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INA186A1IDDFT Scheda tecnica(PDF) 17 Page - Texas Instruments

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Il numero della parte INA186A1IDDFT
Spiegazioni elettronici  INA186 Bidirectional, Low-Power, Zero-Drift, Wide Dynamic Range, Current-Sense Amplifier With Enable
PDF  46 Pages
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Produttore elettronici  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

INA186A1IDDFT Scheda tecnica(HTML) 17 Page - Texas Instruments

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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
VS
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
VS
OUT
REF
GND
IN+
IN±
0.1 F
Supply Voltage
1.7 V to 5.5 V
INA186
INA186
Figure 7-5. Multiplexing Multiple Devices With the ENABLE Pin
www.ti.com
INA186
SBOS318B – APRIL 2019 – REVISED JULY 2021
Copyright © 2021 Texas Instruments Incorporated
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