TDA1576T/V4,112

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The TDA1576T/V4,112 is a device that falls under the category of RF Demodulators. It is a single chip demodulator that is used to convert RF signals into a low-frequency intermediate frequency signal. The device is made using CMOS technology and is designed for use in digital format teletext systems. It is also suitable for use in TV sets, video recorders, remote-control systems, and other applications.

The operating frequency range of the TDA1576T/V4,112 is between 6 MHz and 55 MHz. The device can operate from a single power supply at supply voltage levels of 2.2V to 5.5V. On-chip power management features such as the Charge Pump System and high voltage switching provide power optimization. It is designed to operate in both television and radio band signals with a selectivity of 2.4 MHz.

The TDA1576T/V4,112 has two independent channels with separate outputs. Each channel includes a high performance mixer, attenuator, and amplifier. The onboard attenuator has adjustable steps from 0 dB to 88 dB. The mixer conversion gain is also adjustable from -10 dB to 10 dB. The mixer can be used for both FM and AM signals.

The input noise level of the TDA1576T/V4,112 is low and the suppression of transmitted interference from adjacent channels is high. The device also has good RF interference rejection and good image rejection. It is designed to perform well in low noise environments and provides a very low distortion level.

As for application fields, the TDA1576T/V4,112 is widely used in digital format teletext systems. It can also be used in radio station reception systems, headphone TV receivers, and satellite receivers. It is suitable for use in digital terrestrial TV sets, digital satellite TV receivers, and digital recorders. In addition, the device can be used for remote-control systems and for decoding in home entertainment systems.

The working principle of the TDA1576T/V4,112 is quite simple. It converts the incoming RF signal into a low frequency intermediate frequency signal. This intermediate frequency signal is then demodulated and the information is extracted. The device is designed to operate in a range of 6 MHz to 55 MHz and thus is suitable for receiving signals in both the television and radio bands.

In conclusion, the TDA1576T/V4,112 is a single chip demodulator that is used to convert RF signals into a low frequency intermediate frequency signal. It is suitable for use in digital format teletext systems, radio station reception systems, headphone TV receivers, and satellite receivers. The device has excellent performance in low noise environments and is designed to perform well in both television and radio band signals with a selectivity of 2.4 MHz.

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