INA105KU/2K5

Product Overview

• Category: Integrated Circuit (IC)
• Use: Instrumentation Amplifier
• Characteristics: High precision, low noise, high common-mode rejection ratio (CMRR)
• Package: SOT-23-5
• Essence: Differential amplifier with high input impedance and low output impedance
• Packaging/Quantity: Tape and Reel, 2500 units per reel

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 + 1.8V to +Vs - 1.8V
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The INA105KU/2K5 has a total of 5 pins:

1. V-
2. REF
3. V+
4. OUT
5. NC

Functional Features

• High precision amplification of differential signals
• Excellent rejection of common-mode noise
• Low input offset voltage and bias current
• Wide operating temperature range
• Small package size for space-constrained applications

Advantages

• High accuracy and stability in amplifying small differential signals
• Effective suppression of common-mode noise interference
• Suitable for a wide range of temperature conditions
• Compact package size allows for flexible integration into various systems

Disadvantages

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

Working Principles

The INA105KU/2K5 is an integrated circuit that functions as an instrumentation amplifier. It amplifies the difference between two input signals while rejecting common-mode noise. The amplifier consists of multiple stages, including a differential amplifier and an output buffer. The input stage provides high input impedance, allowing for accurate signal acquisition. The output stage provides low output impedance to drive external loads.

Detailed Application Field Plans

The INA105KU/2K5 is commonly used in various applications that require precise amplification of small differential signals. Some typical application fields include:

1. Medical instrumentation: ECG (Electrocardiogram), EEG (Electroencephalogram), and other bio-potential measurements.
2. Industrial process control: Amplification of sensor signals in temperature, pressure, and flow measurement systems.
3. Strain gauge amplification: Precise measurement of strain in structural monitoring and load cell applications.
4. Data acquisition systems: Accurate signal conditioning for analog-to-digital converters (ADCs).
5. Test and measurement equipment: High-precision signal amplification in laboratory instruments.

Detailed and Complete Alternative Models

• AD620: Instrumentation amplifier with similar specifications and pin configuration.
• INA128: Higher precision instrumentation amplifier with lower input offset voltage.
• AD8221: Instrumentation amplifier with higher gain bandwidth product and rail-to-rail inputs.
• AD8421: Precision instrumentation amplifier with extremely low input offset voltage and drift.

(Note: This list is not exhaustive and there are several other alternative models available in the market.)

This entry provides an overview of the INA105KU/2K5, an instrumentation amplifier IC. It includes information about its category, use, characteristics, package, essence, packaging/quantity, specifications, pin configuration, functional features, advantages and disadvantages, working principles, detailed application field plans, and alternative models.