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1.5V AM/FM IF+MPX
The TA2022AFN is an AM/FM IF+MPX system IC developed for headphone radio use.
Features
* Suitable for combination with Digital Tuning System which includes an IF counter.
– Built-in AM/FM IF count output for IF counter of Digital Tuning System.
FM: 10.7MHz
AM: 450kHz
– Adjustable stop pulse sensitivity (in FM mode)
* For adopting ceramic discriminator, it is not necessary to adjust the FM QUAD detector circuit.
* Built-in AM IF output for AM stereo
* MPX input for main signal is independent of that for pilot signal. (MPX input for pilot signal is shared with AM input)
* MPX output is high-impedance in power off mode.
* Built-in power switch
* Low supply current (Vcc = 1.2V, Ta = 25C)
– FM mode: Icc2 = 5.5mA (typ.)
– AM mode: Icc3 = 3.7mA (typ.)
* Operating supply voltage range (Ta = 25C)
– Vcc(opr) = 0.95 – 2.2V
* Stereo operating supply voltage range (Ta = 25C)
– Vcc(opr) = 1.0 – 2.2V