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TMS320F28377D-EP: ADC bandwidth clarification

Michael Shklyarman
Genius 12225 points
Part Number: TMS320F28377D-EP

Champs,

Customer requires clarification on the above. Datasheet does not specify bandwidth, only provide input models. For 16.5 pf, 1400 Ohm calculation suggest bandwidth of 6.9 Mhz which seems high. Could you please clarify?

thank you

Michael

  • 0
    TI__Guru 60865 points

    Hi Michael,

    The practical limitation of the input signal speed will be due to aperture jitter, not analog bandwidth.  For 16-bit mode, this will occur a little over 10kHz and in 12-bit mode a little over 100kHz.  This is why we specify SNR/THD/ENOB at 10kHz for 16-bit mode and 100kHz for 12-bit mode.