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INA111AU/1KE4
Product Overview
- Category: Integrated Circuit (IC)
- Use: Amplifier
- Characteristics: High precision, low noise, low power consumption
- Package: SOIC (Small Outline Integrated Circuit)
- Essence: Instrumentation amplifier
- 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: 200kHz (typical)
- Input Common-Mode Voltage Range: -Vs + 1.8V to +Vs - 1.8V
- Operating Temperature Range: -40°C to +85°C
Detailed Pin Configuration
The INA111AU/1KE4 has a total of 8 pins:
- Pin 1: Non-Inverting Input (+IN)
- Pin 2: Inverting Input (-IN)
- Pin 3: Output (OUT)
- Pin 4: Negative Supply Voltage (-Vs)
- Pin 5: Null
- Pin 6: Positive Supply Voltage (+Vs)
- Pin 7: Null
- Pin 8: Null
Functional Features
- High common-mode rejection ratio (CMRR)
- Low input offset voltage and bias current
- Wide supply voltage range
- Rail-to-rail output swing capability
- Low quiescent current
Advantages and Disadvantages
Advantages
- High precision amplification
- Low noise performance
- Suitable for low-power applications
- Wide operating temperature range
- Versatile and flexible in various circuit designs
Disadvantages
- Limited gain bandwidth product compared to some alternatives
- Higher cost compared to basic operational amplifiers
Working Principles
The INA111AU/1KE4 is an instrumentation amplifier designed to amplify small differential signals while rejecting common-mode noise. It consists of three operational amplifiers and precision resistors that provide high accuracy and stability. The input stage provides high input impedance, while the output stage delivers a low output impedance.
Detailed Application Field Plans
The INA111AU/1KE4 is commonly used in various applications, including:
- Medical equipment: ECG (Electrocardiogram), EEG (Electroencephalogram), and EMG (Electromyography) devices.
- Industrial automation: Process control systems, data acquisition, and sensor signal conditioning.
- Test and measurement equipment: Precision voltage/current measurements, strain gauge amplification, and thermocouple amplification.
- Communication systems: Audio signal amplification and filtering.
Detailed and Complete Alternative Models
- AD620: Instrumentation amplifier with similar specifications and performance.
- INA114: Higher precision instrumentation amplifier with lower offset voltage.
- AD8221: Low power instrumentation amplifier with rail-to-rail output swing capability.
Note: This is not an exhaustive list, and there are several other alternative models available in the market.
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What is the typical supply voltage range for INA111AU/1KE4?
- The typical supply voltage range for INA111AU/1KE4 is ±2.25V to ±18V.
What is the input offset voltage of INA111AU/1KE4?
- The input offset voltage of INA111AU/1KE4 is typically 50µV.
Can INA111AU/1KE4 be used in single-supply applications?
- Yes, INA111AU/1KE4 can be used in single-supply applications with proper biasing.
What is the common-mode rejection ratio (CMRR) of INA111AU/1KE4?
- The CMRR of INA111AU/1KE4 is typically 100dB.
Is INA111AU/1KE4 suitable for precision instrumentation amplification?
- Yes, INA111AU/1KE4 is suitable for precision instrumentation amplification due to its low offset voltage and high CMRR.
What is the bandwidth of INA111AU/1KE4?
- The bandwidth of INA111AU/1KE4 is typically 800kHz.
Can INA111AU/1KE4 operate in harsh industrial environments?
- Yes, INA111AU/1KE4 is designed to operate in harsh industrial environments with proper precautions.
What is the temperature range for INA111AU/1KE4?
- The temperature range for INA111AU/1KE4 is typically -40°C to 85°C.
Does INA111AU/1KE4 require external compensation?
- No, INA111AU/1KE4 does not require external compensation.
Can INA111AU/1KE4 be used in medical instrumentation applications?
- Yes, INA111AU/1KE4 can be used in medical instrumentation applications due to its precision and low noise characteristics.