TLV27L1: normal operation with input CMV = -0.2V for temperature range -20deg.C to +85deg.C

Nitish Agrawal

Part Number: TLV27L1
Other Parts Discussed in Thread: TLC271

Hello,

I am looking to design in the op-amp TLV27L1 in my application where the input common mode voltage = -0.2V.

TLV27L1 datasheet does state recommended minimum input common mode voltage to be -0.2V.

However, the TLV27L1 datasheet appears to guarantee normal operating characteristics when minimum input common mode voltage is at 0V over the entire operating temperature range. My operating temperature range is -20deg.C to + 85deg.C.

Is my understanding correct? If yes, is there another micro power opamp (with Vdd up to 15V) that guarantees normal operation with input common mode voltage at -0.2V over the entire operating temperature range?

Kind regards,

Nitish Agrawal

over 5 years ago

0 kai klaas69 over 5 years ago

Guru 140200 points

Hi Nitish,

the TLC271 directly comes into my mind. The "TLC271C" and the "TLC271I" (but not the "TLC271M"!) are specified down to -0.2V common mode input voltage over the full temperature range.

Kai

0 Nitish Agrawal over 5 years ago in reply to kai klaas69

Expert 1525 points

Hello Kai,
Thank you for recommending TLC271. It is unclear to me what the supply current is in the low bias mode. I need it to be ~5uA (or no more than TLV27L1) when operating from Vdd = +14V.
Kind regards,
Nitish Agrawal

0 kai klaas69 over 5 years ago in reply to Nitish Agrawal

Guru 140200 points

Hi Nitish,

figure 84 of datasheet says that the supply current at VDD=14V will be about 18µA. Supply current of TLV27L1 will be about 6µA.

Kai

0 Ron Michallick over 5 years ago in reply to kai klaas69

TI__Guru*** 140026 points

Here is the link to the nearly identical thread.
e2e.ti.com/.../2575474

Amplifiers

Amplifiers forum

TLV27L1: normal operation with input CMV = -0.2V for temperature range -20deg.C to +85deg.C