A bipolar differential amplifier as shown in Fig. 7.5 has I EE = 1 mA. The resistor

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A bipolar differential amplifier as shown in Fig. 7.5 has IEE= 1 mA. The resistor values and transistor data are as given in Problem 7.1. If the tail current source has an associated resistanceRT= 300 kΩ and capacitance CT= 2 pF as defined in Fig. 7.11a, calculate the CM and DM gain and CMRR as a function of frequency. Sketch the magnitude of these quantities in decibels from f = 10 kHz to f = 20 MHz, using a log frequency scale. Compare your answer with a SPICE simulation.

Fig. 7.5:

R Ro Cin Vx Vo a,Vx 0+


Fig. 7.11 a:

RL Voc Rs Vic Ст 2 RT

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Analysis and Design of Analog Integrated Circuits

ISBN: 978-0470245996

5th edition

Authors: Paul R. Gray, ‎ Paul J. Hurst Stephen H. Lewis, ‎ Robert G. Meyer

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