6 (9)

DA9079.003

19 May, 2005

TYPICAL APPLICATION

C

ANT1

C

ANT3

L

ANT

C

ANT2

AGC Amplifier

Power Supply/Biasing

Demodulator

&

Comparator

RFI1

RFI2

VDD

VSS PDN1

AGC

DEC

OUT

QO2

QO1

QI

AON

+

V

BATTERY

Receiver

Output

C

AGC

C

DEC

Power Down /

Fast Startup /

Frequency Selection

Optional

Control

for AGC on/hold

Ferrite

Antenna

PDN2

X

2

X

1

RFI3

QO3

X

3

Note 1

Note 2

Figure 1

Application circuit of tri band receiver MAS9079

AGC Amplifier

Power Supply/Biasing

Demodulator

&

Comparator

VDD

VSS PDN1

AGC

DEC

OUT

QO2

QO1

QI

AON

+

1.4 V

Receiver

Output

C

AGC

10 µF

C

DEC

47 nF

Power Down /

Fast Startup /

Frequency Selection

Optional

Control

for AGC on/hold

PDN2

QO3

X

3

40.003 kHz

X

1

77.503kHz

X

2

60.003kHz

RFI1

RFI2

Ferrite

Antenna

RFI3

C

ANT1

1.2nF

C

ANT3

0.91nF

L

ANT

3.07mH

C

ANT2

3.0nF

Figure 2

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