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B !$ 4HEFORMATOFTHECAPTUREDDATAVARIESACCORDINGTOTHEREGISTER SELECTlELDS$ATACAPTUREDFROMTHEMULT?OUTSETTINGISIN TWOSCOMPLEMENTFORMATSOTHATAFULL SCALEINPUTSIGNALWILL PRODUCEAFULL SCALEDIGITALOUTPUTASSUMINGNOPROCESSING )F THEPARAMETERSARESETSUCHTHATTHEINPUT TO OUTPUTGAINISMORE THAND"THENTHEDIGITALOUTPUTWILLBECLIPPED $ATACAPTUREDFROMTHE$"?/54SETTINGISINFORMATWHERE 4 THEACTUALRMSD"LEVELISEQUALTOn $"?/54 )NTHIS 4 EQUATION$"?/54ISTHEVALUETHATISCAPTURED)TFOLLOWSTHATIN 4 THISDATAFORMATTHEACTUALOUTPUTREADINGSWILLRANGEFROMnD" TOD"4HE!$USESTHECONVENTIONTHATD"ISTHERMS VALUEOFTHEFULL SCALEDIGITALSIGNAL 4HE30)CAPTUREREGISTERSCANBEACCESSEDBYREADINGFROM30) ,OCATIONSFOR30)#APTURE2EGISTER ORFOR30)#AP TURE2EGISTER 4HEOTHERTWODATACAPTUREREGISTERSDATACAPTURE SERIALOUT AUTOMATICALLYTRANSFERTHEIRDATATOTHEDATACAPTURE SERIALOUT$#3/54 PIN$#3/54#APTURE2EGISTERISPRES ENTINTHELEFTDATASLOTASDElNEDBYTHESERIALINPUTFORMAT AND $#3/54#APTURE2EGISTERISPRESENTINTHERIGHTDATASLOT4HE FORMATFORWRITINGTOTHE30)DATACAPTURESETUPREGISTERSISGIVEN INTHE30)SECTIONOFTHISDATASHEET D",%6%,-%4%23 ,2#,+ %84$!#S $ATACAPTUREDUSINGTHE-$)SETTINGISINFORMAT!D" DIGITALINPUTWILLPRODUCEAnD"DIGITALOUTPUTASSUMINGTHE !$ISSETFORNOPROCESSING "#,+ $ATACAPTUREDUSINGTHE-#)SETTINGISINFORMAT4HISDATA ISGENERALLYASIGNALGAINORlLTERCOEFlCIENTANDTHEREFOREITDOES NOTMAKESENSETOTALKABOUTTHEINPUT TO OUTPUTGAIN!COEFl CIENTOFCORRESPONDSTOAGAINOF $#3/54 4HEDATATHATMUSTBEWRITTENTOSETUPTHEDATACAPTUREISA CONCATENATIONOFTHE BITPROGRAMCOUNTINDEXWITHTHE BIT REGISTERSELECTlELD2EFERTO4ABLE88TOlNDTHECAPTURECOUNT ANDREGISTERSELECTNUMBERSTHATCORRESPONDTOTHEDESIREDPOINT TOBEMONITOREDINTHEDEFAULTSIGNALPROCESSINGmOW -)#2/ #/.42/,,%2  #(!..%, /54054 !$ &IGURE4YPICAL!PPLICATIONOF$ATA#APTURE&EATURE REV. B nn !$ 4ABLE88$ATA#APTURE4RAP)NDEXESAND2EGISTER3ELECTˆ$EFAULT0ROGRAM 0ROGRAM#OUNT 2EGISTER 3IGNAL$ESCRIPTION )NDEX"ITS 3ELECT"ITS (0&/UT,EFT -ULT?/UT (0&/UT2IGHT -ULT?/UT $E EMPHASIS/UT,EFT -ULT?/UT $E EMPHASIS/UT2IGHT -ULT?/UT ,EFT"IQUAD/UTPUT -ULT?/UT ,EFT"IQUAD/UTPUT -ULT?/UT ,EFT"IQUAD/UTPUT -ULT?/UT ,EFT"IQUAD/UTPUT -ULT?/UT ,EFT"IQUAD/UTPUT  -ULT?/UT ,EFT"IQUAD/UTPUT -ULT?/UT ,EFT"IQUAD/UTPUT -ULT?/UT 2IGHT"IQUAD/UTPUT -ULT?/UT 2IGHT"IQUAD/UTPUT -ULT?/UT 2IGHT"IQUAD/UTPUT -ULT?/UT 2IGHT"IQUAD/UTPUT -ULT?/UT 2IGHT"IQUAD/UTPUT -ULT?/UT 2IGHT"IQUAD/UTPUT -ULT?/UT 2IGHT"IQUAD/UTPUT  -ULT?/UT 6OLUME/UT,EFT -ULT?/UT 6OLUME/UT2IGHT -ULT?/UT 6OLUME/UT3UB -ULT?/UT 0HAT3TEREO/UT,EFT -ULT?/UT 0HAT3TEREO/UT2IGHT -ULT?/UT $ELAY/UTPUT,EFT -ULT?/UT $ELAY/UTPUT2IGHT -ULT?/UT -AIN#OMPRESSORRMS/UTD" $"?/UT -AIN#OMPRESSOR'AIN2EDUCTION -#) ,INEAR ,OOK !HEAD$ELAY/UTPUT,EFT -$) ,OOK !HEAD$ELAY/UTPUT2IGHT -$) -AIN#OMPRESSOR/UT,EFT -ULT?/UT -AIN#OMPRESSOR/UT2IGHT -ULT?/UT )NTERPOLATOR)NPUT,EFT -ULT?/UT )NCLUDES3UB2EINJECT )NTERPOLATOR)NPUT2IGHT  -ULT?/UT )NCLUDES3UB2EINJECT 3UBCHANNEL&ILTER)NPUT -ULT?/UT 3UB8OVER"IQUAD/UTPUT -ULT?/UT 3UB8OVER"IQUAD/UTPUT -ULT?/UT 3UB8OVER"IQUAD/UTPUT -ULT?/UT Left Xover Biquad 0 Output Left Xover Biquad 1 Output Right Xover Biquad 0 Output Right Xover Biquad 1 Output Sub Delay Output Sub rms Biquad Output Sub rms Output (dB) 99 108 349 358 511 467 489 Mult_Out Mult_Out Mult_Out Mult_Out Mult_Out Mult_Out DB_Out Sub Compressor Gain (Linear) Subchannel Output 495 511 MCI Mult_Out nn .UMERIC&ORMAT #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED  "IT0OSITIVE"INARY"IT #ORRESPONDSTOAD"#HANGE ,3"S ,3"S4RUNCATED ,3"S4RUNCATED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED #LIPPED 1.23, Clipped 1.23, Clipped 1.23, Clipped 1.23, Clipped 1.23, Clipped 1.23, Clipped 24-Bit Positive Binary, Bit 19 Corresponds to a 3 dB Change 2.22, 2 LSBs = 0 1.23, Clipped REV. 