Post by thread:I2C AD

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_OUTvulcanTakeThisOuTihug.co.nz - - - - - - - - - - - - - - -----Original Message----- From: Peter Pohlmann [SMTP:.....peterKILLspam@spam@E-PARTNER.COM] Sent: Sunday, 23 November 1997 19:19 To: PICLISTKILLspamMITVMA.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

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 / .....wwlKILLspam.....netcomuk.co.uk _/ L_/ _/ W_/ Hardware & Software design / PCB Design / Consultancy _/ W_/ /_W_/ Industrial / Computer Peripherals / Hazardous Area /_W_/

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.

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_OUTTakeThisOuTita.flashnet.it)

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/

>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

part 0 554 bytes -----Original Message----- From: Thomas Vegeby [SMTP:tvegebyspam_OUTREMOTECOM.SE] Sent: Tuesday, November 25, 1997 7:45 AM To: @spam@PICLISTKILLspamMITVMA.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

part 0 554 bytes -----Original Message----- From: Thomas Vegeby [SMTP:KILLspamtvegebyKILLspamREMOTECOM.SE] Sent: Tuesday, November 25, 1997 7:45 AM To: RemoveMEPICLISTTakeThisOuTMITVMA.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

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: spamBeGonejohnsspamBeGoneavenuetech.com[SMTP:TakeThisOuTjohnsEraseMEspam_OUTavenuetech.com] on > behalf of John Shreffler[SMTP:RemoveMEjohnsTakeThisOuTAVENUETECH.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}