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AD1986JSTZ-REEL Folha de dados(PDF) 3 Page - Analog Devices |
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AD1986JSTZ-REEL Folha de dados(HTML) 3 Page - Analog Devices |
3 / 52 page AD1986 Rev. 0 | Page 3 of 52 NOTES REDUCED SUPPORT COMPONENTS The AD1986’s many improvements reduce external support components for particular applications. • Multiple Microphone Sourcing: The MIC_1/2, LINE_IN and C/LFE pins may all be selected as sources for microphone input (boost amplifier). • Multiple VREF_OUT Pins: Each microphone-capable pin group (MIC_1/2, LINE_IN and C/LFE) has separate, software controllable VREF_OUT pins, reducing the need for external biasing components. • Internal Microphone Mixing: Any combination of the MIC_1/2, LINE_IN and C/LFE pins may be summed to produce the microphone input. This removes the need for external mixing components in those applications that externally mixed microphone sources. • Advanced Jack Presence Detection: Using two CODEC pins, eight resistors and isolated switch jacks, the AD1986 can detect jack insertion on eight separate jacks. Previous CODECs would have required 8 CODEC pins and 16 resistors. • Internal Microphone/Line In/C/LFE Sharing: On systems that share the microphone with the C/LFE jack there are no external components required. The micro-phone selector can select the LINE_IN pins in those cases where the microphone and line input devices are swapped. • Internal Line In/Microphone/Surround Sharing: On systems that share the line in with the surround jack there are no external components required. • Dual Headphone Amplifiers: The AD1986 can drive headphones out of the HP_OUT or LINE_OUT pins. |
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