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AD1845JP 数据表(PDF) 8 Page - Analog Devices |
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AD1845JP 数据表(HTML) 8 Page - Analog Devices |
8 / 40 page AD1845 –8– REV. C Analog Signals Pin Name PLCC TQFP I/O Description L_LINE 30 31 I Left Line Input. R_LINE 27 28 I Right Line Input. L_MIC 29 30 I Left Microphone Input. This signal can be either line level or –20 dB from line level (using the on-chip 20 dB gain block). R_MIC 28 29 I Right Microphone Input. This signal can be either line level or –20 dB from line level (using the on-chip 20 dB gain block). L_AUX1 39 45 I Left Auxiliary #1 Line Input. R_AUX1 42 48 I Right Auxiliary #1 Line Input. L_AUX2 38 44 I Left Auxiliary #2 Line Input. R_AUX2 43 49 I Right Auxiliary #2 Line Input. L_OUT 40 46 O Left Line Output. R_OUT 41 47 O Right Line Output. M_IN 46 56 I Mono Input. M_OUT 47 57 O Mono Output. Miscellaneous Pin Name PLCC TQFP I/O Description XTAL1I 17 12 I 24.576 MHz Crystal #1 Input. XTAL1O 18 13 O 24.576 MHz Crystal #1 Output. XTAL2I 21 16 Not used on the AD1845. XTAL2O 22 17 Not used on the AD1845. PWRDWN 23 18 I Power Down Signal. Active LO places the AD1845 in its lowest power consumption mode. All sections of the AD1845, including the digital interface, are shut down and consume minimal power. INT 57 72 O Host Interrupt Pin. A host interrupt is generated to notify the host that a specified event has occurred. XCTL1:0 58 & 56 73 & 71 O External Control. These signals reflect the current status of register bits inside the AD1845. They can be used for signaling or to control external logic. RESET 24 19 I Reset. Active LO resets all digital registers and filters, and resets all analog filters. Active LO places the AD1845 in the lowest power consumption mode. XTAL1 is required to be running during the minimum low pulsewidth of the reset signal. VREF 32 35 O Voltage Reference. Nominal 2.25 volt reference available for dc-coupling and level- shifting. VREF should not be used to sink or source current. VREF_F 33 38 I Voltage Reference Filter. Voltage reference filter point for external bypassing only. L_FILT 31 33 I Left Channel Filter. This pin requires a 1.0 µF capacitor to analog ground for proper operation. R_FILT 26 25 I Right Channel Filter. This pin requires a 1.0 µF capacitor to analog ground for proper operation. NC 48–52, 2–5, 21–24 No Connect. 55 26, 27, 32, 34, 36, 37, 39, 50–53, 58–66, 69, 70, 80–83, 94–97 |
类似零件编号 - AD1845JP |
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类似说明 - AD1845JP |
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