INA701 datasheet(20/47 Pages) TI2

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• Alert polarity — Allows the device to invert the active state of the ALERT pin. Note that the ALERT pin is an

open-drain output that must be pulled up by a resistor. The ALERT pin is active-low by default and can be

configured for active high function using the APOL control bit.

Other diagnostic functions that are not reported by the ALERT pin but are available by reading the ALERT_DIAG

• Math overflow — Indicated by the MATHOF bit, reports when an arithmetic operation has caused an internal

• Memory status — Indicated by the MEMSTAT bit, monitors the health of the device non-volatile trim memory.

This bit must always read '1' when the device is operating properly.

• Energy overflow — Indicated by the ENERGYOF bit, reports when the ENERGY register has reached an

overflow state due to data accumulation.

• Charge overflow — Indicated by the CHARGEOF bit, reports when the CHARGE register has reached an

overflow state due to data accumulation.

When the ALERT pin is configured to report the ADC conversion complete event, the ALERT pin becomes

a multipurpose reporting output. Figure 6-11 shows an example where the device reports ADC conversion

complete events while the INA701 device is subject to overcurrent, bus undervoltage, overtemperature and over

power events.

Current

Temperature

Bus Voltage

ALERT

(ALATCH = 0)

(APOL = 0)

(CNVR = 1)

Power

Current Over Limit Threshold

Bus Under Voltage Threshold

Over Temp Threshold

Power Over Limit Threshold

BUV

SET

COL

SET

BUV

CLEAR

COL

BUV

SET

COL

CLEAR

BUV

SET

BUV

SET

- No diag. error -

Conversion Complete

Reported

Figure 6-11. Multi-Alert Configuration

6.4 Device Functional Modes

6.4.1 Shutdown Mode

In addition to the two conversion modes (continuous and triggered), the device also has a shutdown mode

(selected by the MODE bits in ADC_CONFIG register) that reduces the quiescent current to less than 5µA and

turns off current into the device inputs, reducing the impact of supply drain when the device is not being used.

The registers of the device can be written to and read from while the device is in shutdown mode. The device

remains in shutdown mode until another triggered conversion command or continuous conversion command is

received.

The device can be triggered to perform conversions while in shutdown mode. When a conversion is triggered,

the ADC starts a conversion. After the conversion is complete, the device returns to the shutdown state.

Note that the shutdown current is specified with an inactive communications bus. Active clock and data activity

increases the current consumption as a function of the bus frequency.

INA701

SBOSAM2 – AUGUST 2025

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