1. General Information & Part Numbers:

️· These specifications apply to the MCP621/1S/2/3/4/5/9 operational amplifiers.
️· The data sheets refer to figures 1-1 and 1-2, which are likely circuit diagrams or test setups, but not provided in your text.
️· VDD is the supply voltage, ranging from 2.5V to 5.5V.
️· VSS is ground.
️· VOUT is the output voltage.
️· VL is the low-level input voltage.
️· CAL/CS is a control signal with specific logic levels.

2. Digital Electrical Specifications (CAL/CS Control)

️· CAL/CS Logic Levels:
- VIL (CAL/CS Low Logic Threshold): Between VSS (ground) and 0.2VDD.
- VIH (CAL/CS High Logic Threshold): Between 0.8VDD and VDD.
️· Input Currents:
- ICSL (CAL/CS Low Input Current): Near zero.
- ICSH (CAL/CS High Input Current): Around 0.7µA.
️· Ground Currents (ISS): This measures current drawn from ground under different conditions:
- Single amplifier, CAL/CS = VDD: -3.5 to -1.8µA (at 2.5V) and -8 to -4 µA (at 5.5V).
- Dual amplifier, CAL/CS = VDD: -5 to -2.5µA (at 2.5V) and -10 to -5µA (at 5.5V).
️· CAL/CS Internal Pull-Down Resistor (RPD): Approximately 5 MΩ.
️· Amplifier Output Leakage (IO(LEAK)): Around 50 nA at 125°C when the CAL/CS is high.
️· POR Dynamic Specifications Time of Amplifier Off and On
️· CAL/CS Dynamic Specifications CAL/CS Setup Time and High Time to Amplifier Off.

3. AC Electrical Specifications

️· Step Response:
- Rise Time (10% to 90%): Approximately 13 ns.
- Slew Rate: Around 10 V/µs.
️· Distortion:
- Total Harmonic Distortion plus Noise (THD+N): 0.0018% at G=1, 2VP-P output, 1kHz frequency, 5.5V supply, 80kHz bandwidth.
️· Noise:
- Input Noise Voltage: 20 µVP-P (0.1 Hz to 10 Hz).
- Input Noise Voltage Density: 13 nV/√Hz (1 MHz).
- Input Noise Current Density: 4 fA/√Hz (1 kHz).
️· AC Specifications: Amplifier Output Leakage, POR Dynamic Specifications, and CAL/CS Dynamic Specifications.

Key Takeaways and Important Notes:

️· CAL/CS Control: The CAL/CS signal is critical for operation; its timing (setup time) is important. It controls calibration and potentially other functions.
️· Power Supply Sensitivity: The ground currents (ISS) are dependent on the supply voltage.
️· Distortion and Noise: The THD+N is relatively low, indicating good linearity.
️· Response Time: The rise time and slew rate demonstrate the amplifier's speed.
️· Leakage Current: The output leakage current is important to consider in some applications.