INA701 datasheet(15/47 Pages) TI2

15 / 47 page

Pulse Duration (s)

0.01

0.1

100

1000

7.5

12.5

17.5

____ TA = -40°C

____ TA = 25°C

____ TA = 85°C

Figure 6-5. Maximum Pulse Current vs Pulse Duration (Single Event)

6.3.3 Versatile Measurement Capability

While the INA701 operates from a 2.7V to 5.5V supply, the device can measure voltage and current on rails as

high as 40V. The current is measured by sensing the voltage drop across an internal shunt resistor positioned

between the IN+ and IN– pins. The input stage of the INA701 is designed such that the input common-mode

voltage can be higher than the device supply voltage, VS. The supported common-mode voltage range of –0.3V

to +40V at the input pins is designed for both high-side and low-side current measurements. There are no

special considerations for power-supply sequencing because the common-mode input range and device supply

voltage are independent of each other; therefore, the bus voltage can be present with the supply voltage off, and

vice-versa without damaging the device.

The device also measures the bus supply voltage through the IN– pin and temperature through the integrated

temperature sensor. The differential shunt voltage is measured between the IN+ and IN– pins, while the bus

voltage is measured with respect to device ground. Monitored bus voltages can range from 0V to 40V, while

monitored temperatures can range from –40°C to +125°C.

Shunt voltage, bus voltage, and temperature measurements are multiplexed internally to a single ADC as shown

in Figure 6-6.

IN+

IN-

VBUS

MUX digital

Control

Bus Voltage

Shunt Voltage

Temperature

ADC_IN+

ADC_IN-

To ADC Input

Integrated

Shunt Resistor

TEMP

Temperature

Sensor

Figure 6-6. High-Voltage Input Multiplexer

6.3.4 Internal Measurement and Calculation Engine

The current and charge are calculated after temperature and shunt voltage measurements, while the power and

energy are calculated after a bus voltage measurement. Power and energy are calculated based on the previous

current calculation and the latest bus voltage measurement.

www.ti.com

INA701

SBOSAM2 – AUGUST 2025

Submit Document Feedback

Product Folder Links: INA701

INA701 Datasheet(PDF) 15 Page - Texas Instruments

INA701 Datasheet(HTML) 15 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47

Datasheet Download

Link URL