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Hi Guys,
Can I power the S/PDIF receiver from a 9V battery? How about for use in my car? Can I connect it directly to 12v in the car?
Thanks!
Roy
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The vreg on the receiver is a National Semiconductor LP2985AIM5-3.3. Looking at the datasheet (http://www.national.com/ds/LP/LP2985.pdf), the Absolute Max input voltage is 16VDC.
A 9V supply should work. In your car, typically the alternator output will be in the 14VDC region, so you will be close to the limit, and generating even more heat, but it should work in theory.
A better solution for the car would be to pre-regulate the voltage down to something closer to 6-7V before feeding the receiver.
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Joined: 8/22/2010(UTC) Posts: 38  Thanks: 14 times
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May the 5VDC PSU be used for the S/PDIF Receiver? I work on my DAC and already have 5V PSU for Arduino. I ask because the manual recommends 7.5V for the board. The LP2985AIM5-3.3 datasheet does not seem to indicate the mimimum voltage required.
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It is a "ultra low dropout regulator". Look at Vin-Vout: worse case is .575V, so it should work
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Joined: 8/22/2010(UTC) Posts: 38 Thanks: 14 times
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