Part Number: ADS127L11 Other Parts Discussed in Thread: PGA280 , , THS4551 , OPA187 , INA821 , INA828 , TINA-TI Good Day,
I've got a product about to go to production using the new ADS127L11 24 bit ADC with a PGA280 in front of it for signal gain. For…
Hi Ethan，
thanks for your reply so quickly，i know there are many way to get the negative voltage，but most of the means is used ref50XX and one Operator amplifier，But for my design，I think the OPA735 is suit for my design. So i want to know is there…
Hi Archie,
ArTzy said: what kind of test circuit is TI using for their Input offset voltage measurements depending on the Common mode voltage of the Op amp.
The image below is twi standard Vos test methods in ATE implementation. There are other variations…
Steve,
DC PSRR+ is 160 dB while DC CMRR is 140dB because of the chopping self-calibration of Vos. However, the roll-off in PSRR and CMRR is controlled by the circuit topology used in the designing of the OPA187 and that's is the reason why CMRR stay…
Hi Ifthekhar,
The Sallen-key filter should behave like as an op amp buffer, where the output should follow the input at DC. You have mentioned that you have checked all the component values. I can not think of a reason that the output will have 2Vdc…
Part Number: OPA4187 Hi,
The chopping frequency is 125 kHz, but is it OK to use as 3rd order LPF of 3 kHz? And do I need to add a filter that suppresses 125 kHz?
https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/947368/opa187…
Ken,
I think the difference is just a matter of how the output graph is scaled (i.e. dB, linear, logarithmic). In your attachment of "open loop output impedance", the graph provided and your "Zout_ohm" graph are the same, but the provided graph is in…
Hi Shinu,
There is no part which matches your comparison sheet. You may take a look at the OPA187, OPA2187 or OPA4187 as mentioned in a previous post.
Without the demanding requirements (like supply, bw, power, offset) this becomes challenging.
…
Part Number: ADS1263EVM-PDK Other Parts Discussed in Thread: ADS1263 , ADS8684 , OPA2188 , ADS8638 , OPA2182 , OPA187 , ADS8694 , ADS8684A Hello;
I am design a circuit for 0/4~20mA &±10V、±5V、0~1.25V、0~2.5V、0~5V、0~10V converters to digital signal。Althought…
