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SA5752DK Datasheet(PDF) 3 Page - NXP Semiconductors |
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SA5752DK Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 13 page Philips Semiconductors Product specification SA5752 Audio processor – companding, VOX and amplifier section 1997 Nov 07 3 PIN DESCRIPTIONS PIN NO. SYMBOL DESCRIPTION 1 MICIN Microphone input 2 PREAMPGRES Preamplifier gain resistor 3 RECTGRES Rectifier gain resistor 4 NCANCAP Noise cancellation timing capacitor 5 VOXOUT Voice operated transmission output 6 VOXTR Voice operated transmission threshold resistor 7 GND Ground 8 VREF Reference voltage 9 VCC Positive supply 10 EXPCAP Expandor timing capacitor 11 EXPOUT Expandor output 12 EXPIN Expandor input 13 HPDN Hardware power-down 14 VOXCTL Voice operated transmission control 15 COMPCAP2 Compressor capacitor 2 DC block 16 COMPOUT Compressor output 17 COMPCAP1 Compressor timing capacitor 1 18 COMPCAP3 Compressor capacitor 3 DC block 19 COMPIN Compressor input 20 NCANOUT Noise cancellation output BLOCK DIAGRAM NOISE COMPANDOR CANCEL EXPANDOR BANDGAP VOLTAGE REF VOX SA5752 BUFFER PREAMP 12 11 20 19 18 17 16 15 14 13 10 9 8 7 6 5 4 3 2 1 SR00660 Figure 2. Block Diagram |
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