Datenblatt-Suchmaschine für elektronische Bauteile |
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AD1987 Datenblatt(PDF) 3 Page - Analog Devices |
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AD1987 Datenblatt(HTML) 3 Page - Analog Devices |
3 / 18 page AD1987 Rev. 0 | Page 3 of 18 | May 2007 GENERAL DESCRIPTION The AD1987 audio codec and SoundMAX® software provides superior HD audio quality that exceeds Vista Premium perfor- mance. The AD1987 has eight DACs and four ADCs, three stereo headphone ports, C/LFE swapping, digital and analog PCBeep, and S/PDIF output, making the AD1987 the right choice for desktop PCs where performance is the primary consideration. The jack retasking feature on this product supports various con- figurations including platforms for 7.1 on 5 jacks, 5.1 on 3 jacks, and front panel jack retasking. The AD1987 is available in a 48-lead Pb-free frame chip scale package in both reels and trays. See Ordering Guide on Page 17. ADDITIONAL INFORMATION This data sheet provides a general overview of the AD1987 SoundMAX codec’s architecture and functionality. Additional information on the AD1987 is available in the AD1987 Pro- grammers Reference Manual. Please contact your local ADI sales representative for more information. For information on SoundMAX codecs and software see Analog Devices website at http://www.analog.com/soundMAX. JACK CONFIGURATION The guidelines shown in Table 1 through Table 3 should be used when selecting ports for particular functions. The symbols used in this table are defined as: LI = Line Level Input, LO = Line Level Output, HP = Output capable of driving headphone load, MIC = Input supports microphones with MIC bias and boost amplifier. Table 1. Desktop Applications with Discreet Jacks (Default Configuration) Port HP MIC LO LI Port A – Front Panel Headphone x x x x Port B – Front Panel Microphone x x x x Port C – Rear Panel Line-In x x x Port D – Rear Panel Front/Headphone x x x Port E – Rear Panel Microphone x x x Port F – Rear Panel Surround-Rear (5.1) x Port G – Rear Panel C/LFE x Port H – Rear Panel Surround- Center/Side (7.1) x Table 2. Retasking to Support 7.1 Audio on 5 Jacks Port HP MIC LO LI Port A – Front Panel Headphone x x x x Port B – Front Panel Microphone x x x x Port C – Rear Panel Line-In/Surround- Center/Side (7.1) xx x Port D – Rear Panel Front/Headphone x x x Port E – Rear Panel Microphone x x x Port F – Rear Panel Surround-Rear (5.1) x Port G – Rear Panel C/LFE x Table 3. Desktop Applications with Retasking to Support 5.1 Audio on 3 Jacks Port HP MIC LO LI Port A – Front Panel Headphone x x x x Port B – Front Panel Microphone x x x x Port C – Rear Panel Line-In/Surround- Rear (5.1) xx x Port D – Rear Panel Front/Headphone x x x Port E – Rear Panel Microphone /C/LFE xx x |
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