Analog circuit design
Signal chains, amplifiers, filters, references, data converters and low-noise front ends.
Discuss thisDesign & SimulationSchematic and circuit design
Schematic and circuit design
that survives review and production.
A schematic is where most product risk is either created or removed. We capture analog, digital, power and mixed-signal circuits, simulate them against real operating conditions, and review the design before layout or firmware is committed.
- Analog, digital & mixed-signal
- SPICE simulation
- Reviewed before layout
Why circuits fail laterMost board failures are design decisions
Most board failures are design decisions
nobody reviewed.
Schematics that are drawn rather than engineered: values chosen from habit, protection left until the first revision, and no simulation behind the critical blocks. Those issues surface during bring-up, when changes are expensive.
We review the electrical intent of a design before it becomes copper. Power budgets, protection strategy, tolerance stack-ups and component tolerances are examined while they are still cheap to change.
Simulation is a design tool, not a report. We run it to answer specific questions about your circuit and explain what the results mean for the build.
- 01Typed and reviewed schematic
Net classes, power flags and design rules applied consistently, so the file behaves predictably in simulation and manufacture.
- 02Simulation that answers questions
Transient, AC, DC operating point and worst-case analysis on the blocks where margin actually matters.
- 03Protection designed in
Over-voltage, reverse polarity, ESD, surge and thermal limits considered as part of the circuit, not added afterwards.
- 04Tolerance and derating checked
Component tolerances, temperature drift and worst-case conditions reviewed before parts are committed to a BOM.
- Reviewed before layoutElectrical intent, protection and margins are checked while changes are still cheap.
- Simulation-led decisionsCritical blocks are simulated across temperature and worst-case corners, not assumed.
- Tolerances accounted forComponent spread and drift sit in the model, so nominal results are not mistaken for guaranteed ones.
- Documentation includedDesign intent, notes and rationale are delivered with the files, not kept in someone’s head.
What we deliver
Circuit design and simulation services
Design work can be scoped as a complete circuit or as a focused block within a larger programme.
Mixed-signal design
Analog and digital partitioning, isolation strategy, shared grounding and crossing between domains.
Discuss thisPower supply design
Converters, regulators, battery front ends, load switches, sequencing and protection.
Discuss thisSchematic capture
Structured, library-managed schematics with design rules, hierarchy and clear net naming.
Discuss thisSPICE simulation
AC, transient, DC sweep, Monte Carlo and worst-case analysis with interpreted results.
Discuss thisDesign review & audit
Independent review of an existing schematic for risk, cost and manufacturability.
Discuss thisWhat is included in scope
Scope is agreed in writing before work starts, so deliverables and responsibilities are clear.
- Requirements and architectureInput ranges, interfaces, supply, environment and targets agreed before capture begins.
- Library and part selectionParts chosen for tolerance, availability, lifecycle and thermal rating rather than brand alone.
- Schematic capture and reviewStructured capture with design rules, followed by an electrical review of every sheet.
- Simulation and analysisAC, transient, DC and worst-case runs on the blocks that decide whether the design works.
- Protection and thermal reviewTransient, ESD and thermal protection confirmed against the declared operating envelope.
- Release packageReviewed schematic, simulation results, design notes and the information layout and test need.
Capabilities
Every circuit type we design
Analog, power, digital and mixed-signal work is delivered against the same review discipline, whether it is a single block or the whole board.
Low-noise analog front ends
Sensor conditioning, instrumentation amplifiers, filtering and references for measurement and audio.
Power conversion
Buck, boost, flyback, LDO and isolated supply design with efficiency and thermal analysis.
Interface & level translation
UART, I²C, SPI, CAN, USB, RS-485 and sensor bus interfacing.
Protection circuits
ESD, TVS, surge, reverse polarity, over-current and thermal shutdown design.
Battery management
Cell protection, fuel gauging, charging profiles and low-power system design.
Motor & drive electronics
Gate drivers, current sensing and control interfaces for brushed, BLDC and stepper systems.
Digital logic design
State machines, control logic, timing and interface bridging in HDL or discrete logic.
Signal integrity basics
Termination, series matching, impedance-aware interfaces and crosspoint design.
Where a design needs silicon rather than discrete parts, see VLSI & ASIC design. Where cost and sourcing decide the architecture, see cost & BOM analysis.
Our process
How a circuit reaches production
The same sequence whether the design starts from a blank sheet or from a schematic that needs review.
