This project includes building a complete mmWave radar that could operate at 60GHz. It uses the Texas Instruments IWRL6432 as the radar IC. This radar IC is operable between 57GHz-64GHz. The main goal of this project is to make a small module to use this IC as a radar. The board is a 6 layer board(4 layer was possible but 6 layers was cheaper). The 6 layer board costs only $2.
Schematic:
PCB:
3d:
because the top sides contains BGA footprint which i've never soldered before, i am doing PCBA services for the top side and i will assemble the bottom side by myself
| ITEM | COST | NOTE |
|---|---|---|
| PCB | 2 | 6-Layer PCB |
| PCBA | 51.71 | PCBA service from jlcpcb.com |
| SHIPPING from JLC | 9.28 | shipping cost |
| PCBA discount | -15 | 15 USD coupon from JLCONE yayy(valid till 19 sept) |
| LCSC Total (BOM_PCB_Bottom) | 14.55 | bottom side all parts |
| Total | 62.54 | USD |
| Designator | Designation | Footprint | Price | Quantity(for 2 PCBA) | Amount(USD) | JLCPCB Part Number |
|---|---|---|---|---|---|---|
| C1, C2 | 15p | 402 | 0.001 | 4 | 0.004 | C1548 |
| C6, C8, C10, C12, C14 | 2u2 | 603 | 0.006 | 10 | 0.06 | C23630 |
| C5, C11, C13, C18, C19, C25, C7, C9 | 10u | 603 | 0.056 | 16 | 0.896 | C19702 |
| R2, R3 | 100k | 402 | 0.001 | 2 | 0.002 | C25741 |
| R4, R5, R6 | 10k | 402 | 0.001 | 3 | 0.003 | C25744 |
| U1 | IWRL6432BDBAAMFR | BGA-102_L6.5-W6.5-P0.50-TL_TI_IWRL6432 | 16.0095 | 2 | 32.019 | C22428198 |
| U2 | W25Q128JVS | SOIC-8_5.3x5.3mm_P1.27mm | 1.131 | 2 | 2.262 | C97521 |
| U3 | AMS1117-3.3 | SOT-223-3_TabPin2 | 0.1615 | 2 | 0.323 | C6186 |
| Total | 35.569 | |||||
| PCB Cost | 2 | USD | ||||
| Economic PCBA price | 51.71 | USD | ||||
| Total | 53.71 | USD |
if DNO is yes, i am not ordering the respective parts and cost has not been added to BOM.
| Designator | Designation | Footprint | DNO - Do not order | MOQ | Price | Quantity | Amount(USD) | Supplier link |
|---|---|---|---|---|---|---|---|---|
| C3, C20, C22, C23, C24 | 10u | 603 | No | Yes | 0.0197 | 20 | 0.394 | https://www.lcsc.com/product-detail/C7393892.html |
| C4, C21 | 2u2 | 603 | No | Yes | 0.0228 | 20 | 0.456 | https://www.lcsc.com/product-detail/C48579298.html |
| C15 | 47n | 402 | Yes | - | 0 | 1 | 0 | https://www.lcsc.com/product-detail/C5142571.html |
| C16, C17 | 1u | 603 | No | Yes | 0.0056 | 50 | 0.28 | https://www.lcsc.com/product-detail/C29936.html |
| L1 | 470n | 805 | No | Yes | 0.098 | 5 | 0.49 | https://www.lcsc.com/product-detail/C45385171.html |
| L2 | 100n | 805 | No | Yes | 0.098 | 5 | 0.49 | https://www.lcsc.com/product-detail/C45385168.html |
| R1 | 10k | 402 | Yes | - | 0 | 1 | 0 | https://www.lcsc.com/product-detail/C3020235.html |
| R7 | 100k | 402 | No | Yes | 0.0277 | 20 | 0.554 | https://www.lcsc.com/product-detail/C313329.html |
| R8 | 18k | 402 | No | Yes | 0.005 | 10 | 0.05 | https://www.lcsc.com/product-detail/C2759512.html |
| U4 | TPS628502QDRLRQ1 | SOT-583-8_L2.1-W1.2-P0.50-LS1.6-BR | No | No | 1.94 | 3 | 5.82 | https://www.lcsc.com/product-detail/C3193229.html |
| Y1 | 40MHz Crystal | Crystal_SMD_3225-4Pin_3.2x2.5mm | No | Yes | 5 | 0.1679 | 0.8395 | https://www.lcsc.com/product-detail/C18221410.html |
| J1 | Connector_02x08 | connector_pin2.54mm | No | Yes | 5 | 0.0586 | 0.293 | https://www.lcsc.com/product-detail/C42431811.html |
| Merchandise total: | 7.88 | USD | ||||||
| Shipping | 3.77 | USD | ||||||
| Handling charges | 3 | USD | ||||||
| Discount | -0.1 | USD | ||||||
| Total | 14.55 | USD |