Revisit to Bipolar Analog Circuits: Two Base Current
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Gunma University Kobayashi Lab Revisit to Bipolar Analog Circuits: Two Base Current Compensation Techniques Lei Sha, Minh Tri Tran, Anna Kuwana, Haruo Kobayashi Division of Electronics and Informatics 4th International Conference on Technology and Social Science Dec.3, 2020 Gunma University
Revisit to Bipolar Analog Circuits: Two Base Current
ICTSS20201202Lei Sha, Minh Tri Tran, Anna Kuwana, Haruo
Kobayashi
Division of Electronics and Informatics
4th International Conference on Technology and Social Science
Dec.3, 2020
Gunma University
• Curvature Compensation Circuit in Bandgap Reference Circuit with
Base Current Compensation
• Summary
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Contents
• Curvature Compensation Circuit in Bandgap Reference Circuit with
Base Current Compensation
• Summary
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• Curvature Compensation Circuit in Bandgap Reference Circuit with
Base Current Compensation
• Summary
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β Io
Iin1 Vout1
N=16
β Io
β Io
Bipolar Transistor Current Mirror Circuit with Cascode and Base
Current Compensation Configuration
Vcc(5V)
R1
Vcc
Iin=1.213mA
Iout=1.206mA
Bipolar Transistor Current Mirror Circuit with Cascode, Level-Shift
and Base Current Compensation Configuration
R1
Vcc(5V)
Vcc
-7
-4
-1
2
Bipolar Transistor Current Mirror Circuit with Cascode, Level-Shift
and Base Current Compensation Configuration
Iin
Vcc VccVcc(5V)
R3
R2 R2 R2 R2 0 1 2 3 4 5 -6
-4
-2
Bipolar Transistor Current Mirror Circuit with Cascode, Level-Shift
and Base Current Compensation Configuration
Vcc(5V) Vcc Vcc
R1
R3
R3
R1=3kΩ R2=50Ω R3=8kΩ 0 1 2 3 4 5
-6
-4
-2
Vout(1V) Vout(1V)
• Curvature Compensation Circuit in Bandgap Reference Circuit with
Base Current Compensation
• Summary
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I
I
Bipolar Differential Amplifier with Base Current Compensation and
Simple Active Load
I
Vout Ip Im Im
Q3 Q4 Ip
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Bipolar Differential Amplifier with Base Current Compensation and
the Cascode Active Load
I
Vip
Vout
Bipolar Differential Amplifier with Base Current Compensation and
the Wilson Active Load
Iin+=0 I
Vout Ip Ip Im Im
ImIp Iin-=0 Vim
Vout 3.73uA 3.75uA
• Curvature Compensation Circuit in Bandgap Reference Circuit with
Base Current Compensation
• Summary
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Iin1 R3
Vdd5V
Bandgap Reference
Curvature Compensation Circuit in Bandgap Reference Circuit with
Base Current Compensation
Iin2 =0
• Curvature Compensation Circuit in Bandgap Reference Circuit with
Base Current Compensation
• Summary
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Summary
1. Cascode current mirror with PNP level-shift and base current
compensation technique
• Deviation reduction between input and output currents • Stable
output current under lower output voltage
2. Differential amplifier with Wilson active load and base current
compensation technique
• High input impedance • High gain
3. Curvature compensation circuit with the base current
compensation technique • Dependable and simple curvature
compensation in bandgap reference circuit
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Acknowledgements
We would like to thank Mr. Hiroki Sonoda and Mr. Koichi Yamazaki of
Renesas Electronics Corp. for their valuable comments about bipolar
ICs in industry today
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