사양
| 속성 | 가치 |
| Supplier | Silicon Labs |
| Package | Tray |
| ProductStatus | Not For New Designs |
| Type | TxRx Only |
| RFFamily/Standard | General ISM < 1GHz |
| Modulation | FSK, GFSK, OOK |
| Frequency | 283MHz ~ 960MHz |
| DataRate(Max) | 500kbps |
| Power-Output | 13dBm (Max) |
| Sensitivity | -116dBm |
| SerialInterfaces | SPI |
| GPIO | 4 |
| Voltage-Supply | 1.8V ~ 3.6V |
| Current-Receiving | 10mA |
| Current-Transmitting | 18mA ~ 30mA |
| OperatingTemperature | -40°C ~ 85°C |
| MountingType | Surface Mount |
| Package/Case | 20-VFQFN Exposed Pad |
개요
Description
SI4455-B1A-FM is a Silicon Labs RF transceiver IC (Si4455 family) designed for low‑power wireless in ISM/license‑free bands. It integrates the RF front end (PA, LNA, mixer), a programmable frequency synthesizer, and a digital baseband/modem, all controllable via SPI.
Key points:
- Modulation and data: supports common schemes (FSK/GFSK, MSK, GMSK, OOK/ASK), flexible data rates, and built‑in packet handling (CRC, address filtering) with RSSI/readout of link quality.
- Power and interface: low‑power operation with multiple power modes, adjustable TX output power, single‑supply operation, and a simple SPI interface with GPIOs.
- Packaging/revision: B1A-FM denotes a specific package/revision; check the datasheet for exact band coverage, electrical specs, and recommended applications.
- Applications: remote controls, wireless sensors, meters, home/industrial IoT, and other low‑power wireless links.
For exact RF bands, power, and feature support, consult the SI4455‑B1A‑FM datasheet and programming guide.
Key points:
- Modulation and data: supports common schemes (FSK/GFSK, MSK, GMSK, OOK/ASK), flexible data rates, and built‑in packet handling (CRC, address filtering) with RSSI/readout of link quality.
- Power and interface: low‑power operation with multiple power modes, adjustable TX output power, single‑supply operation, and a simple SPI interface with GPIOs.
- Packaging/revision: B1A-FM denotes a specific package/revision; check the datasheet for exact band coverage, electrical specs, and recommended applications.
- Applications: remote controls, wireless sensors, meters, home/industrial IoT, and other low‑power wireless links.
For exact RF bands, power, and feature support, consult the SI4455‑B1A‑FM datasheet and programming guide.
Features
Here are the key features of the SI4455-B1A-FM (Si4455 family):
- Sub-GHz RF transceiver for ISM bands with integrated PLL/VCO
- Modulation: FSK/GFSK, and OOK/ASK
- Data rate: up to several hundred kbps
- Programmable TX output power (high efficiency, up to ~+20 dBm)
- Receiver sensitivity in the wide range of tens of dBm below 0 dBm (typical around -110 to -120 dBm)
- Integrated RF frontend, RSSI, AFC, and channel filtering
- Universal 1.8–3.6 V supply; low-power operation with configurable power-saving modes
- SPI control interface with multiple GPIOs/DIOs and interrupt support
- Small footprint packaging suitable for embedded systems (FM/B1A variants)
- Suitable for remote controls, sensors, metering, and other sub-GHz wireless applications
Note: exact frequency coverage, data rate, and TX power depend on the chosen band and external components; consult the datasheet for precise numbers for your configuration.
- Sub-GHz RF transceiver for ISM bands with integrated PLL/VCO
- Modulation: FSK/GFSK, and OOK/ASK
- Data rate: up to several hundred kbps
- Programmable TX output power (high efficiency, up to ~+20 dBm)
- Receiver sensitivity in the wide range of tens of dBm below 0 dBm (typical around -110 to -120 dBm)
- Integrated RF frontend, RSSI, AFC, and channel filtering
- Universal 1.8–3.6 V supply; low-power operation with configurable power-saving modes
- SPI control interface with multiple GPIOs/DIOs and interrupt support
- Small footprint packaging suitable for embedded systems (FM/B1A variants)
- Suitable for remote controls, sensors, metering, and other sub-GHz wireless applications
Note: exact frequency coverage, data rate, and TX power depend on the chosen band and external components; consult the datasheet for precise numbers for your configuration.
Pinout
Pin count: 20 pins in a 4x4 mm QFN package (SI4455-B1A-FM).
Function: EZRadioPro sub‑GHz RF transceiver. Pins include RF_P/RF_N for the RF front end, power (VDD/GND), SPI control lines (SI, SO, SCLK, NSEL), Shutdown (SDN), four GPIOs (GPIO0–GPIO3) and event/interrupt lines (GDO/NIRQ).
Function: EZRadioPro sub‑GHz RF transceiver. Pins include RF_P/RF_N for the RF front end, power (VDD/GND), SPI control lines (SI, SO, SCLK, NSEL), Shutdown (SDN), four GPIOs (GPIO0–GPIO3) and event/interrupt lines (GDO/NIRQ).
Manufacturer
- Manufacturer: Silicon Laboratories, Inc. (Silicon Labs).
- What kind of company: A fabless semiconductor company that designs and markets silicon, software, and solutions for IoT, including RF transceivers, wireless MCUs, timing products, and related ICs.
- What kind of company: A fabless semiconductor company that designs and markets silicon, software, and solutions for IoT, including RF transceivers, wireless MCUs, timing products, and related ICs.
Application
SI4455-B1A-FM is a low-power, highly integrated transceiver for sub-GHz ISM bands (roughly 240–960/300–928 MHz). Common application areas include:
- Home/building automation (sensors, actuators, remote controls)
- Industrial automation and process telemetry
- Smart metering and utility telemetry
- Asset tracking, inventory management, and logistics
- Remote monitoring and data acquisition (environmental, HVAC)
- IoT sensor networks and gateways
These use cases leverage its long-range, low-power wireless links in the ISM bands.
- Home/building automation (sensors, actuators, remote controls)
- Industrial automation and process telemetry
- Smart metering and utility telemetry
- Asset tracking, inventory management, and logistics
- Remote monitoring and data acquisition (environmental, HVAC)
- IoT sensor networks and gateways
These use cases leverage its long-range, low-power wireless links in the ISM bands.
Package
QFN (Quad Flat No-Lead) package, typically a 20‑pin 4×4 mm QFN.
