| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
1,450 pcs
|
1450 pcs | On Request | 1 | On Request | On Request | 1135+ | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Antenna Connector | |
| Applications | |
| Carrier Frequency | |
| Crystal Oscillator Support | |
| Current | |
| Data Interface | |
| Data Rate | |
| Data Rate (Max) | |
| Frequency | |
| Modulation | |
| Modulation or Protocol | |
| Mounting Type | |
| Operating Temperature | |
| Package Dimensions | |
| Sensitivity | |
| Storage Temperature | |
| Supplier Device Package | |
| Supplier Package | |
| Tape & Reel | |
| Voltage | |
| Voltage Regulator | |
| sensitivity (Nominal @ 5 kbps) |
The Si4311 is a fully-integrated FSK CMOS RF receiver from Silicon Laboratories, 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.
Key features include selectable carrier frequencies, FSK modulation support, high sensitivity of -104 dBm at 5 kbps, and data rates up to 10 kbps. The device operates from a 2.7V to 3.6V supply and includes an on-chip low-dropout voltage regulator. It requires only six external components for a complete receiver solution.
The Si4311 is available in a compact 3x3x0.85 mm 20-QFN package, making it ideal for space-constrained designs. It operates within a temperature range of -40°C to +85°C. The receiver integrates an Automatic Frequency Centering (AFC) function and selectable IF bandwidths for enhanced performance.
This receiver is well-suited for applications like satellite set-top box receivers, remote keyless entry systems, wireless point-of-sale devices, and telemetry. Its ease of design and low Bill of Materials (BOM) contribute to its cost-effectiveness.
| Qty | Low | High |
|---|---|---|
| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The operating voltage range is 2.7V to 3.6V.
The SI4311-B21-GMR supports 315 MHz and 434 MHz frequencies.
The maximum data rate supported is 10 kbps.
The sensitivity is -104 dBm at 5 kbps.
The operating temperature range is -40°C to 85°C.
It is supplied in a 20L QFN package with dimensions of 3x3x0.85 mm.