The ADC incorporates precharge buffers that reduce the settling and bandwidth requirement of the analog input driver. If a 10-MHz or less bandwidth driver is used, or if there is a long distance between the driver and the ADC inputs (such as a cable connection), enable the input precharge buffers. For higher gain-bandwidth drivers, the precharge buffers can be disabled to reduce power consumption, but in any case, best gain error performance is achieved with the input precharge buffers active. In low-speed mode operation, the modulator sample rate is significantly reduced, therefore the driver has more time to settle between the input sampling pulses. Using a lower bandwidth input driver or disabling the precharge buffers can be practical options for low-speed operation.