Table 4.
ASIC amplifier parameters.
| Parameters | Thermopile Channels | Pt1000 Channels |
|---|---|---|
| Full Scale (Differential Output) | 4 VP-P | 4 VP-P |
| Nominal Bias Current | - | 1,000 μA (62.5 ms) |
| Amp Gain | 64, 128, 256, 2,048 V/V | 4 V/V |
| Input Offset | 5 μV | 10 μV |
| Input Differential Impedance | 3,000 MΩ | - |
| Amp RMS Noise Contribution | 15 μVRMS/√Hz | 15 μVRMS/√Hz |
| CMRR (DC) | 66 dB | 66 dB |
| Gain Absolute Accuracy | 1% | - |
| Analog Chain Stability | - | 0.1 K |
| Beginning-of-Life (Output Amp Accuracy) | - | 0.15 K |
| End-of-Life (Output Amp Accuracy) | 125 μV | 0.2 K |