MAS9079A1 데이터 시트보기 (PDF) - Micro Analog systems

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MAS9079A1

AM Receiver IC

Micro Analog systems 

DA9079.003

19 May, 2005

TYPICAL APPLICATION

X3

LANT

CANT1

Ferrite

Antenna

CANT3

CANT2

X2

Note 1

X1

Optional

Control

for AGC on/hold

QO3 QO2 QO1

QI

RFI1

AGC Amplifier

AON

Demodulator

&

OUT

Comparator

Receiver

Output

RFI2

RFI3

Power Supply/Biasing

VDD

VBATTERY

VSS PDN1 PDN2

AGC DEC

+

CAGC

CDEC

Figure 1

Power Down / Note 2

Fast Startup /

Frequency Selection

Application circuit of tri band receiver MAS9079

X3

40.003 kHz

X2

60.003kHz

X1

77.503kHz

Optional

Control

for AGC on/hold

LANT

3.07mH

CANT1

1.2nF

Ferrite

Antenna

CANT3

0.91nF

CANT2

3.0nF

QO3 QO2 QO1

QI

RFI1

RFI2

RFI3

AGC Amplifier

Power Supply/Biasing

AON

Demodulator

&

OUT

Comparator

Receiver

Output

Figure 2

VDD

1.4 V

VSS PDN1 PDN2

AGC DEC

+ CAGC

10 µF

CDEC

47 nF

Power Down /

Fast Startup /

Frequency Selection

Example circuit of tri band receiver MAS9079 for DCF77/MSF/WWVB/JJY frequencies

6 (9)

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