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CS5516-AS Scheda tecnica(PDF) 1 Page - Cirrus Logic |
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CS5516-AS Scheda tecnica(HTML) 1 Page - Cirrus Logic |
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1 / 41 page  1 Copyright © Cirrus Logic, Inc. 1997 (All Rights Reserved) Cirrus Logic, Inc. Crystal Semiconductor Products Division P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.crystal.com CS5516 CS5520 16-Bit/20-Bit Bridge Transducer A/D Converter Features l On-chip Instrumentation Amplifier l On-chip Programmable Gain Amplifier l On-Chip 4-Bit D/A For Offset Removal l Dynamic Excitation Options l Linearity Error: ±0.0015% FS - 20-bit, No Missing Codes l CMRR at 50/60 Hz > 200 dB l System Calibration Capability with calibration read/write option l 3-, 4-, or 5-wire Serial Communications Port l Low Power Consumption: 40 mW - 10 µW Standby Mode for Portable applications Description The CS5516 and CS5520 are complete solutions for dig- itizing low level signals from strain gauges, load cells, and pressure transducers. Any family of mV output transducers, including those requiring bridge excitation, can be interfaced directly to the CS5516 or CS5520. The devices offer an on-chip software programmable instru- mentation amplifier block, choice of DC or AC bridge excitation, and software selectable reference and signal demodulation. The CS5516 uses delta-sigma modulation to achieve 16-bit resolution at output word rates up to 60 Sps. The CS5520 achieves 20-bit resolution at output word rates up to 60 Sps. The CS5516 and CS5520 sample at a rate set by the user in the form of either an external CMOS clock or a crystal. On-chip digital filtering provides rejection of all frequencies above 12 Hz for a 4.096 MHz clock. The CS5516 and CS5520 include system calibration to null offset and gain errors in the input channel. The digi- tal values associated with the system calibration can be written to, or read from, the calibration RAM locations at any time via the serial communications port. The 4-bit DC offset D/A converter, in conjunction with digital cor- rection, is initially used to zero the input offset value. ORDERING INFORMATION See page 29. I $,1 $,1 95() 95() %ULGJH %; ; ; 6\QF *DLQ %ORFN ELW '$ &RQYHUWHU Σ %; 9$ 9$ $*1' $*1' &KDQQHO 'HOWD6LJPD 0RGXODWRU ,1 287 ,1 287 &KDQQHO ),5 )LOWHU &DOLEUDWLRQ 0'59 0'59 9' 9' '*1' ;,1 ;287 602'( 6&/. '5'< &6 567 6HULDO ,QWHUIDFH ÷ 62' 6,' MAR ‘95 DS74F1 Copyright © Cirrus Logic, Inc. 2005 (All Rights Reserved) http://www.cirrus.com CS5516 CS5520 16-bit & 20-bit Bridge Transducer A/D Converters SEP ‘05 DS74F2 |
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