INA128UA
Product Overview
- Category: Integrated Circuit (IC)
- Use: Instrumentation Amplifier
- Characteristics: High precision, low noise, high common-mode rejection ratio (CMRR)
- Package: 8-pin SOIC (Small Outline Integrated Circuit)
- Essence: Amplification of small differential signals with high accuracy and stability
- Packaging/Quantity: Available in reels of 2500 units
Specifications
- Supply Voltage Range: ±2.25V to ±18V
- Input Offset Voltage: 50µV (maximum)
- Input Bias Current: 500nA (maximum)
- Gain Bandwidth Product: 1MHz
- Common-Mode Rejection Ratio (CMRR): 120dB (minimum)
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The INA128UA has the following pin configuration:
- REF (Reference Voltage)
- V-
- V+
- RG (Gain Setting Resistor)
- OUTPUT
- NC (No Connection)
- NC (No Connection)
- VS- (Negative Power Supply)
Functional Features
- High input impedance
- Low output impedance
- Adjustable gain through external resistor
- Internal voltage reference for precise measurements
- Wide supply voltage range for versatile applications
Advantages
- Excellent accuracy and stability
- Low noise performance
- High CMRR for rejecting common-mode noise
- Flexible gain adjustment
- Suitable for a wide range of applications
Disadvantages
- Limited gain bandwidth product compared to some other amplifiers
- Requires external gain-setting resistor for adjusting gain
Working Principles
The INA128UA is an instrumentation amplifier that amplifies small differential signals while rejecting common-mode noise. It consists of three operational amplifiers and precision resistors. The input signal is amplified by a differential gain set by an external resistor. The amplified signal is then filtered and outputted with high accuracy and stability.
Detailed Application Field Plans
The INA128UA is widely used in various applications, including:
- Biomedical instrumentation: ECG (Electrocardiogram), EEG (Electroencephalogram), EMG (Electromyography)
- Industrial process control: Pressure and temperature measurement
- Strain gauge amplification: Load cells, force sensors
- Data acquisition systems: Bridge measurements, sensor interfaces
- Audio equipment: Microphone preamplifiers, audio mixers
Alternative Models
Other alternative models that can be considered as alternatives to the INA128UA are:
- AD620 - Instrumentation Amplifier with lower power consumption
- INA114 - Instrumentation Amplifier with higher gain bandwidth product
- AD8221 - Instrumentation Amplifier with rail-to-rail input/output capability
These alternative models offer different features and specifications, allowing users to choose the most suitable amplifier for their specific application requirements.
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기술 솔루션에 INA128UA 적용과 관련된 10가지 일반적인 질문과 답변을 나열하세요.
Sure! Here are 10 common questions and answers related to the application of INA128UA in technical solutions:
Q: What is INA128UA? A: INA128UA is a precision instrumentation amplifier that can accurately amplify small differential signals.
Q: What is the voltage supply range for INA128UA? A: The voltage supply range for INA128UA is typically between ±2.25V and ±18V.
Q: What is the input voltage range of INA128UA? A: The input voltage range of INA128UA is typically between -Vs + 0.1V and +Vs - 0.1V, where Vs is the supply voltage.
Q: Can INA128UA handle high common-mode voltages? A: Yes, INA128UA has a high common-mode rejection ratio (CMRR) which allows it to reject common-mode voltages effectively.
Q: What is the gain accuracy of INA128UA? A: The gain accuracy of INA128UA is typically within 0.01% of the set gain.
Q: Can INA128UA be used in low-power applications? A: Yes, INA128UA has a low quiescent current consumption, making it suitable for low-power applications.
Q: Is INA128UA suitable for temperature measurement applications? A: Yes, INA128UA has a wide operating temperature range and low temperature drift, making it suitable for accurate temperature measurements.
Q: Can INA128UA be used in single-supply applications? A: Yes, INA128UA can operate with a single supply voltage, as long as the input and output voltages remain within the specified range.
Q: What is the bandwidth of INA128UA? A: The bandwidth of INA128UA is typically around 1 MHz, making it suitable for a wide range of applications.
Q: Can INA128UA be used in medical instrumentation? A: Yes, INA128UA is commonly used in medical instrumentation due to its high accuracy and low noise characteristics.
Please note that the answers provided are general and may vary depending on specific datasheet specifications and application requirements.