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MAS9191A Datasheet(PDF) 2 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) 2 Page - Micro Analog systems

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DA9191A.000
July 31, 1997
PIN CONFIGURATION
AGND
TX
TAUDOUT
TAUDIN
LPFIN
VSAT
VDAT
TXACCOUT
COUT
CAMP2I
CWCIN
CAMP20
COMPIN
MICOUT
EINR
STGT
EST
RAUDIN
RXACCOUT
EXPOUT
TXACCIN
PREIN
12
13
14
15
16
33
34
35
36
37
38
1
2
3
4
5
6
7
8
9
10
11
RXACCIN
EWCIN
EAMPOUT
EXPIN
VDAR
VSAR
RBPFOUT
RBPFIN
DEOUT
VREF
39
40
41
42
43
44
45
46
47
48
TQFP64 package
PIN DESCRIPTION
Pin name
Pin
Type
Function
AGND
1
AO
Signal ground. The signal ground is generated internally and is equal to
VDD/2. The analog ground needs an external capacitor connected to
system ground.
TX
2
AO
Transmitted data signal output. Connect this output through a 22nF
capacitor to the transmitter.
TAUDOUT
3
AO
TX audio output from the TX audio block..
TAUDIN
4
AI
TX audio input. The input for the TX audio signal, normally connected
through a 22nF capacitor to TAUDOUT
LPFIN
5
AI
Input for TX limiter, lowpass filter or GC6 depending on the position of
switches S15 and S16. The pin is normally left unconnected.
VSAT
6
G
Ground for TX. Connect to system ground.
VDAT
7
P
Power supply for TX block. Use a bypass capacitor between pins VSAT
and VDAT.
TXACCIN
8
AI
TX block extra Op Amp input. See application note in the APPLICATIONS
section.
TXACCOUT
9
AO
TX block Op Amp output.
PREIN
10
AI
Pre-emphasis filter input. Filter has a +6dB/octave (±1dB) frequency
response in the range 300Hz...3kHz.
COUT
11
AO
Compressor output signal. The compression ratio is 2:1



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