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PCM1750P Datasheet(PDF) 1 Page - Texas Instruments |
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PCM1750P Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 21 page  1 ® PCM1750 Dual CMOS 18-Bit Monolithic Audio ANALOG-TO-DIGITAL CONVERTER DESCRIPTION The PCM1750 is a low cost, dual 18-bit CMOS analog-to-digital converter optimized for dynamic sig- nal applications. The PCM1750 features true co-phased inputs with an internal sample/hold function for each channel. The PCM1750 also comes complete with an internal reference. Total power dissipation is less than 300mW max using ±5V voltage supplies. Low maxi- mum Total Harmonic Distortion + Noise (–88dB max) is 100% tested. The very fast PCM1750 is capable of 4X x audio bandwidth oversampling rates on both input channels simultaneously, providing greater free- dom to designers in selecting input anti-aliasing fil- ters. PCM1750 outputs serial data in a format that is com- patible with many digital filter chips and comes pack- aged in a space saving 28-pin plastic DIP or SOIC. Offset Adj Right 18-Bit SAR 18-Bit SAR CDAC Right S/H CDAC Left S/H Reference V Left S Left S Right Comp Clock Convert Offset Adj Left MSB Adj Right MSB Adj Left V Right IN IN Shift Register Control Logic OUT OUT Comp Reference Latch Latch FEATURES q DUAL 18-BIT LOW-POWER CMOS AUDIO A/D CONVERTER q FAST 4.5 µs MIN CONVERSION TIME INCLUDING S/H q VERY LOW MAX THD+N: –88dB Without External Adjust q COMPLETE WITH INTERNAL REFERENCE AND DUAL S/H FUNCTION q TWO CO-PHASE SAMPLED, ±2.75V AUDIO INPUTS q CAPABLE OF 4X PER CHANNEL OVERSAMPLING RATE q RUNS ON ±5V SUPPLIES AND DISSIPATES 300mW MAX q COMPACT 28-PIN PLASTIC DIP OR SOIC International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706 Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 ® PCM1750P PCM1750U © 1990 Burr-Brown Corporation PDS-1084B Printed in U.S.A. October, 1993 SBAS007 |
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