INA4181A1QPWRQ1

Product Overview

Category: Integrated Circuit (IC)

Use: The INA4181A1QPWRQ1 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 INA4181A1QPWRQ1 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 ensures long-term stability and eliminates the need for external calibration. - Automotive-grade: This IC is specifically designed to meet the stringent requirements of the automotive industry, including extended temperature range and high reliability.

Package: The INA4181A1QPWRQ1 comes in a small-sized, surface-mount package, known as TSSOP-16. This package offers good thermal performance and ease of integration into PCB designs.

Essence: The essence of the INA4181A1QPWRQ1 lies in its ability to provide precise amplification of small differential signals in automotive applications while maintaining stability and low power consumption.

Packaging/Quantity: The INA4181A1QPWRQ1 is typically sold in reels containing 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Input Offset Voltage: ±50µV (maximum)
• Input Offset Drift: ±0.1µV/°C (maximum)
• Gain Bandwidth Product: 500kHz (typical)
• Common Mode Rejection Ratio: 120dB (typical)
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The INA4181A1QPWRQ1 has a total of 16 pins, which are assigned specific functions as follows:

1. IN-: Negative differential input
2. IN+: Positive differential input
3. REF-: Reference voltage negative terminal
4. REF+: Reference voltage positive terminal
5. V-: Negative power supply
6. OUT: Amplifier output
7. V+: Positive power supply
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. NC: No connection (unused pin)
14. NC: No connection (unused pin)
15. NC: No connection (unused pin)
16. NC: No connection (unused pin)

Functional Features

• High gain accuracy and linearity
• Low noise and distortion
• Wide common-mode voltage range
• Overvoltage and reverse polarity protection
• Short-circuit and thermal protection

Advantages and Disadvantages

Advantages: - High precision and stability - Low power consumption - Automotive-grade reliability - Small package size for easy integration

Disadvantages: - Limited operating temperature range (-40°C to +125°C) - Higher cost compared to standard amplifiers

Working Principles

The INA4181A1QPWRQ1 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 over time and temperature. This ensures accurate signal amplification even in harsh automotive environments.

Detailed Application Field Plans

The INA4181A1QPWRQ1 is specifically designed for automotive applications that require precise amplification of small differential signals. Some of its common application fields include: - Automotive engine control systems - Battery management systems - Sensor signal conditioning - Active noise cancellation systems

Detailed and Complete Alternative Models

1. INA4181A2QPWRQ1: Similar to the INA4181A1QPWRQ1, but with extended temperature range (-40°C to +150°C).
2. INA4181B1QPWRQ1: Lower-cost alternative with slightly reduced precision and performance.
3. INA4181C1QPWRQ1: Higher-grade version with improved specifications and additional features.

These alternative models offer flexibility in choosing the right amplifier based on specific application requirements.

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