Design a basic BJT diff-amp with an active load and constant currentsource biasing. The bias voltages are to be \(\pm 3 \mathrm{~V}\) and the maximum power dissipation is to be limited to \(2 \mathrm{~mW}\). The open-circuit differential-mode voltage gain should be \(\left|A_{d}\right|=1800\) and the common-mode rejection ratio should be \(\mathrm{CMRR}_{\mathrm{dB}}=75 \mathrm{~dB}\). Specify bias currents, minimum Early voltages, and the minimum output impedance of the current source. Design the current source to achieve the required output impedance.