TEA6856AHN/V205K

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RF Receivers are the most common types of electronic devices. TEA6856AHN/V205K is a particular receiver whose application and working principle are detailed below.

The TEA6856AHN/V205K is a wide-band FM/AM RF tuner IC intended for use in receivers in portable radio applications, such as radio-cassette-recorder combination sets, portable pocket radios, and transistor radios. It covers the AM range from 540 kHz up to 1620 kHz and the FM range from 87 MHz to 108 MHz. The TEA6856AHN/V205K IC combines radio frequency (RF) and intermediate frequency (IF) demodulation functions, channel selection and local oscillator (LO). It also has the ability to detect the various transmitting modes, for example, AM, stereo and auto blend. Other features include a low self-noise voltage and a low DC current.

The TEA6856AHN/V205K RF receiver works by using several Oscillators and amplifiers. The first stage of the receiver is the RF amplifier which increases the strength of the incoming radio signal. After this, the signal is tuned to the desired frequency by the Variable Oscillator. The Variable oscillator and amplifier circuit allows for frequency tuning and variation of the RF signal. After this, the signal is sent to the Intermediate Frequency (IF) filter, which filters out any off-frequency signals and produces a clean signal at the IF frequency. This signal is then demodulated and analyzed in the IF Demodulator, Signal Processor, and Audio Stage. The Audio Stage amplifies the signal and sends it to the output stage, which produces a louder and clearer sound.

The TEA6856AHN/V205K is typically used in products that require a wide-band tuning range with low noise and a low drain current. Examples of these products include portable pocket radios, transistor radios, and radio-cassette-recorder combination sets. The TEA6856AHN/V205K has the ability to recognize the different transmitting modes, such as AM, stereo, and auto blend, as well as an improved low self-noise voltage and low DC current. This makes it an ideal solution for applications that require a wide-band receiver with good sensitivity and selectivity at low current.

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