INA701 datasheet(36/47 Pages) TI2

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7.2 Typical Application

The low offset voltage of the INA701 allows accurate monitoring of a wide range of currents. Figure 7-1 shows

the circuit for monitoring currents in a high-side configuration.

GND

ALERT

SDA

SCL

0.1µF

Power supply voltage

(2.7V to 5.5V)

Bus supply rail

(–0.3V to 40V)

IN+

IN–

INA701

LOAD

Figure 7-1. INA701 High-Side Sensing Application Diagram

7.2.1 Design Requirements

The design requirements for the circuit shown in Figure 7-1 are listed in Table 7-3.

Table 7-3. Design Parameters

DESIGN PARAMETER

EXAMPLE VALUE

Power-supply voltage (VS)

Bus supply rail (VCM)

12V

Bus supply rail overvoltage fault threshold

14V

Average Current

Overcurrent fault threshold (IMAX)

Temperature

40ºC

Charge Accumulation Period

1 hour

7.2.2 Detailed Design Procedure

7.2.2.1 Configure the Device

The first step to program the INA701 is to properly set the device and ADC configuration registers. On initial

power up, the CONFIG and ADC_CONFIG registers are set to the reset values as shown in Table 6-5 and

Table 6-6. In this default power-on state, the device is set with the ADC continuously converting the temperature,

current, and bus voltage. If the default power-up conditions do not meet the design requirements, these registers

must be set properly after each VS power cycle event.

7.2.2.2 Set Desired Fault Thresholds

Fault thresholds are set by programming the desired trip threshold into the corresponding fault register. Table 6-1

shows the list of supported fault registers.

INA701

SBOSAM2 – AUGUST 2025

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