INA3221-Q1 Texas instruments

INA3221-Q1

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INA3221-Q1

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Описание

The INA3221-Q1 is a three-channel, high-side current and bus voltage monitor with an I2C- and SMBUS-compatible interface. The INA3221-Q1 monitors both shunt voltage drops and bus supply voltages, in addition to having programmable conversion times and averaging modes for these signals. The INA3221-Q1 offers both critical and warning alerts to detect multiple programmable out-of-range conditions for each channel.The INA3221-Q1 senses current on buses that can vary from 0 V to 26 V. The device is powered from a single 2.7-V to 5.5-V supply, and draws 350 µA (typ) of supply current. The INA3221-Q1 is specified over the operating temperature range of –40 °C to +125 °C. The I2C- and SMBUS-compatible interface features four programmable addresses.

Qualified for automotive applications
AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40 °C to 125 °C
Functional Safety-Capable
- Documentation available to aid functional safety system design
Senses bus voltages from 0 V to 26 V
Reports shunt and bus voltage
High accuracy:
- Offset voltage: ±80 µV (maximum)
- Gain error: 0.25% (maximum)
Configurable averaging options
Four programmable addresses
Programmable alert and warning outputs
Power-supply operation: 2.7 V to 5.5 V

Common-mode voltage (max) (V)	26
Common-mode voltage (min) (V)	0
Input offset (±) (max) (µV)	80
Input offset drift (±) (max) (µV/°C)	0.5
Input offset drift (±) (typ) (µV/°C)	0.1
Voltage gain (V/V)	1
CMRR (min) (dB)	110
Bandwidth (kHz)	3.5
Supply voltage (max) (V)	5.5
Supply voltage (min) (V)	2.7
Iq (max) (mA)	0.35
Digital interface	I2C, SMBus
Gain error (%)	0.25
Gain error drift (±) (max) (ppm/°C)	50
Features	Alert Function, Bi-directional, Low-side Capable
Number of channels	3
Resolution (Bits)	13
TI functional safety category	Functional Safety-Capable
Rating	Automotive
Operating temperature range (°C)	-40 to 125