Hauj lwm lawm
Xa kev nug
Technical Specifications
|
Specification |
Tus nqi |
|
Hom |
RF transceiver module |
|
Muaj nuj nqi |
TRx (xa & txais) |
|
Modulation |
2(G) FSK / MSK / OOK |
|
Cov ntaub ntawv tus nqi |
Mus txog 300 Kbps |
|
Ntau zaus |
315 / 433 / 868 / 915 MHz |
|
Txais rhiab heev |
-120 dBm |
|
Xa lub zog |
+20 dBm |
|
Qhov ntev |
16 × 16 × 1.9 hli |
|
Interface |
SPI |
|
Ua raws |
RoHS / REACH |
Daim ntawv thov teb
- Tsis siv neeg ntsuas ntsuas (AMR): Kev ntsuas hluav taws xob siv hluav taws xob thiab khaws cov ntaub ntawv nyob deb.
- Wireless sensor tes hauj lwm: Environmental monitoring, asset tracking.
- Chaw nyob thiab lub tsev automation: Access control, HVAC, teeb pom kev zoo.
- Kev ruaj ntseg thiab tswb: Intrusion tswb, perimeter sensors.
- Kev saib xyuas thiab tswj kev lag luam: tshuab telemetry, chaw taws teeb tswj txuas.
- Wireless M-BUS: Sub-1GHz metering kev sib txuas lus pawg.
Vim li cas thiaj haum
- Kev npaj ntev ntev: +20 dBm tso zis txhawb nqa txuas ntxiv thiab nkag mus.
- Siab rhiab heev: ruaj khov txais tos rau qis-SNR txuas thiab ntom RF ib puag ncig.
- Kev hloov pauv hloov tau yooj yim: Kev sib cuam tshuam ntawm cov cuab yeej cuab tam thiab cov tshuab niaj hnub.
- Compact SMT hneev taw: Tsawg PCB cheeb tsam rau nruj enclosures.
PCB / PCBA Integration Kev taw qhia
1. SMT kev npaj: SPI interface thiab SMT pob txhawb nqa automated pick-and-place thiab standard reflow profiles.
2. Kav hlau txais xov thiab RF txoj kev:
- Qhov chaw: Khaws ib thaj chaw huv RF; khaws cov kav hlau txais xov / pub kom deb ntawm cov suab nrov digital thiab hloov khoom siv.
- Kev tswj hwm impedance: Khaws qhov sib txuam impedance ntawm kav hlau txais xov mus rau RF pins; minimize stubs thiab ntse khoov.
- Lub tswv yim hauv av: Siv lub dav hlau hauv av stitched; khaws cia hauv av hauv cheeb tsam kav hlau txais xov.
3. Lub zog ruaj khov:
- Decoupling: Muab low-ESR bypass capacitors ze rau VCC/GND pins.
- TX tawg: Xyuas kom lub 315-915 MHz rail tseem nyob ruaj khov nyob rau hauv +20 dBm kis bursts.
4. Testability & DFM:
- Cov ntsiab lus nkag: Muab cov ntaub qhwv rau SPI, TRx cov ntaub ntawv, thiab cov hlua hluav taws xob los ua kom yooj yim ICT/AOI.
- Silks & fiducials: Cov cim qhia meej meej txhim kho qhov tseeb ntawm qhov chaw thiab tawm los.
5. BOM simplification:
- Sab nraud qhov chaw: Tsuas yog qhov tseem ceeb passive rau kev sib piv / decoupling; txo kev sib dhos nyuaj thiab nqi.
Cim npe nrov: rfm69hc-st, Tuam Tshoj rfm69hc-st manufacturers, lwm tus neeg, Hoobkas
