TINA software + INA321 Testing error

LaunchRed

Prodigy 240 points

Other Parts Discussed in Thread: INA321

Hi, I am testing TINA with INA321:

The vout should be 5 X 1mv (GAIN X Difference input) = 5mV, but voud = 19,6mV.

What is wrong?

INA321 Datasheet: http://www.ti.com/lit/gpn/ina321

over 13 years ago

0 Pete%20Semig over 13 years ago

TI__Mastermind 25865 points

Hello LaunchRed,

The device is trying to output 5mV. With a single supply the output can only swing to within 25mV (typical) of ground according to the datasheet. Try biasing the REF pin with at least 50mV and your output will be 50mV+(gain*Vdiff).

0 LaunchRed over 13 years ago in reply to Pete%20Semig

Prodigy 240 points

I found what you said here (page 3):

What is "Output Voltage Swing from Rail"? I am a beginner

Thanks for the help!

0 LaunchRed over 13 years ago in reply to LaunchRed

Prodigy 240 points

I understand, the output swing is the range of output with respect to the power suply.

The output can be between 0+50 mV and VCC-50mV (single suply)

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TINA software + INA321 Testing error