9.111 A BJT differential amplifier, biased to have re = 100 Ω and utilizing two 100-Ω emitter resistors and 5- kΩ loads, drives a second differential stage biased to have re = 50 Ω. All BJTs have β = 100. What is the voltage gain of the first stage? Also find the input resistance of the first stage, and the current gain from the input of the first stage to the collectors of the second stage.
12.5 V/V; 40 kΩ; 3300 A/A