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CS5181-BL Datasheet(PDF) 1 Page - Cirrus Logic |
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CS5181-BL Datasheet(HTML) 1 Page - Cirrus Logic |
1 / 24 page 1 Copyright © Cirrus Logic, Inc. 1999 (All Rights Reserved) Cirrus Logic, Inc. P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.crystal.com Preliminary Product Information This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice. CS5181 ∆Σ Modulator & 400 kHz to 625 kHz 16-Bit ADC Features l 16-Bit Delta-Sigma A/D Converter l Fully Differential Input with 4.0 Vpp Range l Dynamic Range: 93 dB l Spurious Free Dynamic Range: 90 dBc l Harmonic Distortion: 89 dB l Up to 625 kHz Output Word Rate l No Missing Codes l Non-Aliasing Low-Pass Digital Filter l High Speed 3-Wire Serial Interface l Supply Requirements: - VA+ = 5 V, VD+ = 3.3 V: 570 mW l Modulator Output Mode l Power-Down Mode Description CS5181 is a fully calibrated high-speed ∆Σ analog-to- digital converter, capable of 625 kSamples/second out- put word rate (OWR). The OWR scales with the master clock. It consists of a 5th order ∆Σ modulator, decimation filter, and serial interface. The chip can use the 2.375 V on-chip voltage reference, or an external 2.5 V refer- ence. The input voltage range is 1.6 × VREFIN Vpp fully differential. Multiple CS5181s can be fully synchronized in multi-channel applications with a sync signal. The part has a power-down mode to minimize power consump- tion at times of system inactivity. The high speed digital I/O lines have complementary signals to help reduce ra- diated noise from traces on the PC board layout. The CS5181 can also be operated in modulator-only mode which provides the delta-sigma modulator bitstream as the output. ORDERING INFORMATION CS5181-BL -40 °C to +85 °C 28-pin PLCC I AIN+ AIN- VREF+ VREFIN VREFOUT VREFCAP PWDN SYNC RESET MODE VA+ AGND VD+ DGND MCLK MCLK MFLAG SDO SDO SCLK SCLK FSO Decimator Clock x1.6 Reference Timing and Control Serial Interface ∆Σ Modulator VREF- Mode Selector APR ‘99 DS250PP1 |
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