Hi Guys - You all were awesome in helping me understand the difference between AGND and DGN in my recent post on the MAX541 DAC here and I got that working well.
As mentioned at the end of that thread, I need to amplify the DAC's output signal to a reasonable line level. When I hookup the output of the MAX541 DAC to a 3.5mm jack, and then connect that to typical computer speakers, the output is clearly quieter than from a typical consumer device like my phone or laptop.
I have this logic analyzer that also will analyze analog signals. As shown below, I'm reading a max peak-to-peak output from the DAC of about 0.12 volts:
I purchased a MAX492 amplifier chip in hopes to use it to amplify the DAC output to a normal line level. Datasheet here.
I have it configured exactly as shown in the "typical operating circuit" from the datasheet (but not using IN2+/- and OUT2 since I only have a single input signal):
This appears to boost the signal to 0.23 volts:
But I really need to boost it a good bit higher. A Google search tells me typical headphone jack outputs are around +/- 2.0 volts.
I've read through the MAX492 datasheet and it's not clear to me what I can do to increase the amplification. Any help would be most appreciated. Thank you.
As mentioned at the end of that thread, I need to amplify the DAC's output signal to a reasonable line level. When I hookup the output of the MAX541 DAC to a 3.5mm jack, and then connect that to typical computer speakers, the output is clearly quieter than from a typical consumer device like my phone or laptop.
I have this logic analyzer that also will analyze analog signals. As shown below, I'm reading a max peak-to-peak output from the DAC of about 0.12 volts:
I purchased a MAX492 amplifier chip in hopes to use it to amplify the DAC output to a normal line level. Datasheet here.
I have it configured exactly as shown in the "typical operating circuit" from the datasheet (but not using IN2+/- and OUT2 since I only have a single input signal):
This appears to boost the signal to 0.23 volts:
But I really need to boost it a good bit higher. A Google search tells me typical headphone jack outputs are around +/- 2.0 volts.
I've read through the MAX492 datasheet and it's not clear to me what I can do to increase the amplification. Any help would be most appreciated. Thank you.
Answering my own question: I was not aware of how non-inverting op amps work. This helped: Op Amp Gain Calculator