Hardware/Mezzanine/audio AD-DA
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A [http://www.ti.com/product/tps54227 TPS54227] DC/DC converter generates 6.5 V from the power supply | A [http://www.ti.com/product/tps54227 TPS54227] DC/DC converter generates 6.5 V from the power supply | ||
and is followed by a 5 V regulator. | and is followed by a 5 V regulator. | ||
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| + | Hence, the minimal power supply range is about ±7 V. | ||
== Input range == | == Input range == | ||
Revision as of 13:02, 5 November 2012
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Audio AD/DA mezzanine board
This board has been developed as a low-cost replacement of the high-speed AD-DA board. It features:
- two 24-bit, 192 kHz, stereo WM8782 ADCs
- two 24-bit, 192 kHz, stereo WM8759 DACs
Power supply
The supply from the connector is used to power the TL064 op amps. They can be powered between ±3.5 V and ±18V.
A TPS54227 DC/DC converter generates 6.5 V from the power supply and is followed by a 5 V regulator.
Hence, the minimal power supply range is about ±7 V.
Input range
The board input signals are brougth to differential op-amp circuits with
- R15 = R17 = R16 = R18 = R36 = R38 = R37 = R39
- R15 = R17 = R16 = R18 = R36 = R38 = R37 = R39
