Reports until 00:09, Monday 28 October 2024
Electronics General (GQuEST)
Jeffrey Wack - posted 00:09, Monday 28 October 2024 - last comment - 13:10, Tuesday 05 November 2024(11943)
Testing ADH4702 opamp (future piezo driver)

We have two EVAL-ADH4702-1CPZ evaluation boards which are nominally configured as 21V/V gain noninverting amplifiers.

First I provided power with a Newport +-15V supply, connecting +, -, and GND on the power supply to VCC, VEE, and GND respectively, on the eval board.

This resulted in a gain of 12.3dB up to about 100kHz

Next, I used the on board power supply by connecting the DC jack to the +15V and GND of the power supply. I then connected the power supply half of the eval board to the opamp circuit by jumping VCC_TRANSFORMER
to VCC, VEE_ TRANSFORMER to VEE, and GND_TRANSFORMER to AGND, as described in the manual of the eval board in the section "Initial Power-Up." These jumper wires are white, turquiose, and yellow.

I performed a transfer function and a pulse delay measurement.

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Jeffrey Wack - 13:10, Tuesday 05 November 2024 (11965)

Both of these opamp eval boards have been outfitted with pin jumpers. They are being stored in the EE lab in the tall white cabinet on the west wall to the left of the drill press.