INA381A1IDSGR

Product Overview

Category: Integrated Circuit (IC)

Use: The INA381A1IDSGR is a high-side current sense amplifier designed for precision current measurement in various applications.

Characteristics: - High accuracy and precision - Wide input voltage range - Low offset voltage and low quiescent current - High common-mode rejection ratio (CMRR) - Small package size for space-constrained designs

Package: DSG (8-pin VSSOP)

Essence: The INA381A1IDSGR is an essential component for accurate current sensing and monitoring in electronic systems.

Packaging/Quantity: The INA381A1IDSGR is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Common-Mode Voltage Range: -0.3V to +26V
• Quiescent Current: 60µA (typical)
• Gain Bandwidth Product: 500kHz (typical)
• Output Voltage Swing: 0V to Vcc - 1.2V
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA381A1IDSGR has the following pin configuration:

1. OUT: Amplifier output
2. IN+: Non-inverting input
3. IN-: Inverting input
4. VS-: Negative supply voltage
5. VS+: Positive supply voltage
6. REF: Reference voltage
7. SET: Gain setting resistor connection
8. GND: Ground

Functional Features

• High accuracy current sensing with a gain error as low as ±0.5%
• Wide input voltage range allows for versatile application compatibility
• Low offset voltage ensures precise current measurements
• High CMRR minimizes common-mode noise interference
• Small package size enables space-efficient designs

Advantages and Disadvantages

Advantages: - High accuracy and precision in current sensing - Wide input voltage range for versatile applications - Low offset voltage and quiescent current for precise measurements - High CMRR reduces common-mode noise interference - Compact package size for space-constrained designs

Disadvantages: - Limited output voltage swing range - Requires external gain setting resistor for customization

Working Principles

The INA381A1IDSGR operates based on the principle of amplifying the voltage drop across a sense resistor connected in series with the load. It utilizes a high-gain amplifier to accurately measure the small voltage developed across the sense resistor, which is proportional to the load current. The amplified output signal can then be further processed or monitored by other circuitry.

Detailed Application Field Plans

The INA381A1IDSGR finds extensive use in various applications, including but not limited to: - Power management systems - Battery monitoring and charging circuits - Motor control and protection - Current monitoring in industrial equipment - Overcurrent detection in automotive systems - Solar power systems - LED lighting control

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the INA381A1IDSGR include: - INA180A1IDBVR - INA282AIDGKT - INA2132UA - MAX4080SASA+ - AD8217WBRZ

These alternatives may have slightly different specifications and pin configurations, so it is important to refer to their respective datasheets for detailed information.

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