M52342FP datasheet(13/19 Pages) RENESAS

13 / 19 page

M52342FP

Rev.2.00 Jun 14, 2006 page 13 of 18

Pin 6, Pin 7, Pin 8 (GND)

They are all groung pins.

Pin 9 (QIF DET IN)

The input impedance is 1.5 k

Ω.

In the intercarrier system application, the intercarrier output is

available in pin 15 by connecting pin 9 to ground.

Terminal voltage

: 2.4 V

Inter/Sprit

Inter

Bias

5 k

1.5 k

SAW

Pin 10 (IF AGC FILTER)

1 k

VCC

In spite of the 1-pin filter configuration, 2-pin filter

characteristics are available by utilizing the dynamic AGC

circuit.

weak

electric field

strong

electric field

(IF input)

(V10)

Pin 11 (NFB)

The FM detector can respond to several kinds of SIF signals

without an adjustment and external components by adopting

the PLL technique.

It also is in compliance with the multi-SIF by selecting an

appropriate deemphasis and audio output amplifier using the

pin 14 switch.

The capacitor between pin 11 and 12, which fixes the

deemphasis characteristics, can be determined considering

the combination of an equivalent resistance of the IC and this

capacitor itself.

Terminal voltage

: 2.1 V

5 k

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