The recovered executor is actively building the schematic now; the prior runs had only completed sourcing. I’m waiting for the mutations and verification to finish before independently checking the result.
The executor completed and the project is now populated with 96 components, 18 unique part types, and 34 nets. The schematic includes the main RF chain and selected 9 V battery power architecture parts, including TPS62160DSGT, TPS7A2033/2050, TPS60403DBVRG4, MCP6566 comparator, HMC8410, ADE-1 mixers, GALI-74+ amplifiers, both IF filters, and Amphenol 132255-11 SMAs.
I could not retrieve the executor’s final detailed report or independently reconcile connectivity/ERC, calculations, and documentation before the execution budget ended. PCB layout has not been started.
Remaining work:
Review the executor’s final report and inspect all 96 components/connections.
Run independent ERC and correct actionable errors.
Verify power sequencing, regulator headroom, filter terminations, and cascade calculations.
Confirm schematic readability and document remaining risks before layout.
Complete schematic:Failed / blocked before mutation. The project remains empty because the hard stop rules were triggered during sourcing and power validation.
Exact-part sourcing:Failed for two required library entries. Flux has no exact CFUMT6-45.000-F75IL03AL and no exact TPS60403DBVR; only TPS60403DBVRG4 is available. Missing-part requests were submitted for both.
Schematic placement and wiring:Unattempted because exact-part and power-headroom blockers must be resolved first.
ERC/design review:Unattempted because no schematic was safely created.
Cascade gain/NF/sensitivity estimate:Unattempted because the required exact filter termination/specification is internally inconsistent and the architecture is blocked before a trustworthy sourced cascade can be completed.
Blocking Findings
1. VIN_5V_RAW cannot produce a regulated 5.0 V rail through TPS7A2050PDBVR
The TPS7A2050PDBVR requires 0.3 V input headroom above nominal output for its specified output-tolerance operating range. Its DBV-package maximum dropout is 145 mV at 300 mA for outputs in the 2.5 V to 5.5 V range. Therefore a nominal 5.0 V input cannot guarantee a regulated 5.0 V output. The power architecture must change: raise the raw input above 5.3 V with tolerance, use a lower RF rail, bypass the 5 V LDO, or use a suitable buck-boost/boost arrangement.
2. Exact FL1 evidence conflicts with the supplied termination
The exact HCI CFUMT6-45.000-F75IL03AL is absent from the Flux library. Current manufacturer-family and distributor data identify it as a 45 MHz, 7.5 kHz, four-pole UM-1×2 filter with approximately 3 dB insertion loss, but public listings state 600 Ω, while the supplied design requirement states 650 Ω // 2 pF. This conflict changes the matching network and blocks safe part creation/wiring until the exact order-code datasheet or manufacturer confirmation is supplied.
3. Exact TPS60403 library entry is absent
TI identifies TPS60403DBVR as an active orderable DBV-package device, but the Flux library only exposes TPS60403DBVRG4 and other variants. Because the brief requires the exact MPN and prohibits substitution, the charge-pump block was not placed.
4. RC-only positive-rail sequencing is not guaranteed
TPS7A2050 enable thresholds are 0.9 V minimum for enable-high and 0.3 V maximum for enable-low. A 100 kΩ / 100 nF delay driven by 5 V crosses 0.9 V after only about 2 ms. The TPS60403 output is unregulated and load-dependent. Without a negative-rail supervisor/comparator or a verified worst-case startup-time guarantee, this RC does not prove that VGG_NEG is established before V5_RF.
Non-Blocking Selection Work Completed
SMA connector
Selected candidate: Amphenol RF 132255-11, 50 Ω end-launch SMA female, rated to 18 GHz and specified for board thickness up to 2.16 mm. This is suitable for the planned 1.6 mm board, subject to later mechanical land-pattern review.
34.3 MHz fundamental: approximately 0.53 dB insertion loss
68.6 MHz second harmonic: approximately 8.97 dB attenuation
Approximately 3.21 dB at 50 MHz
This is practical but provides only about 9 dB second-harmonic rejection; a higher-order filter may be preferable if the square-wave LO source has strong harmonic content.
Required Decisions Before Schematic Work Can Resume
Resolve the 5 V rail conflict by changing the input-voltage requirement or regulator architecture.
Provide or approve authoritative exact-order-code documentation for FL1, including terminal assignment, footprint, and whether its termination is 600 Ω or 650 Ω // 2 pF.
Add/approve creation of exact TPS60403DBVR, or explicitly approve the TPS60403DBVRG4 library entry as equivalent.
Approve a deterministic negative-bias supervisor/sequencer if the HMC8410 datasheet requires negative gate bias before drain supply under all conditions.
Scope Status
Blocking Findings
1. `VIN_5V_RAW` cannot produce a regulated 5.0 V rail through TPS7A2050PDBVR
2. Exact FL1 evidence conflicts with the supplied termination
3. Exact TPS60403 library entry is absent
4. RC-only positive-rail sequencing is not guaranteed
Non-Blocking Selection Work Completed
SMA connector
LO2 low-pass proposal
Required Decisions Before Schematic Work Can Resume