CS5344

CS5343/4 98 dB, 96 kHz, Multi-Bit Audio A/D Converter Features Advanced Multi-Bit ΔΣ Architecture 24-bit Conversion Supports Audio Sample Rates Up to 108 kHz 98 dB Dynamic Range at 5 V -92 dB THD+N at 5 V Low-Latency Digital Filter High-Pass Filter to Remove DC Offsets Single +3.3 V or +5 V Power Supply Power Consumption < 40 mW at 3.3 V Master or Slave Operation Slave Mode Speed Auto-Detect Master Mode Default Settings 256x or 384x MCLK/LRCK Ratio CS5343 Supports I²S Audio Format CS5344 Supports Left-Justified Audio Format General Description The CS5343/4 is a complete analog-to-digital converter for digital audio systems. It performs sampling, analogto-digital conversion, and anti-alias filtering, generating 24-bit values for both left and right inputs in serial form at sample rates up to 108 kHz per channel. The CS5343/4 uses a 3rd-order, multi-bit Delta-Sigma modulator followed by a digital filter, which removes the need for an external anti-alias filter. The CS5343/4 also features a high-impedance sampling network which eliminates costly external components such as op-amps. The CS5343/4 is available in a 10-pin TSSOP package for both Commercial (-40° to +85° C) and Automotive grades (-40° to +105° C). The CDB5343 Customer Demonstration Board is also available for device evaluation and implementation suggestions. Please refer to the “Ordering Information” on page 21 for complete details. The CS5343/4 is ideal for audio systems requiring wide dynamic range, negligible distortion and low noise, such as set-top boxes, DVD-karaoke players, DVD recorders, A/V receivers, and automotive applications. VA 3.3 V to 5 V Single-Ended Analog Input AINL High-Z Sampling Network High-Pass High-Pass Filter Low-Latency Digital Filters Auto-detect MCLK Divider Master Clock FILT+ VQ Internal Reference Voltages Serial Port Slave Mode Auto-detect SCLK LRCK Single-Ended Analog Input AINR High-Z Sampling Network High-Pass Filter Low-Latency Digital Filters SDOUT http://www.cirrus.com Copyright © Cirrus Logic, Inc. 2007 (All Rights Reserved) MARCH '07 DS687F1 CS5343/4 TABLE OF CONTENTS 1. PIN DESCRIPTIONS .............................................................................................................................. 4 2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 5 RECOMMENDED OPERATING CONDITIONS ..................................................................................... 5 ABSOLUTE MAXIMUM RATINGS ......................................................................................................... 5 ANALOG CHARACTERISTICS - COMMERCIAL GRADE (-CZZ) ......................................................... 6 ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE (-DZZ) ......................................................... 7 DIGITAL FILTER CHARACTERISTICS ................................................................................................ 8 DC ELECTRICAL CHARACTERISTICS ................................................................................................ 8 DIGITAL CHARACTERISTICS ............................................................................................................... 9 SYSTEM CLOCKING AND SERIAL AUDIO INTERFACE ................................................................... 10 3. TYPICAL CONNECTION DIAGRAM ................................................................................................... 12 4. APPLICATIONS ................................................................................................................................... 13 4.1 Operation as Clock Master or Slave ............................................................................................... 13 4.1.1 Slave Mode Operation ........................................................................................................... 13 4.1.2 Master Mode Operation ......................................................................................................... 14 4.1.2.1 Master Mode Speed Selection ................................................................................... 14 4.1.3 Master Clock ......................................................................................................................... 14 4.2 Serial Audio Interface ..................................................................................................................... 15 4.3 Digital Interface ............................................................................................................................... 15 4.4 Analog Connections ....................................................................................................................... 