INA186 datasheet(16/40 Pages) TI

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7.4.5 Shutdown

The INA186-Q1 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-Q1 goes to a high-impedance state when disabled. Figure 7-5 shows how to connect

multiple outputs of the INA186-Q1 together to a single ADC or measurement device.

When connected in this way, enable only one INA186-Q1 at a time, and make sure all devices have the same

supply voltage.

ADC

RSENSE

LOAD

Microcontroller

Bus Voltage1

upto to +40 V

ENABLE

(2)

OUT

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

OUT

REF

(1)

GND

IN+

IN±

0.1 F

Supply Voltage

1.7 V to 5.5 V

INA186-Q1

ENABLE

(2)

REF

(1)

(1) The REF pin is available in

SC70 and DDF packages

(2) The ENABLE pin is available

only in the DDF package.

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

INA186-Q1

SBOS386B – MAY 2019 – REVISED MARCH 2022

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