INA133U/2K5

Product Overview

• Category: Integrated Circuit (IC)
• Use: Instrumentation Amplifier
• Characteristics: High precision, low noise, high common-mode rejection ratio (CMRR)
• Package: SOIC-8
• Essence: The INA133U/2K5 is a precision instrumentation amplifier designed for accurate signal amplification in various applications.
• Packaging/Quantity: Available in reels of 2500 units.

Specifications

• Supply Voltage: ±2.25V to ±18V
• Input Offset Voltage: ±150µV (maximum)
• Input Bias Current: ±50nA (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Input Common-Mode Voltage Range: -Vs + 1.9V to +Vs - 1.9V
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA133U/2K5 has the following pin configuration:

___________ V- | 1 8 | V+ IN- | 2 7 | REF IN+ | 3 6 | OUT RG | 4 5 | NC -------------

Functional Features

• High accuracy and precision amplification of differential signals
• Excellent common-mode rejection ratio (CMRR) of 100dB (minimum)
• Low input offset voltage and bias current for improved accuracy
• Wide input common-mode voltage range for versatile applications
• Single-supply or dual-supply operation for flexibility

Advantages and Disadvantages

Advantages: - High precision amplification for accurate signal processing - Low noise performance for improved signal integrity - Wide input common-mode voltage range for versatile applications - Flexible supply voltage options

Disadvantages: - Limited gain bandwidth product compared to some other instrumentation amplifiers - Requires external resistors for setting the desired gain

Working Principles

The INA133U/2K5 is based on the principle of an instrumentation amplifier. It consists of a differential amplifier stage followed by a high-gain amplifier. The input signals are amplified differentially, and the common-mode noise is rejected due to the balanced configuration. The gain can be set using external resistors connected to the RG pin.

Detailed Application Field Plans

The INA133U/2K5 finds applications in various fields, including:

1. Medical equipment: ECG amplification, patient monitoring systems
2. Industrial automation: Process control, data acquisition systems
3. Test and measurement: Precision signal amplification, strain gauge amplification
4. Audio equipment: Microphone preamplifiers, audio signal conditioning

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to the INA133U/2K5 include:

1. AD8221: Instrumentation Amplifier with Rail-to-Rail Output
2. LT1167: Precision Instrumentation Amplifier
3. MCP6N11: Zero-Drift Instrumentation Amplifier

These alternatives provide comparable performance and can be considered based on specific application requirements.

In conclusion, the INA133U/2K5 is a precision instrumentation amplifier offering high accuracy, low noise, and excellent common-mode rejection. Its wide range of applications and availability of alternative models make it a versatile choice for various signal amplification needs.