• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 48 subscribers
  • Views 1196 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Replacement of INA332

Vahora Mohmmad
Prodigy 20 points

Other Parts Discussed in Thread: INA332, INA126, INA114, INA115, INA122, INA121, INA118, INA128

I want to use INA332 along with the MSP430G2 development board for the EKG measurement.

I want to replace INA332 with another instrumentation amplifier which is available in PDIP package.

Which instrumentation amplifier should I use to replace INA332?

  • 0
    TI__Mastermind 25875 points

    Hello Vahora,

    The INA332 is a 2-op amp instrumentation amplifier with an output gain stage. It requires 2 external resistors to set the gain.  We have no devices with the same topology that come in a DIP package.

    Therefore, I recommend either of the following:

    1) If this is just a development board, perhaps you could solder an INA332 on a DIP adapter board. There are a number of online vendors who sell MSOP-8 to DIP adapter boards.

    2) If this is your production design, here are some instrumentation amplifier that come in DIP packages: INA114, INA115, INA118, INA121, INA122*, INA126*, and INA128/9. However, they differ in topology (and performance, of course). For example, the INA122 and INA126 are 2-op amp instrumentation amplifiers, which are closer to the device you have already selected (INA332). The rest are traditional 3-op amp instrumentation amplifiers. All of them, however will have pinouts different from the INA332 because they only require 1 resistor to set the gain (the INA332 requires 2 resistors).  

    I hope this helps.