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Tsl230

ArchiverArchiver Posts: 46,084
edited 2004-03-20 20:46 in General Discussion
Hello all. I was reading Nuts and Volts column #21 about the TI TSL230
light-to-frequency converter from paralax, and was wondering if I may use a 1 uf
capacitor across vdd and vss instead of the .1uf.

Thanks for your time, John Baker


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Comments

  • ArchiverArchiver Posts: 46,084
    edited 2004-03-16 03:01
    Actually, it is proably a good idea to use both. When you typically see a
    small (0.1 uf) and a larger (10 uF) across vdd to vss, the 0.1 uf is there to
    act
    as a short circuit to high frequency noise that may enter the circuit, while
    the larger cap (10uF or bigger) would supply "supplemental" current for very
    short periods of time if/when the circuit has a MOMENTARY high current demand
    that might cause a small loss in voltage to the circuit. At least that is the
    way I understand it.

    Does anybody concur?

    ken
    Hello all. I was reading Nuts and Volts column #21 about the TI TSL230
    light-to-frequency converter from paralax, and was wondering if I may use a 1 uf

    capacitor across vdd and vss instead of the .1uf.


    [noparse][[/noparse]Non-text portions of this message have been removed]
  • ArchiverArchiver Posts: 46,084
    edited 2004-03-16 03:06
    wow, fast reply. Thank you. I just read some more about noises and such. more
    input is appreciated.
    -John Baker

    smartdim@a... wrote:
    Actually, it is proably a good idea to use both. When you typically see a
    small (0.1 uf) and a larger (10 uF) across vdd to vss, the 0.1 uf is there to
    act
    as a short circuit to high frequency noise that may enter the circuit, while
    the larger cap (10uF or bigger) would supply "supplemental" current for very
    short periods of time if/when the circuit has a MOMENTARY high current demand
    that might cause a small loss in voltage to the circuit. At least that is the
    way I understand it.

    Does anybody concur?

    ken
    Hello all. I was reading Nuts and Volts column #21 about the TI TSL230
    light-to-frequency converter from paralax, and was wondering if I may use a 1 uf

    capacitor across vdd and vss instead of the .1uf.


    [noparse][[/noparse]Non-text portions of this message have been removed]



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  • ArchiverArchiver Posts: 46,084
    edited 2004-03-16 03:35
    When I get to work tomorrow, I will post a link that is pretty good about
    capacitor basic, bypassing etc. In the mean time you might want to google
    "explanation of bypass capacitors"

    ken
    wow, fast reply. Thank you. I just read some more about noises and such. more
    input is appreciated.
    -John Baker


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  • ArchiverArchiver Posts: 46,084
    edited 2004-03-16 03:47
    thanks again.

    smartdim@a... wrote:When I get to work tomorrow, I will post a link that is
    pretty good about
    capacitor basic, bypassing etc. In the mean time you might want to google
    "explanation of bypass capacitors"

    ken
    wow, fast reply. Thank you. I just read some more about noises and such. more
    input is appreciated.
    -John Baker


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  • ArchiverArchiver Posts: 46,084
    edited 2004-03-19 15:37
    http://www.interq.or.jp/japan/se-inoue/e_capa.htm
    wow, fast reply. Thank you. I just read some more about noises and such. more
    input is appreciated.
    -John Baker


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  • ArchiverArchiver Posts: 46,084
    edited 2004-03-20 20:46
    great info. thanks

    smartdim@a... wrote:http://www.interq.or.jp/japan/se-inoue/e_capa.htm
    wow, fast reply. Thank you. I just read some more about noises and such. more
    input is appreciated.
    -John Baker


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