JAJSES4A February 2018 – April 2020 ADC08DJ3200
PRODUCTION DATA.
7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
OSFILT_BW | OSFILT_SOAK | ||||||
R/W-0011 | R/W-0011 |
Bit | Field | Type | Reset | Description |
---|---|---|---|---|
7-4 | OSFILT_BW | R/W | 0011 | This field adjusts the IIR filter bandwidth for the offset filtering feature (enabled by CAL_OSFILT). More bandwidth suppresses more flicker noise from the ADCs and reduces the offset spurs. Less bandwidth minimizes the impact of the filters on the mission mode signal.
OSFILT_BW: IIR coefficient: –3-dB bandwidth (single sided) 0: Reserved 1: 2-10 : 609e-9 × FDEVCLK 2: 2-11 : 305e-9 × FDEVCLK 3: 2-12 : 152e-9 × FDEVCLK 4: 2-13 : 76e-9 × FDEVCLK 5: 2-14 : 38e-9 × FDEVCLK 6-15: Reserved |
3-0 | OSFILT_SOAK | R/W | 0011 | This field adjusts the IIR soak time for the offset filtering feature. This field applies when offset filtering and background calibration are both enabled. This field determines how long the IIR filter is allowed to settle when first connected to an ADC after the ADC is calibrated. After the soak time completes, the ADC is placed online using the IIR filter. Set OSFILT_SOAK = OSFILT_BW. |