INA122: cross

Adam Daluga

Part Number: INA122
Other Parts Discussed in Thread: INA350, , INA321, INA155

Hello,

What is the best in stock cross you'd suggest for the INA122U? Would you be able to confirm the difference between INA155U vs INA155UA?

Thanks,
Adam

over 2 years ago

0 Marek Lis over 2 years ago

TI__Guru 62290 points

The closest to INA122 in terms of performance is our brand new INA350 (with selectable gains) and older INA321 - see below.

https://www.ti.com/amplifier-circuit/instrumentation/products.html#p480=1&p236typ=0.04;0.1

The INA155U is a high-grade of INA155UA standard grade. The only difference between them is based on their minimum CMRR (caused by internal resistor matching) - see below. However, please note that INA155 with its quiescent current of 1.7mA and is vastly differently part than low-power INA122 with IQ of just 60uA.

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INA122: cross