ADC3564: NCO frequency change time

Kazuhiko Hirano

Part Number: ADC3564

Hello,

After NCO frequency is written in the register via SPI, how much time does it take for the NCO to change its frequency to the written frequency from the previous frequency?

Best regards,

K.Hirano

11 months ago

0 Drew Harrell 11 months ago

TI__Intellectual 2280 points

Hi Kazuhiko-san,

It should not take long at all, and should go into effect immediately following the toggling of bits 1 and 5 in register 0x26.

Thus, with complex decimation, you could write 0xAA to set the gain and set bits 1 and 5 and then write 0x88 to complete the toggle of bits 1 and 5.

Best regards,

Drew

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ADC3564: NCO frequency change time