Part Number: TIDA-060029 Other Parts Discussed in Thread: OPA2810 , THS4551 , OPA301 , OPA300 , ADS127L11 , TMUX1104 , BUF634A , TINA-TI Tool/software: Hi,
In the design, can we use OPA300/301 replace OPA2810? I notice the OPA 300/301 have a 60dB AOL at 100KHz…
Hello Rakesh,
Correction! My mistake:
The input referred offset voltage within the TINA-TI model of this device is in fact 1/2 of what you see at the output or -0.88mV at device input (noise gain = 2 V/V).
Regards,
Hooman
A small addition:
I'm looking at alternatives to the BUF602 and the OPA300 seems promising. It's 150 MHz GBW, unity-gain stable and has output to 100 mV of the rails.
Hello Raghu,
1) The amplifier in figure 4 is being biased at the positive input. In this case, the amplifier isn't being driven to ground. By "true zero" the document is saying that the offset is minimized and the output matches the bias voltage very…
Hi Mickey,
it's very difficut to achieve high gain with single power supply because when doing the biasing lots of the supply noise is injected into the signal path. So, lots of filtering is needed to keep the bias free from noise. In the following I…
I was able to replicate with the TI part OPA300, and I realized that the issue is the capacitance that the op amp is driving through the 10 ohm resistor. If I reduce this capacitance or increase the resistor, the feedback into the negative terminal is…
Other Parts Discussed in Thread: OPA300 , TINA-TI , OPA2330 , OPA330 I'm trying to make a standard half-wave precision rectifier using an OPA300 amp. See the attached image.
When I apply an input voltage of 60Hz, 150mV RMS, the output is fully rectified…
Hello Ken and Seb,
I've put together a spreadsheet of the most promising devices for your review and consideration. This spreadsheet uses your conditions:
Cin= 80pF
Required Bandwidth > 10kHz (I've used 100kHz to allow margin)
Min / Max input…
