Project Startup Help

flux

The TX/RX split tasks are still running longer than the wait window. I’ll check their status and report where they stand.

flux

Both split tasks are actively working: TX is pruning RX-only circuitry; RX is pruning TX-only circuitry and replacing the XLR. I’ll give them one more wait window before reporting final status.

flux

They’re still running. I’ll check final status once more and then give you the project links and current state so you’re not blocked waiting.

flux

Created two separate PCB projects and started the split/place work in each:
Current status:
  • TX clone: RX circuitry removed, board-mounted XLR replaced with compact XLR harness pads, 25 × 80 mm / 4-layer target set, placement still running.
  • RX clone: TX circuitry removed, board-mounted XLR replaced with compact XLR harness pads, 25 mm width / 4-layer target set, placement still running.
  • Master project remains unchanged as the system/reference design.
Open item:
  • Both split-placement tasks are still running; they exceeded the wait window but are actively working on non-RF placement and verification.
Next step:
  • Open each project link later to review the completed thread result, or ask me to check their status again.
Check split projects
Check TX status
Check RX status
Fix failed split tasks
Compare split BOMs
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Files

Schematic

Layout

Preview

Power Budget — Munkrofon
Status
Draft estimate. Final values must be recalculated after the RF module datasheet and exact audio-output level are locked.
Transmitter Loads

Table

RailLoadTypicalPeak / marginNotes
3.3 VDA14AVDDECT-class RF module TX role46 mA150 mA budgetRenesas page cites 46 mA LPM talking; peak needs datasheet confirmation.
3.3 V / analogTHAT1580-family mic preamp8–15 mA25 mA budgetExact current depends on selected part and supply.
3.3 VFuel gauge / status/control<1 mA5 mA budgetMAX17048 active current is very low.
3.3 VLEDs / indicators0–10 mA20 mA budgetOptional.
3.3 V total~65–75 mA~200 mA design targetSize regulator at ≥300 mA, preferably 500 mA.
Receiver Loads

Table

RailLoadTypicalPeak / marginNotes
3.3 VDA14AVDDECT-class RF module RX role35 mA150 mA budgetRenesas page cites 35 mA LPM listening; peak needs datasheet confirmation.
3.3 V or analog railCodec / filter / control5–20 mA40 mA budgetDepends on final audio path.
Analog output railsBalanced line driver5–20 mA50+ mA budgetProfessional +4 dBu output may require boosted/split rails.
3.3 V total~50–75 mA~200 mA design targetExcludes any boosted output-rail loss.
Battery and Charging Assumptions
  • Battery: 800–1200 mAh single-cell Li-ion/LiPo.
  • Charge current: 500 mA initial target for USB compatibility and heat control on a narrow board.
  • Estimated runtime with 1000 mAh cell:
    • Transmitter: roughly 8–12 h at 75–120 mA average, before regulator losses and battery aging.
    • Receiver: roughly 7–12 h depending heavily on output-stage rail design.
  • Charge time: roughly 2.5–3 h at 500 mA for a 1000 mAh cell, including taper phase.
Power-Path Component Direction
  • Charger/power path: BQ24074/BQ24075-class device, unless DA14AVDDECT integrated battery management is used instead.
  • 3.3 V rail: 500 mA low-noise LDO class device for RF/audio margin.
  • Fuel gauge: MAX17048-class if there is a host/controller or RF module interface to read I2C.
  • Battery protection: use a protected cell or add board-level protection such as DW01A + dual MOSFET.
Open Power Questions
  1. Does the final RF module own charging/power-path management?
  2. What is the real RF peak current during transmit bursts?
  3. What output level is required at the receiver XLR: mic level, +4 dBu line level, or higher headroom?
  4. Is operation while charging required to be studio-clean, or is battery-only performance the priority?
  5. Will the battery pack already include protection circuitry?

  • Status

  • Transmitter Loads

  • Receiver Loads

  • Battery and Charging Assumptions

  • Power-Path Component Direction

  • Open Power Questions