INA145
Versatile amplifier
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製造商零件號 # : INA145
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包裝/封裝: SOP8
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製造商: Texas Instruments
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產品分類 : Instrumentation, OP Amps, Buffer Amps
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INA145 數據表
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目前的價格方案正在編制中。請聯絡我們的客戶服務團隊獲取最新的價格資訊。感謝您的理解和支援!
詳細說明
The INA145 is a precision, low-cost, low-power instrumentation amplifier designed by Texas Instruments. It offers high accuracy and stability for applications requiring precise differential signal acquisition, such as medical instrumentation, industrial process control, and test and measurement equipment.The INA145 features a gain range of 1 to 1000, with a fixed gain options of 10 and 100. It has a common-mode input voltage range of ±12V and operates over a wide supply voltage range of ±2.25V to ±18V. The device offers excellent common-mode rejection ratio (CMRR) and power supply rejection ratio (PSRR) to ensure accurate measurements in noisy environments.The amplifier has a high input impedance of 500MΩ, minimizing the loading effect on the sensor or signal source. It also has a low offset voltage of 500µV and low offset drift to maintain precision over temperature variations.The INA145 is available in 8-pin DIP and SOIC packages, making it easy to integrate into a variety of circuit designs. It is designed to be robust and reliable, with overvoltage protection and thermal shutdown features to prevent damage to the amplifier.
主要特徵
- High common-mode rejection ratio (CMRR) of 86 dB
- Low offset voltage of 100 µV
- Wide supply voltage range of ±2.25V to ±18V
- High bandwidth of 900 kHz
- Low input bias current of 0.1 nA
- Flexible input range selection via external resistors
應用
- Industrial automation
- Power distribution systems
- Motor control
- Robotics
- Audio systems
- Medical equipment
- Instrumentation
- Control systems
- Security systems
- Aerospace applications
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等,這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is INA145?
The INA145 is a precision instrumentation amplifier designed by Texas Instruments. It is ideal for applications requiring accurate amplification of small differential signals, such as sensor interfaces, industrial instrumentation, and data acquisition systems.
How Does INA145 Work?
The INA145 works by amplifying the voltage difference between two input signal pins with high accuracy and stability. It features high common-mode rejection ratio (CMRR) and low offset voltage, making it suitable for applications where common-mode noise rejection and precision amplification are critical.
How Many Pins does INA145 have and What are the Functions of the Pinout Configuration?
The INA145 is housed in an 8-pin SOIC (Small Outline Integrated Circuit) package. The pinout configuration includes:
- VS+: Positive power supply pin.
- VS-: Negative power supply pin.
- REF: Reference voltage pin.
- OUT: Amplified output pin.
- V+: Non-inverting input pin.
- V-: Inverting input pin.
- RG: Gain setting resistor pin.
- RG: Gain setting resistor pin.
What are the Pros and Cons of INA145?
Pros:
- Precision Amplification: Provides accurate amplification of small differential signals.
- High CMRR: Offers high common-mode rejection ratio for effective noise rejection.
- Low Offset Voltage: Ensures minimal voltage offset for precise measurements.
- Wide Supply Voltage Range: Operates with a wide supply voltage range for flexibility in system design.
- Small Package: Compact 8-pin SOIC package for space-efficient designs.
Cons:
- External Components: May require additional external components for specific gain configurations or filtering.
- Cost: Precision instrumentation amplifiers may have a higher cost compared to simpler op-amps.
- Complexity: Requires careful attention to layout and grounding for optimal performance.
Are There Any Equivalents/Alternatives to INA145 for Recommendation?
- The INA333 from Texas Instruments is a similar precision instrumentation amplifier with lower power consumption.
- Alternatives to the INA145 include the AD8421 from Analog Devices and the MCP6N11 from Microchip Technology.
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