MAS9191A Просмотр технического описания (PDF) - Micro Analog systems
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MAS9191A Datasheet PDF : 36 Pages
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PIN CONFIGURATION
DA9191A.000
July 31, 1997
AGND
1
TX
2
TAUDOUT 3
TAUDIN
4
LPFIN
5
VSAT
6
VDAT
7
TXACCIN
8
TXACCOUT 9
PREIN
10
COUT
11
CAMP2I
12
CWCIN
13
CAMP20 14
COMPIN 15
MICOUT 16
48 VREF
47 DEOUT
46 RBPFIN
45 RBPFOUT
44 VSAR
43 VDAR
42 EXPIN
41 EAMPOUT
40 EWCIN
39 EXPOUT
38 RXACCIN
37 RXACCOUT
36 RAUDIN
35 EST
34 STGT
33 EINR
TQFP64 package
PIN DESCRIPTION
Pin name
Pin
AGND
1
TX
2
TAUDOUT
3
TAUDIN
4
LPFIN
5
VSAT
6
VDAT
7
TXACCIN
8
TXACCOUT
9
PREIN
10
COUT
11
Type
AO
AO
AO
AI
AI
G
P
AI
AO
AI
AO
Function
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.
Transmitted data signal output. Connect this output through a 22nF
capacitor to the transmitter.
TX audio output from the TX audio block..
TX audio input. The input for the TX audio signal, normally connected
through a 22nF capacitor to TAUDOUT
Input for TX limiter, lowpass filter or GC6 depending on the position of
switches S15 and S16. The pin is normally left unconnected.
Ground for TX. Connect to system ground.
Power supply for TX block. Use a bypass capacitor between pins VSAT
and VDAT.
TX block extra Op Amp input. See application note in the APPLICATIONS
section.
TX block Op Amp output.
Pre-emphasis filter input. Filter has a +6dB/octave (±1dB) frequency
response in the range 300Hz...3kHz.
Compressor output signal. The compression ratio is 2:1
2
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