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PICList Thread
'I2C AD'
1997\11\23@010726 by Peter Pohlmann

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Hello there,

I am looking for an AD Converter with I2C output.
Does someone know such a device ??

Thanks,
Peter

1997\11\23@012425 by Gavin Jackson

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part 0 628 bytes
I have a Maxim data CD and I just had a very quick
look. I'm not sure what resolution or how many
channels you wanted, but here are some anyway:
8 bit res:
Max 1112 - 8 channels
Max 1113 - 4 channels

10 bit res:
Max 192 - 8 channels

12 bit res:
Max 188 - 8 channels

Hope this helps.

Gavin

spam_OUTvulcanTakeThisOuTspamihug.co.nz
- - - - - - - - - - - - - -


-----Original Message-----
From:   Peter Pohlmann [SMTP:.....peterKILLspamspam@spam@E-PARTNER.COM]
Sent:   Sunday, 23 November 1997 19:19
To:     PICLISTspamKILLspamMITVMA.MIT.EDU
Subject:        I2C AD

Hello there,

I am looking for an AD Converter with I2C output.
Does someone know such a device ??

Thanks,
Peter

1997\11\23@053640 by wwl

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On Sun, 23 Nov 1997 01:19:06 -0500, you wrote:

>Hello there,
>
>I am looking for an AD Converter with I2C output.
>Does someone know such a device ??
>
>Thanks,
>Peter
Philips PCF8591
    ____                                                           ____
  _/ L_/  Mike Harrison / White Wing Logic / .....wwlKILLspamspam.....netcomuk.co.uk  _/ L_/
_/ W_/  Hardware & Software design / PCB Design / Consultancy  _/ W_/
/_W_/  Industrial / Computer Peripherals / Hazardous Area      /_W_/

1997\11\23@080507 by johnb

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Peter wrote:
> I am looking for an AD Converter with I2C output.
> Does someone know such a device ??

It's always worth looking at the Philips I2C Peripherals Handbook first.

They offer:
PCF 8591 4-ch 8-bit A/D + D/A O/P
Other handy things:
PCF 8583 Clock-Calendar with 256 bytes of Static RAM (with battery
backup).
        (this chip can be programmed to give a wake-up interrupt
pulse).
Universal LCD driver (digits)
LCD row and coloumn drivers (matrix)
4-digit LED driver
8-bit I/O expander
etc etc.

And of course all these can be strung together on the I2C bus, just
using 2 pins.

John Blackburn,
South London UK.

1997\11\23@115856 by Alessandro Zummo

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Il 23-Nov-97, Mike Harrison scrisse:


>>
>>I am looking for an AD Converter with I2C output.
>>Does someone know such a device ??
>>
>>Thanks,
>>Peter
>Philips PCF8591

Really a fine chip..

4 single ended or differential analog-to-digital converter with
track-and-hold feature and one digital-to-analog converter
plus some other features....all in one!

...anyway it's not so cheap...

--

  - *Alex* -

     (EraseMEazummospam_OUTspamTakeThisOuTita.flashnet.it)

1997\11\24@064612 by Simon Melhuish

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On Sun, 23 Nov 1997, Gavin Jackson wrote:

> Hi there Peter
>
> I have a Maxim data CD and I just had a very quick
> look. I'm not sure what resolution or how many
> channels you wanted, but here are some anyway:
> 8 bit res:
> Max 1112 - 8 channels
> Max 1113 - 4 channels
>
> 10 bit res:
> Max 192 - 8 channels
>
> 12 bit res:
> Max 188 - 8 channels
>

I thought most of those used a 4-wire serial bus rather than I2C. So far
the only way I've found to get >8 bit ADC on I2C is to program a PIC14000
as an I2C slave device. Works a treat! (wouldn't manage to do conversions
very fast though)

Simon Melhuish

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

Dr. Simon J. Melhuish
N.R.A.L., Jodrell Bank.
http://www.jb.man.ac.uk/~sjm/

1997\11\25@074508 by Thomas Vegeby

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>I am looking for an AD Converter with I2C output.
>Does someone know such a device ??

There are few ADCs with I2C interace, but National makes a 12-bit.  Look for

LM12438:
12-Bit Plus Sign Data Acquisition System with Serial I/O and Self-Calibration

at http://www.national.com/catalog/Analog_A.html .

It's very capable but not cheap, USD 35 1-25.

Thomas Vegeby

1997\11\25@101009 by John Shreffler

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part 0 554 bytes
-----Original Message-----
From:   Thomas Vegeby [SMTP:tvegebyspamspam_OUTREMOTECOM.SE]
Sent:   Tuesday, November 25, 1997 7:45 AM
To:     @spam@PICLISTKILLspamspamMITVMA.MIT.EDU
Subject:        Re: I2C AD

>I am looking for an AD Converter with I2C output.
>Does someone know such a device ??

There are few ADCs with I2C interace, but National makes a 12-bit.  Look for

LM12438:
12-Bit Plus Sign Data Acquisition System with Serial I/O and Self-Calibration

at http://www.national.com/catalog/Analog_A.html .

It's very capable but not cheap, USD 35 1-25.

Thomas Vegeby

1997\11\25@101016 by John Shreffler

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part 0 554 bytes
-----Original Message-----
From:   Thomas Vegeby [SMTP:KILLspamtvegebyKILLspamspamREMOTECOM.SE]
Sent:   Tuesday, November 25, 1997 7:45 AM
To:     RemoveMEPICLISTTakeThisOuTspamMITVMA.MIT.EDU
Subject:        Re: I2C AD

>I am looking for an AD Converter with I2C output.
>Does someone know such a device ??

There are few ADCs with I2C interace, but National makes a 12-bit.  Look for

LM12438:
12-Bit Plus Sign Data Acquisition System with Serial I/O and Self-Calibration

at http://www.national.com/catalog/Analog_A.html .

It's very capable but not cheap, USD 35 1-25.

Thomas Vegeby

1997\11\25@155500 by Andrew Mayo

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Wouldn't it be a lot cheaper to take a standard AD plus an extra PIC and
turn the two of them into an I2C peripheral using Mchips standard I2C
code?.

> ----------
> From:         spamBeGonejohnsspamBeGonespamavenuetech.com[SMTP:TakeThisOuTjohnsEraseMEspamspam_OUTavenuetech.com] on
> behalf of John Shreffler[SMTP:RemoveMEjohnsspamTakeThisOuTAVENUETECH.COM]
> Reply To:     pic microcontroller discussion list
> Sent:         Wednesday, November 26, 1997 3:57 AM
> To:   'pic microcontroller discussion list'
> Subject:      RE: I2C AD
>
>
>
>       {Original Message removed}

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