OPA145IDBVT datasheet(21/43 Pages) TI1

Part #	OPA145IDBVT

Description	OPAx145 High-Precision, Low-Noise, Rail-to-Rail Output, 5.5-MHz JFET Operational Amplifiers

PDF	43 Pages

Scroll/Zoom	100%

Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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21 / 43 page

Op Amp

Core

(1)

-In

Out

+In

ESD Current-

Steering Diodes

Edge-Triggered ESD

Absorption Circuit

-V

(3)

TVS

(2)

TVS

(2)

OPA145, OPA2145

www.ti.com

SBOS427D – JUNE 2017 – REVISED JUNE 2020

Product Folder Links: OPA145 OPA2145

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Feature Description (continued)

If there is an uncertainty about the ability of the supply to absorb this current, external Zener diodes may be

added to the supply pins as shown in Figure 41. The Zener voltage must be selected so that the diode does not

turn on during normal operation. However, the Zener voltage must be low enough so that the Zener diode

conducts if the supply pin begins to rise above the safe operating supply voltage level.

(1)

VIN = +VS + 500 mV.

(2)

TVS: +VS(max) > VTVSBR (Min) > +VS

(3)

Suggested value approximately 1 kΩ.

Figure 41. Equivalent Internal ESD Circuitry Relative to a Typical Circuit Application

OPA145IDBVT Datasheet(PDF) 21 Page - Texas Instruments