INA186 datasheet(17/45 Pages) TI2

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7.4.5 Shutdown

The INA186 features an active-high ENABLE pin that shuts down the device when pulled to ground. When

the device is shut down, the quiescent current is reduced to 10 nA (typical), and the output goes to a high-

impedance state. In a battery-powered application, the low quiescent current extends the battery lifetime when

the current measurement is not needed. When the ENABLE pin is driven to the supply voltage, the device turns

back on. The typical output settling time when enabled is 130 µs.

The output of the INA186 goes to a high-impedance state when disabled. Figure 7-5 shows how to connect

multiple outputs of the INA186 together to a single ADC or measurement device.

When connected in this way, enable only one INA186 at a time, and make sure all devices have the same supply

voltage.

ADC

RSENSE

LOAD

Microcontroller

Bus Voltage1

upto to +40 V

ENABLE

OUT

REF

GND

IN+

IN±

RSENSE

LOAD

0.1 F

Supply Voltage

1.7 V to 5.5 V

Bus Voltage2

upto to +40 V

GPIO1

GPIO2

ENABLE

OUT

REF

GND

IN+

IN±

0.1 F

Supply Voltage

1.7 V to 5.5 V

INA186

Figure 7-5. Multiplexing Multiple Devices With the ENABLE Pin

www.ti.com

INA186

SBOS318B – APRIL 2019 – REVISED JULY 2021

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INA186 Datasheet(PDF) 17 Page - Texas Instruments

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