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AD1847JST Datasheet(PDF) 28 Page - Analog Devices |
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AD1847JST Datasheet(HTML) 28 Page - Analog Devices |
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28 / 28 page  AD1847 REV. B –28– OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 44-Lead PLCC (P-44A) 0.032 (0.81) 0.026 (0.66) 0.021 (0.53) 0.013 (0.33) 0.056 (1.42) 0.042 (1.07) 0.025 (0.63) 0.015 (0.38) 0.180 (4.57) 0.165 (4.19) 0.63 (16.00) 0.59 (14.99) 0.110 (2.79) 0.085 (2.16) 0.040 (1.01) 0.025 (0.64) 0.050 (1.27) BSC 0.656 (16.66) 0.650 (16.51) SQ 0.695 (17.65) 0.685 (17.40) SQ 0.048 (1.21) 0.042 (1.07) 0.048 (1.21) 0.042 (1.07) 40 6 TOP VIEW 39 29 18 17 PIN 1 IDENTIFIER 7 28 0.020 (0.50) R 44-Terminal Plastic Thin Quad Flatpack (TQFP) (ST-44) TOP VIEW (PINS DOWN) 1 33 34 44 11 12 23 22 0.018 (0.45) 0.012 (0.30) 0.031 (0.80) BSC 0.394 (10.0) SQ 0.472 (12.00) SQ 0.057 (1.45) 0.053 (1.35) 0.006 (0.15) 0.002 (0.05) SEATING PLANE 0.063 (1.60) MAX 0.030 (0.75) 0.018 (0.45) INDEX PAGE PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . 1 AD1847 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . 2 ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 PINOUTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 PIN DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 AUDIO FUNCTIONAL DESCRIPTION . . . . . . . . . . . 7 Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Analog Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Analog-to-Digital Datapath . . . . . . . . . . . . . . . . . . . . . 7 Digital-to-Analog Datapath . . . . . . . . . . . . . . . . . . . . . 7 Digital Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Digital Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Power Supplies and Voltage Reference . . . . . . . . . . . . . 8 Clocks and Sample Rates . . . . . . . . . . . . . . . . . . . . . . . 8 CONTROL REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . 9 Control Register Mapping . . . . . . . . . . . . . . . . . . . . . . 9 Control Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Left/Right Playback/Capture Data . . . . . . . . . . . . . . . 10 Status Word . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : 11 Index Readback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Indirect Mapped Registers . . . . . . . . . . . . . . . . . . . . . 12 Left Input Control Register . . . . . . . . . . . . . . . . . . . . 13 Right Input Control Register . . . . . . . . . . . . . . . . . . . 13 Left Auxiliary #1 Input Control Register . . . . . . . . . . 13 Right Auxiliary #1 Input Control Register . . . . . . . . . 13 Left Auxiliary #2 Input Control Register . . . . . . . . . . 14 Right Auxiliary #2 Input Control Register . . . . . . . . . 14 Left DAC Control Register . . . . . . . . . . . . . . . . . . . . . 14 Right DAC Control Register . . . . . . . . . . . . . . . . . . . . 14 Data Format Register . . . . . . . . . . . . . . . . . . . . . . . . . 15 Interface Configuration Register . . . . . . . . . . . . . . . . . 16 Pin Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Invalid Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Miscellaneous Information Register . . . . . . . . . . . . . . 17 Digital Mix Control Register . . . . . . . . . . . . . . . . . . . 17 Invalid Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Serial Data Interface . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Control Register Mapping Summary . . . . . . . . . . . . . 20 Daisy-Chained Multiple Codecs . . . . . . . . . . . . . . . . . 20 INITIALIZATION AND PROCEDURES . . . . . . . . . . 21 Reset and Power Down . . . . . . . . . . . . . . . . . . . . . . . 21 Clock Connections and Clock Rates . . . . . . . . . . . . . . 21 Mode Change Enable State . . . . . . . . . . . . . . . . . . . . 22 Digital Mix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Autocalibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Changing Sample Rates . . . . . . . . . . . . . . . . . . . . . . . 22 DATA FORMAT DEFINITIONS . . . . . . . . . . . . . . . . 23 16-Bit Signed Format . . . . . . . . . . . . . . . . . . . . . . . . . 23 8-Bit Unsigned Format . . . . . . . . . . . . . . . . . . . . . . . . 23 8-Bit Companded Formats . . . . . . . . . . . . . . . . . . . . . 23 APPLICATIONS CIRCUITS . . . . . . . . . . . . . . . . . . . . 23 FREQUENCY RESPONSE PLOTS . . . . . . . . . . . . . . . 26 TIMING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . 27 OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . 28 All brand or product names mentioned are trademarks or regis- tered trademarks of their respective holders. |
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