The maximum power dissipation of the INA2126E/250 is 1.4W, which is calculated based on the maximum junction temperature (TJ) of 150°C and the thermal resistance (RθJA) of 125°C/W.
To optimize the layout, keep the input and output traces as short as possible, use a solid ground plane, and avoid running sensitive traces near the power supply or other noisy signals. Also, use a common-mode filter capacitor (e.g., 10nF) between the input pins and the ground plane to reduce common-mode noise.
The recommended input impedance for the INA2126E/250 is in the range of 1kΩ to 10kΩ. This ensures that the input voltage is properly divided and the amplifier operates within its specified common-mode range.
Yes, the INA2126E/250 can be used as a single-ended amplifier by tying the negative input to ground and using the positive input as the signal input. However, this configuration may compromise the amplifier's common-mode rejection ratio (CMRR) and noise performance.
The gain of the INA2126E/250 can be calculated using the formula: Gain = (Rf / Rg) x (1 + (Rb / Ra)), where Rf is the feedback resistor, Rg is the gain resistor, Rb is the bias resistor, and Ra is the input resistor.
INA2126E/250 datasheet
by Texas Instruments
