Datasheet

INPUT AND ESD PROTECTION
External
Pin
+V
CC
-V
CC
Internal
Circuitry
OPA2889
SBOS373B – JUNE 2007 – REVISED AUGUST 2008 ....................................................................................................................................................... www.ti.com
e) Socketing a high-speed part like the OPA2889 protection diodes can typically support 30mA
is not recommended. The additional lead length and continuous current. Where higher currents are
pin-to-pin capacitance introduced by the socket can possible (for example, in systems with ± 15V supply
create an extremely troublesome parasitic network parts driving into the OPA2889), current-limiting
that can make it almost impossible to achieve a series resistors should be added into the two inputs.
smooth, stable frequency response. Best results are Keep these resistor values as low as possible since
obtained by soldering the OPA2889 onto the board. high values degrade both noise performance and
frequency response.
The OPA2889 is built using a very high-speed
complementary bipolar process. The internal junction
breakdown voltages are relatively low for these very
small geometry devices. These breakdowns are
reflected in the Absolute Maximum Ratings table. All
device pins are protected with internal ESD protection
diodes to the power supplies, as shown in Figure 64 .
These diodes provide moderate protection to input
Figure 64. Internal ESD Protection
overdrive voltages above the supplies as well. The
28 Submit Documentation Feedback Copyright © 2007 – 2008, Texas Instruments Incorporated
Product Folder Link(s): OPA2889