| Parameters | 
                                
                                                                                                            
                                            | Serial Interfaces | 
                                            I2C, JTAG, SPI, UART | 
                                        
                                                                            
                                            | Current - Receiving | 
                                            15mA | 
                                        
                                                                            
                                            | Current - Transmitting | 
                                            21mA | 
                                        
                                                                            
                                            | Modulation | 
                                            8DPSK, DQPSK, GFSK | 
                                        
                                                                            
                                            | GPIO | 
                                            22 | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            0.6mm | 
                                        
                                                                            
                                            | Length | 
                                            3.56mm | 
                                        
                                                                            
                                            | Width | 
                                            3.315mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            61-UFBGA, WLCSP | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Operating Temperature | 
                                            -40°C~85°C | 
                                        
                                                                            
                                            | Packaging | 
                                            Tape & Reel (TR) | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            1 (Unlimited) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            61 | 
                                        
                                                                            
                                            | Type | 
                                            TxRx + MCU | 
                                        
                                                                            
                                            | HTS Code | 
                                            8542.39.00.01 | 
                                        
                                                                            
                                            | Subcategory | 
                                            Other Telecom ICs | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            1.65V~1.95V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            BOTTOM | 
                                        
                                                                            
                                            | Terminal Form | 
                                            BALL | 
                                        
                                                                            
                                            | Peak Reflow Temperature (Cel) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Number of Functions | 
                                            1 | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            1.8V | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            0.4mm | 
                                        
                                                                            
                                            | Frequency | 
                                            65.9MHz~108MHz 2.4GHz | 
                                        
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 
                                            NOT SPECIFIED | 
                                        
                                                                            
                                            | Base Part Number | 
                                            STLC26 | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            R-PBGA-B61 | 
                                        
                                                                            
                                            | Qualification Status | 
                                            Not Qualified | 
                                        
                                                                            
                                            | Power Supplies | 
                                            1.8V | 
                                        
                                                                            
                                            | Protocol | 
                                            Bluetooth v3.0, FM Radio | 
                                        
                                                                            
                                            | Power - Output | 
                                            10dBm | 
                                        
                                                                            
                                            | RF Family/Standard | 
                                            Bluetooth, VHF | 
                                        
                                                                            
                                            | Sensitivity | 
                                            -91dBm | 
                                        
                                                                            
                                            | Data Rate (Max) | 
                                            3Mbps | 
                                        
                                                                                                    
                            
                         
                                                STLC2690WTR Overview
The 61-UFBGA, WLCSP package saves space on the board. RF transceiver's mounting is done by using Surface Mount.In this case, the result is a TxRx + MCU with transceiver RF's  high efficiency.High reliability is achieved by using advanced transceiver RF' packagings Tape & Reel (TR).Look for transceiver variants by searching with STLC26.The frequency of 65.9MHz~108MHz 2.4GHz determines how RF transceiver operates .
STLC2690WTR Features
61-UFBGA, WLCSP package
Surface Mount for mounting
TxRx + MCU 
 Tape & Reel (TR) is used
Use STLC26
STLC2690WTR Applications
There are a lot of STMicroelectronics STLC2690WTR RF Transceiver ICs applications. 
- Power Amplifier (PA)
 - Receive
 - Security Systems
 - Home and Security
 - Location and Asset Tracking
 - Fitness
 - Consumer Electronics
 - Remote Control
 - Chemical Sensors
 - Patient Asset Tracking