INA4235
Quad channel, 16-bit, ultra-precise, current, voltage, power and energy monitor with I²C Interface
INA4235
- 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)
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.
Technical documentation
Type | Title | Date | ||
---|---|---|---|---|
* | Data sheet | INA4235 48V, Quad Channel, 16-Bit, Ultra - Precise, Current, Voltage, Power, and Energy Monitor With an I2 C Interface datasheet | PDF | HTML | 30 May 2024 |
EVM User's guide | INA423x Evaluation Module User's Guide | PDF | HTML | 21 Mar 2024 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.
INA423XEVM — INA4230 and INA4235 evaluation module
The INA423X evaluation module (EVM) is a platform to evaluate the main features and performances of the INA4230 and INA4235. The EVM supports current measurements up to 10A per channel and comes with a GUI to support to read and write device registers.
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
Supported products & hardware
Products
Precision op amps (Vos<1mV)
General-purpose op amps
Audio op amps
Transimpedance amplifiers
High-speed op amps (GBW ≥ 50 MHz)
Power op amps
Video amplifiers
Line drivers
Transconductance amplifiers & laser drivers
Fully differential amplifiers
Precision ADCs
Biosensing AFEs
High-speed ADCs (≥10 MSPS)
Receivers
Touchscreen controllers
Difference amplifiers
Instrumentation amplifiers
Audio line receivers
Analog current-sense amplifiers
Digital power monitors
Analog current-sense amplifiers with integrated shunt resistor
Digital power monitors with integrated shunt resistor
Die & wafer services
CS-AMPLIFIER-ERROR-TOOL — Current sense amplifier comparison and error tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
TINA-TI — SPICE-based analog simulation program
Package | Pins | CAD symbols, footprints & 3D models |
---|---|---|
DSBGA (YBJ) | 16 | Ultra Librarian |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
- Fab location
- Assembly location
Support & training
TI E2E™ forums with technical support from TI engineers
Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.
If you have questions about quality, packaging or ordering TI products, see TI support.