Services

PCB & Schematic · SI / PI · FMEDA & FMEA · IP Catalogs · RISC-V / SoC · Verification · Due Diligence · Packages


Why work with us

Why circuit-design.space

From Fortune 500s to startups, our team blends deep industry knowledge with a genuine appetite for what’s next — and the delivery discipline to ship it.

Delivery

Exceptional management and delivery — every project owned end-to-end.

Technology

Cutting-edge tools, chosen for the problem rather than the trend.

Quality

Driven by quality — zero-failure delivery is the standard, not the stretch goal.

Speed

One week from first conversation to project kickoff.

Talent

Top-tier industry talent across design, engineering, and production.

Partnership

We work as an extension of your team, not a vendor at arm’s length.


1. PCB Design, Schematic Capture & Layout

Our core work. Most of it is mixed-signal: an FPGA or microcontroller next to sensitive analog front-ends, clean power rails, and a fabric of signal-integrity constraints that have to be settled before routing starts.

  • Cadence Allegro
  • Altium
  • 4 to 20+ layers
  • Blind/buried vias, HDI
What we deliver
  • Schematic capture: Cadence Allegro, Altium, OrCAD. Library management, BOM discipline
  • Circuit analysis and design: analog front-ends, power supplies (switchers and LDOs), clocking trees, reset/brownout, level shifting, isolation
  • PCB layout: multi-layer stackups including buried capacitance, controlled impedance, blind/buried vias, HDI. 4-layer to 20+ layers
  • Simulation: LTspice for analog, thermal hand-analysis with FEA where the power density warrants it
  • Design for manufacture: fabrication and assembly constraints applied while the layout is still movable, not after the quote comes back
  • Fabrication: PCB manufacturing resource available — we can take a design from schematic to populated board without you chasing vendors
Typical engagements
  • Circuit design only (customer does layout)
  • Full schematic + PCB layout
  • Design review of an existing board (1 week, fixed scope)
  • Failure analysis and debug on an existing product
Free tool: our vendor-neutral buck converter calculator sizes the inductor and both output-capacitance requirements without steering you toward anyone’s part number.

2. Signal & Power Integrity, EMI/EMC

Boards fail in the chamber and in the field for reasons that were settled at stackup. We model them before that happens — and when a product is already built, we find out why it is misbehaving rather than guessing.

  • Ansys SIwave
  • Siemens HyperLynx
  • IBIS / IBIS-AMI
  • Pre- and post-layout
What we deliver
  • Pre-layout constraint development: topology, termination, stackup and impedance targets fixed before routing starts
  • Post-layout verification: SIwave and HyperLynx run on the real board, not on the intent
  • Power integrity: PDN impedance targets, decoupling strategy, plane resonance and IR-drop analysis
  • Signal integrity: reflection, crosstalk, timing and eye closure using IBIS and IBIS-AMI models
  • 3D field solver analysis where the geometry stops behaving like a transmission line — connectors, via transitions, breakout regions
  • EMI/EMC: design for pre-compliance before you step into the chamber
  • Failure analysis: measurement on the bench, correlation back to the model, and the fix
Typical engagements
  • Pre-layout constraint study (1–2 weeks)
  • Post-layout SI/PI verification of an existing design (1–2 weeks)
  • PDN and decoupling review (1 week, fixed scope)
  • Failure analysis and debug on a product already in the field
Free tools:PDN target impedance works out how low the impedance has to be and how many capacitors that takes; the decoupling impedance plot then shows the anti-resonant peaks that estimate is blind to; and via stub resonance settles whether a link needs backdrilling.

3. Functional Safety — FMEDA & FMEA Review (ISO 26262)

Safety-critical board and silicon designs live or die on diagnostic coverage. FMEDA — Failure Modes, Effects, and Diagnostic Analysis — is where that coverage gets proven to auditors.

  • ISO 26262
  • IEC 61508 / 62304 / DO-254
  • Board and silicon level
  • Pre-audit gap analysis
What we deliver
  • FMEDA spreadsheets and reports for ASIL-A through ASIL-D parts
  • Design FMEA and Process FMEA review — structure, ranking discipline, and whether the listed actions actually close the risk they claim to
  • Failure rate (FIT) budgets per subsystem
  • Diagnostic coverage modeling, including latent-fault detection
  • Safety mechanisms: lockstep cores, ECC strategies, watchdog architectures, BIST
  • Safety case artifacts: assumptions of use, safety goals, safety requirements traceability
  • Pre-audit gap analysis — what your existing documentation is missing before the certification body arrives
Typical engagements
  • Review an existing FMEDA or FMEA and identify gaps (1–2 weeks)
  • Build an FMEDA from scratch for a new board, IP or module (3–8 weeks)
  • On-call safety engineer during an active certification cycle
Tools & standards: ISO 26262, IEC 61508 (adjacent), IEC 62304 (medical), DO-254 (airborne) — core methodology transfers across all four.
Free tools:ASIL determination, the FIT and PMHF budget calculator, the FMEDA rollup, board FIT from a BOM and FMEA action priority — all free, all in your browser. See all nine tools.

4. Safety Soft-IP & Verification IP

Alongside the design services we license two catalogs: safety-instrumented soft-IP with the safety analysis already done, and independent verification IP written clean-room from the public protocol specifications.

