Switched capacitor network
Budget: ₹1,500 – ₹12,500 INR
The primary challenge in MEMS readout design is capturing microscopic, sub-femtofarad
variations in sensor capacitance without the signal being overwhelmed by parasitic noise or
electrical interference. While a front-end switched-capacitor (SC) network is highly effective for
this capacitance to voltage conversion, its resolution is heavily limited by the non idealities of
the internal amplifier. Dynamic amplifiers offer an excellent solution for low-power operation,
but they suffer from severe gain variations and performance degradation when moving from
theoretical models to practical hardware realization.
Key Objectives of this Work:
1. SC Circuit Optimization: Design a switched-capacitor network capable of detecting
sub-femtofarad changes while minimizing background noise.
2. Amplifier Performance Comparison: Analyze single-ended amplifier characteristics across
three distinct paradigms within the Switched capacitance circuit ideal models, practical
op-amps, and op-amps utilizing dynamic biasing.
3. Standalone FIA Evaluation: Implement and test a standalone 2-stage dynamic Floating
Inverter Amplifier (FIA) to independently verify its gain, isolation, and low-power
performance.
variations in sensor capacitance without the signal being overwhelmed by parasitic noise or
electrical interference. While a front-end switched-capacitor (SC) network is highly effective for
this capacitance to voltage conversion, its resolution is heavily limited by the non idealities of
the internal amplifier. Dynamic amplifiers offer an excellent solution for low-power operation,
but they suffer from severe gain variations and performance degradation when moving from
theoretical models to practical hardware realization.
Key Objectives of this Work:
1. SC Circuit Optimization: Design a switched-capacitor network capable of detecting
sub-femtofarad changes while minimizing background noise.
2. Amplifier Performance Comparison: Analyze single-ended amplifier characteristics across
three distinct paradigms within the Switched capacitance circuit ideal models, practical
op-amps, and op-amps utilizing dynamic biasing.
3. Standalone FIA Evaluation: Implement and test a standalone 2-stage dynamic Floating
Inverter Amplifier (FIA) to independently verify its gain, isolation, and low-power
performance.