Amplifiers

Amplifiers forum

State Resolved
Locked Locked
Replies 3 replies
Answers 1 answer
Subscribers 47 subscribers
Views 140 views
Users 0 members are here

Support feedback

Options

Options

Similar topics

LMP7702: LMP7702

Hironari Ishiguro

Prodigy 80 points

Part Number: LMP7702
Other Parts Discussed in Thread: OPA391, OPA392, OPA396, OPA376

Tool/software:

I am looking for to operate from 0V input till close to Vdd. Actually I am using LMP7702 for baffa. But at the very low input voltage suvh as a few mv, the output didn't get exactly same voltage as input.

I actually don't need to operate till Vdd (close would be fine.) So, please advise or suggest any operational amp. (Need higher Band width would be appreciate.)

BEST REGARDS

Hironari

0 Raymond Zhang1 3 months ago

TI__Guru 57801 points

Hi Hironari-san,

Hironari Ishiguro said:
But at the very low input voltage suvh as a few mv, the output didn't get exactly same voltage as input.

The LMP7702 has typical output voltage from 30mV up to 170mV (worst case), and it is not suited for low voltage buffer circuit.

Without knowing your application, my guess is that OPA396/OPA392/OPA391 may be suitable for a buffer application. we have others as well.

https://www.ti.com/lit/ds/symlink/opa396.pdf?ts=1730097085760&ref_url=https%253A%252F%252Fwww.mouser.cn%252F

https://www.ti.com/lit/ds/symlink/opa392.pdf

https://www.ti.com/amplifier-circuit/op-amps/precision/products.html#480=1&23typ=1%3B10&sort=23typ;asc&

If you have other questions, please let me know.

Best,

Raymond

+1 Hironari Ishiguro 3 months ago in reply to Raymond Zhang1

Prodigy 80 points

Mr. Raymond

Thank you very much your prompt reply.

I will try with opa392 after I get it.

Right now, I have OPA376 in my hand. If any problem/concern for OPA376, please let me know.

BEST REGARDS,

Hironari

0 Raymond Zhang1 3 months ago in reply to Hironari Ishiguro

TI__Guru 57801 points

Hi Hironari,

OPA376 will be ok as well for the low signal buffering.

Best,

Raymond