DA6181B.002
5 May, 2011
MAS6181B
AM Receiver IC
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DESCRIPTION
The MAS6181 AM-Receiver chip is a highly sensitive,
simple to use AM receiver specially intended to
receive time signals in the frequency range from 40
kHz to 100 kHz. Only a few external components are
required for time signal receiving. The circuit has
preamplifier, wide range automatic gain control,
demodulator and output comparator built in. The
output signal can be processed directly by an
additional digital circuitry to extract the data from the
received signal. The control for AGC (automatic gain
control) can be used to switch AGC on or off if
necessary.
The MAS6181 supports receiving two different
frequency signals by two selective crystal filters and
an integrated switch to switch between two antenna
frequencies. It has differential input for improved
common mode disturbance rejection.
Dual Band Receiver IC
High Sensitivity
Very Low Power Consumption
Wide Supply Voltage Range
Power Down Control
Control for AGC On
High Selectivity by Crystal Filter
Fast Startup Feature
FEATURES
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Dual Band Receiver IC
Highly Sensitive AM Receiver
Wide Supply Voltage Range from 1.1 V to 3.6 V
Very Low Power Consumption
Power Down Control
Fast Startup
Only a Few External Components Necessary
Control for AGC On
Wide Frequency Range from 40 kHz to 100 kHz
High Selectivity by Quartz Crystal Filter
Differential Input
APPLICATIONS
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Multi Band Time Signal Receiver WWVB (USA),
JJY (Japan), DCF77 (Germany), MSF (UK), HBG
(Switzerland) and BPC (China)
BLOCK DIAGRAM
VDD
QO2 QO1
QI
AON
Demodulator
&
Comparator
OUT
RFIP
VDD
AGC Amplifier
RFIM
RFI2
Power Supply/Biasing
VDD
VSS PDN1 PDN2
AGC
DEC
1 (15)
MAS [ MICRO ANALOG SYSTEMS ]
