MAS6179 Datasheet, PDF (1/10 Pages) Micro Analog systems – AM Receiver IC

DA6179.000
22 January, 2007
This is preliminary information on a new
product under development. Micro Analog
Systems Oy reserves the right to make any
changes without notice.
MAS6179
AM Receiver IC
• Tri 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
DESCRIPTION
The MAS6179 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. MAS6179 supports up to three frequency
band operation by switching between three crystal
filters and two additional antenna tuning capacitors.
MAS6179 has differential input and two internal
compensation capacitor options for compensating
shunt capacitances of different crystals (See ordering
information on page 10).
FEATURES
• Tri Band Receiver IC
• Highly Sensitive AM Receiver, 0.4 µV_RMS typ.
• 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
• Multi Band Time Signal Receiver WWVB (USA),
JJY (Japan), DCF77 (Germany), MSF (UK), HBG
(Switzerland) and BPC (China)
BLOCK DIAGRAM
VDD
QO3 QO2 QO1 QI
RFIP VDD
RFIM
AGC Amplifier
AON
Demodulator
&
OUT
Comparator
RFI2
RFI3
Power Supply/Biasing
VDD VSS PDN1 PDN2 AGC
DEC
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