Hello Saba,
The -3 dB bandwidth of the digital filter is about 0.262 * f_DATA. At 500 SPS, this gives you a -3 dB bandwidth of about 131 Hz. I do not see a benefit is reducing the cutoff frequency of the antialiasing filters.
The shield drive circuitry…
Part Number: TMUX1511 Other Parts Discussed in Thread: TLV6741 , TMUX1111 Hello,
I would like to use the TMUX1511 in an application as discussed in section 9.2.2 (Transimpedance Amplifier Feedback Control) of the data sheet. In section 9.2.2.2, the…
Clark,
OPA314 is a good choice. I prefer TLV6741; reducing noise was a key factor in its design. R243 and C217 are set to 73kHz, if you need less bandwidth then C217 can be increased to reduce total noise level.
Hi V Pot,
You might want to consider OPA320 or TLV6741.
The exact meaning of low noise is going to depend on your circuit configuration. A bipolar input op amp with very low voltage noise may have significant current noise, which will dominate the…
Hi Giovanni,
The main benefit of adding an op amp in a buffer configuration to your ADC's reference supply is an increase in current drive capability. This topic is described in great depth in a series of video lectures on ADCs in TI Precision Labs…
Hello Noah,
The circuit shown in TIDU765 can be modified to work at +3.3V. However, the OPA172 that was used in the design requires a minimum power-supply voltage of +4.5V, so you'll need to select a different op amp to work at +3.3V.
Consider the…
Hi Thomas,
Once you know more about your sensor and the type of input and output signals you need, we'll be able to provide more specific recommendations and design guidance. For now, I'll cover some of your questions regarding circuit topology and…
Hello Gustaf
Thanks for the solution. I ran the same and it shows the correct response now.
One small note though: I tried selecting the OPA322, but it does not have a simulation mode. TLV9062 and TLV6741 does not come in the full OP-AMP list.
Hi Jason,
Thanks for your interest in our part. This device is scheduled for release early October.
In the meantime, can I interest you in the attached parts with similar performance and specs.
Device
lmv321a
tlv9064
tlv9002
tlv9061…