Requirements & architecture
Input ranges, interfaces, supply, environment, targets and constraints agreed before capture begins.
Requirements briefSchematic capture
Structured schematic built library-first, with design rules and clear hierarchy.
Schematic filesSimulation & review
Simulation on the critical blocks, tolerance and worst-case review, findings fed back into the design.
Simulation resultsSign-off & release
Reviewed schematic released with design intent, tolerances and notes for layout and test.
Reviewed schematic
Technologies
Tools and platforms we design for
Component selection follows the circuit: availability, tolerance, lifecycle and thermal rating before brand.
- Capture & simulationSchematic capture with SPICE, behavioural and mixed-mode simulation
- Power analysisConverter, regulator and battery path design with efficiency and thermal review
- MCUs & analog ICsARM Cortex-M, RISC-V and 8/16/32-bit MCUs, op-amps, ADCs and references
- Interface & busesUART, I²C, SPI, CAN, RS-485, USB and sensor interfaces
- Signal conditioningAmplifiers, filters, references and level translation
- Protection & safetyESD, surge, over-voltage and thermal protection design
We also plan component lifecycle, approved alternates and test coverage, so a design that works on the bench can still be built two years from now.
Industries
Built for your industry’s environment.
Temperature, vibration, electrical transients and certification needs differ by sector, and they are captured during discovery rather than after the first build.
Automotive
In-cabin electronics, LED drivers and control units designed around automotive electrical and thermal expectations.
AutomotiveIndustrial
Control panels, motor drives, gateways and automation hardware for continuous operation.
IndustrialEnergy & power
Monitoring, metering, conversion and control electronics for energy and power systems.
Energy & powerHealthcare
Diagnostic and monitoring devices designed with patient safety and compliance in mind.
HealthcareRailways
Onboard and signalling electronics built for vibration, temperature cycling and long maintenance cycles.
RailwaysDefence
Rugged, secure and mission-critical systems with controlled supply and documentation.
DefenceCapability examplesSee the engineering problem.
See the engineering problem.
Imagine the possibilities.
The scenarios below illustrate the kind of work we do — they are not published client case studies or measured results. Ask us about relevant experience for your product.
Illustrative · Condition monitoring
A low-noise front end for a vibration sensor
Challenge: A 2 mV signal had to be measured accurately next to a switching power supply.
Approach: A protected, filtered analog chain with a buffered reference, simulated across temperature before layout.
Explore IoT & sensorsIllustrative · Industrial control
A power tree for a 24 V control board
Challenge: Several loads with different tolerances, fed from a wide input range.
Approach: Sequenced supplies with per-rail protection, verified in simulation across the full input range.
Explore manufacturing supportIllustrative · Automotive lighting
A driver for a harsh electrical environment
Challenge: Load dump, temperature extremes and vibration limit off-the-shelf modules.
Approach: A derated custom driver with protection, monitoring and pre-compliance testing.
Explore LED driversFrequently asked questionsGood questions.
Good questions.
Clear starting points.
What buyers usually want to know before scoping this kind of work.
Ask about your requirements →What types of circuits do you design?
Analog, digital, power and mixed-signal circuits — sensor front ends, power supplies, interface and level translation, protection, battery management and control logic.
Do you simulate before layout?
Yes. Transient, AC, DC operating point and worst-case simulation is run on the blocks where margin matters, and the results are interpreted rather than filed away.
Can you review an existing schematic?
Yes. We review existing schematics for electrical risk, protection, tolerance, cost and manufacturability, then prioritise fixes or propose a phased redesign.
What do you deliver at the end?
Reviewed schematic files, simulation results, design intent and notes, plus the information layout, firmware and manufacturing need to build the board.
How long does a circuit design take?
Timelines depend on complexity, component availability and review cycles. Discovery identifies milestones and risks, and a focused first prototype can be planned separately from later enhancements.
How do I get started?
Tell us the product goal, the interfaces and signals involved, the supply and environment, and your expected volumes. A short brief is enough to begin.
Related services
Design & Simulation
Explore the rest of the programme, or get in touch about this service directly.
Start your projectLet’s review your circuit
Let’s review your circuit
before it becomes a board.
Have a design that needs a second opinion, or a block that is not behaving as expected? Tell us what the circuit has to do and where you are today.
No complete specification needed. A short brief of your product and goals is enough to start.
What happens next?
- Share your product goal, application and current stage.
- Discuss the components, interfaces and constraints that matter.
- Agree a practical next step and the scope for a proposal.