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OPA843 Fiches technique(PDF) 19 Page - Burr-Brown (TI)

[Old version datasheet] Texas Instruments acquired Burr-Brown Corporation. Click here to check the latest version.
No de pièce OPA843
Description  Wideband, Low Distortion, Medium Gain, Voltage-Feedback OPERATIONAL AMPLIFIER
Download  22 Pages
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Fabricant  BURR-BROWN [Burr-Brown (TI)]
Site Internet  http://www.burr-brown.com
Logo BURR-BROWN - Burr-Brown (TI)

OPA843 Fiches technique(HTML) 19 Page - Burr-Brown (TI)

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OPA843
19
SBOS268A
www.ti.com
INPUT AND ESD PROTECTION
The OPA843 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 protec-
tion diodes to the power supplies, as shown in Figure 16.
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 (e.g., in systems with
±15V supply parts
driving into the OPA843), 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. Figure 17 shows
one example of an overdrive protection circuit added to a
G = +5V/V design.
External
Pin
Internal
Cicuitry
+V
CC
–V
CC
OPA843
+5V
–5V
50
50
Power-supply
decoupling not shown.
125
D1
D2
R
G
126
50
R
F
505
V
O
D1 = D2 IN5911 (or equivalent)
50
Ω Source
FIGURE 17. Gain of +5 with Input Protection.
FIGURE 16. Internal ESD Protection.


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