mas9079a4tc00 Micro Analog Systems Oy, mas9079a4tc00 Datasheet

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mas9079a4tc00

Manufacturer Part Number
mas9079a4tc00
Description
Am Receiver Ic
Manufacturer
Micro Analog Systems Oy
Datasheet
DESCRIPTION
The MAS9079 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
RFI2
RFI3
RFI1
VDD
QO3
Power Supply/Biasing
AGC Amplifier
RMS
QO2
VSS PDN1
typ.
QO1
PDN2
(automatic gain control) can be used to switch AGC
on or off if necessary. MAS9079 supports tri band
operation by switching between three crystal filters
and two additional antenna tuning capacitors.
MAS9079 has asymmetric 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
MAS9079
19 May, 2005
DA9079.003
1 (9)

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mas9079a4tc00 Summary of contents

Page 1

DESCRIPTION The MAS9079 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 ...

Page 2

PAD LAYOUT 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 ...

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 RFI1 Pin Input Resistance RFI1 Pin Input Capacitance ...

Page 6

TYPICAL APPLICATION ANT ANT1 ANT2 ANT3 Ferrite Antenna Figure 1 Application circuit of tri band receiver MAS9079 ANT ANT1 ANT3 ANT2 3.07mH 1.2nF 0.91nF 3.0nF Ferrite Antenna Figure 2 Example circuit of ...

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 3). The crystal shunt capacitance C compensation capacitor C of MAS9079. See Compensation Capacitance Options on table 2. ...

Page 8

MAS9079 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 ...

Page 9

... Asymmetric Input MAS9079A2TC00 Tri Band AM-Receiver IC with Asymmetric Input MAS9079A3TC00 Tri Band AM-Receiver IC with Asymmetric Input MAS9079A4TC00 Tri Band AM-Receiver IC with Asymmetric 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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