OPA3695_14 Datasheet, PDF (22/39 Pages) Texas Instruments – Triple, Ultra-Wideband, Current-Feedback OPERATIONAL AMPLIFIER with Disable

OPA3695
SBOS355A – APRIL 2008 – REVISED SEPTEMBER 2008 ............................................................................................................................................... www.ti.com
e) Socketing a high-speed part such as the
OPA3695 is not recommended. The additional lead
+V_CC
length and pin-to-pin capacitance introduced by the
socket can create an extremely troublesome parasitic
network, which can make it almost impossible to
External
Pin
achieve a smooth, stable frequency response. Best
results are obtained by soldering the OPA3695
directly onto the board.
-V_CC
Internal
Circuitry
INPUT AND ESD PROTECTION
The OPA3695 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 45.
Figure 45. Internal ESD Protection
These diodes provide moderate protection to input
overdrive voltages above the supplies as well. The
protection diodes can typically support 30mA
continuous current. Where higher currents are
possible (for example, in systems with ±15V supply
parts driving into the OPA3695), current limiting
series resistors may be added on the noninverting
input. Keep this resistor value as low as possible;
high values degrade both noise performance and
frequency response.
22
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