Replacing AD8138, the low-noise fully differential amplifier GX8138 is widely used in communication, medical, and measurement systems
Time:2025-06-25
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The function of an operational amplifier is to regulate and amplify analog signals. It is a widely used device that can be connected to appropriate feedback networks and used as a supplier of precision AC and DC amplifiers, active filters, oscillators, and voltage comparators. Its application areas have extended to various fields such as automotive electronics, communication, and consumption, and will play an important role in future technology.
For general operational amplifiers, GXSC GX8138 has made significant progress in differential signal processing. GX8138 can be used as both a single ended to differential amplifier and a differential amplifier, making it easy to use like a typical operational amplifier and greatly simplifying differential signal amplification and driving. The amplifier has low input noise and a -3dB bandwidth of 300MHz, which can provide differential signals with lower harmonic distortion compared to existing differential amplifiers. GX8138 utilizes internal common mode feedback and external gain feedback to provide good gain and phase matching.

GX8138 has excellent distortion performance and is an ideal ADC driver for communication systems, capable of driving 10 bit to 16 bit converters at higher frequencies. The high bandwidth and IP3 characteristics make it suitable for use as a gain module in intermediate frequency and baseband signal chains. The excellent misalignment and dynamic performance make this device very suitable for various signal processing and data acquisition applications.
GX8138 is suitable for various application scenarios:
1. Data acquisition system: In the data acquisition card, GX8138 can be used to convert single ended signals into differential signals, improving the system‘s anti-interference ability.
2. Communication system: In wireless and wired communication systems, GX8138 can be used for front-end signal processing to ensure stable signal transmission.
3. Medical equipment: In medical imaging equipment, GX8138 can be used for signal amplification and conditioning to improve image clarity and accuracy.
4. Testing and Measurement: GX8138 can be used for precise measurement and analysis of signals in laboratory and industrial testing environments.





