DragonPalAD724
About the DragonPalAD724 PCB
DragonPalAD724 is an open source PCB design by jimbro1000, published on GitHub. It is a 4-layer board measuring 120 × 46.3 mm, with 64 components from 35 distinct parts.
Other key parts include the 74LS273, MC6847, MC14053, AD724JR and ATF1504ASL-xAx44. By type, the board carries 25 resistors, 18 capacitors, 6 transistors, 5 ICs, 4 connectors and 2 inductors.
From the project
Translation is performed per channel to calculate the relative R-Y and B-Y values that can be combined with an inverted Y signal to produce RGB. Each output channel can then be fine tuned for strength independently.
Translation is performed per channel to calculate the relative R-Y and B-Y values that can be combined with an inverted Y signal to produce RGB. Each output channel can then be fine tuned for strength independently.
The resulting RGB signals are fed to the AD724 which provides signal modulation and synthesizes the sync signals. The original sync in the source luma signal is ignored.
Main components on the DragonPalAD724
DragonPalAD724 bill of materials (BOM)
64 components, 35 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 74LS273 | SOIC-20W_7.5x12.8mm_P1.27mm | IC1 |
| 1 | MC6847 | DIP-40_W15.24mm | IC2 |
| 1 | MC14053 | SOIC-16_3.9x9.9mm_P1.27mm | IC3 |
| 1 | AD724JR | SOIC-16W_7.5x10.3mm_P1.27mm | U1 |
| 1 | ATF1504ASL-xAx44 | TQFP-44_10x10mm_P0.8mm | U3 |
| 1 | MMBT4401 | SOT-23-3 | Q1 |
| 5 | NPN | SOT-23-3 | Q2, Q3, Q4, Q5, Q6 |
| 1 | 4.433620MHz | Crystal_HC18-U_Vertical | Y1 |
| 1 | Video Output | PinHeader_1x05_P2.54mm_Vertical | J1 |
| 1 | Board Interconnect Male | PinHeader_2x11_P2.54mm_Vertical | J2 |
| 1 | JTAG | PinHeader_2x05_P2.54mm_Vertical | J3 |
| 1 | SVid | PinHeader_1x04_P2.54mm_Vertical | J4 |
| 3 | 50K | Potentiometer_Bourns_TC33X_Vertical | RV1, RV2, RV3 |
| 2 | FerriteBead_Small | L_0805_2012Metric_Pad1.15x1.40mm_HandSolder | FB1, FB2 |
| 6 | 10uF | CP_Elec_4x5.4 | C1, C8, C10, C11, C12, C13 |
| 1 | 100uF | CP_Elec_6.3x5.8 | C2 |
| 7 | 0.1uF | C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C4, C7, C16, C17, C18, C19 |
| 3 | 220uF | CP_Elec_4x5.4 | C5, C6, C15 |
| 1 | 51pF | C_0805_2012Metric | C14 |
| 3 | 75R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3 |
Show 15 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 10K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4, R6 |
| 1 | 180R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
| 1 | 910R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 1 | 100R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R9 |
| 4 | 150R | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R10, R11, R12, R13 |
| 1 | 3K3 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R14 |
| 1 | 2K2 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R15 |
| 2 | 2K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R16, R20 |
| 1 | 6K8 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R17 |
| 1 | 4K7 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R18 |
| 1 | 2K7 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R19 |
| 3 | 150R | R_0603_1608Metric | R21, R22, R23 |
| 1 | 12K | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R24 |
| 1 | 8K2 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R25 |
| 1 | 1K8 | R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R26 |
DragonPalAD724 design files
The KiCad project lives in the jimbro1000/DragonPalAD724 repository on GitHub; these links point at the commit this page was built from.
- LayoutDragonYUV.kicad_pcb
- SchematicDragonYUV.kicad_sch
DragonPalAD724: common questions
How big is the DragonPalAD724 PCB?
The DragonPalAD724 measures 120 × 46.3 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the DragonPalAD724?
64 components, from 35 distinct parts. The full bill of materials is listed on this page.
Where can I download the DragonPalAD724 design files?
From the jimbro1000/DragonPalAD724 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the DragonPalAD724 design in my own project?
The repository has no license, so all rights stay with jimbro1000. Use it as a reference, and ask the author before reusing the design.