General Overview

In the current era of deep integration of digitalization and intelligence, data processing capabilities have become a key factor driving the development of various industries. Whether it is the precise collection of environmental data by smart devices, or the strict monitoring and control of production parameters in industrial systems, or the efficient processing of signals in the communication field, accurate and stable data processing serves as the cornerstone of intelligence. As an important part of the data processing chain, the performance of amplifiers directly affects data quality and system efficiency.

The CBM8655/CBM8656 low - noise and high - precision amplifiers developed by Corebai Microelectronics provide reliable signal processing solutions for multiple fields. They help solve the problems of traditional amplifiers and promote progress in signal processing in related industries.

I. Industry Status and Challenges

Audio Processing Industry

Currently, the audio processing industry is committed to achieving high - fidelity and immersive audio experiences. Professional recording pursues the original sound restoration, and consumer - grade audio devices also strive to present clear sound details. With the growing demand for high - fidelity audio, the industry urgently needs low - noise and low - distortion amplifiers to meet the requirements of high - precision audio processing.

Data Acquisition Industry

With the continuous advancement of technology, the requirements for the accuracy and stability of data acquisition are increasing. In the industrial production process, in order to monitor equipment status and product quality, it is necessary to collect weak signals from sensors. However, traditional amplifiers have a relatively high offset voltage during data acquisition, resulting in large errors in the collected data and making it difficult to truly reflect the actual situation. In addition, due to significant offset voltage drift, the accuracy of measurement data is severely affected by temperature changes, which poses a threat to the quality control of industrial production and the stable operation of equipment.

Industrial Control Industry

The working environment of the industrial control field is complex, and high requirements are placed on the adaptability and stability of electronic devices. With the continuous advancement of Industry 4.0, the requirements for signal processing in industrial control systems are becoming more and more stringent. This requires amplifiers to be able to operate stably within a wide power supply voltage range and a wide temperature range. Traditional amplifiers have a narrow working voltage range and can only operate under specific power supply voltages, unable to adapt to different power supply environments. Their performance will decline significantly in high - temperature or low - temperature environments, making it difficult to meet the reliability requirements of industrial control for signal processing.

II. Corebai Microelectronics CBM8655/CBM8656 Products

The CBM8655/CBM8656 is a dual - channel, rail - to - rail input/output low - noise precision CMOS amplifier. Through architectural innovation and process optimization, it breaks through the performance boundaries of traditional amplifiers.

Low - Noise Performance

The AD8655/AD8656 amplifiers are among the lowest - noise precision CMOS amplifiers in the industry. Their noise level at 10 kHz is only 2.7nV/√Hz. This low - noise characteristic makes them perform outstandingly in applications with extremely high requirements for signal purity, such as audio processing and sensor signal amplification.

High DC Precision

This amplifier can achieve high DC precision. High precision is crucial for applications such as data acquisition, process control, and PLL filters, as it can ensure the accuracy and reliability of data.

Low Distortion

The CBM8655/CBM8656 has an extremely low total harmonic distortion plus noise (THD + N), only 0.0007%. This means that when amplifying signals, it hardly introduces additional distortion, thus maintaining the original quality of the signals.

Wide Power Supply Voltage Range

This amplifier supports a wide power supply voltage range from 2.7V to 5.0V, meeting different application requirements. This enables it to operate stably in different power supply environments, increasing design flexibility.

Rail - to - Rail Input and Output

The CBM8655/CBM8656 is a voltage - feedback - type rail - to - rail input and output precision CMOS amplifier. This design allows it to process signals close to the power supply rails, thereby improving the dynamic range and signal processing capabilities.

Wide Temperature Adaptability

The rated temperature range of this amplifier is from - 40°C to + 125°C. This enables it to operate stably in various harsh environments and is suitable for fields such as automotive electronics and industrial control.

Ease of Use

The design of the CBM8655/CBM8656 takes ease of use into consideration, allowing engineers to easily integrate it into various systems. In addition, it also provides a variety of packaging options to meet different application requirements.

Product Parameters

 Low Noise: 2.7nV/√Hz at f = 10 kHz

 Low Offset Voltage: Maximum 250 μV on VCM

 Offset Voltage Drift: 0.4 μV/°C (Typical), 2.3 μV/°C (Maximum)

 Bandwidth: 28 MHz

 Rail - to - Rail Input/Output

 Unity - Gain Stable

 Operating Voltage Range: 2.7 V to 5.5 V

 Operating Temperature Range: - 40°C to + 125°C

 Certified for Automotive Applications

CBM8655/CBM8656 Product Applications

Audio Processing

 Microphone Preamplifiers: The low - noise characteristic of the CBM8655/CBM8656 makes it very suitable for use in microphone preamplifiers. It can amplify weak audio signals while maintaining a low - noise level, improving audio quality.

 Mixing Consoles: Audio equipment such as mixing consoles using the CBM8655/CBM8656 can achieve high - fidelity audio amplification and accurately ensure clear signals.

Data Acquisition Systems

Data acquisition systems can significantly improve data resolution and dynamic range by using the high - precision and low - noise characteristics of the CBM8655/CBM8656, ensuring accurate measurement results.

Process Control Systems

The CBM8655/CBM8656 is suitable for a variety of industrial process control systems, including temperature control and pressure monitoring. With its high precision and stability, it ensures the reliable operation of the system.

Communication Devices

In communication devices, the CBM8655/CBM8656 can be used for signal amplification and filtering, thereby improving communication quality and reliability.

Consumer Electronics

In consumer electronics such as smartphones and tablets, the CBM8655/CBM8656 can be used for audio processing and sensor signal amplification.