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SA5752 Datasheet(PDF) 2 Page - NXP Semiconductors |
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SA5752 Datasheet(HTML) 2 Page - NXP Semiconductors |
2 / 13 page Philips Semiconductors Product specification SA5752 Audio processor – companding, VOX and amplifier section 2 1997 Nov 07 853-1721 18666 DESCRIPTION The SA5752 is a high performance low power audio signal processing system especially designed to meet the requirements for small size and low voltage operation of hand-held equipment. The SA5752 subsystem includes a low noise microphone preamplifier with adustable gain, a noise cancellation switching amplifier with adjustable threshold, a voice operated transmitter (VOX) switch, VOX control, an audio compressor with buffered input, audio expandor, and an internal bandgap voltage regulator with power down capability. When used with Philips Semiconductors’ SA5753, the complete audio processing function of an AMPS or TACS cellular telephone is easily implemented. The system also meets the requirements of the proposed NAMPS or NTACS specifications. The SA5752 can also be used without the SA5753 in a wide variety of radio communications applications. FEATURES • Operating voltage range: 2V to 5.5V • Miniature SSOP • High performance • Adjustable VOX and noise cancellation threshold • Adjustable gain preamplifier • Audio companding • ESD protected • Open collector VOX output • Logic inputs CMOS compatible • Power down mode • Few external components • Meets AMPS/TACS/NAMPS/NTACS requirements PIN CONFIGURATION MICIN RECTGRES VOXOUT VOXTR GND VREF EXPOUT HPDN VOXCTL COMPCAP2 COMPCAP3 NCANOUT DK PACKAGE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 20 19 18 17 16 15 PREAMPGRES NCANCAP VCC EXPCAP COMPIN COMPCAP1 COMPOUT EXPIN SA5752 SR00659 Figure 1. Pin Configuration BENEFITS • Very compact applications • Long battery life in portable equipment • Complete cellular audio function with the SA5753 APPLICATIONS • Cellular radio • Mobile communications • High performance cordless telephones • 2-way radio ORDERING INFORMATION DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG # 20-Pin Plastic Shrink Small Outline Package (SSOP) -40 to +85 °C SA5752DK SOT266-1 |
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