
L
R
L
+ r
DS(ON)
TOP VIEW
16 15 14 13
5
1
2
3
4
12
11
10
9
678
S1
V-
GND
S4
S2
V+
N.C.
S3
D1 IN1 IN2 D2
D4 IN4 IN3 D3
DG202
DG212
TQFN*
*EP
*EXPOSED PAD. CONNECT EXPOSED PAD TO V+
OR LEAVE EXPOSED PAD UNCONNECTED.
Pin Configurations (continued)
Figure 1. Switching Time