MAX15501GTJ+

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The MAX15501GTJ+ is a highly integrated, sensor-signal-conditioning analog front end (AFE) for ultrasound systems and other medical applications. The device combines an adjustable gain amplifier, a 10-bit, 500-kSPS, low-noise analog-to-digital converter (ADC), a 10-bit digital-to-analog converter (DAC), and a programmable gain amplifier (PGA) into one small package. The MAX15501GTJ+ operates from a single 2.7V to 3.6V supply and contains a $

Features and Benefits

The MAX15501GTJ+ features a wide range of functions for sensor signal condition that makes it ideal for medical applications. It offers high SNR and low THD performance, with an adjustable linearity of up to 20 LSBs. It also has digitally programmable gain, offset adjust, and full-scale adjust, together with an integrated PGA that supports gains of up to 30V/V. This allows for a wide range of gain range selections. Furthermore, the device provides an excellent common-mode rejection ratio of 80 dB, low power consumption of only 139μA/MHz, and a wide 3.2V to 3.6V operating range. Additionally, the device has wide temperature range of -40°C to 125°C, making it suitable for a variety of applications that require a high level of accuracy and reliability.

Application Field and Working Principle

The MAX15501GTJ+ is suitable for use in applications such as medical ultrasound systems and other medical applications that require an analog front-end solution with a high level of accuracy and reliability. The device features a wide range of functions for signal conditioning, making it an ideal solution for medical applications.

The working principle of the MAX15501GTJ+ analog front end (AFE) is based on the differential signal chain architecture. This architecture is designed to minimize distortion, noise, and other distortion-related problems in the system. The differential signal chain architecture provides improved noise performance, higher linearity and effective common-mode rejection.

At the start of the signal chain, the incoming differential signal is amplified by the adjustable gain amplifier. The amplified signal is then processed by the 10-bit, 500-kSPS low-noise ADC. The ADC converts the analog signal into digital format, which is then further conditioned and passed on to the DAC. The DAC then converts the digital signal into its corresponding analog voltage level. Finally, the programmable gain amplifier is used to match the output voltage range to the desired level and to provide additional gain if needed.

Conclusion

The MAX15501GTJ+ is a highly integrated, sensor-signal-conditioning analog front end solution for medical applications. It features a wide range of features and benefits, including high SNR, low THD performance, adjustable gain and offset adjust, integrated PGA and low power consumption. The device operates from a single 2.7V to 3.6V supply, and offers a wide temperature range of -40°C to 125°C. Its differential signal chain architecture is designed to provide improved noise performance, higher linearity and effective common-mode rejection.

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