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Discussion Groups | AVRclub | [AVR club] 4X DAC Design for Multiflex using Atmega16 and AD7528 DAC chip
Atmel AVR Microcontroller discussion group.
[AVR club] 4X DAC Design for Multiflex using Atmega16 and AD7528 DAC chip - huiyangdoh - Dec 8 11:47:59 2007
I am trying to develop DAC circuitry for Atmega 16 since Atmega16
doesn't have in-built feature of DAC. The circuitry design will be 4X
DAC design using AD7528 DAC Chips To my understanding, PortC0-1
(SDA/SCL) of Atmega 16 will be used to drive the DAC circuit which will
output variable voltage 0DVc - 10DVc at fix current 25mA using Op Amp.
I am not trying to ask anyone to do homework for me but I may treat
here as a resource to gain ideas for the development I am working on.
I will appreaciate anyone helping me by having discussions and making
suggestions related to this topic.
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )
doesn't have in-built feature of DAC. The circuitry design will be 4X
DAC design using AD7528 DAC Chips To my understanding, PortC0-1
(SDA/SCL) of Atmega 16 will be used to drive the DAC circuit which will
output variable voltage 0DVc - 10DVc at fix current 25mA using Op Amp.
I am not trying to ask anyone to do homework for me but I may treat
here as a resource to gain ideas for the development I am working on.
I will appreaciate anyone helping me by having discussions and making
suggestions related to this topic.
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )
[AVR club] Re: 4X DAC Design for Multiflex using Atmega16 and AD7528 DAC chip - bert_hoogenboom - Dec 14 19:15:42 2007
--- In a...@yahoogroups.com, "huiyangdoh" wrote:
>
> I am trying to develop DAC circuitry for Atmega 16 since Atmega16
> doesn't have in-built feature of DAC. The circuitry design will be
4X
> DAC design using AD7528 DAC Chips To my understanding, PortC0-1
> (SDA/SCL) of Atmega 16 will be used to drive the DAC circuit which
will
> output variable voltage 0DVc - 10DVc at fix current 25mA using Op
Amp.
> I am not trying to ask anyone to do homework for me but I may treat
> here as a resource to gain ideas for the development I am working on.
> I will appreaciate anyone helping me by having discussions and making
> suggestions related to this topic.
>
If you want to use the AD7528, you can not connect it directly on the
TWI interface sinds it is a DAC with a paralel interface if you want to
use it on the TWI you will need to connect it via 2x PCF8574 or
something simular.
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )
>
> I am trying to develop DAC circuitry for Atmega 16 since Atmega16
> doesn't have in-built feature of DAC. The circuitry design will be
4X
> DAC design using AD7528 DAC Chips To my understanding, PortC0-1
> (SDA/SCL) of Atmega 16 will be used to drive the DAC circuit which
will
> output variable voltage 0DVc - 10DVc at fix current 25mA using Op
Amp.
> I am not trying to ask anyone to do homework for me but I may treat
> here as a resource to gain ideas for the development I am working on.
> I will appreaciate anyone helping me by having discussions and making
> suggestions related to this topic.
>
If you want to use the AD7528, you can not connect it directly on the
TWI interface sinds it is a DAC with a paralel interface if you want to
use it on the TWI you will need to connect it via 2x PCF8574 or
something simular.
(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )