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Analog Electronics Workshop Bandwidth

Analog Electronics Workshop Bandwidth. Rev 0.2 March 13, 2013. Using the Gain Bandwidth Product. Dominant Pole. Gain Bandwidth Constant for 20dB/decade slope. Amplifiers where GBW is Different over Different Frequency ranges. Simulation – Noninverting Gain of 100.

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Analog Electronics Workshop Bandwidth

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  1. Analog Electronics WorkshopBandwidth Rev 0.2 March 13, 2013

  2. Using the Gain Bandwidth Product

  3. Dominant Pole

  4. Gain Bandwidth Constant for 20dB/decade slope

  5. Amplifiers where GBW is Different over Different Frequency ranges

  6. Simulation – Noninverting Gain of 100

  7. Bandwidth Limits Inverting Gain vs Noninverting gain

  8. Bandwidth Lab • Simulation • Calculation • Measurement

  9. Ex 3.1: Hand Calculations 1. Determine the bandwidth for the circuit below. Draw the closed loop gain (in dB) vs. frequency.

  10. Ex 3.1: Slew Rate PCB Schematic U1 is configured as a buffer for these examples. R6 is not installed and R5 is a short. In the top position J1 will connect the scope channel 0 to the output of U1 (as shown). In the bottom connection scope channel 0 is connected to the input signal for U2. U2 is configured in a gain of -34.8. This circuit will be used for bandwidth tests. The myDAQ provides +/-15V dc supplies. The circuit to the left is used to regulate the supplies to +/-2.5V.

  11. Ex 3.2: Instrument Setup Install OPA333 into socket U1 Set jumper J2 to bottom position signal generator and scope to input

  12. Ex 3.1: Instrument Setup The instrument setup above will configure the signal source and scope for the circuit below so that we can see the bandwidth limitations. Use the curser to determine the bandwidth (-3dB).

  13. Ex 3.1: Expected Results Run transient analysis with the Tina circuit called “03-AWE-OPA333-BW.tsc” 1. Use the cursors on the myDAQ and Tina Spice tool to measure the bandwidth.

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