component
SI4463-B1B-FMR
Public Made by Adomby adom
SKYWORKS SILICON LABS RF Transceiver ICs, QFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 7d ago |
| viewers | 7d ago |
| package.json | 7d ago |
| page.json | 7d ago |
| README.md | 7d ago |
| si4463-b1b-fmr-etched.glb | 7d ago |
| si4463-b1b-fmr-etched.step | 7d ago |
| si4463-b1b-fmr-hero.glb | 7d ago |
| si4463-b1b-fmr-hero.overlay.json | 7d ago |
| si4463-b1b-fmr.glb | 7d ago |
| si4463-b1b-fmr.kicad_mod | 7d ago |
| si4463-b1b-fmr.kicad_sym | 7d ago |
| si4463-b1b-fmr.lbr | 7d ago |
| si4463-b1b-fmr.step | 7d ago |
SI4463-B1B-FMR
SKYWORKS SILICON LABS · RF Transceiver ICs · QFN-20-EP(4x4)
SI4463-B1B-FMR from SKYWORKS SILICON LABS, in a QFN-20-EP(4x4). Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | SDN | input | Shutdown input (0 to VDD V digital); SDN must be 0 in all modes except Shutdown, and when SDN = 1 the chip is completely shut down and register contents are lost. |
| 2 | RXp | input | Differential RF input pin of the LNA; see the application schematic for the example matching network. |
| 3 | RXn | input | Differential RF input pin of the LNA; see the application schematic for the example matching network. |
| 4 | TX | output | Transmit output pin; the PA output is an open-drain connection, so the L-C match must supply VDD (+3.3 VDC nominal) to this pin. |
| 5 | NC | unconnected | No connect; not connected internally to any circuitry. |
| 6 | VDD | power_in | Supply voltage input to internal regulators, +1.8 to +3.6 V; recommended supply voltage is +3.3 V. |
| 7 | TXRAMP | output | Programmable bias output with ramp capability for an external FET PA; see section 5.4 Transmitter (TX). |
| 8 | VDD | power_in | Supply voltage input to internal regulators, +1.8 to +3.6 V; recommended supply voltage is +3.3 V. |
| 9 | GPIO0 | bidirectional | General purpose digital I/O configurable for functions such as microcontroller clock output, FIFO status, POR, wake-up timer, low battery detect, TRSW and antenna diversity control; GPIO pins can source up to 5 mA. |
| 10 | GPIO1 | bidirectional | General purpose digital I/O configurable for functions such as microcontroller clock output, FIFO status, POR, wake-up timer, low battery detect, TRSW and antenna diversity control; GPIO pins can source up to 5 mA. |
| 11 | nIRQ | output | General microcontroller interrupt status output, set low when an interrupt event occurs; no external pull-up is required but one may be desirable if multiple interrupt lines are connected. |
| 12 | SCLK | input | Serial clock input for the 4-line serial bus, 0 to VDD V digital input; data is clocked in on positive edge transitions. |
| 13 | SDO | output | Serial data readback output of the internal control registers, 0 to VDD V digital output. |
| 14 | SDI | input | Serial data input for the 4-line serial bus, 0 to VDD V digital input. |
| 15 | nSEL | input | Serial interface select (enable) input for the 4-line serial bus, 0 to VDD V digital input. |
| 16 | XOUT | output | Crystal oscillator output; connect to an external 25 to 32 MHz crystal, or leave floating when driving XIN from an external source. |
| 17 | XIN | input | Crystal oscillator input; connect to an external 25 to 32 MHz crystal or to an external source. |
| 18 | GND | power_in | Connect to PCB ground. |
| 19 | GPIO2 | bidirectional | General purpose digital I/O configurable for functions such as microcontroller clock output, FIFO status, POR, wake-up timer, low battery detect, TRSW and antenna diversity control; GPIO pins can source up to 5 mA. |
