LM7321: Alternate for LM7321 or where to buy

ayyaz Mahmood

Prodigy 30 points

Part Number: LM7321
Other Parts Discussed in Thread: LM8261, , TINA-TI

Hello All

I am usingLM7321MFE/NOPB which has 5 pins. I want to know is there any other similar op amp likeLM7321MFE/NOPB

or is it possible to buy this IC somewhere?

over 3 years ago

0 kai klaas69 over 3 years ago

Guru 140200 points

Hi Ayyaz,

can you narrow the requirements of the replacement?

Kai

0 ayyaz Mahmood over 3 years ago in reply to kai klaas69

Prodigy 30 points

I want to drive with +15V and -15V. I need rail to rail output. I need not more than 30mA of current, upto 20mA is also ok. It shoud have SOT23-5 package. I want to use in a voltage regulator circuit.

0 Ron Michallick over 3 years ago in reply to ayyaz Mahmood

TI__Guru**** 171106 points

Hello Ayyaz,

LM8261 is close. Full list URL below.

https://www.ti.com/amplifier-circuit/op-amps/products.html?login-check=true#p480=1;1&p1261max=30;180&p23typ=10;8000&p22typ=9;8000&p78=Out&p233typ=30;10000&sort=p3318;desc

0 ayyaz Mahmood over 3 years ago in reply to Ron Michallick

Prodigy 30 points

Thank you but i saw this is not possible to buy at the moment

0 Ron Michallick over 3 years ago in reply to ayyaz Mahmood

TI__Guru**** 171106 points

Ayyaz,

What do you see? I see many available.

0 ayyaz Mahmood over 3 years ago in reply to Ron Michallick

Prodigy 30 points

I live and work in Germany, we order normally from Germany. i think we have to order it from USA i think. People have used LM8261? does it works good like LM7321? We have electronics with LM7321 which works very good but I do not know how it will be with LM8261 Thank you

0 kai klaas69 over 3 years ago in reply to ayyaz Mahmood

Guru 140200 points

Guten Tag Ayyaz,

you could run a TINA-TI simulation. Can you post a schematic?

Kai

0 Ron Michallick over 3 years ago in reply to kai klaas69

TI__Guru**** 171106 points

Ayyaz,

A quick comparison.

► Part Number	LM7321	LM8261
Manufacturer	TI	TI
Channel Count	1	1
Vs Range	2.5V to 32V	2.5V to 30V
GBW (MHz)	20	21
Slew Rate (V/µs)	18	12
V_os max @ 25^oC (mV)	6	5
Vos Drift, typ (µV/^oC)	2	2
Rail-to-Rail	In, Out	In, Out
I_Q typ (mA)	1.1	0.97
V_N (nV/√Hz)	15	15
I_SC typ (mA)	65	53
IBias (Max) (pA)	200000	2000000
Operating Temperature (°C)	-40 to 125	-40 to 85
Available Packages	SOIC-8, SOT-23-5	SOT-23-5
Price (1ku web $)	$0.674	$0.964

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LM7321: Alternate for LM7321 or where to buy