Table 8 Key specifications of detectors on MMS
From: Mars Mineralogical Spectrometer (MMS) on the Tianwen-1 Mission
| CCD | MCT FPA | ||
|---|---|---|---|
| Parameters | Typical value | Parameters | Typical value |
| Active pixels | 1024 × 1024 | Array size | 512 × 320 |
| Pixel size | 13 × 13 μm | Pixel size | 25 μm × 25 μm |
| Storage pixels | 1024 × 1033 | Temperature range | 80/150 K Controllable |
| Peak output voltage | 540 mV | Output saturation voltage | 2.225 V |
| Dynamic range | 50,000:1 | Frame frequency | 60.44 Hz |
| Number of output amplifiers | 2 | Temperature stability | 0.2 K @ 30 min |
| Output amplifier responsivity | 4.5 μV/e− | Number of GPIO | 4 bus |
| Readout noise at 253 K | 2 rms e−/pixel | Temperature control precision | −0.3 K |
| Maximum readout frequency | 5 MHz | Non-linearity | 0.00764 |
| Dark signal non-uniformity at 293 K | \(2~\text{ke}^{-}\text{/pixel}\) | Non-uniformity | 4.80% |
| Weight | 7.5 g | Weight | 765.7 g |
| Package size | \(22.7\times 42.0~\text{mm}\) | Integration capacitance | \(1.6~\text{Me}^{-}\) |