CXA1600 查看數據表（PDF） - Sony Semiconductor

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CXA1600

8-pin Single-chip AM Radio with Built-in Power Amplifier

Sony Semiconductor 

CXA1600M/P

Notes on Applications

Application 1

Bar ANT

D1, D2: 1S1555

OSC COIL

VARIABLE CAPACITOR:

HQ-025A of Toko Co., Ltd.

or equivalent

VOSC=400mVp-p

D2

fIN

D1

8

RF IN

GND

7

OL AGC

C3

1500p

fOSC

6

LO OSC

5

VCC

GND

RF AMP

OVERLOAD AGC

MIXER

fIF

BPF

OSC

IF AMP

AGC

IF DET

AGC

1

VOL

VOL

2

AF POWER AMP

GND

3

SP OUT

4

C6

220µ

8Ω SP

GND

GND

The CXA1600M/P operates on the new system using very low intermediate frequency (approx. 55 kHz).

(Actual IF frequency is determined by internal B.P.F.fo.)

1

fIF = fOSC–fIN ≈ 55 kHz

2

Please take care of choice of the coil and variable capacitor as follows. (See next page.)

—5—

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