TINA/Spice/OPA170: OPA170AIDR -replacement for cheaper IC

Hi Vladimir,

The TLV8801 will not work in your current design because the maximum supply voltage is only 5.5V and you are using 10V. Also the bandwidth of the devices is 200 times less than the OPA170.

I recommend to take a look at the TLV170. If the TLV170 will not work for you please provide me with a list of specifications your design requires such as offset voltage, bandwidth, quiescent current, etc. and I will look at other options for you.

Thank you,

Tim Claycomb

Dear Tim, thank you
1) I still plan to use LM2903 comparator in my circuit. Is there a TINA-TI model for it? Can I use the PSpice model of LM2903 in TINA-TI ?

2) How do you think: is there any sense in doing my circuit (with 3 Op Amps) using TLV4170 on two-layer PSB?( I can use 0603 size resistors and capaciors). Or is it better to take 3 pcs TLV170?

My design:
3) Input frequency is 50 Hz, then I believe that the amplifier with a very small frequency band will do
4) Quiescent current - 5....10 mA suitable
5) Offset voltage - 3...5 mV suitable
6) Power supply +/- 5V, rail-to-rail output

TIA
Sincerely
Vladimir Naumenkov
www.agat.by

1

Hi Vladimir,

It sounds like the TLV170 will work in your design and there is a TINA-TI model provided online for the TLV170. If the TLV170 will not please let me know.

For the LM2903, I recommend starting a new thread on the forum for the LM2903 because that device is supported by a different group.

If my response has answered all of your questions please click the green "This resolved my issue" button.

Thank you,

Tim Claycomb