What we deliver
  • Safety Soft-IP: 182 blocks with published SPFM/LFM figures, FMEDA, IP-XACT descriptors and formal sign-off — the analysis ships with the block, not as a later invoice
  • Subsystems: safety island, NPU island, coherent fabric (CHI), post-quantum cryptography
  • Verification IP: 139 protocol VIP catalogued, 55 shipping today — BFMs, monitors and passive protocol checkers
  • Independent second source: our VIP is written from the public specification, so it can genuinely disagree with your primary vendor’s VIP rather than share its assumptions
  • Integration support: bringing a catalog block into your design, with its safety case intact
Typical engagements
  • License a block or a VIP (deliverables and terms under mutual NDA)
  • Second-source verification of a protocol you already have a VIP for
  • Custom safety instrumentation of an existing block

5. RISC-V / SoC Architecture

Our principal has been defining silicon for over two decades — from custom cores at IBM and Apple to full SoC architecture at APCON and Intensivate-era RISC-V work.

What we deliver
  • Core specifications: ISA profile selection, pipeline definition, microarchitecture trade-offs
  • Cache and memory hierarchy design (L1/L2/L3, coherence protocol choice, MMU/PMP configuration)
  • Custom ISA extensions for domain-specific workloads
  • Full SoC integration: bus fabric (AXI, CHI, TileLink), NoC topology, power domains, clock domains
  • Architecture reviews — does the proposed design actually meet the performance, power, and area targets, and if not, where’s the leak?
  • Pre-RTL modeling (cycle-approximate SystemC or pure-Python)
Typical engagements
  • Design review (1 week, fixed scope)
  • Architecture definition for a new core or SoC (1–3 months)
  • Advisory retainer — monthly check-in + on-call for a team doing their own implementation

6. Verification & Emulation

Verification eats schedules. We’ve spent years pushing testbenches, formal, and emulation platforms to close coverage faster.

What we deliver
  • Simulation-based verification: SystemVerilog + UVM testbenches, constrained-random generation, functional coverage closure
  • Formal verification: JasperGold, Synopsys Formal. Property specification, assume/assert strategy, bounded and unbounded proofs
  • Specification-level verification: TLA+ models for protocol correctness before RTL exists
  • Emulation bring-up: Synopsys ZeBu and HAPS platforms. Design partitioning, clock domain handling, DUT instrumentation, regression flows
  • FPGA prototyping: Xilinx-based prototypes for software bring-up ahead of tape-out
  • Tool ownership: Synopsys VCS and Verdi, Cadence Xcelium, waveform-first debug methodology
Typical engagements
  • Testbench audit — find coverage gaps in an existing environment (1–2 weeks)
  • Formal property set for a new block (2–6 weeks)
  • ZeBu/HAPS bring-up for a new SoC (4–12 weeks)
  • TLA+ model for a contested protocol spec (1–3 weeks)

7. Technical Due Diligence

For VCs evaluating a hardware investment, acquirers inspecting a target, or boards that want a second opinion on their own team’s plans.

  • Light — 1 week
  • Standard — 2 weeks
  • Deep — 3–4 weeks
  • Written risk-ranked report
What we deliver
  • Architecture soundness: does the proposed silicon or system actually do what the pitch claims?
  • Execution risk: are the schedules realistic? Is the team sized for the work? What’s the critical path?
  • IP review: freedom-to-operate check, open-source license exposure, third-party IP dependencies
  • Team capability assessment: interviews with key engineers, code/RTL samples, tool proficiency
  • Comparable analysis: how does this compare to what competitors are doing or have shipped?
  • Written report: executive summary + detailed findings + risk-ranked recommendations
Typical engagements
  • Light DD — 1 week, documentation and interviews only
  • Standard DD — 2 weeks, includes one-day site visit and deeper code/RTL inspection
  • Deep DD — 3–4 weeks, includes running hands-on evaluation of the tech

Start here

Fixed-scope engagements

Short, bounded pieces of work with a defined deliverable and a known duration — the usual way a longer engagement starts. Each one ends in a written artifact you keep, whether or not the work continues.

30-minute project consult →
30 minutes

Bring a schematic, a stackup, a failing board or a specification that is not yet a design. Half an hour on your actual problem and a straight answer about whether it needs a review, a redesign, or nothing at all. Books straight into the calendar.

Board design review
1 week

Fixed scope. Schematic and layout against manufacturability, signal integrity and safety intent — findings ranked by what they actually let through.

FMEDA / FMEA gap review
1–2 weeks

We read your existing analysis and tell you what an auditor will find missing, before the certification body arrives.

Pre-layout SI/PI constraint study
1–2 weeks

Stackup, impedance targets, topology and termination settled before routing — the cheapest point at which any of it is still free to change.

Post-layout SI/PI verification
1–2 weeks

SIwave and HyperLynx on the board you actually have, with the PDN and eye closure written up.

Architecture design review
1 week

Fixed scope. Does the proposed silicon or system meet its performance, power and area targets — and if not, where is the leak?

Light technical DD
1 week

Documentation and interviews. Architecture soundness and execution risk for an investment decision.


All engagements by negotiation

Scope, rate, and terms tailored to the project. Short reviews, multi-month builds, fractional engineering — all on the table.