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INA4235
  • INA4235
  • INA4235

INA4235

ACTIVE

Quad channel, 16-bit, ultra-precise, current, voltage, power and energy monitor with I²C Interface

Texas Instruments INA4235 Product Info

1 April 2026 4

Parameters

Common-mode voltage (max) (V)

48

Common-mode voltage (min) (V)

-0.3

Digital interface

I2C, SMBus

Resolution (Bits)

16

Input offset (±) (max) (µV)

10

Input offset drift (±) (max) (µV/°C)

0.025

Voltage gain (V/V)

1

CMRR (min) (dB)

130

Supply voltage (max) (V)

5.5

Supply voltage (min) (V)

1.7

Iq (max) (mA)

0.5

Gain error (%)

0.1

Gain error drift (±) (max) (ppm/°C)

25

Features

Alert Function, Bidirectional, Integrated Power Accumulator, Intergrated Power Monitor, Low-side Capable

Number of channels

4

Power measurement accuracy (%)

0.8

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Package

DSBGA (YBJ)-16-2.56 mm² 1.6 x 1.6

Features

  • High-side or low-side current sensing
  • Operates from a 1.7V to 5.5V power supply
  • Reports current, voltage, power, and energy
  • Programmable full scale range: 20mV / 80mV
  • Input common mode range: –0.3V to 48V
  • Current monitoring accuracy:
    • 16-bit ADC resolution
    • 0.1% gain error (maximum)
    • 10µV offset (maximum)
  • Power monitoring accuracy:
    • 0.2% full scale (maximum)
  • Energy monitoring accuracy:
    • 0.7% full scale (maximum)
  • Low input bias currents: 5nA (maximum)
  • Low disable current: 50nA (maximum)
  • Configurable averaging options
  • Alert limits for over and under current events
  • 1.2V compliant I2C, SMBus interface
  • 16-pin selectable addresses
  • DSBGA-16 Package (1.5mm × 1.5mm)
  • High-side or low-side current sensing
  • Operates from a 1.7V to 5.5V power supply
  • Reports current, voltage, power, and energy
  • Programmable full scale range: 20mV / 80mV
  • Input common mode range: –0.3V to 48V
  • Current monitoring accuracy:
    • 16-bit ADC resolution
    • 0.1% gain error (maximum)
    • 10µV offset (maximum)
  • Power monitoring accuracy:
    • 0.2% full scale (maximum)
  • Energy monitoring accuracy:
    • 0.7% full scale (maximum)
  • Low input bias currents: 5nA (maximum)
  • Low disable current: 50nA (maximum)
  • Configurable averaging options
  • Alert limits for over and under current events
  • 1.2V compliant I2C, SMBus interface
  • 16-pin selectable addresses
  • DSBGA-16 Package (1.5mm × 1.5mm)

Description

The INA4235 device is a quad channel 16-bit digital current monitor with an I2C/SMBus-compatible interface that is compliant with digital bus voltages from 1.2V to 5V. The device monitors the voltage across an external sense resistor and reports values for shunt voltage, bus voltage, current, power, and energy for each channel.

The INA4235 features programmable ADC conversion times and averaging that is common for all channels. Each channel has a programmable calibration value with an internal multiplier that enables direct readouts of current in amperes, power in watts, and energy in joules. Each channel monitors the bus voltage present on the IN– pin and can alert on overcurrent and undercurrent conditions, as well as on overvoltage and undervoltage conditions.High input impedance while in current measurement mode allows use of larger current sense resistors needed to measure small value system currents.

The INA4235 senses current on common-mode bus voltages that can vary from –0.3V to 48V, independent of the supply voltage. The device operates from a single 1.7V to 5.5V supply, drawing a typical supply current of 400µA in normal operation. The device can be placed in a low-power standby mode where the typical operating current is 2.5µA and can be fully disabled using the enable pin to achieve an supply current less than 50nA. The device is specified over the operating temperature range between –40°C and 125°C and features up to 16 programmable addresses.

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