| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
628 pcs
|
628 pcs | On Request | 1 | On Request | On Request | 13+ | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Antenna Connector | |
| Applications | |
| Current | |
| Data Interface | |
| Data Rate (Max) | |
| Frequency | |
| Modulation or Protocol | |
| Mounting Type | |
| Operating Temperature | |
| Packaging Method | |
| Sensitivity | |
| Supplier Device Package | |
| Supplier Package | |
| Tape & Reel | |
| Voltage |
The Si4311-B21-GM is a fully-integrated FSK CMOS RF receiver from Silicon Labs, designed for unlicensed 315 and 433.92 MHz UHF bands. It is suitable for high-volume, cost-sensitive applications such as remote controls, garage door openers, home automation, and security systems.
This receiver boasts industry-leading RF performance with high integration and flexibility. Key electrical specifications include a selectable carrier frequency of 315/433.92 MHz, support for FSK modulation, and a high sensitivity of -104 dBm at 5 kbps. It can handle data rates up to 10 kbps and operates within a supply voltage range of 2.7V to 3.6V, drawing a current of 20mA.
The device operates across a temperature range of -40°C to +85°C. It is housed in a compact 3x3x0.85 mm 20-QFN package, designed for surface mounting. The integrated low-dropout voltage regulator allows for direct battery operation. No production alignment is necessary as all RF functions are integrated into the device, simplifying the design process and reducing the Bill of Materials (BOM).
Applications include satellite set-top box receivers, remote controls, garage and gate door openers, home automation, security systems, remote keyless entry, after-market alarms, telemetry, and wireless point-of-sale devices.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The SI4311-B21-GM operates at selectable frequencies of 315 MHz and 433.92 MHz.
The operating supply voltage range for the SI4311-B21-GM is 2.7V to 3.6V.
The SI4311-B21-GM supports data rates up to 10 kbps.
The sensitivity of the SI4311-B21-GM is -104 dBm at a data rate of 5 kbps.
The SI4311-B21-GM operates within a temperature range of -40°C to +85°C.
The SI4311-B21-GM supports FSK modulation.
The SI4311-B21-GM is supplied in a 20-QFN (3x3 mm) package.