Analog CMOS Integrated Circuit Design Current Mirrors Jawdat
- Slides: 31
Analog CMOS Integrated. Circuit Design Current Mirrors Jawdat Abu-Taha Department of Electrical and Computer Engineering Islamic University of Gaza jtaha@iugaza. edu. ps 1
Applications of Current Sources 2
Simple Resistive Biasing for Current Source 3
Problems • Output current depends on: – Supply – Process – Temperature • What if the bias voltage is independent of supply voltage? • Is there a way of generating reliable currents? 4
Basic Idea Typically we assume that one precisely defined current source is available and other current sources copy their current from this precise source. Iout is a function of gate-source voltage 5
Basic Idea This structure is called current mirror 6
Question • What happens if the two transistors in the basic current mirror have different sizes? 7
Example Assuming all the transistors are in saturation region, find Iout: 8
Current Mirrors: Amplifier Bias Example 9
Current Mirrors: Signal Amplification Example • Find the small signal voltage gain of the following circuit. 11
Effect of Channel Length Modulation 12
Cascode Current Mirror 13
Cascode Current Mirror 15
Cascode Current Mirror SM EECE 488 Set 5 - Current Mirrors 16
Cascode Current Mirror 17
Cascode Current Mirror Biasing 19
Cascode Current Mirror Biasing 20
Current Mirror Biasing 21
Basic Circuit to Generate Supply Independent Current 22
Supply Independent Current 23
Supply Independent Current 25
Start-up Problem 26
Start-up Problem 27
Active Current Mirrors 29
Active Current Mirrors in Differential to Single-Ended Amplifiers 30
Differential to Single-Ended Amplifiers 31
Calculation of Gm 32
Small-Signal Gain 33
Common Mode Characteristics 34
Common Mode 35
Common Mode 36
- Device modeling for analog and rf cmos circuit design
- Razavi cmos analog circuit design
- Cmos inverter vtc
- Vgb
- Synchronous dynamic circuit techniques
- Sr latch cmos circuit
- Analog circuit behavior
- Elisabetta silli
- Cmos inverter using microwind
- Cmos design rules
- For complex gate design in cmos or
- Cmos vlsi design lecture notes
- Line current and phase current
- Line vs phase voltage
- Drift current and diffusion current
- Ac theory 3 lesson 4
- Drift current density unit
- Drift current and diffusion current in semiconductor
- The value of vgs that makes id approximately zero is the
- Delta to wye conversion balanced
- Infineon
- Diffusion current formula
- Arc
- Touch current vs leakage current
- Kcl mesh analysis
- Vhsic
- Spice (simulation program with integrated circuit emphasis)
- Monolithic ic
- Building blocks of integrated-circuit amplifiers
- Simbol simbol kapasitor
- Ic ssi
- Digital integrated circuits