TDA7021 查看數據表（PDF） - Philips Electronics

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TDA7021

FM radio circuit for MTS

Philips Electronics 

Philips Semiconductors

FM radio circuit for MTS

Product specification

TDA7021T

Fig.9 Test set-up; Vi = 30 mV; fi = 76 kHz; selective voltmeter at output has Ri ≥ 1 MΩ and Ci ≤ 8 pF; fo = fi.

Note to Fig. 9

This test set-up is to incorporate the circuit of Fig.5 for mono operation or the circuit of Fig.8 for stereo operation.

For either circuit, replace the 100 nF capacitor at pin 6 with R6 (100 kΩ) as shown above.

Selectivity

S+300 = 20 log

Vo | (300 kHz − fi)

Vo | fi

S−300 = 20 log

Vo | (300 kHz + fi)

Vo | fi

May 1992

10

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