AD1937 - does it support 8kHz

Hi Songhee,

It is possible to run the AD1937 at 8 kHz; the PLL will not run that slowly and so the PLL must be turned off and the part run in Direct Clocking mode. See the datasheet for more details.

The register settings are as follows:

PLLCC0: 0x84 (Enable ADC and DAC, Input 512 x Fs)

PLLCC1: 0x03 (Clock sources = MCLK: this is Direct Clock mode)

The system will need to provide an MCLK that is 512 x Fs = 4.096 MHz. If you need to change the sample rate, you will need to provide a different MCLK frequency.

Hi Songhee,

It is possible to run the AD1937 at 8 kHz; the PLL will not run that slowly and so the PLL must be turned off and the part run in Direct Clocking mode. See the datasheet for more details.

The register settings are as follows:

PLLCC0: 0x84 (Enable ADC and DAC, Input 512 x Fs)

PLLCC1: 0x03 (Clock sources = MCLK: this is Direct Clock mode)

The system will need to provide an MCLK that is 512 x Fs = 4.096 MHz. If you need to change the sample rate, you will need to provide a different MCLK frequency.