CDB43L42 Cirrus Logic Inc, CDB43L42 Datasheet
CDB43L42
Specifications of CDB43L42
Related parts for CDB43L42
CDB43L42 Summary of contents
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... P.O. Box 17847, Austin, Texas 78760 (512) 445 7222 FAX: (512) 445 7581 http://www.cirrus.com Description The CDB43L42 evaluation board is an excellent means for quickly evaluating the CS43L42 24-bit, stereo D/A converter. Evaluation requires an analog signal analyz- er, a digital signal source for controlling the CS43L42 (for control port mode only) and a power sup- ply. Analog headphone outputs are provided via a 1/8” ...
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... TABLE OF CONTENTS 1. CDB43L42 SYSTEM OVERVIEW .................................................................. 4 2. CS43L42 DIGITAL TO ANALOG CONVERTER ............................................ 4 3. CS8415A DIGITAL AUDIO RECEIVER ......................................................... 4 4. CS8415A DATA FORMAT ............................................................................. 4 5. HEADPHONE OUTPUT .................................................................................. 4 6. LINE OUTPUT ................................................................................................ 4 7. INPUT/OUTPUT FOR CLOCKS AND DATA ................................................. 4 8. POWER SUPPLY CIRCUITRY ....................................................................... 4 9. GROUNDING AND POWER SUPPLY DECOUPLING .................................. 5 10 ...
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... Figure 22.Line Output - THD+N versus Amplitude at 1.8 V ............................... 21 Figure 23.Line Output - THD+N versus Amplitude at 3.0 V ............................... 21 Figure 24.Line Output - FFT of 1 kHz Sine Wave at 1.8 V ................................. 21 Figure 25.Line Output - FFT of 1 kHz Sine Wave at 3.0 V ................................. 21 Figure 26.Silkscreen Top ................................................................................... 22 Figure 27.Top Side ............................................................................................. 23 Figure 28.Bottom Side ....................................................................................... 24 DS481DB2 CDB43L42 3 ...
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... LINE OUTPUT The CS43L42 line level outputs are available via RCA jacks. An external mute circuit is included on the CDB43L42 to ensure an absolute minimum of extraneous clicks and pops during power-up. See Figure 12 for details. 7. INPUT/OUTPUT FOR CLOCKS AND DATA ...
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... Audio Precision systems, either the S2-AES17LP 20 kHz brickwall filter must be installed or a low pass filter must be used between the CDB43L42 and the Audio Precision for proper measurements external filter is used, it must provide at least attenuation at 120 kHz. This can be achieved with a simple 3-pole filter. ...
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... INT *EXT *0 1 *000 001 010 011 100 Table 2. CDB43L42 Jumper and Switch settings CDB43L42 SIGNAL PRESENT 2 C mode control port signals FUNCTION SELECTED Configures CDB43L42 to program the µC Configures CDB43L42 for normal operation Selects High Rate Mode Selects Base Rate Mode ...
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... DS481DB2 CDB43L42 7 ...
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... CDB43L42 CP/SA DS481DB2 ...
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... DS481DB2 CDB43L42 9 ...
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... CDB43L42 DS481DB2 ...
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... OPTICAL INPUT DIGITAL INPUT DS481DB2 OPT1 6 C29 C30 4 5 .01UF TORX173 X7R GND GND GND J5 C28 .01UF 1 3 X7R NC 4 R29 2 CON_RCA_RA 75 GND GND Figure 5. Digital Audio Inputs CDB43L42 .01UF RXP X7R L7 VD_+5 47UH RXN 11 ...
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... GND 74LVC125AD GND U5 14 VCC 4 1/PRE 3 5 1CLK 1/CLR 1 2/PRE 2Q 11 2CLK 2/Q 13 2/CLR 7 GND SN74LVC74AD GND Figure 6. MCLK Divider and Level Shifter CDB43L42 VL C39 .1UF X7R GND VL C8 .1UF X7R GND (MCLK) HDR4 HDR1X3 1 (HRM /2) 2 MCLK_B 3 MCLK_A (BRM x1) DS481DB2 ...
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... DS481DB2 CDB43L42 13 ...
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... PA7 5 PD0 ICP U10 AT90S8515_4AC PD1 ALE 8 PD2 OC1B 9 PD3 PC7 TP7 10 PD4 PC6 TP8 11 PD5 PC5 GND RESET_84 3.6864MHZ C21 C24 39PF 39PF COG COG GND GND Figure 8. Control Port Microcontroller CDB43L42 0 1 VD_ GND VL R40 R41 2K 2K AD0/CS/DEM0_A CP/ DS481DB2 ...
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... DS481DB2 CDB43L42 15 ...
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... CDB43L42 0 R42 DS481DB2 ...
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... DS481DB2 CDB43L42 17 ...
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... CDB43L42 DS481DB2 ...
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... DS481DB2 CDB43L42 19 ...
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... B -70 -80 -90 -100 -110 -120 -130 10k 20k 20 CDB43L42 50 100 200 500 Figure 15. Headphone Output - Frequency Response at 3.0 V -55 -50 -45 -40 -35 -30 -25 -20 -15 Amplitude (dB) Figure 17. Headphone Output - THD+N versus Amplitude at 3 100 200 500 Figure 19. Headphone Output - FFT of 1 kHz Sine Wave at 3 ...
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... THD+N versus Amplitude at 3 -10 -20 -30 -40 -50 - -70 -80 -90 -100 -110 -120 -130 10k 20k CDB43L42 50 100 200 500 -50 -45 -40 -35 -30 -25 -20 -15 -10 Amplitude (dB) Figure 23. Line Output - 50 100 200 500 Figure 25. Line Output - FFT of 1 kHz Sine Wave at 3.0 V ...
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... CDB43L42 DS481DB2 ...
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... DS481DB2 CDB43L42 23 ...
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... CDB43L42 DS481DB2 ...
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Notes • ...
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