Hi all,
I am interested in using the LT1167 Instrumentation Amplifier (IA) to amplify a signal of few milliVolts. The datasheet states that the gain can be set with one external resistor to get gains of 1 to 10,000.
In many instrumentation amplifiers applications I see of the internet, I notice that they apply small gain to the Instrumentation Amplifier and then use a secondary op-amp to apply the remaining gain, Is there a reason for doing so?
I need a gain of 1000 but I am concerned that the higher the gain, the less the IA performance.
From the datasheet of the LT1167 I noticed the following:
Higher gain = higher nonlinearity
Higher gain = longer settling time
Higher gain = better CMRR
Higher gain = less bandwidth
Can someone please mention some advantages and disadvantages of increasing the IA gain?
Shell I apply the full gain or use a secondary op-amp?
Below is the link to the LT1167 datasheet:
http://cds.linear.com/docs/en/datasheet/1167fc.pdf
Thanks in advance,
I am interested in using the LT1167 Instrumentation Amplifier (IA) to amplify a signal of few milliVolts. The datasheet states that the gain can be set with one external resistor to get gains of 1 to 10,000.
In many instrumentation amplifiers applications I see of the internet, I notice that they apply small gain to the Instrumentation Amplifier and then use a secondary op-amp to apply the remaining gain, Is there a reason for doing so?
I need a gain of 1000 but I am concerned that the higher the gain, the less the IA performance.
From the datasheet of the LT1167 I noticed the following:
Higher gain = higher nonlinearity
Higher gain = longer settling time
Higher gain = better CMRR
Higher gain = less bandwidth
Can someone please mention some advantages and disadvantages of increasing the IA gain?
Shell I apply the full gain or use a secondary op-amp?
Below is the link to the LT1167 datasheet:
http://cds.linear.com/docs/en/datasheet/1167fc.pdf
Thanks in advance,