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4. BJT Current Mirror (15) In the Wilder current mirror as shown below, the ratio of BE junction areas of the BJTs is a
Posted: Wed Apr 27, 2022 6:07 pm
by answerhappygod
- 4 Bjt Current Mirror 15 In The Wilder Current Mirror As Shown Below The Ratio Of Be Junction Areas Of The Bjts Is A 1 (43.25 KiB) Viewed 33 times
4. BJT Current Mirror (15) In the Wilder current mirror as shown below, the ratio of BE junction areas of the BJTs is a = A/c = 2. For both BJT, B = 100. The Early voltage is V - 5.0 V for Q3. The current mirror is powered by a 12 V DC voltage source 1) (5) Assume QI has a constant Vusy = 0.7 V. Design Rres so that an love = 1 mA is established as the reference current. (Note: Vhe is not 0.7 V.) 2) (5) Design Re so that the current mirror can provide an output currentl. = 50 pA. 3) (3) Estimate the output resistance of the current mirror R. (looking into the collector of Q2.) 4) (2) What are the main merits of this modified current mirror compared to the conventional BJT current mirror? 12 V Irat I. Rret RO Q1 Q2 RE VE 100