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CS5345 Datasheet(PDF) 1 Page - Cirrus Logic |
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CS5345 Datasheet(HTML) 1 Page - Cirrus Logic |
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1 / 39 page  Advance Product Information This document contains information for a new product. Cirrus Logic reserves the right to modify this product without notice. 1 Copyright © Cirrus Logic, Inc. 2004 (All Rights Reserved) Cirrus Logic, Inc. www.cirrus.com CS5345 105 dB, 24-Bit, 192 kHz Stereo Audio ADC JUNE ‘04 DS658A1 A/D Features Multi-bit Delta Sigma modulator 105 dB dynamic range -95 dB THD+N Stereo 6:1 Input Multiplexer Programmable Gain Amplifier (PGA) – +/- 12 dB gain, 0.5 dB step size – Zero crossing, click-free transitions Stereo microphone inputs – +32 dB gain stage – Low noise bias supply Up to 192 kHz sampling rates Selectable serial audio interface formats – Left justified up to 24-bit – I²S up to 24-bit High pass filter or DC offset calibration System Features Power down mode +3.3 V to +5 V analog power supply, nominal +3.3 V to +5 V digital power supply, nominal Direct interface with 1.8 V to 5 V logic levels Pin-compatible with CS4245 General Description The CS5345 integrates an analog multiplexer, program- mable gain amplifier, and stereo audio analog-to-digital converter. The CS5345 performs stereo analog-to-digital (A/D) conversion of up to 24-bit serial values at sample rates up to 192 kHz. A 6:1 stereo input multiplexer is included for selecting between line level or microphone level inputs. The mi- crophone input path includes a +32 dB gain stage and a low noise bias voltage supply. The PGA is available for line or microphone inputs and provides gain/attenuation of ±12 dB in 0.5 dB steps. The output of the PGA is followed by an advanced 5th- order, multi-bit delta sigma modulator and digital filter- ing/decimation. Sampled data is transmitted by the serial audio interface at rates from 4 kHz to 192 kHz in either slave or master mode. Integrated level translators allow easy interfacing be- tween the CS5345 and other devices operating over a wide range of logic levels. ORDERING INFORMATION CS5345-CQZ -10° to 70° C 48-pin LQFP CDB5345 Evaluation Board 1.8 V to 5 V Line a r P hase A nti-A lias F ilte r Inte rna l V oltage Re fe rence Multibit Oversa mpling ADC Multibit Ove rsa mpling AD C Line a r P hase A nti-A lias F ilte r High P a ss Filte r High P a ss Filte r S tere o Input 1 Se rial A udio Output 3.3 V to 5 V 3.3 V to 5 V MU X PG A Re gister C onfigura tion Left PG A O utput R ight P G A O utput S tere o Input 2 S tere o Input 3 S tere o Input 4 / Mic Input 1 & 2 S tere o Input 5 S tere o Input 6 PG A +32 d B +32 d B Re se t I²C /SPI Control D ata Inte rrupt Ove rflow |
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