15 4.4.1 Component Values ................................................................................................................ 16 4.5 Grounding and Power Supply Decoupling ...................................................................................... 16 4.6 Synchronization of Multiple Devices ............................................................................................... 17 5. FILTER PLOTS .................................................................................................................................... 17 6. PARAMETER DEFINITIONS ................................................................................................................ 19 7. PACKAGE DIMENSIONS .................................................................................................................... 20 THERMAL CHARACTERISTICS .......................................................................................................... 20 8. ORDERING INFORMATION ................................................................................................................ 21 9. REVISION HISTORY ............................................................................................................................ 21 LIST OF FIGURES Figure 1. CS5343 I²S Serial Audio Interface .............................................................................................. 11 Figure 2. CS5344 Left-Justified Serial Audio Interface .............................................................................. 11 Figure 3. Typical Connection Diagram....................................................................................................... 12 Figure 4. CS5343 I²S Serial Audio Interface .............................................................................................. 15 Figure 5. CS5344 Left-Justified Serial Audio Interface .............................................................................. 15 Figure 6. CS5343/4 Analog Input Network................................................................................................. 15 Figure 7. CS5343/4 Example Analog Input Network.................................................................................. 16 Figure 8. Single-Speed Mode Stopband Rejection .................................................................................... 17 Figure 9. Single-Speed Mode Transition Band .......................................................................................... 17 Figure 10. Single-Speed Mode Transition Band (Detail)............................................................................ 17 Figure 11. Single-Speed Mode Passband Ripple ...................................................................................... 17 Figure 12. Double-Speed Mode Stopband Rejection................................................................................. 18 Figure 13. Double-Speed Mode Transition Band....................................................................................... 18 Figure 14. Double-Speed Mode Transition Band (Detail) .......................................................................... 18 Figure 15. Double-Speed Mode Passband Ripple..................................................................................... 18 2 DS687F1 CS5343/4 LIST OF TABLES Table 1. Master/Slave Mode Selection ...................................................................................................... 13 Table 2. Speed Modes and the Associated Sample Rates (Fs) in Slave Mode......................................... 13 Table 3. Speed Modes and the Associated Sample Rates (Fs) in Master Mode....................................... 14 Table 4. Speed Mode Selection in Master Mode ....................................................................................... 14 Table 5. Common MCLK Frequencies in Master and Slave Modes .......................................................... 14 Table 6. Analog Input Design Parameters ................................................................................................. 16 DS687F1 3 CS5343/4 1. PIN DESCRIPTIONS SDOUT SCLK LRCK MCLK FILT+ 1 2 3 4 5 10 9 8 7 6 VA GND AINR VQ AINL Pin Name Pin # SDOUT SCLK LRCK MCLK FILT+ AINL AINR VQ GND VA 1 2 3 4 5 6 8 7 9 10 Pin Description Serial Audio Data Output (Output) - Output for two’s complement serial audio data. Also selects Master or Slave Mode; See Section 4.1 on page 13 for details. Serial Clock (Input/Output) - Serial clock for the serial audio interface. Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the serial audio data line. Master Clock (Input) - Clock source for the delta-sigma modulator and digital filters. Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits. Analog Input (Input) - The full-scale analog input level is specified in the Analog Characteristics specification table. Quiescent Voltage (Output) - Filter connection for the internal quiescent reference voltage. Ground (Input) - Ground reference. Must be connected to analog ground. Power (Input) - Positive power supply for the digital and analog sections. 4 DS687F1 CS5343/4 2. CHARACTERISTICS AND SPECIFICATIONS RECOMMENDED OPERATING CONDITIONS GND = 0 V, all voltages with respect to GND. Parameter Power Supplies Ambient Operating Temperature Commercial (-CZZ) Automotive (-DZZ) Symbol VA TAC TAD Min 3.1 4.75 -40 -40 Typ 3.3 5.0 - Max 3.5 5.25 85 105 Unit V V °C °C ABSOLUTE MAXIMUM RATINGS GND = 0 V, all voltages with respect to GND. (Note 1) Parameter DC Power Supplies Input Current Input Voltage Ambient Operating Temperature (Power Applied) Storage Temperature (Note 2) (Note 3) Symbol VA Iin VIN TA Tstg Min -0.3 -10 -0.7 -50 -65 Max +6.0 +10 VA+0.7 +115 +150 Unit V mA V °C °C Notes: 1. Operation beyond these limits may result in permanent damage to the device. Normal operation is not guaranteed at these extremes. 2. Any pin except supplies. Transient currents of up to ±100 mA on the analog input pins will not cause SCR latch-up. 3. The maximum over/under voltage is limited by the input current. DS687F1 5 CS5343/4 ANALOG CHARACTERISTICS - COMMERCIAL GRADE (-CZZ) Test conditions (unless otherwise specified): TA = 25° C; Input test signal is a 997 Hz sine wave through recommended inputs as seen in Figure 6 on page 15; source impedance less than or equal to 2.5 kΩ; valid with FILT+ and VQ components as shown in Figure 3 on page 12; measurement bandwidth is 10 Hz to 20 kHz; Fs = 48 kHz or 96 kHz. Dynamic Performance for Commercial Grade Symbol Dynamic Range Total Harmonic Distortion + Noise A-weighted unweighted (Note 4) -1 dB THD+N -20 dB -60 dB Min 91 88 - VA = 3.3 V Typ 94 91 -89 -71 -31 Max -86 Min 95 92 - VA = 5.0 V Typ 98 95 -92 -75 -35 Max -89 Unit dB dB dB dB dB Dynamic Performance for Commercial Grade Min Interchannel Isolation - VA = 3.3 V and VA = 5.0 V Typ 90 Max Unit dB DC Accuracy Interchannel Gain Mismatch Gain Error Gain Drift -3 0.1 +3 dB % ppm/°C ±100 0.568*VA 0.559*VA 7.5 Analog Input Characteristics Full-scale Input Voltage Full-scale Input Voltage Input Impedance VA = 3.3 V nom VA = 5 V nom 0.560*VA 0.552*VA 0.575*VA 0.567*VA Vpp Vpp MΩ Notes: 4. Referred to the typical full-scale input voltage 6 DS687F1 CS5343/4 ANALOG CHARACTERISTICS - AUTOMOTIVE GRADE (-DZZ) Test conditions (unless otherwise specified): TA = -40° C to 85° C; Input test signal is a 997 Hz sine wave through recommended inputs as seen in Figure 6 on page 15; source impedance less than or equal to 2.5 kΩ; valid with FILT+ and VQ components as shown in Figure 3 on page 12; measurement bandwidth is 10 Hz to 20 kHz; Fs = 48 kHz or 96 kHz. Dynamic Performance for Automotive Grade Symbol Dynamic Range Total Harmonic Distortion + Noise A-weighted unweighted (Note 5) -1 dB THD+N -20 dB -60 dB VA = 3.1 to 3.5 V Min 86 83 Typ 94 91 -88 -71 -31 Max -76 - VA = 4.75 to 5.25 V Min 90 87 Typ 98 95 -91 -75 -35 Max -84 Unit dB dB dB dB dB Dynamic Performance for Automotive Grade Interchannel Isolation VA = 3.1 V to 3.5 V and VA = 4.75 V to 5.25 V Min Typ 90 Max Unit dB DC Accuracy Interchannel Gain Mismatch Gain Error Gain Drift -3 0.1 +3 dB % ppm/°C ±100 0.567*VA 0.560*VA 7.5 Analog Input Characteristics Full-scale Input Voltage Full-scale Input Voltage Input Impedance VA = 3.1 V to 3.5 V VA = 4.75 V to 5.25 V 0.523*VA 0.543*VA 0.612*VA 0.573*VA Vpp Vpp MΩ Notes: 5. Referred to the typical full-scale input voltage DS687F1 7 CS5343/4 DIGITAL FILTER CHARACTERISTICS Parameter Passband Passband Ripple Stopband Stopband Attenuation (-0.1 dB) Symbol Min 0 -0.025 0.560 69 Typ 12/Fs 9/Fs 1 20 10 - Max 0.489 0.025 0 Unit Fs dB Fs dB s s Hz Hz Deg dB Single-Speed Mode Double-Speed Mode Fs = 4 - 54 kHz tgd tgd (Note 6) (Note 6) - Total Group Delay (Fs = Output Sample Rate) Fs = 86 - 108 kHz Total Group Delay (Fs = Output Sample Rate) High-Pass Filter Characteristics Frequency Response Phase Deviation Passband Ripple -3.0 dB -0.13 dB @ 20 Hz Notes: 6. Response shown is for Fs equal to 48 kHz. Filter characteristics scale with Fs. DC ELECTRICAL CHARACTERISTICS GND = 0 V, all voltages with respect to 0 V. MCLK=12.288 MHz; Master Mode. VA = 3.3 V Parameter Power Supply Current Power Supply Current Power Consumption (Normal Operation) (Power-Down Mode) (Note 7) (Normal Operation) (Power-Down Mode) (Note 7) VA = 5.0 V Typ 12 40 60