| Parameters | 
                                                                                                            
                                            | Factory Lead Time | 2 Weeks | 
                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | 48-TQFP | 
                                                                            
                                            | Supplier Device Package | 48-TQFP (7x7) | 
                                                                            
                                            | Operating Temperature | -30°C~85°C | 
                                                                            
                                            | Part Status | Active | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 
                                                                            
                                            | Type | Audio | 
                                                                            
                                            | Data Interface | I2S | 
                                                                            
                                            | Voltage - Supply, Analog | 2.5V~3.6V | 
                                                                            
                                            | Voltage - Supply, Digital | 1.7V~1.85V | 
                                                                            
                                            | Resolution (Bits) | 8 b | 
                                                                            
                                            | Sigma Delta | No | 
                                                                            
                                            | Number of ADCs / DACs | 1 / 1 | 
                                                                            
                                            | RoHS Status | ROHS3 Compliant | 
                                                                                                    
                            
                         
                                                1681 Overview
As a space saver, it comes in the 48-TQFP package. It can perform highly efficiently in various applications since it is a type of Audio. The mounting type is Surface Mount. When the operating performance is set to -30°C~85°C, it is able to operate normally. In addition, it is equipped with 1 / 1 ADCs and DACs. In the analog circuit, the supply voltage is 2.5V~3.6V. A supply voltage of 1.7V~1.85V is applied to the digital circuit. 
1681 Features
Embedded in the 48-TQFP package
Operating temperature of -30°C~85°C
1 / 1 ADCs / DACs
1681 Applications
There are a lot of Adafruit Industries LLC 1681 CODECs Interface ICs applications. 
- High-performance memory-decoding or data-routing applications
- Pulp & paper mills
- Speed synchronization of multiple motors in industries
- War field flying robot with a using night-vision flying camera
- Multi-axis control
- Radiation therapy
- Advanced breast cancer treatments
- Feature extraction
- Position measurement
- Medical & Lab Equipment