This project implements a VCO-Based ADC on skywater 130nm for IoT.

The ADC Specification:

• Target bandwidth: <100KHz for speed recording or IoT sensor readout.
• First-order noise shaping Sigma-Delta Architecture
• Configurable oversampling rate up-to 1024
• VCO linear frequency range: 2-10MHz
• 11 delay cells & 11 phase readout
• 32-bit sin3 filtter

The VCO is designed using the full custom design flow. It uses a special inverter which has been tuned such that the linear frequency range from 2MHz to 10MHz.

The sin3 filter is used to provide the first-order noise shaping.

Except for the VCO, the rest of the design has been implemented using the digital design flow.

• Duc-Manh Tran: VCO design, simulation & layout
• Ngo-Doanh Nguyen: System integration, RTL design & software for RISC-V
• Duy-Hieu Bui and Xuan-Tu Tran: PI
• The-Anh Nguyen
• Manh-Hiep Dao

Refer to README for a quickstart of how to use caravel_user_project

Refer to README for this sample project documentation.

Refer to the following readthedocs for how to add cocotb tests to your project.