Stand-alone am Receiver ic
Description
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DA9078.
002 17 April 2003
MAS9078
AM Receiver IC
• • • • • • •
DESCRIPTION
The MAS9078 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 receiver.
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.
Unlike MAS1016A and MAS1016B, MAS9078 does not require AGC control procedure in WWVB and JJY systems.
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
• • • • • • • • • • Highly Sensitive AM Receiver, 0.
4 µVRMS 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 Die and TSSOP-16 Package
APPLICATIONS
• • Time Signal Receiver WWVB (USA), JJY (Japan), DCF77 (Germany) and MSF (UK) Receiver for ASK Modulated Data Signals
BLOCK DIAGRAM
QO QI AON (=AGC on)
RFI
AGC Amplifier
Demodulator & Comparator
OUT
Power Supply/Biasing
VDD
VSS
PDN
AGC
DEC 1 (10)
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DataSheet4U.
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DA9078.
002 17 April 2003
PAD LAYOUT
1702 µm
VSS RFI PDN AON DEC MAS
1778 µm
9078Bx VDD QO QI AGC OUT
DIE size = 1.
70 x 1.
78 mm; PAD size = 100 x 100 µm Note: Because the substrate of the die is internally connected to VDD, the die has to be connected to VDD or left floating.
Please make sure that VDD is the first pad to be bonded.
Pick-and-place and all component assembly are recommended to be performed in ESD prote...
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