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AD1846 Datasheet(PDF) 27 Page - Analog Devices |
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AD1846 Datasheet(HTML) 27 Page - Analog Devices |
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27 / 28 page ![]() AD1846 REV. A –27– OUTLINE DIMENSIONS Dimensions shown in inches and (mm). P-68A 68-Lead Plastic Leaded Chip Carrier 0.029 (0.74) 0.027 (0.69) 0.019 (0.48) 0.017 (0.43) 0.175 (4.45) 0.169 (4.29) 0.925 (23.50) 0.895 (22.73) 0.104 (2.64) TYP 0.050 (1.27) TYP 0.954 (24.23) 0.950 (24.13) SQ 0.995 (25.27) 0.885 (22.48) SQ 44 43 26 10 9 60 61 27 TOP VIEW PIN 1 IDENTIFIER INDEX PAGE PRODUCT OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 ELECTRICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . 2 ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 PINOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 PIN DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 AUDIO FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . 9 Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Analog Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Analog-to-Digital Datapath . . . . . . . . . . . . . . . . . . . . . . . . 9 Digital-to-Analog Datapath . . . . . . . . . . . . . . . . . . . . . . . . 9 Digital Mixing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Analog Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Digital Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Power Supplies and Voltage Reference . . . . . . . . . . . . . . . 10 Clocks and Sample Rates . . . . . . . . . . . . . . . . . . . . . . . . . 10 CONTROL REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Control Register Architecture . . . . . . . . . . . . . . . . . . . . . . 11 Direct Control Register Definitions . . . . . . . . . . . . . . . . . 12 Indirect Control Register Definitions . . . . . . . . . . . . . . . . 14 DATA AND CONTROL TRANSFERS . . . . . . . . . . . . . . . 21 Data Ordering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Control and Programmed I/O (PIO) Transfers . . . . . . . . 21 Direct Memory Access (DMA) Transfers . . . . . . . . . . . . . 22 Single-Channel DMA . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 DMA Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 DMA Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 POWER UP AND RESET . . . . . . . . . . . . . . . . . . . . . . . . . 24 AUTOCALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 CHANGING SAMPLE RATES . . . . . . . . . . . . . . . . . . . . . 24 APPLICATIONS CIRCUITS . . . . . . . . . . . . . . . . . . . . . . . 25 PACKAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 |
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