CS5381 120 dB, 192 kHz, Multi-Bit Audio A/D Converter Features General Description Advanced Multi-bit Delta-Sigma Architecture The CS5381 is a complete analog-to-digital converter for digital audio systems. It performs sampling, analog- 24-bit Conversion to-digital conversion, and anti-alias filtering - generating 120 dB Dynamic Range 24-bit values for both left and right inputs in serial form at sample rates up to 216 kHz per channel. -110 dB THD+N The CS5381 uses a 5th-order, multi-bit delta-sigma Supports All Audio Sample Rates Including modulator followed by digital filtering and decimation, 192 kHz which removes the need for an external anti-alias filter. 260 mW Power Consumption The ADC uses a differential architecture which provides excellent noise rejection. High-Pass Filter or DC Offset Calibration The CS5381 is available in 24-pin TSSOP and SOIC Supports Logic Levels between 5 and 2.5 V packages for Commercial grade (-10 to +70 C). The Differential Analog Architecture CDB5381 Customer Demonstration board is also avail- able for device evaluation and implementation Low-Latency Digital Filtering suggestions. Please refer to the Ordering Information Overflow Detection on page 22. Pin-Compatible with the CS5361 The CS5381 is ideal for audio systems requiring wide dynamic range, negligible distortion, and low noise - such as A/V receivers, DVD-R, CD-R, digital mixing consoles, and effects processors. Analog Supply Digital Supply Interface Supply 5 V 3.3 V to 5 V 2.5 V to 5 V Internal Voltage Reference Reset Mode Configuration Switch-Cap Digital Differential ADC Filters Inputs HPF OVFL Differential Switch-Cap Digital Inputs ADC Filters PCM Serial Audio Output Copyright Cirrus Logic, Inc. 2005 JULY 05 (All Rights Reserved) CS5381 TABLE OF CONTENTS 1. PIN DESCRIPTIONS ............................................................................................................................... 4 2. CHARACTERISTICS AND SPECIFICATIONS....................................................................................... 5 SPECIFIED OPERATING CONDITIONS .................................................................................................... 5 ABSOLUTE MAXIMUM RATINGS............................................................................................................... 5 ANALOG CHARACTERISTICS (CS5381-KSZ/-KZZ).................................................................................. 6 DIGITAL FILTER CHARACTERISTICS....................................................................................................... 7 SWITCHING CHARACTERISTICS - SERIAL AUDIO PORT .................................................................... 10 DC ELECTRICAL CHARACTERISTICS.................................................................................................... 13 DIGITAL CHARACTERISTICS .................................................................................................................. 13 THERMAL CHARACTERISTICS .............................................................................................................. 13 TYPICAL CONNECTION DIAGRAM ......................................................................................................... 14 3. APPLICATIONS .................................................................................................................................... 15 3.1 Operational Mode/Sample Rate Range Select.............................................................................. 15 3.2 System Clocking............................................................................................................................ 15 3.2.1 Master Mode ........................................................................................................................ 15 3.2.2 Slave Mode .......................................................................................................................... 16 3.3 Power-Up Sequence ..................................................................................................................... 16 3.4 Analog Connections ...................................................................................................................... 16 3.5 High-Pass Filter and DC Offset Calibration .................................................................................. 17 3.6 Overflow Detection ........................................................................................................................ 18 3.6.1 OVFL Configuration ............................................................................................................. 18 3.6.2 OVFL Output Timing ............................................................................................................ 18 3.7 Grounding and Power Supply Decoupling..................................................................................... 18 3.8 Synchronization of Multiple Devices.............................................................................................. 18 3.9 Capacitor Size on the Reference Pin (FILT+)................................................................................ 19 4. PACKAGE DIMENSIONS ..................................................................................................................... 20 5. ORDERING INFORMATION ................................................................................................................. 22 7. REVISION HISTORY............................................................................................................................. 24 2 DS563F2