INA190 datasheet(19/48 Pages) TI2

19 / 48 page

ADC

RSENS E

LOA D

Microco ntr oller

Bus Voltage1

upto to +40 V

ENABL E

OUT

REF

GND

IN+

IN±

RSENS E

LOA D

0.1 F

Sup ply Vo ltag e

1.7 V to 5.5 V

Bus Voltage2

upto to +40 V

GPIO1

GPIO2

ENABL E

OUT

REF

GND

IN+

IN±

0.1 F

Sup ply Vo ltag e

1.7 V to 5.5 V

INA190

www.ti.com

SBOS863D – MARCH 2018 – REVISED NOVEMBER 2019

Product Folder Links: INA190

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Device Functional Modes (continued)

7.4.5 Shutdown

The INA190 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 (typ), 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 INA190 goes to a high-impedance state when disabled. Therefore, you can connect multiple

outputs of the INA190 together to a single ADC or measurement device, as shown in Figure 38.

When connected in this way, enable only one INA190 at a time, and make sure all devices have the same supply

voltage.

Figure 38. Multiplexing Multiple Devices With the ENABLE Pin

INA190 데이터시트(PDF) 19 Page - Texas Instruments

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