Datasheet

R
F
Op-Amp
Core
R
I
R
L
V
(1)
IN
I
D
-In
Out
+In
ESD Current-
Steering Diodes
Edge-Triggered ESD
Absorption Circuit
+V
S
+V
-V
-V
S
OPA166x
R
S
TVS
TVS
OPA1662
OPA1664
SBOS489 –DECEMBER 2011 www.ti.com
If there is an uncertainty about the ability of the The zener voltage must be selected such that the
supply to absorb this current, external zener diodes diode does not turn on during normal operation.
may be added to the supply pins as shown in However, its zener voltage should be low enough so
Figure 48. that the zener diode conducts if the supply pin begins
to rise above the safe operating supply voltage level.
(1) V
IN
= +V
S
+ 500mV.
Figure 48. Equivalent Internal ESD Circuitry and Its Relation to a Typical Circuit Application (Single
Channel Shown)
18 Copyright © 2011, Texas Instruments Incorporated
Product Folder Link(s): OPA1662 OPA1664