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CS4385-CQZ 데이터시트(PDF) 1 Page - Cirrus Logic |
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CS4385-CQZ 데이터시트(HTML) 1 Page - Cirrus Logic |
1 / 55 page Copyright © Cirrus Logic, Inc. 2008 (All Rights Reserved) http://www.cirrus.com 114 dB, 192 kHz 8-Channel D/A Converter Features Advanced Multi-bit Delta Sigma Architecture 24-bit Conversion Automatic Detection of Sample Rates up to 192 kHz 114 dB Dynamic Range -100 dB THD+N Direct Stream Digital Mode – Non-Decimating Volume Control – On-Chip 50 kHz Filter – Matched PCM and DSD Analog Output Levels Compatible with Industry-Standard Time Division Multiplexed (TDM) Serial Interface Selectable Digital Filters Volume Control with 1/2-dB Step Size and Soft Ramp Low Clock-Jitter Sensitivity +5 V Analog Supply, +2.5 V Digital Supply Separate 1.8 to 5 V Logic Supplies for the Control and Serial Ports Description The CS4385 is a complete 8-channel digital-to-analog system. This D/A system includes digital de-emphasis, half-dB step size volume control, ATAPI channel mix- ing, selectable fast and slow digital interpolation filters followed by an oversampled, multi-bit delta sigma mod- ulator which includes mismatch-shaping technology that eliminates distortion due to capacitor mismatch. Following this stage is a multi-element switched capac- itor stage and low-pass filter with differential analog outputs. The CS4385 also has a proprietary DSD processor which allows for volume control and 50 kHz on-chip fil- tering without an intermediate decimation stage. It also offers an optional path for direct DSD conversion by di- rectly using the multi-element switched capacitor array. The CS4385 is available in a 48-pin LQFP package in both Commercial (-40°C to +85°C) and Automotive (-40°C to +105°C) grades. The CDB4385 Customer Demonstration board is also available for device evalu- ation and implementation suggestions. Please see “Ordering Information” on page 54 for complete details. The CS4385 accepts PCM data at sample rates from 4 kHz to 216 kHz, DSD audio data, and delivers excel- lent sound quality. These features are ideal for multi- channel audio systems, including SACD players, A/V receivers, digital TV’s, mixing consoles, effects proces- sors, sound cards, and automotive audio systems. Control Port Supply = 1.8 V to 5 V Register/Hardware Configuration Internal Voltage Reference Reset TDM Serial Audio Input Digital Supply = 2.5 V Hardware Mode or I2C/SPI Software Mode Control Data Analog Supply = 5 V Eight Channels of Differential Outputs 8 8 PCM Serial Audio Input Volume Controls Digital Filters Switch-Cap DAC and Analog Filters Multi-bit ΔΣ Modulators DSD Audio Input DSD Processor -Volume control -50 kHz filter External Mute Control Mute Signals 2 8 Serial Audio Port Supply = 1.8 V to 5 V FEB '08 DS671F2 CS4385 |
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