| 20 | GPIO3 | bidirectional | General purpose digital I/O configurable for functions such as microcontroller clock output, FIFO status, POR, wake-up timer, low battery detect, TRSW and antenna diversity control; GPIO pins can source up to 5 mA. |
| 21 | PADDLE_GND | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | SKYWORKS SILICON LABS |
| Package | QFN-20-EP(4x4) |
| Category | RF And Wireless |
| Pins | 21 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Supply Voltage Range | VDD | 1.8 | 3.3 | 3.6 | V | 4 | |
| Synthesizer Frequency Range (Si4463/61/60) | FSYN | 850 | 1050 | MHz | 850-1050 MHz band | 5 | |
| Synthesizer Frequency Range (Si4463/61/60) | FSYN | 420 | 525 | MHz | 420-525 MHz band | 5 | |
| Synthesizer Frequency Range (Si4463/61/60) | FSYN | 284 | 350 | MHz | 284-350 MHz band | 5 | |
| Synthesizer Frequency Range (Si4463/61/60) | FSYN | 142 | 175 | MHz | 142-175 MHz band | 5 | |
| RX Frequency Range (Si4463/61/60) | FRX | 850 | 1050 | MHz | 850-1050 MHz band | 6 | |
| RX Frequency Range (Si4463/61/60) | FRX | 420 | 525 | MHz | 420-525 MHz band | 6 | |
| RX Frequency Range (Si4463/61/60) | FRX | 284 | 350 | MHz | 284-350 MHz band | 6 | |
| RX Frequency Range (Si4463/61/60) | FRX | 142 | 175 | MHz | 142-175 MHz band | 6 | |
| RX Channel Bandwidth | BW | 1.1 | 850 | kHz | 7 | ||
| BER Variation vs Power Level | PRX_RES | 0 | 0.1 | ppm | Up to +5 dBm Input Level | 7 | |
| TX Frequency Range (Si4463/61/60) | FTX | 850 | 1050 | MHz | 850-1050 MHz band | 9 | |
| TX Frequency Range (Si4463/61/60) | FTX | 420 | 525 | MHz | 420-525 MHz band | 9 | |
| TX Frequency Range (Si4463/61/60) | FTX | 284 | 350 | MHz | 284-350 MHz band | 9 | |
| TX Frequency Range (Si4463/61/60) | FTX | 142 | 175 | MHz | 142-175 MHz band | 9 | |
| (G)FSK Data Rate | DRFSK | 0.1 | 500 | kbps | 9 | ||
| 4(G)FSK Data Rate | DR4FSK | 0.2 | 1000 | kbps | 9 | ||
| OOK Data Rate | DROOK | 0.1 | 120 | kbps | 9 | ||
| Output Power Range (Si4464/63) | PTX | -20 | 20 | dBm | 10 | ||
| XTAL Range | XTALRange | 25 | 32 | MHz | Tested using an external clock source (similar to a TCXO) | 11 | |
| POR Reset Time | tPOR | 5 | ms | 11 | |||
| Input Current | IIN | -10 | 10 | µA | 0<VIN<VDD | 12 | |
| Input Current If Pullup is Activated | IINP | 1 | 10 | µA | VIL=0V | 12 | |
| VDD to GND | VDD | -0.3 | 3.6 | V | 13 | ||
| Instantaneous VRF-peak to GND on TX Output Pin | -0.3 | 8 | V | 13 | |||
| Sustained VRF-peak to GND on TX Output Pin | -0.3 | 6.5 | V | 13 | |||
| Voltage on Digital Control Inputs | -0.3 | V | 13 | ||||
| Voltage on Analog Inputs | -0.3 | V | 13 | ||||
| RX Input Power | 10 | dBm | 13 | ||||
| Operating Ambient Temperature Range | TA | -40 | 85 | °C | 13 | ||
| Thermal Impedance | JA | 30 | °C/W | 13 | |||
| Junction Temperature | TJ | 125 | °C | 13 | |||
| Storage Temperature Range | TSTG | -55 | 125 | °C | 13 |
CAD (KiCad official)
- Symbol:
SI4463-B1B-FMR - Footprint:
Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm - 3D model: QFN-20-EP(4x4) (KiCad packages3D, STEP)
- 3D model files:
si4463-b1b-fmr-etched.step/si4463-b1b-fmr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);si4463-b1b-fmr.step/si4463-b1b-fmr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: SKYWORKS SILICON LABS datasheet (56 pp, sha256
bd05260fa3d56abf, retrieved 2026-10-18, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-sonnet-5-5(agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish. - CAD: KiCad official libraries (CC-BY-SA 4.0).