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ADL5544 Recommended for New Designs
The ADL5544 is a single-ended RF/IF gain block amplifier that provides broadband operation from 30 MHz to 6 GHz. The ADL5544 provides over 34 dBm of OIP3...
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ADL5544 on Analog.com

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Operation of Low Frequency Band

Engineer0

on Jul 22, 2025

Category: Datasheet/Specs

Product Number: ADL5544

Question

1. S-Parameters are based on what circuit? Figure 29? or Figure 35? or EVAL board configuration?

enash

on Jul 23, 2025 9:49 AM
0
The s-parameters were collected using the schematic in Figure 29 but were subsequentially de-embedded. So these are pin-to-pin s-parameters of the device only.
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Engineer0
on Jul 23, 2025 10:08 AM
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Thank you for your response enash . What values (for C1, C2 and L1) would you recommend for an application from 50MHz to 3GHz?
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enash

on Jul 23, 2025 2:24 PM
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For an operating range of 50 MHz to 3 GHz, I would recommend the 100 MHz to 500 MHz components (C1=C2=100nF, L1=1000nH, C7=C8=Open/DNI). I believe that the performance will hold up well up to 3 GHz but I cannot find any data in our archives to support this. If you go with the default components (L1=100nH), you will still get ok gain but S11 and S22 will be degraded at low freq (see figures 30 and 31).
Eamon
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Operation of Low Frequency Band