Ben,
Shutdown current of OPA357 for Vs=3.3V is around 250nA at 50C (see graph below).
Since you only specified RR swing requirement but no speed, I would suggest you to take a look at OPA341 (see graph below) as well as OPA363, OPA373 and OPA322…
As Tim already stated, the common mode range for the OP07 is exceeded.The output range and VCC are also problems in this circuit.
I suggest the OPA363, OPA364, OPA365, OPA,376 or OPA336. The OPA336 is the lowest cost and has the lowest bias current…
Hi Lucas,
Lucas Hölbling said: Is a load resistor to GND on the output required?
This technique is discussed in the datasheet of OPA364. See figure 24.
In the datasheet of OPA320 the use of a Schottky diode to generate a negative supply voltage…
The attached presentation is where much of the methods for choosing the right R-C and Op Amp to drive a CDAC SAR converter were derived from. Look it over to help understand where the rules of thumb for op amp BW came from.
Let us know after studying…
Hi Peter,
Have noticed similar with EK-TM4C1294-XL launch pad ADC noise is quiet high +vRefA directly tied to +3v3. The odd thing is a good part of the sample noise was coming from +5 feeding +3v3 LDO assume the MCU internal 2v0 LDO.
The launch pad…
All very good advice yet LP at this time ADC channels are open inputs simulating analog rising steps driven by residual AXi input gate E charging (Csh), (Rsw) internal resistor and capacitor. Must point out none of that added motor discussion has to do…
Part Number: ADS8320 Hello Community,
On page 33 of the document attached, there are two equations with respect to a pole and zero being produced. Since this forms an LPF RC filter, the 1/ReqC makes the pole understandable, but I don't understand where…
Part Number: ADS5553 Other Parts Discussed in Thread: TINA-TI , ADS5560 , LMH6552 , Hello
I have an AD5553 ADC. I don't have any anti-aliasing filter so I need to put an first order RC filter at the input of AD5553.
I've studied below document to…
Hello,
Yes, it has to do with the settling time of the sampling cap. You need to have enough time to allow it to settle so that it has 12 bit accuracy. If you add a large external cap and resistor then that RC combination will also have a long settling…