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B AD1954 OUTLINE DIMENSIONS 1.03 0.88 0.73 13.45 13.20 SQ 12.95 2.45 MAX 34 44 1.60 REF 1 33 PIN 1 SEATING PLANE 10.20 10.00 SQ 9.80 TOP VIEW (PINS DOWN) 2.20 2.00 1.80 0.23 0.11 23 11 0.25 0.10 0.10 COPLANARITY 7° 0° 22 12 VIEW A VIEW A 0.80 BSC LEAD PITCH 0.45 0.29 LEAD WIDTH 041807-A ROTATED 90° CCW COMPLIANT TO JEDEC STANDARDS MS-022-AB-1 Figure 25. 44-Lead Metric Quad Flat Package [MQFP] (S-44-1) Dimensions shown in millimeters 0.75 0.60 0.45 9.20 9.00 SQ 8.80 1.60 MAX 37 48 36 1 PIN 1 SEATING PLANE 0.20 0.09 7° 3.5° 0° 0.08 COPLANARITY (PINS DOWN) 25 12 13 VIEW A 0.50 BSC LEAD PITCH VIEW A 24 0.27 0.22 0.17 ROTATED 90° CCW COMPLIANT TO JEDEC STANDARDS MS-026-BBC 051706-A 0.15 0.05 7.20 7.00 SQ 6.80 TOP VIEW 1.45 1.40 1.35 Figure 26. 48-Lead Low Profile Quad Flat Package [LQFP] (ST-48) Dimensions shown in millimeters ORDERING GUIDE Model1 AD1954YSZ AD1954YSTZ AD1954YSTZRL 1 Temperature Range –40°C to +105°C –40°C to +105°C –40°C to +105°C Package Description 44-Lead MQFP 48-Lead LQFP 48-Lead LQFP, 13" Tape and Reel Z = RoHS Compliant Part. Rev. B | Page 33 Package Option S-44-1 ST-48 ST-48 AD1954 REVISION HISTORY 12/14—Rev. A to Rev. B Changes to Signal Processing Overview Section ....................... 12 Changes to Graphical Custom Programming Tools Section .... 31 Updated Outline Dimensions ....................................................... 33 Changes to Ordering Guide .......................................................... 33 8/03—Rev. 0 to Rev. A Changes to Specifications ................................................................ 3 Changes to Absolute Maximum Ratings ....................................... 6 Changes to Ordering Guide ............................................................ 6 Change to TPCs 1 and 2 .................................................................. 8 Change to Main Compressor/Limiter Section ........................... 15 Change to Interpolation Filters Section....................................... 18 Replaced Control Register 1 Section ............................................ 20 Changes to Control Register 2 Section ........................................ 21 Changes to Parameter RAM Contents Section .......................... 22 Change to Table VI ......................................................................... 23 Change to Table IX ......................................................................... 24 Change to Table XI ......................................................................... 25 Change to Data Capture Registers Section ................................. 26 Change to Table XX........................................................................ 28 Change to Analog Output Section ............................................... 30 Reversed Figures 22 and 23 ........................................................... 30 Added Figure 24.............................................................................. 30 Updated Outline Dimensions ....................................................... 33 ©2014 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02760-0-12/14(B) Rev. B | Page 34