INA4181A4QPWRQ1

Product Overview

Category: Integrated Circuit (IC)

Use: The INA4181A4QPWRQ1 is a high-precision, low-power, zero-drift instrumentation amplifier designed for automotive applications. It provides accurate amplification of small differential input signals in harsh environments.

Characteristics: - High precision: The INA4181A4QPWRQ1 offers excellent accuracy with low offset voltage and low offset drift over temperature. - Low power consumption: It operates at low supply voltages and consumes minimal power, making it suitable for battery-powered applications. - Zero-drift architecture: The zero-drift technology eliminates the need for external calibration, ensuring long-term stability and reliability. - Automotive-grade: This IC is specifically designed to meet the stringent requirements of the automotive industry, including extended temperature range and robustness against electromagnetic interference (EMI).

Package: The INA4181A4QPWRQ1 comes in a small-sized, surface-mount package, known as TSSOP-14. This package offers good thermal performance and ease of integration onto PCBs.

Essence: The essence of the INA4181A4QPWRQ1 lies in its ability to provide precise amplification of small differential signals in automotive applications while maintaining high accuracy and stability.

Packaging/Quantity: The INA4181A4QPWRQ1 is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Offset Voltage: ±25µV (maximum)
• Input Offset Drift: ±0.05µV/°C (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Common Mode Rejection Ratio: 120dB (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA4181A4QPWRQ1 has a total of 14 pins, which are assigned specific functions as follows:

1. IN-: Negative differential input
2. IN+: Positive differential input
3. REF-: Reference voltage negative input
4. REF+: Reference voltage positive input
5. VCM: Common-mode voltage output
6. OUT: Amplified output
7. GND: Ground
8. NC: No connection (unused pin)
9. NC: No connection (unused pin)
10. NC: No connection (unused pin)
11. NC: No connection (unused pin)
12. NC: No connection (unused pin)
13. V+: Positive supply voltage
14. V-: Negative supply voltage

Functional Features

• High gain accuracy and stability over temperature and time.
• Low noise and distortion for precise signal amplification.
• Wide common-mode voltage range for versatile applications.
• Built-in protection features against overvoltage and reverse polarity.
• Robust design for reliable operation in automotive environments.

Advantages and Disadvantages

Advantages: - High precision and stability - Low power consumption - Automotive-grade reliability - Integrated protection features

Disadvantages: - Limited supply voltage range (2.7V to 5.5V) - Higher cost compared to standard amplifiers

Working Principles

The INA4181A4QPWRQ1 utilizes a zero-drift architecture to achieve high precision amplification. It employs a combination of chopper stabilization and auto-zeroing techniques to minimize offset voltage and drift. This ensures accurate amplification of small differential signals even in harsh operating conditions.

Detailed Application Field Plans

The INA4181A4QPWRQ1 is specifically designed for automotive applications that require precise amplification of small differential signals. Some of the potential application fields include:

1. Automotive sensor interfaces
2. Battery monitoring systems
3. Engine control units (ECUs)
4. Powertrain systems
5. Electric vehicle (EV) charging stations

Detailed and Complete Alternative Models

• INA4181A1QPWRQ1: Similar to INA4181A4QPWRQ1 but with a different pin configuration (TSSOP-16 package).
• INA4181B4QPWRQ1: Higher gain version of INA4181A4QPWRQ1 with improved accuracy (TSSOP-14 package).
• INA4181C4QPWRQ1: Lower power consumption variant of INA4181A4QPWRQ1 (TSSOP-14 package).

These alternative models offer similar functionality and can be considered as substitutes based on specific requirements.

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