Post History
Looking at Texas Instruments opamp OPA2211it mentions GBW of 80MHz at a gain of 100, and 45MHz at gain of 1: Looking at the bandwidth graph from Figure 10 in datasheet: It looks like 80MHz is...
#3: Post edited
by
Nick Alexeev
·
2024-11-09T18:21:23Z (5 months ago)
update which was posted as an answer converted into an edit of the question
OPA2211 datasheet error
- OPA2211 datasheet discrepancy
- Looking at Texas Instruments opamp [OPA2211](https://www.ti.com/lit/ds/symlink/opa2211-ht.pdf?ts=1730130156089&ref_url=https%253A%252F%252Fwww.ti.com%252Famplifier-circuit%252Fop-amps%252Fprecision%252Fproducts.html)it mentions GBW of 80MHz at a gain of 100, and 45MHz at gain of 1:
- 
- Looking at the bandwidth graph from Figure 10 in datasheet:
- 
It looks like 80MHz is unity gain bandwidth, and at a gain of 100 the bandwidth is around 800kHz as would be expected. I could not find any errata or other posts on forums about this. Is this just a datasheet mistake?
- Looking at Texas Instruments opamp [OPA2211](https://www.ti.com/lit/ds/symlink/opa2211-ht.pdf?ts=1730130156089&ref_url=https%253A%252F%252Fwww.ti.com%252Famplifier-circuit%252Fop-amps%252Fprecision%252Fproducts.html)it mentions GBW of 80MHz at a gain of 100, and 45MHz at gain of 1:
- 
- Looking at the bandwidth graph from Figure 10 in datasheet:
- 
- It looks like 80MHz is unity gain bandwidth, and at a gain of 100 the bandwidth is around 800kHz as would be expected. I could not find any errata or other posts on forums about this. Is this just a datasheet mistake?
- **update:**
- It was clarified with Texas Instruments, and what they claim is that 80MHz is applicable bandwidth for A>=2, and 45MHz is applicable for unity gain ([question on the TI forum](https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1431163/opa2211a-clarification-on-gbw)):
- 
- 
- I have not yet seen a definition like this, is this considered common practice?
#2: Post edited
by
Nick Alexeev
·
2024-10-30T15:35:37Z (5 months ago)
- Looking at Texas Instruments opamp [OPA2211](https://www.ti.com/lit/ds/symlink/opa2211-ht.pdf?ts=1730130156089&ref_url=https%253A%252F%252Fwww.ti.com%252Famplifier-circuit%252Fop-amps%252Fprecision%252Fproducts.html)it mentions GBW of 80MHz at a gain of 100, and 45MHz at gain of 1:
- Looking at the bandwidth graph from Figure 10 in datasheet:
- It looks like 80MHz is unity gain bandwidth, and at a gain of 100 the bandwidth is around 800kHz as would be expected. I could not find any errata or other posts on forums about this. Is this just a datasheet mistake?
- Looking at Texas Instruments opamp [OPA2211](https://www.ti.com/lit/ds/symlink/opa2211-ht.pdf?ts=1730130156089&ref_url=https%253A%252F%252Fwww.ti.com%252Famplifier-circuit%252Fop-amps%252Fprecision%252Fproducts.html)it mentions GBW of 80MHz at a gain of 100, and 45MHz at gain of 1:
- 
- Looking at the bandwidth graph from Figure 10 in datasheet:
- 
- It looks like 80MHz is unity gain bandwidth, and at a gain of 100 the bandwidth is around 800kHz as would be expected. I could not find any errata or other posts on forums about this. Is this just a datasheet mistake?
#1: Initial revision
by
Elleanor Lopez
·
2024-10-28T15:50:45Z (5 months ago)
OPA2211 datasheet error
Looking at Texas Instruments opamp [OPA2211](https://www.ti.com/lit/ds/symlink/opa2211-ht.pdf?ts=1730130156089&ref_url=https%253A%252F%252Fwww.ti.com%252Famplifier-circuit%252Fop-amps%252Fprecision%252Fproducts.html)it mentions GBW of 80MHz at a gain of 100, and 45MHz at gain of 1:  Looking at the bandwidth graph from Figure 10 in datasheet:  It looks like 80MHz is unity gain bandwidth, and at a gain of 100 the bandwidth is around 800kHz as would be expected. I could not find any errata or other posts on forums about this. Is this just a datasheet mistake?