SBAS761A February 2020 – February 2020 ADS8355
PRODUCTION DATA.
To minimize external components and to maximize the dynamic range of the ADC, the device is configured to operate with an internal reference (REF_SEL register, INT_EXT bit = 1) and a 2 × VREF_x input full-scale range (INPUT_CONFIG register, RANGE_SEL bit = 1). The REFDAC_x registers are programmed to 0x1FFh to program the internal reference to 2.5 V.
Figure 46 shows the FFT plot and test result obtained with the ADS8355 operating at full throughput with a dual-SDO interface and the circuit configuration of Figure 44.
SNR = 86.38 dB, THD = –97.24 dB, fIN = 10 kHz |