survey parts - high speed amp

[FAE] Andrew Wang

Genius 10685 points

Other Parts Discussed in Thread: LMH5401, LMH3401

Hi Team,

Customer is looking any high speed amp that meeting below spec, any suggest one?

Thanks!

Andrew

PARAMETER	TEST CONDITIONS	MIN	MAX	UNIT
Output voltage	Output load=100Ω	±1		Vpp
Differential input voltage	Gain=1V/V	±1		Vpp
Large-signal bandwidth	Vout=2Vpp	2		GHz
Common-mode input range	Output load=100Ω, Gain=1V/V	±0.75		V
Rise time & Fall time	Large-signal transient response		77	ps
Common-mode rejection ratio	1MHz	60		dB
	30MHz	50		dB
	1GHz	30		dB
Input-referred voltage noise	Output load=100Ω, Gain=1V/V		13.26	nV/√Hz
Slew rate	Output load=100Ω, Gain=1V/V		12	V/ns
Settling time to 1%	Vout=2Vpp		2	ns
Input offset voltage drift	Output load=100Ω, Gain=1V/V		26	uV/°C
Total harmonic distortion	f=1GHz, Vout=2Vpp		-35	dB

over 4 years ago

0 Sima Jalaleddine over 4 years ago

TI__Mastermind 29575 points

Hello Andrew,

Are they looking for a single ended output amplifier or a fully differential amplifier?

Thank you,

Sima

0 kai klaas69 over 4 years ago

Guru 140200 points

Hi Andrew,

the LMH3401 and LMH5401 come into my mind. Have you had a look at these two OPAmps?

https://www.ti.com/amplifier-circuit/op-amps/high-speed/products.html#p512=8.8;7000&p23typ=2000;8000&p22typ=12000;18200&sort=p23typ;asc

Kai

0 [FAE] Andrew Wang over 4 years ago

TI__Genius 10685 points

Hi Sima and Kai

Thanks for feedback, interestingly customer was asking for single-ended output. Do we have such solution? Or we must gain by two, and just use one of the diff output pin then? Thx.

Andrew

0 Sima Jalaleddine over 4 years ago in reply to [FAE] Andrew Wang

TI__Mastermind 29575 points

Hello Andrew,

They could use a fully differential amplifier and ground one of the outputs if they only want a single-ended output. I will look for first single-ended output, but we might need to switch to a FDA here. One more question, it looks like most of the specs listed are for unity gain. Will they need to change the gain of the application, we do have some buffer amplifiers with high BW and slew rate as well.

Thank you,

Sima

Amplifiers

Amplifiers forum

survey parts - high speed amp