Mixed-Signal ADC/DAC Circuit Design
Budget: ₹600 – ₹1,500 INR
I am building a board that needs a compact mixed-signal section dedicated to high-accuracy data conversion. The job is to design the entire ADC/DAC front-end, marrying the sensitive analog path with the supporting digital logic so the output is ready to drop straight onto my main PCB.
What I need from you
• A complete schematic showing the analog input stage, the chosen ADC and DAC devices, reference circuitry, clocking, and the glue logic that links everything to an MCU or FPGA header.
• Component selection with justification, balancing performance, availability, and cost.
• Simulations that verify noise, linearity, and timing (SPICE, LTspice, or similar).
• A clean, well-annotated PCB layout file (Altium, KiCad, or Eagle—your choice, just tell me up front) plus Gerbers ready for fabrication.
• A BOM with manufacturer part numbers and at least one in-stock supplier for every line item.
Acceptance criteria
1. Static and dynamic performance of the ADC path meets the datasheet numbers within ±5 %.
2. DAC output integral non-linearity ≤ 2 LSB across temperature 0–70 °C.
3. Power-on sequence and digital interface are demonstrated in simulation or bench test to run error-free at 3.3 V logic.
4. All design files open without errors in the declared CAD tool.
If you have experience threading analog precision and digital convenience together—especially around modern SAR or delta-sigma converters and low-dropout references—this will be a straightforward engagement. I’ll be responsive for quick turnarounds on questions and reviews so we can iterate rapidly to final release.
What I need from you
• A complete schematic showing the analog input stage, the chosen ADC and DAC devices, reference circuitry, clocking, and the glue logic that links everything to an MCU or FPGA header.
• Component selection with justification, balancing performance, availability, and cost.
• Simulations that verify noise, linearity, and timing (SPICE, LTspice, or similar).
• A clean, well-annotated PCB layout file (Altium, KiCad, or Eagle—your choice, just tell me up front) plus Gerbers ready for fabrication.
• A BOM with manufacturer part numbers and at least one in-stock supplier for every line item.
Acceptance criteria
1. Static and dynamic performance of the ADC path meets the datasheet numbers within ±5 %.
2. DAC output integral non-linearity ≤ 2 LSB across temperature 0–70 °C.
3. Power-on sequence and digital interface are demonstrated in simulation or bench test to run error-free at 3.3 V logic.
4. All design files open without errors in the declared CAD tool.
If you have experience threading analog precision and digital convenience together—especially around modern SAR or delta-sigma converters and low-dropout references—this will be a straightforward engagement. I’ll be responsive for quick turnarounds on questions and reviews so we can iterate rapidly to final release.