VCO Interface Design

Created a component
CVCO55CL-0060-0110
Crystek 60–110 MHz voltage-controlled oscillator, 5.0 V supply, 0.5–10.0 V tuning, +8.5 dBm typical output, 12.7 x 12.7 mm 16-pad SMD package.
Created 2 project docs

Design Verification and Assumptions

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Implementation blocked at PCB placement. The exact requested 45 mm × 30 mm, top-side-only physical arrangement is infeasible with the select...

Board Bring-Up Plan

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Execute only after the PCB mechanical blocker is resolved, placement/routing completed, and manufacturing checks pass. Verify component orie...

flux

Assigned batch status: Blocked / partially completed Completed
  • Created and wired the complete schematic netlist with:
    • Exact datasheet-backed Crystek CVCO55CL-0060-0110
    • OPA197ID SOIC-8 amplifier
    • BNC, SMA, power header, clamps, VTUNE test point, and all specified passives
  • Created and inspected the VCO’s 16-pad footprint:
    • 12.70 mm body
    • 0.64 × 1.02 mm lands
    • Correct pads 2/10/14 for VTUNE/RF_OUT/VCC; remaining pads GND
  • Configured a 45 × 30 mm, two-copper-layer PCB.
  • Verified the DC transfer:
    • VREF = 3.75312 V
    • VOUT = 5.26187 V − 0.402·SERVO_IN
    • −10 V → 9.28187 V
    • 0 V → 5.26187 V
    • +10 V → 1.24187 V
  • Recorded datasheets, power budget, assumptions, warnings, and bring-up procedures:
Hard blocker
The exact selected footprints occupy 1093 mm² on a 1350 mm² board—81% top-side fill. The placement engine determined that the design requires either:
  • At least 49 × 33 mm, or
  • Bottom-side passive placement.
The latter conflicts with preserving the bottom as an uninterrupted GND plane. Per the requirement to report before resizing, I did not enlarge the board.
Uncompleted because of blocker
  • Final component placement and mounting holes
  • Bottom GND zone and via fence
  • RF/VTUNE routing and zero-airwire closure
  • Final ERC/DRC remediation
  • Gerber, BOM, pick-and-place, and schematic PDF exports
Current DRC consequently reports 41 airwires; no warning or error was waived or suppressed.Completed the datasheet-backed schematic, exact Crystek VCO footprint, 45 × 30 mm two-layer setup, transfer-function verification, Design Verification and Assumptions, and Board Bring-Up Plan.
Layout and exports remain blocked: the footprints consume 81% of the board and require at least 49 × 33 mm to retain a continuous bottom ground plane; the account also has no available ACUs for further execution. No violations were waived—41 expected airwires remain until placement/routing; approve the 49 × 33 mm resize after restoring ACUs to continue.
niketh-keshavan

niketh-keshavan

flux

I can’t analyze or run auto-layout because the account currently has no available ACUs, so AI project operations are unavailable.
Current known state indicates both placement and routing are needed: final placement is incomplete and approximately 41 airwires remain. The 45 × 30 mm outline is also likely too constrained; prior analysis recommended resizing to at least 49 × 33 mm while keeping the bottom ground plane continuous. Once ACUs are available, the next operation should resize/confirm the outline, run placement, route, and finish with DRC verification.
Manual layout steps
Unplaced and airwires
Placement strategy
Check DRC/ERC
Resize board outline
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Vescent-to-Crystek VCO Interface thumbnail
Two-layer analog/RF interface board scaling a Vescent D2-125 servo output to drive the VTUNE input of a Crystek CVCO55CL-0060-0110, with clamps, test access, and controlled-impedance RF output.

Properties

Properties describe core aspects of the project.

Pricing & Availability

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Qty 1

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$5.90–$15.75

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$0.09

HQonline

$1.76

LCSC

$9.48

Mouser

$10.66–$11.04

TME

$2.32

Verical

$3.61–$11.29

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