INPUT AND ESD PROTECTION

External

Pin

+V

CC

Internal

Circuitry

OPA2673

e) Socketing a high-speed part such as the

These diodes provide moderate protection to input

OPA2673 is not recommended. The additional lead

overdrive voltages above the supplies as well. The

length and pin-to-pin capacitance introduced by the

protection

diodes

can

typically

support

30mA

socket can create an extremely troublesome parasitic

continuous

current.

Where

higher

currents

are

network, which can make it almost impossible to

possible (for example, in systems with ±15V supply

achieve a smooth, stable frequency response. Best

parts driving into the OPA2673), current-limiting

results are obtained by soldering the OPA2673

series resistors should be added into the two inputs.

directly onto the board.

Keep these resistor values as low as possible,

because high values degrade both noise performance

and frequency response.

The

OPA2673

is

built

using

a

high-speed

complementary bipolar process. The internal junction

breakdown voltages are relatively low for these very

small geometry devices and are reflected in the

Absolute Maximum Ratings table. All device pins

have limited ESD protection using internal diodes to

the power supplies, as shown in Figure 87.

Figure 87. ESD Steering Diodes

empty for space

empty for space

empty for space

empty for space

Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

• Corrected y-axis units specified for Open-Loop Transimpedance Gain and Phase characteristic graph (Figure 15) .......... 8

• Changed equation references in paragraph discussing transfer equation and loop-gain analysis format.......................... 26

32

Submit Documentation Feedback

Copyright © 2008, Texas Instruments Incorporated

Product Folder Link(s): OPA2673