MB7139-701

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Ultrasonic Receivers, Transmitters

The MB7139-701 is an ultrasonic receiver, transmitter device developed and manufactured by Japan SPM Company. It is a bipolar small-scale integrated circuit constructed on a thin-film-transistor (TFT) substrate. The device has a wide frequency range from 300 KHz to 3GHz. It also features low power consumption and high sensitivity.

The MB7139-701 is mainly used in miniature ultrasonic receivers and transmitters. These devices are used for a wide variety of applications such as medical imaging, industrial measurements, and security and surveillance.

The working principle of an MB7139-701 is based on the use of an ultrasonic signal that is transmitted and received from a source. The ultrasonic signal is emitted as a specific frequency, and the device is able to discriminate between this frequency and other frequencies.

In order to receive an ultrasonic signal, the MB7139-701 uses a synchronous discriminator circuit. The circuit uses two matched quartz crystals, each set to the frequency of the incoming signal. A reference voltage is applied to the crystals, and the difference between this voltage and the detected signals is used to determine the strength of the signal. In this way, the MB7139-701 is able to identify the transmission frequency of the signal.

Once it has identified this frequency, the MB7139-701 is able to detect and amplify the signal. After the signal passes through the amplifier, it is then sent to an analog-to-digital converter, which is used to convert the audio signal into a digital signal. The digital signal is then used to control the application for which it is intended.

The MB7139-701 can also be used as a transmitter. In this case, a voltage is applied to the transmitter, which converts the voltage into ultrasonic waves. The frequency and amplitude of these waves can be adjusted according to the needs of the application.

The MB7139-701 is a highly reliable device that can be used in a wide variety of applications. It is capable of detecting ultrasonic signals over a wide range and converting them into digital signals. Its low power consumption also makes it ideal for use in small-scale devices.

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