DG212 Maxim, DG212 Datasheet - Page 6

• Manufacturer Part Number: DG212
• Description: The DG202/DG212 are normally open, quad single-pole single-throw (SPST) analog switches
• Manufacturer: Maxim

Quad SPST CMOS Analog Switches
Figure 1. Switching Time
Typical R
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.
6
TOP VIEW
POWER SUPPLIES
_______________________________________________________________________________________
Pin Configurations (continued)
±10V
±15V
±5V
GND
t r < 20ns
t f < 20ns
*EXPOSED PAD. CONNECT EXPOSED PAD TO V+
OUTPUT
OR LEAVE EXPOSED PAD UNCONNECTED.
SWITCH
SWITCH
S1
S4
V-
DS(ON)
LOGIC
INPUT
INPUT
1
2
3
4
3V
V
D1
D4
16
0
0
S
5
*EP
vs. Power Supplies for Maxim’s DG202, and DG212
IN1
IN4
15
6
TQFN*
DG202
DG212
50%
t
OFF
V
O
350Ω
LOGIC 1 SW ON
-5V
—
—
IN2
IN3
14
7
0.9
D2
D3
13
8
12
11
10
9
V
V
t
t
OFF1
OFF2
O
O
380Ω
+5V
S2
V+
N.C.
S3
—
—
0.9
0.1
R
SWITCH
DS(ON)
LOGIC
INPUT
INPUT
V
S
= +2V
165Ω
125Ω
-10V
AT ANALOG SIGNAL LEVEL
—
S
IN
Figure 2. Protection against Fault Conditions
1
1
-15V
0V
GND
IN4001
+10V
250Ω
160Ω
—
+15V
-15V
V+
V-
1
2
3
4
5
6
7
8
D
(REPEAT TEST FOR IN
1
DG202
DG212
R
1kΩ
L
V
135Ω
-15V
O
—
—
= V
SWITCH
OUTPUT
S
16
15
14
13
12
11
10
9
C
35pF
R
L
L
V
+
2
O
, IN
R
r
DS(ON)
L
3
IN4001
, AND IN
+15V
155Ω
4
)
—
—
+15V