The maximum power dissipation of the LM119H is 1.4W, but it can be increased to 2.5W with proper heat sinking.
To ensure stability in the LM119H, it is recommended to use a compensation capacitor (Cc) between pins 1 and 16, and to keep the input and output capacitors (Ci and Co) as close to the device as possible.
The recommended input voltage range for the LM119H is 3.5V to 30V, but it can operate down to 2.7V with reduced performance.
Yes, the LM119H can be used as a voltage regulator, but it is not recommended as it is not designed for that purpose. The LM119H is a high-speed amplifier, and using it as a voltage regulator may compromise its performance and stability.
To reduce noise in the LM119H, use a low-noise power supply, keep the input and output capacitors close to the device, and use a ground plane to minimize electromagnetic interference (EMI).