Time ( s)

-10

0

10

20

30

40

50

60

70

-0.6

-3

-0.4

-2

-0.2

-1

0

0

0.2

1

0.4

2

0.6

3

0.8

4

1

5

1.2

6

Output

Enable

Figure 7-7. INA151 Enable/Disable Time

The EN pin is referenced to DGND. If left floating, the EN pin is internally pulled up to enable the device. For use

cases that require default disable mode use a pull-down resistor of maximum 150kΩ.

If externally controlled, the EN pin must be supplied with a voltage between DGND + 2V and DGND + 5V.

Due to internal clamping mechanism the DGND pin must be connected to valid operating ranges. Figure 7-8

depicts DGND ranges showing DGND valid ranges for three different power supply configuration use cases. If

the device is supplied with a dual power supply of ±10V, use case 1, DGND pin can to be connected between

−10V and 0V. If the device is supplied with a dual power supply of ±5V, use case 2, DGND pin can to be

connected between −5V and 2.3V. For single supply condition of +5V, DGND valid range is between 0V and

2.3V.

2.3V

10V

DGND Valid Ranges

5V

0V

Figure 7-8. INA151 DGND Valid Ranges

If the enable function is not used, connect a 47pF capacitor on EN to DGND.

8 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

www.ti.com

INA151

SLVSIL6C – JANUARY 2026 – REVISED APRIL 2026

Copyright © 2026 Texas Instruments Incorporated

Submit Document Feedback

21

Product Folder Links: INA151