Table 3.
Core-CBCM capacitance-to-frequency converter specifications.
| Parameter | Value |
|---|---|
| Technology | 0.18 μm |
| Supply voltage | 1.8 V |
| Each electrode area | 80 μm × 295 μm |
| Interface circuit area | 24 μm × 300.98 μm |
| Power consumption (for 35 fF) | ~ 103 μW |
| ▪ CBCM and current mirrors | 4.2 μW |
| ▪ CCO | 90.234 μW |
| ▪ Digital circuit | 1.3 μW |
| Sensitivity | 138 pulses/fF |
| Sampling frequency | 100 kHz |
| Dynamic range | 70 fF |
| Linearity (R2) | 0.9996 |
| Resolution | |
| ▪ In the ideal case without considering the error due to nonlinearity | ~8 aF |
| ▪ By considering the maximum error due to nonlinearity | ~873 aF |
| ▪ With interpolation and pre-distortion | ~10 aF |