SBAS883A February 2018 – June 2018 OPT3101
PRODUCTION DATA.
The photodiode has an IR filter centered at 900 nm as shown in Figure 173. The sunlight spectral irradiance within the spectral bandwidth of the photodiode is also shown in the same figure. The total sunlight power with in the spectral bandwidth of photodiode is 176 watts/m2. The ambient sunlight power received by the photodiode can be calculated using Equation 9. Total ambient current for this photodiode is 49.2 µA. Accounting for variations in reflectivity, the IAMB_MAX_SEL = 12 setting should be selected, which corresponds to 100-µA ambient current support.
where
where
PARAMETER | VALUE | UNIT | COMMENTS |
---|---|---|---|
Photodiode current with 1 mW/cm2 | 90 | µA | Photodiode specification |
Half-angle | ±10 | Degrees | Photodiode specification |
Total sunlight power in photodiode spectral bandwidth falling on the object | 175 | W/m2 | Calculated from sunlight spectra (see Figure 173) |
Total power received at the photodiode | 0.2736 | mW/cm2 | Calculated using Equation 10 |
Ambient current | 49.2 | µA | Calculated from 0.2736 mW/cm2 × 90 µA/ (1 mW/cm2). An additional factor of 2 should be added to account for the photodiode response outside the specified half angle of ±10 degrees. |
Reverse bias capacitance at VR = 1 V | 5.8 | pF | AFE supports a maximum capacitance of 6 pF. |