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PDF MAS9179 Data sheet ( Hoja de datos )
| Número de pieza | MAS9179 | |
| Descripción | Stand-alone Tri Band Time Signal AM Receiver IC | |
| Fabricantes | MAS | |
| Logotipo |  |
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www.DataSheet4U.com
DA9179.002
19 May, 2005
MAS9179
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 MAS9179 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. MAS9179 supports tri band
operation by switching between three crystal filters
and two additional antenna tuning capacitors.
MAS9179 has differential input and different internal
compensation capacitor options for compensating
shunt capacitances of different crystals (See ordering
information on page 9).
FEATURES
• Tri Band Receiver IC
• Highly Sensitive AM Receiver, 0.4 µVRMS typ.
• Wide Supply Voltage Range from 1.1 V to 5 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
APPLICATIONS
• Multi Band Time Signal Receiver WWVB (USA),
JJY (Japan), DCF77 (Germany), MSF (UK), HGB
(Switzerland) and BPC (China)
BLOCK DIAGRAM
RFIP
RFIM
QO3 QO2 QO1 QI
AGC Amplifier
AON
Demodulator
&
OUT
Comparator
RFI2
RFI3
Power Supply/Biasing
VDD VSS PDN1 PDN2 AGC
DEC
1 (9)
1 page  
www.DataSheet4U.com
DA9179.002
19 May, 2005
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
Symbol
VDD-VSS
VIN
PMAX
TOP
TST
Conditions
Min
-0.3
VSS-0.3
-40
-55
Max
6
VDD+0.3
100
+85
+150
Unit
V
V
mW
oC
oC
ELECTRICAL CHARACTERISTICS
Parameter
Operating Voltage
Current Consumption
Stand-By Current
Input Frequency Range
Minimum Input Voltage
Maximum Input Voltage
Receiver Input Resistance
Receiver Input Capacitance
RFI2 Switch On Resistance
RFI2 Switch Off Capacitance
RFI3 Switch On Resistance
RFI3 Switch Off Capacitance
Input Levels |lIN|<0.5 µA
Output Current
VOL<0.2 VDD;VOH >0.8 VDD
Output Pulse
Startup Time
Output Delay Time
Symbol
VDD
IDD
IDDoff
fIN
VIN min
VIN max
RRFI
CRFI
RON2
COFF2
RON3
COFF3
VIL
VIH
|IOUT|
T100ms
T200ms
T500ms
T800ms
TStart
TDelay
Conditions
Operating Conditions: VDD = 1.4V, Temperature = 25°C
Min Typ Max Unit
1.10
5V
VDD=1.4 V, Vin=0 µVrms
VDD=1.4 V, Vin=20 mVrms
VDD=3.6 V, Vin=0 µVrms
VDD=3.6 V, Vin=20 mVrms
31
27
64
37
67 91
40 65
0.1
µA
µA
40 100 kHz
0.4 1 µVrms
20 mVrms
f=40kHz..77.5 kHz
VDD=1.4 V
VDD=1.4 V
0.8 VDD
5
230
6
3.8
37
2.4
119
0.2
VDD
kΩ
pF
Ω
pF
Ω
pF
V
µA
1 µVrms ≤ VIN ≤
20 mVrms
1 µVrms ≤ VIN ≤
20 mVrms
1 µVrms ≤ VIN ≤
20 mVrms
1 µVrms ≤ VIN ≤
20 mVrms
Fast Start-up, Vin=0.4 µVrms
Fast Start-up, Vin=20 mVrms
50
150
400
700
140
230
500 600
800 900
1.3
3.5
50 100
ms
ms
ms
ms
s
ms
5 (9)
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet MAS9179.PDF ] | |
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