INA301A3QDGKRQ1

Product Overview

Category: Integrated Circuit (IC)

Use: The INA301A3QDGKRQ1 is a high-side current sense amplifier designed for automotive applications. It provides accurate current measurements in various systems, such as battery management, motor control, and power distribution.

Characteristics: - High accuracy and precision - Wide input voltage range - Low offset voltage and low quiescent current - High common-mode rejection ratio (CMRR) - Overtemperature and overcurrent protection

Package: The INA301A3QDGKRQ1 comes in a small outline package (SOIC) with 8 pins.

Essence: This IC is essential for monitoring and controlling the current flow in automotive systems, ensuring safe and efficient operation.

Packaging/Quantity: The INA301A3QDGKRQ1 is typically sold in reels of 2500 units per reel.

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 INA301A3QDGKRQ1 has the following pin configuration:

1. V+ (Positive Supply Voltage)
2. IN+ (Positive Differential Input)
3. IN- (Negative Differential Input)
4. REF (Reference Voltage)
5. OUT (Output)
6. GND (Ground)
7. SET (Gain Setting)
8. V- (Negative Supply Voltage)

Functional Features

• High-side current sensing
• Adjustable gain through external resistor
• Built-in overtemperature and overcurrent protection
• Wide input voltage range for versatile applications
• Low offset voltage for accurate measurements
• High common-mode rejection ratio for noise immunity

Advantages and Disadvantages

Advantages: - Accurate and precise current measurements - Suitable for automotive applications - Wide operating temperature range - Overtemperature and overcurrent protection enhance system safety - Versatile gain adjustment capability

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

Working Principles

The INA301A3QDGKRQ1 operates based on the principle of measuring the voltage drop across a sense resistor connected in series with the load. It amplifies this voltage drop to provide an accurate representation of the current flowing through the load. The gain of the amplifier can be adjusted using an external resistor connected to the SET pin.

Detailed Application Field Plans

The INA301A3QDGKRQ1 is widely used in various automotive applications, including:

1. Battery Management Systems (BMS): Monitoring the charging and discharging currents of the battery pack.
2. Motor Control: Measuring the current drawn by motors to ensure proper operation and prevent overload.
3. Power Distribution: Monitoring the current flow in power distribution systems to detect faults or abnormal conditions.

Detailed and Complete Alternative Models

1. INA301A1QDGKRQ1: Similar to INA301A3QDGKRQ1 but with a different package (SOT-23).
2. INA301A4QDGKRQ1: Higher precision version of INA301A3QDGKRQ1 with lower offset voltage and higher CMRR.
3. INA301A5QDGKRQ1: Extended temperature range variant of INA301A3QDGKRQ1 (-40°C to +150°C).

These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.

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