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Old 2nd November 2006, 06:58 AM   #1
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Default Saa700 +ad1865

Hi,
Is it possible to connect AD1865 to SAA 7000 (non oversampling) ?
Thanks
Darius
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Old 2nd November 2006, 11:34 AM   #2
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Yes
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Old 2nd November 2006, 11:48 AM   #3
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Thanx for good news. Then question-how?
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Old 2nd November 2006, 11:54 AM   #4
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Now & connected http://tube.fw.hu/no_oversampling.pdf .Wanna compare with AD1865.
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Old 8th November 2006, 06:37 AM   #5
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Hi
could somebody tell how change SAA7000 output format to 2' complement?
Thanks
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Old 8th November 2006, 08:57 AM   #6
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See the datasheet for the SAA7020.
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Old 8th November 2006, 09:44 AM   #7
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SAA7020 pin 38 (Gap) .Disconnect from ground and connect to +5V (?) via 1k resistor. Am & right?
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Old 8th November 2006, 09:50 AM   #8
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Yes.
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Old 9th November 2006, 05:35 AM   #9
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Hi
So & connected +5V to 38 pin SAA7020 ,made 16 bit output from SA7000 . & hear weak music and loud HF noise. What else should & do?
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Old 9th November 2006, 07:57 AM   #10
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It is not quite as simple as it looks. The SAA7000 loads the dac with a 14/16 bit burst clock. The AD1865 is an 18bit device. Therefore you don't have enough clock cycles to fully load the AD1865. The simplest solution is to use the AD1856 or the PCM56 or use a digital filter. Using an 18bit or higher chip without a digital filter requires quite a bit of glue logic.
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