JAJSJL9A March 2021 – October 2021 ADS7067
PRODUCTION DATA
The optimal input driver circuit for a high-precision SAR ADC consists of a driving amplifier and a charge-kickback filter (RC filter). The amplifier driving the ADC must have low output impedance and be able to charge the internal sampling capacitor to a 16-bit settling level within the minimum acquisition time. The charge-kickback filter helps attenuate the sampling charge injection from the switched-capacitor input stage of the ADC and helps reduce the wide-band noise contributed by the front-end circuit.