Programmable ADC IP

A high-performance, programmable Analog-to-Digital Converter (ADC) IP core designed for mixed-signal SoC integration. Features include:

🔧 Core Features: • Configurable resolution (8-16 bit) • Programmable sampling rates (1-100 MSPS) • Built-in PGA with gain control • SAR DAC with calibration • Advanced sample & hold circuit • Real-time performance monitoring

🛠 Design & Verification: • SystemVerilog RTL implementation • Analog schematic entry (Xschem) • Mixed-signal simulation (ngspice/Xyce) • Layout design (Magic/KLayout) • DRC/LVS verification (Netgen) • Comprehensive testbench suite

📊 Verification Tools: • UVM-compliant testbenches • Coverage-driven verification • Automated test harness reporting • Multi-simulator support (VCS, Questa, Verilator) • Open-source EDA tools (ngspice, Magic, Netgen) • Mixed-signal simulation and verification

🎯 Use Cases: • IoT sensor interfaces • Audio processing systems • Medical instrumentation • Industrial control systems • High-speed data acquisition

Built following Vyges IP development standards with automated documentation, verification flows, and integration examples.

🚀 Quickstart

1. Clone the Repository:

   git clone https://github.com/vyges/programmable-adc.git
   cd programmable-adc

2. Setup Environment:

   # Install Vyges CLI (if not already installed)
   pip install vyges-cli
   
   # Initialize project with Vyges
   vyges init --interactive

3. Run Simulation:

   # Run basic functional test
   vyges test --simulation
   
   # Run with Cadence PDK support
   vyges test --simulation --pdk cadence

4. Generate Documentation:

   # Generate test harness report
   python scripts/generate_test_harness_report.py vyges-metadata.json
   
   # View comprehensive documentation
   open Developer_Guide.md

5. Next Steps:

   • Review RTL implementation in rtl/
   • Explore testbenches in tb/
   • Check Cadence PDK integration in flow/cadence/
   • See Developer_Guide.md for advanced usage

🔧 Project Structure

programmable-adc/
├── rtl/                    # SystemVerilog RTL implementation
│   ├── programmable_adc.sv # Main ADC module
│   ├── pga_model.sv        # Programmable Gain Amplifier
│   ├── sar_dac.sv          # SAR DAC with calibration
│   ├── comparator.sv       # High-speed comparator
│   └── sample_hold.sv      # Sample & Hold circuit
├── analog/                 # Analog design files (Efabless flow)
│   ├── xschem/            # Schematic entry (Xschem)
│   ├── magic/             # Layout database (Magic)
│   ├── netlist/           # SPICE netlists
│   ├── gds/               # Final GDS layout
│   ├── lef/               # Abstract layout views
│   └── macros/            # Reusable analog components
├── simulation/             # Mixed-signal simulation
│   ├── configs/           # Simulation configurations
│   ├── results/           # Simulation results
│   └── waveforms/         # Waveform files
├── layout/                 # Layout verification
│   ├── constraints/       # Layout constraints
│   ├── lvs/              # Layout vs Schematic
│   └── drc/              # Design Rule Checks
├── tb/                     # Testbenches and verification
│   ├── sv_tb/             # SystemVerilog testbenches
│   ├── cocotb/            # Python-based verification
│   └── Makefile           # Test automation
├── flow/                   # EDA tool flows
│   ├── cadence/           # Cadence PDK integration
│   ├── openlane/          # Open-source ASIC flow
│   └── vivado/            # FPGA synthesis flow
├── scripts/               # Automation scripts
│   ├── generate_test_harness_report.py
│   └── code_kpis.py
├── docs/                  # Documentation
├── integration/           # Integration examples
└── vyges-metadata.json   # Vyges metadata specification

🧪 Verification & Testing

Supported Simulators

• VCS (Synopsys) - Primary commercial simulator
• Questa (Mentor/Siemens) - Advanced verification features
• Verilator - Open-source simulation
• Spectre (Cadence) - Analog simulation

Test Coverage

• Functional Tests: Basic ADC operation and calibration
• Performance Tests: Speed, accuracy, and power measurements
• Corner Tests: Process, voltage, temperature variations
• Integration Tests: SoC-level integration scenarios

Cadence PDK Integration

• Behavioral Models: Realistic analog circuit modeling
• Spectre Netlists: Ready-to-simulate circuit descriptions
• Virtuoso Schematics: Layout-ready design files
• Calibre LVS: Layout vs. schematic verification

📚 Documentation

• Developer_Guide.md - Comprehensive development guide with AI-assisted workflows
• docs/architecture.md - Detailed ADC architecture and design decisions
• docs/waveforms.md - Simulation waveforms and timing analysis
• flow/cadence/README.md - Cadence PDK integration guide
• vyges-metadata.json - Complete Vyges metadata specification

🛠️ Development Tools

This IP is designed to work with the complete Vyges ecosystem:

• Vyges CLI - Command-line interface for IP development and automation
• Vyges Catalog - IP catalog and discovery platform
• Vyges IDE - Integrated development environment with mixed-signal support
• AI-assisted development - Comprehensive AI context and guidance for analog design
• Cadence Virtuoso - Layout and schematic design integration
• Spectre/Calibre - Analog simulation and verification tools

📄 License

This template is licensed under the Apache License 2.0. See LICENSE for details.

🤝 Contributing

Contributions are welcome! Please see CONTRIBUTING.md for guidelines.

📞 Support

• Documentation: Developer_Guide.md
• Issues: GitHub Issues
• Discussions: GitHub Discussions
• Cadence PDK Support: flow/cadence/README.md