| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            6 Weeks | 
                                        
                                                                            
                                            | Package / Case | 
                                            20-UFQFN Exposed Pad | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Number of Pins | 
                                            20 | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -20°C~85°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Published | 
                                            1997 | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            3 (168 Hours) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            20 | 
                                        
                                                                            
                                            | ECCN Code | 
                                            EAR99 | 
                                        
                                                                            
                                            | Applications | 
                                            General Purpose | 
                                        
                                                                            
                                            | HTS Code | 
                                            8542.39.00.01 | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            2.7V~5.5V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            QUAD | 
                                        
                                                                            
                                            | Terminal Form | 
                                            NO LEAD | 
                                        
                                                                            
                                            | Frequency | 
                                            520kHz~1.71MHz 64MHz~108MHz | 
                                        
                                                                            
                                            | Pin Count | 
                                            20 | 
                                        
                                                                            
                                            | Qualification Status | 
                                            Not Qualified | 
                                        
                                                                            
                                            | Data Interface | 
                                            PCB, Surface Mount | 
                                        
                                                                            
                                            | Consumer IC Type | 
                                            AUDIO SINGLE CHIP RECEIVER | 
                                        
                                                                            
                                            | Modulation or Protocol | 
                                            AM, FM, RDS | 
                                        
                                                                            
                                            | Antenna Connector | 
                                            PCB, Surface Mount | 
                                        
                                                                            
                                            | RoHS Status | 
                                            RoHS Compliant | 
                                        
                                                                                                    
                            
                         
                                                SI4731-D50-GMR Overview
Located in package 20-UFQFN Exposed Pad, RF transmitter and receiver can be found there.Tape & Reel (TR) is the way in which RF transmitter and receiver is package.In this RF Receiver, the supply voltage is 2.7V~5.5V.Mostly, it is used in General Purpose.QUAD is the position of RF transmitter and receiver's  terminals on the board.It is highly efficient when it works at a frequency of 520kHz~1.71MHz 64MHz~108MHz.As a result of its termination, RF Receiver has a total of 20.
SI4731-D50-GMR Features
20-UFQFN Exposed Pad package
520kHz~1.71MHz 64MHz~108MHz
20 terminations
SI4731-D50-GMR Applications
There are a lot of Silicon Labs SI4731-D50-GMR RF Receivers applications. 
- Cellular infrastructure
 - Test Equipment
 - Networking Software
 - Radio Transceiver
 - Satellites
 - TD-SCDMA
 - Automated test equipment
 - Rectifiers
 - Microwave radios
 - Optical transmission devices