Hello Kent,
Questions concerning AD8554 and AD8668 should be supported by their manufacturer.
A nice tool for selecting op amps is located here:
www.ti.com/.../OPAMPS-SELGUIDE
One device that may be of interest is the OPA333, though please understand…
Hello Adzhri,
The INA219 will not work for this application because the input bias current (~20uA) is of the same magnitude of the current you're trying to measure. I recommend using an op amp with a small input bias current. While the LPV812 does…
Reinhold,
I would initially try a gain stage between the PGA output and the COMPIN input instead. You should be able to achieve addition 20dB gain. Use an OPAM with proper slew rate and GBW to avoid distortion of the echo. For water application we recomm…
Hello,
Here is a list of devices with at least 50MHz, 900V/us slew rate that can swing 30Vpp @ 5MHz (require supply voltages of at least +/-17), from Selguide:
http://www.ti.com/tool/opamps-selguide
LM6172, LM7171, LM7372, LME49713, THS3001
Regards, …
Hello Nat,
For large input impedance you will need either op amps or instrumentation amplifiers. The only TI instrumentation amplifier that is capable of a gain less than one is the INA326. Please be aware, however, that the input common-mode voltage…
Hello Emmanuel,
Thanks for the additional information. I have looked at the CR2 hydrophone that you're interested in and cannot find (or do not understand how to derive) the output voltage. I suppose this is because they have designed and sell amplifiers…
Hi Jamaal,
Your other choices are the following, which you can find by using SelGuide:
http://www.ti.com/tool/opamps-selguide
LMH6629 (0.69nV/RtHz, limited to 5V total supply voltage, 140MHz with Av= 30V/V)
LMH6624 (0.9nV/RtHz, 50MHz with Av=30V/V)
…
Hello Sahand,
The closest device to your list of requirements is the THS3001, as shown below to the left. However, its offset voltage is 3mV and it is not available in 8 pin DIP! However it is unity gain stable with RF= 1kohm. Since it is a current feedback…
Hello All,
Here is a list of TI amplifiers which can run from +/-35V supplies and have at least 5MHz of bandwidth. You would have to check the respective datasheet for the finer details:
http://www.ti.com/tool/opamps-selguide
Alternatively, it may be…