UPC2533GS Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPC2533GS

AM TUNER FOR ELECTRONIC TUNING CAR RADIOS

NEC => Renesas Technology 

µPC2533

The reference voltage of the µPC2533-01 and µPC2533-02 detection comparator has been internally fixed at

1.0 V.

Under the influence of R501 (5 kΩ) and R502 (5 kΩ) of the siganl meter circuit (Fig. 2-6), signal meter output voltage

and detection comparator input voltage do not perfectly coincide. For SD sensitivity setting, refer to the following

formula.

Detection comparator input voltage =

Signal meter output voltage × (1 +

R501

)

Value of resistor between pin 7 and GND

Remark Because DC output is open-collector type (Active high), connect pull-up resistor to pin 10 to use.

18

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