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INA220: Definition of IQ

Wenhao Wu
Genius 9046 points
Part Number: INA220

Hi Team,

I am a little bit confused by datasheet specification.

Here it specified two current:

(1) Quiescent current, which is typ. 7mA

(2) Quiescent current in power down mode, which is typ 6uA

My question is 

1. Is quiescent current referring to current in normal operating mode?

2. What is spec of quiescent current for Vs=5V (both normal operating mode and power down mode)?

Thanks!

Wenhao

  • 0
    TI__Mastermind 27715 points

    Hi Wenhao,

    1. The quiescent current spec (typ 0.7 mA, max 1 mA) refers to normal operating mode. 
    2. The quiescent current, power-down mode spec (typ 6 µA, max 15 µA) refers to power-down mode as described in section 8.3.1 of the INA220 datasheet. In this mode, quiescent current is reduced and input bias current sources are turned off.

    Both of these specs apply for the whole power supply range of 3 V to 5.5 V.

    If this answered your question, please click the green button "This resolved my issue." Thanks!

    Best regards,

    Ian Williams
    Applications Manager
    Current & Magnetic Sensing