DAC0808 Single power supply

[diegobarriga]

Hello All,

I'd appreciate your help with an issue

I found this app note that explains how to run DAC0808 with only one power supply (avoiding the use of -15VDC),

Has anyone tested this circuit before? ¿What modifications should I do to have an 0-12V output instead of 0-5V shown in the schematic? or ¿How do I calculate these modifications?

Thanks in advance for sharing your knoledge and kind support

[kiran_shrestha]

Oh really you are using that old DAC....I recommend using some new DACs

[danadak]

You an get DACs with onboard reference, and onboard output amp.

You can even get them on a UP with all the above, Cypress PSOC.

For me what stands out is -

1) Routability
2) Fast 12 bit SAR A/D and slow 20 bit DelSig
3) DFB (Digital Filter Block) that is dual channel, handle FIR or IIR filters, or DFB
can be used as a GP fast processor block, similar to RISC block
4) MSI logic elements GUI based and/or the UDB Verilog capability. Eg. the FPGA
like capability
5) Onboard Vref
6) IDAC, VDAC, OpAmps (up to 4), comparator, mixer, switch cap, analog mux....
7) LCD,  COM, UART, I2C, I2S, One Wire, SPI, Parallel, LIN, CAN, BLE, USB
9) Custom components capability, create with schematic capture or Verilog
10) DMA to offload processes like filters, COM, Display
11) ARM M0 (PSOC 4) or M3 (PSOC  5LP) or 8051 core(PSOC 3)
12) Extensive clock generation capabilities
13) All components supported by extensive prewritten APIs

https://www.element14.com/community/thread/23736/l/100-projects-in-100-days?displayFullThread=true

http://www.cypress.com/documentation/code-examples/psoc-345-code-examples

Great video library

Attached component list.  A component is an on chip HW resource.

Free GUI design tool with schematic capture, "Creator". Components have rich API library attached
to each component. Compilers free as well.

PSOC 4 is low end of family, consider 5LP parts as well. PSOC 4 also has arduino footprint boards (pioneer) as well

https://www.elektormagazine.com/labs/robot-build-with-cypress-psoc

http://www.cypress.com/products/32-bit-arm-cortex-m-psoc



Regards, Dana.

[diegobarriga]

DAC0808 is old but it is what electronics store have available in my city