| Ref No | No of Active Components | No Passive Components floating or Grounded: R - C | Grounded Capacitor | Electronic tunability | Component Matching Condition |
| 1 | CFTA | 1 Resistor, 1 Capacitor | Yes | Yes | No |
| 2 | VDTA | 1 Capacitor | No | Yes | No |
| 8 | DDCC | 3 Resistor, 1 Capacitor | Yes | No | No |
| 9 | OTA | 1 Capacitor | Yes | Yes | No |
| 10 | CDTA | 1 Capacitor | No | Yes | No |
| 11 | VDIBA | 1 Capacitor | No | Yes | No |
| 24 | FDCCII | 2 Resistor, 1 Capacitor | Yes | No | No |
| 25 | CDBA | 3 Resistor, 1 Capacitor | No | No | Yes |
| Proposed Work | VDVTA, OTA | 1 Capacitor | Yes | Yes | Yes |