CBM24AD98Q - Ideal for High-Performance ECG and Biopotential Measurements

 With the rapid development of modern medical technology, accurate biopotential measurement equipment has become increasingly important. The CBM24AD98Q launched by Corebai Microelectronics is a low-noise 24-bit analog-to-digital converter (ADC) designed for electrocardiogram (ECG) and other biopotential measurements, providing medical equipment manufacturers with a high-performance, reliable and economical solution.

 

 

Product Features

Up to 8 low-noise programmable gain amplifiers (PGAs) and 8 high-resolution simultaneous sampling ADCS

Input referred noise: 4μVPP@150HzBW, G=6 (CBM24AD98Q), 1μVPP@70HzBW (CBM24AD99Q)

Input bias current: 200 pA (CBM24AD98Q), 300 pA (CBM24AD99Q)

Data rate: 250 SPS to 32kSPS (CBM24AD98Q), 250SPS to 16kSPS (CBM24AD99Q)

Common mode rejection ratio: -115 dB (CBM24AD98Q), -110dB (CBM24AD99Q)

Unipolar or bipolar power supply:

n Analog: 2.7V to 5.5V (CBM24AD98Q)

n Digital: 1.7V to 3.3V (CBM24AD98Q)

n Analog: 4.5V to 5.5V (CBM24AD99Q)

n Digital: 1.8V to 3.3V (CBM24AD99Q)

Built-in bias driver amplifier, lead-off detection, test signal

Built-in oscillator

Internal or external reference

Flexible power-off and standby modes

Pin-compatible and program-compatible with ADS1298, ADS1299

SPI-compatible serial interface

Operating temperature range: –40℃ to +85℃

 

Product Advantages

Excellent noise performance

The CBM24AD9X series features up to 8 low-noise PGAs and 8 high-resolution synchronous sampling ADCs, with input-referred noise as low as 4μVPP (150Hz bandwidth, gain of 6), ensuring accurate measurements in all environments. Such excellent noise performance enables it to provide high-quality data in low-signal measurement environments, providing a reliable basis for medical diagnosis.

Flexible design and application

The chip supports unipolar or bipolar power supplies, has programmable gain (1, 2, 4, 6, 8, 12 or 24), and data rates adjustable from 250 SPS to 32kSPS to meet different measurement needs. This flexibility enables the CBM24AD9X series to be widely used in a variety of medical equipment, from portable electrocardiographs to high-end patient monitoring systems.

Built-in multiple functions to reduce system complexity

Built-in right leg drive amplifier, lead detection, test signal, Wilson center terminal, and enhanced electrode circuit simplify the design process and save development time and cost. Engineers can use these integrated functions to quickly develop and deploy high-performance biopotential measurement systems without additional external components.

Strong compatibility

The CBM24AD9X series is pin- and program-compatible with the ADS1298, making it easy to upgrade existing systems. For systems that already use the ADS1298, users can easily upgrade to the CBM24AD9X series to benefit from its superior performance and functionality without making extensive hardware and software changes.

Reliable performance

The operating temperature range is –40°C to +85°C, making it suitable for applications in a variety of harsh environments. Whether in extremely cold environments or under conditions of high temperature and high humidity, the CBM24AD9X series can operate stably to ensure the reliability and durability of the equipment.

 

 

Typical Applications

Electrocardiogram (ECG): The high resolution and low noise characteristics of the CBM24AD9X series make it an ideal choice for ECG equipment. It can capture subtle changes in ECG signals and help doctors accurately diagnose heart diseases. Its high data rate (up to 32kSPS) and high gain setting (up to 24 times) can provide clear ECG waveforms to ensure that subtle changes in each heart cycle are detected.

Electromyography (EMG) and Electroencephalography (EEG): The CBM24AD9X series also performs well in EMG and EEG applications. Its multi-channel synchronous sampling capability (up to 8 channels) can simultaneously record multiple muscle or brain electrical activity signals, providing detailed data support for neurology and sports medicine. The noise level as low as 4 μVPP enables it to accurately capture low-intensity bioelectric signals, ensuring high accuracy and reliability of data.

