Eagle dac ssi Example
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=Digital to Analog Converter (dac_ssi)= | =Digital to Analog Converter (dac_ssi)= | ||
| - | ==Compatibility [http://www.micromint.com/index.php/SBC/eagle-50.html | + | ==Compatibility [http://www.micromint.com/index.php/SBC/eagle-50.html Eagle 50], [http://www.micromint.com/index.php/SBC/eagle-50.html 50E], [http://www.micromint.com/index.php/SBC/eagle-100.html 100] with IO plus== |
The I/O Plus option of the Eagle controller line includes four 10-bit DACs via the SSI serial synchronous interface with a maximum sample rate of 500 kilo-samples/sec (kSPS). These signals are available in the following headers: | The I/O Plus option of the Eagle controller line includes four 10-bit DACs via the SSI serial synchronous interface with a maximum sample rate of 500 kilo-samples/sec (kSPS). These signals are available in the following headers: | ||
[[Image:Eagle_DAC.gif|center|]] | [[Image:Eagle_DAC.gif|center|]] | ||
| - | This example shows how to use the DAC to generate triangle and square waves. The signal output is shown below. In integer format the 10-bit outputs go between 0 and 1023 (0x03FF) for the range 0.00V to 3. | + | This example shows how to use the DAC to generate triangle and square waves. The signal output is shown below. In integer format the 10-bit outputs go between 0 and 1023 (0x03FF) for the range 0.00V to 3.30V in steps of 3.22 mV. Op-amps or other alternatives should be used to implement scaling and isolation. |
[[Image:Eagle_dac_ssi.gif|center|]] | [[Image:Eagle_dac_ssi.gif|center|]] | ||
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| + | [[Image:Eagle_dac_ssi_scope.png|center|]] | ||
Current revision as of 14:43, 11 March 2011
Digital to Analog Converter (dac_ssi)
Compatibility Eagle 50, 50E, 100 with IO plus
The I/O Plus option of the Eagle controller line includes four 10-bit DACs via the SSI serial synchronous interface with a maximum sample rate of 500 kilo-samples/sec (kSPS). These signals are available in the following headers:
This example shows how to use the DAC to generate triangle and square waves. The signal output is shown below. In integer format the 10-bit outputs go between 0 and 1023 (0x03FF) for the range 0.00V to 3.30V in steps of 3.22 mV. Op-amps or other alternatives should be used to implement scaling and isolation.
