TL082: PSRR for TL082&TL072

Zhou Fang67

Expert 4250 points

Part Number: TL082
Other Parts Discussed in Thread: TL072,

Hi,

Is there a PSRR vs Frequency diagram for TL082 & TL072?

Thanks.

Zhou

over 7 years ago

0 Collin Wells over 7 years ago

TI__Guru 64195 points

Hello Zhou,

This information is not included in the TL072 or TL082 product datasheets. We are looking to see if this data has been measured already and will reply back based on what we find.

0 Zhou Fang67 over 7 years ago in reply to Collin Wells

TI__Expert 4250 points

Hi Collin,

Thanks. We require PSRR for power ripple impact analysis.

Thanks a lot.

Zhou

0 Ron Michallick over 7 years ago in reply to Zhou Fang67

TI__Guru**** 166636 points

Zhuo,

Sorry, I was unable to find this data.

I could guess at it. AVD is typically 106db (200V/mV) and KSVR is typically 100 dB, and B1 bandwidth is 3MHz

Assuming same dominant pole location, PSRR zeros out at 1.5 MHz (3MHz/ (106dB-100db))

I estimate PSRR to look like this.

Amplifiers

Amplifiers forum

TL082: PSRR for TL082&TL072