1. Absolute Maximum Ratings

️· Purpose: These are stress limits *not* operating conditions. Going beyond these can damage the chip.
️· ESD Warning: The chip is ESD sensitive. Handle with precautions.
️· Moisture Sensitivity Levels: MSL levels and storage conditions are provided for proper handling during assembly.
️· Pin Voltage Limits:
- AVDD (Analogue Supply): -0.3V to +7V
- DVDD1/DVDD2 (Digital Supplies): -0.3V to +7V
- DGND (Digital Ground): -0.3V to +0.3V
- AGND1/AGND2 (Analogue Grounds): -0.3V to +0.3V
- Digital Inputs/Outputs: -0.3V to (DVDD2 + 0.3V)
- Analogue Inputs: -0.3V to (AVDD + 0.3V)
- Other Pins: -0.3V to (AVDD + 0.3V)
️· Temperature Range: 0°C to +70°C (operating), -65°C to +150°C (storage after soldering)

2. Recommended Operating Conditions

️· Operating Temperature: 0°C to +70°C
️· Analogue Supply (AVDD): 4.75V to 5.25V (typical 5.0V)
️· Digital Core Supply (DVDD1): 4.75V to 5.25V (typical 5.0V)
️· Digital I/O Supply (DVDD2): Can be either:
- 4.75V to 5.25V (typical 5.0V) - for 5V I/O
- 2.97V to 3.63V (typical 3.3V) - for 3.3V I/O

3. Thermal Performance

️· Thermal Resistance (Junction to Case - RθJC): 23.9 °C/W (on a 4-layer FR4 board)
️· Thermal Resistance (Junction to Ambient - RθJA): 67.1 °C/W (on a 4-layer FR4 board)

Summary of Supply Voltages

️· Analogue Supply (AVDD): 5.0V is typical, but a range of 4.75V - 5.25V is acceptable.
️· Digital Core Supply (DVDD1): 5.0V is typical, 4.75V - 5.25V range is acceptable.
️· Digital I/O Supply (DVDD2): This is flexible:
- Can operate at 5.0V (4.75V - 5.25V range) for 5V digital I/O.
- *Or* can operate at 3.3V (2.97V - 3.63V range) for 3.3V digital I/O.
️· Crucially: The datasheet emphasizes that AGND1, AGND2 and DGND should be at the *same* potential.