DG202_06 Datasheet, PDF (6/12 Pages) Maxim Integrated Products – Quad SPST CMOS Analog Switches

Quad SPST CMOS Analog Switches
LOGIC
INPUT
3V
tr < 20ns
tf < 20ns ₀
SWITCH
INPUT V_S
SWITCH ₀
OUTPUT
LOGIC 1 SW ON
50%
V_O 0.9
t_OFF
SWITCH
INPUT
V_S = +2V ^S1
V_O 0.9
LOGIC
INPUT ^IN1
V_O
0.1
t_OFF1
t_OFF2
GND
0V
+15V
V+
D₁
V_O = V_S
R_L
R_L + r_DS(ON)
SWITCH
OUTPUT
V_O
R_L
C_L
1kΩ 35pF
V- _{(REPEAT TEST FOR IN2, IN3, AND IN4)}
-15V
Figure 1. Switching Time
Typical R_DS(ON) vs. Power Supplies for Maxim’s DG202, and DG212
POWER SUPPLIES
±5V
±10V
±15V
-5V
350Ω
—
—
+5V
380Ω
—
—
R_DS(ON) AT ANALOG SIGNAL LEVEL
-10V
+10V
—
—
165Ω
250Ω
125Ω
160Ω
-15V
—
—
135Ω
+15V
—
—
155Ω
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.
Pin Configurations (continued)
1
16
2
15
IN4001
3
14
IN4001
-15V
4
DG202
13
+15V
DG212
5
12
6
11
7
10
8
9
TOP VIEW
D1 IN1 IN2 D2
16 15 14 13
Figure 2. Protection against Fault Conditions
S1 1
12 S2
V- 2
GND 3
S4 4
DG202
DG212
*EP
11 V+
10 N.C.
9 S3
5
6
7
8
D4 IN4 IN3 D3
TQFN*
*EXPOSED PAD. CONNECT EXPOSED PAD TO V+
OR LEAVE EXPOSED PAD UNCONNECTED.
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