Bandgap - Voltage Current References Group Members Bilal...

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Dec-2nd 2005 ECE-453 V oltage & C urrent References Group Members: Bilal Mustafa Khan [BMK33] Rajeev Kumar Dokania [RKD9] Venkata Siva Pulla [VP44]
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Dec-2nd 2005 ECE-453 References- Why? Because, nothing in the world is constant!!!! - The Circuit Performance is a function of environment around it. - We need to minimize the effect of the environment. What Constitutes the environment for a ckt ? - Process - Voltage (Supply) -D.C. Value & A.C. Ripple - Temperature etc.
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Dec-2nd 2005 ECE-453 Control Circuit Input 2 Input 1 References-Use? Vref Vref References can be used to stabilize ANY circuit variables Any Circuit
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Dec-2nd 2005 ECE-453 Vref Common Realization: 1 - Process Variation: OK - Supply Rejection: Poor - Temperature Drift: OK Via Resistor Network
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Dec-2nd 2005 ECE-453 Vref Common Realization: 2 - Process Variation: Not Good - Supply Rejection: Good - Temperature Drift: Not Good Via Zener Diodes
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Dec-2nd 2005 ECE-453 Vref Common Realization: 3 - Process Variation: Not Good - Supply Rejection: Good - Temperature Drift: Not Good Via Diode-Connected MOSFET
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Dec-2nd 2005 ECE-453 Iref Common Realization - Process Variation: Not Good - Supply Rejection: Good - Temperature Drift: Not Good Via Current Mirror
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Dec-2nd 2005 ECE-453 Reference: So what does it Take?
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