Patient Monitoring Equipment: The CBM24AD9X series can be integrated into various patient monitoring equipment to monitor patients' vital signs in real time, provide accurate physiological parameters, and ensure patient safety. For example, key indicators such as heart rate, respiratory rate, blood oxygen saturation (SpO2), and blood pressure can be accurately measured by the high-precision ADC of the CBM24AD9X series. Its multi-channel design and low power consumption make it particularly suitable for portable monitoring devices and long-term monitoring systems.

Holter: Its high data rate and low power consumption design are particularly suitable for Holter devices, which can record the patient's ECG signals for a long time and provide comprehensive heart health data. When recording a Holter, the CBM24AD9X series can ensure continuous and uninterrupted data acquisition, provide detailed analysis of heart activity, and help doctors identify and diagnose potential heart problems.

Vital Signs Monitoring: The CBM24AD9X series plays an important role in vital signs monitoring. Its high resolution and multi-channel design can simultaneously monitor multiple physiological parameters such as heart rate, respiratory rate, blood pressure, and blood oxygen saturation, providing a comprehensive health status assessment. Its built-in right leg drive amplifier and lead detection function ensure the stability and reliability of the signal and reduce measurement errors and interference.

AED equipment: In automatic external defibrillator (AED) equipment, the CBM24AD9X series provides high-precision ECG signal detection, helping the equipment to accurately determine arrhythmias and provide timely electric shock treatment. Its fast response and high precision ensure that reliable data support can be provided in emergency situations to save patients' lives.

Bispectral index (BIS) monitoring: BIS monitoring is used for anesthesia depth assessment. The CBM24AD9X series can accurately record EEG activity and provide real-time BIS index to help anesthesiologists adjust anesthesia doses to ensure patient safety and comfort. Its high precision and low noise characteristics enable it to provide clear EEG signals in complex surgical environments.

Sleep monitor: The CBM24AD9X series also performs well in sleep monitoring. It can record a variety of physiological signals such as heart rate, respiratory rate, and brain waves, provide a comprehensive sleep quality assessment, and help doctors diagnose sleep disorders and develop treatment plans. Its high resolution and low power design are particularly suitable for portable and home use sleep monitoring devices.

 

Manufacturer introduction: Corebai Microelectronics

Corebai Microelectronics  is committed to providing high-quality integrated circuits and solutions. With the launch of the CBM24AD9X series, we have further strengthened our leading position in the field of medical electronics. The CBM24AD9X series not only improves the accuracy and reliability of medical equipment, but also significantly reduces the power consumption and overall cost of the system, injecting new impetus into the innovative development of medical devices.

Whether it is an electrocardiograph or a complex multi-parameter patient monitoring system, the CBM24AD9X series can provide excellent performance and reliability, helping medical professionals better monitor and diagnose the health of patients. Choosing the CBM24AD9X series means choosing precision, stability and efficiency.

 

For more information about the CBM24AD9X series, or to obtain samples and technical support, please visit ww.chipmall.com, or contact our sales team. We look forward to working with you to promote the advancement and development of medical technology.

 

Why Choose  CBM24AD98Q？

The two eight-channel ADCs launched by Xinbaiwei are low-noise 24-bit synchronous sampling ADCs, which have built-in programmable gain amplifiers (PGA), internal voltage references, and internal oscillators. Among them, the CBM24AD98Q integrates various functions required for electrocardiogram (ECG) and extracranial electroencephalogram (EEG) applications. With its excellent integration and performance, the CBM24AD98Q can achieve significant reductions in size, power consumption and overall cost, thereby providing flexibility and scalability for the creation of medical instrument systems. In addition, the CBM24AD98Q is also equipped with a flexible input multiplexer that can be independently connected to internally generated signals for testing, temperature measurement, and lead-off detection. At the same time, the chip also supports low power and high-precision modes, with a data sampling rate range of 250SPS to 32kSPS. If required for high-channel count systems, multiple CBM24AD98Q chips can be cascaded via daisy chain.

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