Products Mentioned

LTC6363 Last Time Buy
The LTC6363 family consists of four fully differential, low power, low noise amplifiers with rail-to-rail outputs optimized to drive SAR ADCs. The LTC6363...
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LTC6363 on Analog.com

ADA4945-1 Recommended for New Designs
The ADA4945-1 is a low-noise, low-distortion, fully differential amplifier with two selectable power modes. The device operates over a broad power supply...
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ADA4945-1 on Analog.com

LTC2386-18 Production
The LTC2386-18 is a low noise, high speed, 18-bit 10Msps successive approximation register (SAR) ADC ideally suited for a wide range of applications. The...
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LTC2386-18 on Analog.com

AD8475 Production
The AD8475 is a fully differential, attenuating amplifier with integrated precision gain resistors. It provides precision attenuation (by 0.4 or 0.8),...
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AD8475 on Analog.com

LTC6363-2 recommended replacement?

OliverKSedlacek

on Feb 19, 2024

Category: Hardware

Product Number: LTC6363

I know this isn't the first time this question has been posted, but the answers were all 100% unhelpful. Any suggestions for a substitute?

Tags: amplifiers hardware ADA4945-1 LTC2386-18 Fully Differential Amplifiers Differential Amplifiers and ADC Drivers LTC6363 ad8475 Show More

0 GLADION

on Feb 19, 2024 7:02 PM
Hi OliverKSedlacek ,

Good day. What design parameters are you considering in your design? You may want to check out ADA4945-1 as a possible substitute for LTC6363-2. Thank you.

Regards,
Gilbeys
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0 OliverKSedlacek
on Feb 20, 2024 2:12 AM in reply to GLADION
The ADA4945-1 doesn't have fixed gains. I was using the LTC6363-2 to drive the 10 MSPS 18 bit LTC2386-18.
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0 GLADION

on Feb 21, 2024 1:14 AM in reply to OliverKSedlacek
Hi OliverKSedlacek ,

Good day. You can also check ADA4950. ADA4950 has selectable differential gains of 1, 2, and 3.

Regards,
Gilbeys
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0 OliverKSedlacek
on Feb 21, 2024 4:56 AM in reply to GLADION
Thanks, that didn't show up in the searches, probably because of its low input impedance. Not a problem for me, but at 6 times the power it's going to be non starter.
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0 GLADION

on Feb 22, 2024 9:44 PM in reply to OliverKSedlacek
Hi OliverKSedlacek ,

Good day. Regarding low power with selectable gain, you may want to check AD8475. However, the gain selection for this part is only limited to 0.4 and 0.8. On the other hand, the ADA4940 family is an ultralow power fully differential ADC driver with no selectable gain.

Regards,
Gilbeys
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0 OliverKSedlacek
on Feb 23, 2024 3:44 AM in reply to GLADION
Re AD8475, as it can't do a gain of 2 it's no substitute and with the ADA490 it wont handle more than 7V total supply and I'm back to mucking around with precision resistors. I'm going with a TI offering that does the job.
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LTC6363-2 recommended replacement?