| Parameters | 
                                
                                                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            20-VFQFN Exposed Pad | 
                                        
                                                                            
                                            | Number of Pins | 
                                            20 | 
                                        
                                                                            
                                            | Manufacturer Package Identifier | 
                                            SI4464-B1X-FM | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~85°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tube | 
                                        
                                                                            
                                            | Published | 
                                            2011 | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            3 (168 Hours) | 
                                        
                                                                            
                                            | Type | 
                                            TxRx + MCU | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            1.8V~3.6V | 
                                        
                                                                            
                                            | Frequency | 
                                            119MHz~1.05GHz | 
                                        
                                                                            
                                            | Power - Output | 
                                            20dBm Max | 
                                        
                                                                            
                                            | RF Family/Standard | 
                                            General ISM < 1GHz | 
                                        
                                                                            
                                            | Data Rate (Max) | 
                                            1Mbps | 
                                        
                                                                            
                                            | Serial Interfaces | 
                                            SPI | 
                                        
                                                                            
                                            | Current - Receiving | 
                                            10.7mA~13.7mA | 
                                        
                                                                            
                                            | Current - Transmitting | 
                                            70mA~85mA | 
                                        
                                                                            
                                            | Modulation | 
                                            4GFSK, GFSK, GMSK, OOK | 
                                        
                                                                            
                                            | Sensitivity (dBm) | 
                                            -126 dBm | 
                                        
                                                                            
                                            | GPIO | 
                                            4 | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                                                    
                            
                         
                                                SI4464-B1X-FM Overview
To save space on the board, RF transceiver IC has a 20-VFQFN Exposed Pad package. The RF transceiver's mounting method is Surface Mount.As a TxRx + MCU, it has high efficiency and reliability.High reliability is provided by the advanced transceiver RF' packaging Tube.With 20 pins, the transceiver RF circuit board is designed.As a result, RF transceiver operates in accordance wRF transceiverh the frequency of 119MHz~1.05GHz.
SI4464-B1X-FM Features
20-VFQFN Exposed Pad package
Surface Mount for mounting
TxRx + MCU 
 Tube is used
20 pins
SI4464-B1X-FM Applications
There are a lot of Silicon Labs SI4464-B1X-FM RF Transceiver ICs applications. 
- Fitness
 - HVAC
 - Home and Security
 -  
 - Location and Asset Tracking
 - Health care
 - Wireless Price Tags
 - Low Noise Amplifier (LNA)
 - Chemical Sensors
 - Transmit