SA5750N 데이터 시트보기 (PDF) - Philips Electronics
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SA5750N Datasheet PDF : 7 Pages
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Philips Semiconductors
Audio processor - companding and amplifier section
Product specification
NE/SA5750
PIN DESCRIPTIONS
PIN NO.
SYMBOL
1
MICIN
2
PREAMPGRES
3
RECTGRES
4
NCANCAP
5
VOXOUT
6
VOXCTL
7
VOXTR
8
GND
9
VREF
10
HPDN
11
SPKROUT
12
EAROUT
13
EARIN
14
SPKRIN
15
EXPCAp
16
EXPOUT
17
EXPIN
18
VCC
19
COMPCAP2
20
COMPOUT
21
COMPCAP3
22
COMPCAP1
23
COMPIN
24
NCANOUT
BLOCK DIAGRAM
DESCRIPTION
Microphone input
Preamplifier gain resistor
Reactifier gain resistor
Noise cancellation timing capacitor
Voice operated transmission output
Voice operated transmission control
Voice operated transmission threshold resistor
Ground
Reference voltage
Hardware power down
Speaker output
Earpiece output
Earpiece input, side tone input
Speaker input
Expandor timing capacitor
Expandor output
Expandor input
Positive supply
Compressor timing capacitor 2
Compressor output
Compressor timing capacitor 3
Compressor timing capacitor 1
Compressor input
Noise cancellation output
24
23
22
21
20
19
18
17
16
15
14
13
BUFFER
EXPANDOR
COMPANDOR
VCC
NE/SA5750
NOISE
CANCEL
PREAMP
VOX
BANDGAP
VOLTAGE REF
1
2
3
4
5
6
7
8
9
10
11
12
Figure 2. Block Diagram
SR00651
1990 Aug 17
1045
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