OPA2822UG4 Datasheet, PDF (23/33 Pages) Texas Instruments – Dual, Wideband, Low-Noise Operational Amplifier

well as a doubly-terminated line. If the input impedance of the
destination device is low, there will be some signal attenuation
due to the voltage divider formed by the series output into the
terminating impedance.
e) Socketing a high-speed part like the OPA2822 is not
recommended. The additional lead length and pin-to-pin ca-
pacitance introduced by the socket can create an extremely
troublesome parasitic network, which can make it almost impos-
sible to achieve a smooth, stable frequency response. Best
results are obtained by soldering the OPA2822 onto the board.
INPUT AND ESD PROTECTION
The OPA2822 is built using a very high-speed complementary
bipolar process. The internal junction breakdown voltages are
relatively low due to these very small geometry devices. These
breakdowns are reflected in the Absolute Maximum Rating
table. All device pins are protected with internal ESD protection
diodes to the power supplies, as shown in Figure 14.
+V_CC
External
Pin
Internal
Circuitry
–V _CC
FIGURE 14. Internl 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 cur-
rents are possible (for example, in systems with ±15V supply
parts driving into the OPA2822), current-limiting series resistors
should be added into the two inputs. Keep these resistor values
as low as possible since high values degrade both noise
performance and frequency response.
OPA2822
23
SBOS188E
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