INA281A2IDBVR

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INA281A2IDBVR

IC CURR SENSE 1 CIRCUIT SOT23-5

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規格

Supplier Texas Instruments
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
AmplifierType Current Sense
NumberofCircuits 1
SlewRate 2.5V/µs
GainBandwidthProduct 1.3 MHz
Current-InputBias 20 µA
Voltage-InputOffset 55 µV
Current-Supply 1.5mA
Voltage-SupplySpan(Min) 2.7 V
Voltage-SupplySpan(Max) 20 V
OperatingTemperature -40°C ~ 125°C (TA)
MountingType Surface Mount
Package/Case SC-74A, SOT-753

概述

Description

The INA281A2IDBVR is TI’s high-side current-sense amplifier. It measures the voltage drop across a sense/shunt resistor and produces an output voltage proportional to the sensed current, enabling bidirectional current measurement in high-side (and low-side) configurations.
Key points:
- Senses differential voltage across a shunt and converts it to a convenient output for an ADC.
- Bidirectional current measurement with a fixed/amplified output suitable for microcontroller or DSP input.
- Wide input common-mode range and fast response for power-management, motor control, battery management, and protection circuits.
- Includes a reference/offset option for easy zero-scale alignment and offset trimming.
- Typically packaged in an 8-pin device in TI’s DBVR-related package naming, suitable for compact PCB mounting.
Applications include motor drives, DC-DC converters, battery charging/discharging monitoring, overcurrent protection, and general power-sense instrumentation.

Features

Here are the key features of INA281A2IDBVR (high-side current-sense monitor):
- High-side current sensing through shunt resistor with differential input
- Wide input/common-mode voltage range suitable for high-side measurements
- Analog output proportional to sensed current (amplified shunt voltage)
- Low input offset voltage and low drift for accurate current measurement
- Fast response with good common-mode rejection
- Low quiescent current; operates on a single supply
- RoHS-compliant 8-pin package (DBV variant) with compact footprint
- Optional fault/diagnostic indication for overcurrent or fault conditions
- Broad operating temperature range suitable for automotive/industrial applications
Note: Always refer to the exact datasheet for precise electrical specs, voltage ranges, and pinout for your specific application.

Package

An 8-pin VSSOP (Very Small Outline Package) – DBV suffix. The INA281A2IDBVR uses the VSSOP-8 package (lead-free, tape-and-reel).

Pinout

- Pin count: 8 pins (8‑pin package, e.g., SOIC-8/VSSOP-8).
- Function: High-side current-sense monitor that measures the voltage across a shunt resistor on the high side and provides a proportional output with an I2C interface for reading current and fault/diagnostic information.

Manufacturer

Manufacturer: Texas Instruments (TI).
What kind of company: An American multinational semiconductor company that designs and manufactures analog and mixed-signal integrated circuits, including current-sense amplifiers like the INA281.

Application

INA281A2IDBVR is a high-side current-sense amplifier. Common applications include:
- High-side current sensing for switching regulators/DC-DC converters
- Automotive battery monitoring and protection
- Motor control and drive current sensing
- Power-supply protection and current-limit/overcurrent circuits
- Industrial automation and renewable-energy power paths (solar, PMU monitoring)

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