Voltage Regulator for 1053 Circuit

Designing hardware that uses VLSI Solution's devices as slave codecs such as an external MP3 decoder chip for a host microcontroller.
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admhrv
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Posts: 11
Joined: Thu 2011-02-17 22:34

Voltage Regulator for 1053 Circuit

Post by admhrv » Wed 2011-03-02 19:17

Does anyone know a part number for the two voltage regulators used with a 1053 circuit? I'm building a clone of a part I tested from SparkFun
http://www.sparkfun.com/products/8954
But am unsure of which voltage regulators are needed.
Thanks.

russdx
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Joined: Mon 2011-02-07 15:21

Re: Voltage Regulator for 1053 Circuit

Post by russdx » Tue 2011-03-08 19:56

id also be very interested in these part numbers :)

sami
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Re: Voltage Regulator for 1053 Circuit

Post by sami » Mon 2011-03-14 14:20

VS1053 requires 1.8V as Vcore and 1.8V ... 3.6V for IO and 2.5V ... 3.6V for Analog.

The IO voltage depends on the external circuitry used, if there are no compatibility issues
with other components in the system, it should be kept low to reduce power consumption.
We have used usually 2.7V or 3.0V.

For optimum analog performance the analog voltage should be close to 3.6V.
If power consumption is more critical it should be lower. We have usually used 3.3V or 3.0V.

It is recommended to use separate regulators for Analog and IO to minimise crosstalk and
powerline coupled interference. If optimal analog performance is not required same
regulator may be used for both Analog an IO. 2.7V is a good compromise for that.

If SD card is to be used in the system it should be noticed that these cards can draw large amount of
current, about 200mA. If the same regulator is used for IO and SD card, it should be capable
of driving this current. We have used TS9007PCX5 , a 3.0V 300mA regulator, when using SD card.

When the current and voltage specifications are correct, there are no special requirements for the
regulators. We have used several LDO regulator types. For example: TPS76318 for 1.8V and TPS76327 for 2.7V and SP6200EM5-1-8 and SP6200EM5-2-7. If you want to use 3.3V regulators, the appropriate types would be TPS76333 and SP6200EM5-3-3.
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Sami

hypeboy
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Re: Voltage Regulator for 1053 Circuit

Post by hypeboy » Fri 2011-07-22 9:09

wow thank you sami that was a big help. I also needed a standard voltage regulator for 1053 circuit. thankgoodness we have this thread..

hypeboy
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Re: Voltage Regulator for 1053 Circuit

Post by hypeboy » Tue 2011-07-26 3:22

thanks guys! NOW IT'S WORKING OMG

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