DA9079.003
19 May, 2005
TYPICAL APPLICATION
X
3
X
2
X
1
Note 1
Optional
Control
for AGC on/hold
QI
AON
Demodulator
&
Comparator
OUT
Receiver
Output
QO3 QO2
RFI1
L
ANT
C
ANT1
C
ANT3
C
ANT2
QO1
AGC Amplifier
RFI2
RFI3
Power Supply/Biasing
VDD
V
BATTERY
VSS PDN1 PDN2
AGC
+
DEC
C
AGC
C
DEC
Ferrite
Antenna
Note 2
Power Down /
Fast Startup /
Frequency Selection
Figure 1
Application circuit of tri band receiver MAS9079
X
3
40.003 kHz
X
2
60.003kHz
X
1
77.503kHz
Optional
Control
for AGC on/hold
QI
AON
Demodulator
&
Comparator
OUT
Receiver
Output
QO3 QO2
QO1
RFI1
L
ANT
3.07mH
C
ANT1
1.2nF
C
ANT3
0.91nF
C
ANT2
3.0nF
AGC Amplifier
RFI2
RFI3
Power Supply/Biasing
VDD
1.4 V
VSS PDN1 PDN2
AGC
DEC
+ C
AGC
10
µF
Power Down /
Fast Startup /
Frequency Selection
C
DEC
47 nF
Ferrite
Antenna
Figure 2
Example circuit of tri band receiver MAS9079 for DCF77/MSF/WWVB/JJY frequencies
6 (9)
MAS [ MICRO ANALOG SYSTEMS ]
