INA199: Hi Frequency Current Application

Dear Yuzuru,

Thanks for choosing the TI! Unfortunately, the fastest part we have available in the current sensing amplifiers portfolio is the INA293, which tops out at a bandwidth of 1MHZ, so if you need to sample signals of 2MHz, this won't work for you. 

I'm looping in our HSAMPS team to help make a recommendation here, but to help them along, can you let us know some details about your system? 

- Supply Voltage(s)

- Input Signal voltage range

- Desired Gain for the system

Hi Carolus.

Thanks for your reply.

I'll tell you my circuit details.

1. Supply Voltage　-3.3V/+3.3V (BiDirection)

2. Input Signal Voltage Range(Differential)  ±1Vp0. ( approximately. I'll try to determine through test circuit evaluation.  )

3.Desired Gain : 0～10dB  ( approximately. I'll try to determine through test circuit evaluation.  )

Sincerly.

Yuzuru

Hi Yuzuru,

what shunt do you want to use?

Can you show a schematic or a schematic sketch?

Kai