The maximum power dissipation of the LM124FKB is dependent on the package type and ambient temperature. For the TO-5 package, the maximum power dissipation is 500mW at 25°C. However, it's recommended to derate the power dissipation by 6mW/°C above 25°C.
While the LM124FKB can be used as a comparator, it's not the most suitable choice. The LM124FKB is an op-amp designed for linear applications, and its output stage is not optimized for high-speed switching. Texas Instruments recommends using a dedicated comparator like the LM339 or LM2901 for comparator applications.
The input impedance of the LM124FKB is typically around 2MΩ, but it can vary depending on the specific application and operating conditions. It's recommended to use an input resistor to match the impedance of the signal source and to reduce noise pickup.
Yes, the LM124FKB can be used in a single-supply configuration, but it requires careful consideration of the input common-mode range and output voltage swing. The LM124FKB can operate from a single supply voltage as low as 5V, but the input common-mode range is limited to within 2V of the supply rails.
The slew rate of the LM124FKB is typically around 0.5V/μs, which is relatively slow compared to modern op-amps. This can limit the LM124FKB's ability to handle high-frequency signals or fast transient responses.
LM124FKB datasheet
by Texas Instruments
