TL074 datasheet(20/39 Pages) TI2

20 / 39 page

500

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-10

-8

-6

-4

-2

OutputVoltage(V)

V = 12V

OUTPUTSHUTDOWNOUTPUTVOLTAGEvsOUTPUTCURRENT

OPA564

E/ =Low(OutputShutdown)

OUT

TestCircuit

1.6kW

6GW

120pF

V+

V-

OUT

External protection

diodes as needed

+IN

-IN

OPA564

SBOS372E

– OCTOBER 2008 – REVISED JANUARY 2011

www.ti.com

Ensuring Microcontroller Compatibility

within the optocoupler. A high logic level causes the

OPA564 to be enabled, and a low logic level shuts

Not all microcontrollers output the same logic state

the

OPA564

down.

the

configuration

after power-up or reset. 8051-type microcontrollers,

Figure 38(b), with the logic signal applied on the

for example, output logic high levels while other

anode side, a high level causes the OPA564 to shut

models power up with logic low levels after reset. In

down, and a low level enables the op amp.

the configuration of Figure 38(a), the shutdown signal

is applied on the cathode side of the photodiode

Figure 42. Output Shutdown Output Impedance

Figure 43. OPA564: Output Shutdown Equivalent Circuit (with External Feedback)

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Product Folder Link(s): OPA564

TL074 Datasheet(PDF) 20 Page - Texas Instruments

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