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MAS9191A Datasheet(PDF) 34 Page - Micro Analog systems

Part # MAS9191A
Description  Single Chip AMPS/ETACS/NAMPS Audio/Data Processor
PDF  36 Pages
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Manufacturer  MAS [Micro Analog systems]
Direct Link  http://www.mas-oy.com
Logo MAS - Micro Analog systems

MAS9191A Datasheet(HTML) 34 Page - Micro Analog systems

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34
DA9191A.000
July 31, 1997
APPLICATION INFORMATION
MAS9191A
MICRO
CONTROLLER
MEMORY
Interfaces
- DISPLAY
- KEYPAD
RF
FRONT END
IF
DEMODULATOR
DUAL
SYNTHESIZER
DUPLEX
FILTER
POWER
AMP
VCXO
RX VCO
TX VCO
AUDIO/DATA
PROCESSOR
RX
TX
DAC
Typical MAS9191A application in AMPS/ETACS cellular system.
TEST CIRCUIT
22nF
22nF
22nF
22nF
100nF
100nF
22pF
22pF
22nF
22nF
1M
4.8MHz
22nF
22nF
22nF
22nF
C
R
16
15
13
14
11
12432
57
56
1
48
49
47
46
45
42
41
40
39
36
35
34
28
30
29
26
27
20
19
17
18
RF Modulator
IF
earphone
buzzer
MIC
6.8
100
22nF
100nF
100nF
100nF
EXTMIC
1
2
3
4
MAS 9191A
R
R
EXTEARP
1nF
side tone
side tone
A3
A4
micro
controller
A6
Serial bus
C
C
32
R
R
A6
C
C
31
VDD
components determine the gain of SIDETONE amplifier A2
components determine the gain of microphone amplifier A6
NPN transistor for the buzzer
components determine RC time constant if DTMF receiver is used
4
1
2
3
DTMF Receiver



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