mas9179 Micro Analog Systems Oy, mas9179 Datasheet

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mas9179

Manufacturer Part Number
mas9179
Description
Am Receiver Ic
Manufacturer
Micro Analog Systems Oy
Datasheet
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
FEATURES
BLOCK DIAGRAM
Tri Band Receiver IC
Highly Sensitive AM Receiver, 0.4 µV
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
RFIP
RFIM
RFI2
RFI3
VDD
QO3
Power Supply/Biasing
RMS
AGC Amplifier
QO2
typ.
VSS PDN1
QO1
PDN2
(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).
• Tri Band Receiver IC
APPLICATIONS
QI
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
Multi Band Time Signal Receiver WWVB (USA),
JJY (Japan), DCF77 (Germany), MSF (UK), HGB
(Switzerland) and BPC (China)
AGC
Demodulator
Comparator
&
DEC
AON
OUT
AM Receiver IC
MAS9179
19 May, 2005
DA9179.002
1 (9)

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mas9179 Summary of contents

Page 1

... High Selectivity by Crystal Filter • Fast Startup Feature (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 ...

Page 2

... Internal pull-up with current < 1 µA which is switched off at power down - 3) PDN1 = VDD and PDN2 = VDD means receiver off - Fast start-up is triggered when the receiver is after power down controlled to power up 4) Receiver inputs RFIP and RFIM have both 600 kΩ biasing MOSFET-transistors towards ground MAS9179Ax, x=1..4 VSS VDD RFI2 QO2 ...

Page 3

FREQUENCY SELECTION The frequency selection and power down control is accomplished via two digital control pins PDN1 and PDN2. The control logic is presented in table 1. Table 1 Frequency selection and power down control PDN1 PDN2 RFI2 Switch High ...

Page 4

ANTENNA TUNING CONSIDERATIONS The ferrite bar antenna having inductance L parasitic coil capacitance C COIL reception frequencies capacitors and C ANT1 ANT2 input stage and internal antenna capacitor switches have capacitances C ...

Page 5

ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage Input Voltage Power Dissipation Operating Temperature Storage Temperature 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 ...

Page 6

... Application circuit of tri band receiver MAS9179 ANT ANT2 ANT3 ANT1 3.07mH 3nF 0.91nF 1.2nF Ferrite Antenna Figure 2 Example circuit of tri band receiver MAS9179 for DCF77/MSF/WWVB/JJY frequencies QO3 QO2 QO1 RFIP AGC Amplifier RFIM RFI2 Power Supply/Biasing PDN2 ...

Page 7

... TYPICAL APPLICATION (Continued) Note 1: Crystals The crystals as well as ferrite antenna frequencies are chosen according to the time-signal system (Table 2). The crystal shunt capacitance C compensation capacitor C of MAS9179. See Compensation Capacitance Options on table 3. C Table 2 Time-Signal System Frequencies Time-Signal System Location DCF77 Germany ...

Page 8

... MAS9179 SAMPLES IN SBDIL 20 PACKAGE NC 1 VDD 2 QO2 3 QO1 4 QO3 AGC 8 PDN2 9 OUT 10 PIN DESCRIPTION Pin Name Pin NC 1 VDD 2 QO2 3 QO1 4 QO3 AGC 8 PDN2 9 OUT DEC 12 AON 13 PDN1 RFI3 16 RFIP 17 RFIM 18 RFI2 19 VSS Analog Digital Power Ground Input Output Not Connected ...

Page 9

... Differential Input MAS9179A2TC00 Tri Band AM-Receiver IC with Differential Input MAS9179A3TC00 Tri Band AM-Receiver IC with Differential Input MAS9179A4TC00 Tri Band AM-Receiver IC with Differential Input Contact Micro Analog Systems Oy for other wafer thickness options. LOCAL DISTRIBUTOR MICRO ANALOG SYSTEMS OY CONTACTS Micro Analog Systems Oy Kamreerintie 2, P ...

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