NEWLY INTRODUCED 224G
Newly introduced 224G linear octal TIAs and MZM driver
Newly introduced 224G linear octal TIAs and MZM driver
GN1838L, GN42T380 and GN42M380 for NPO and CPO optical engines
AI & HPC · Data Center · Telecommunications
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On 25 August 2026 Semtech introduced a family of 224G linear transimpedance amplifier (TIA) and driver solutions for Near-Packaged Optics (NPO) and Co-Packaged Optics (CPO) used in AI/ML clusters, hyperscale data centers and next-generation networking.
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Newly introduced Semtech 224G linear TIA and driver portfolio (GN1838L, GN42T380 and GN42M380) for near-packaged and co-packaged optics. Contact Semtech for availability.
The published products are the GN1838L and GN42T380, described as the industry’s first linear octal TIAs, and the GN42M380 linear octal Mach-Zehnder modulator (MZM) driver, optimized for 1.6T, 3.2T, 6.4T and 12.8T optical engines. Semtech says the portfolio is optimized for CEI-224G-Linear and Open CPX interfaces. GN1838L is published at 500 µm channel pitch and GN42T380 at 375 µm, with TIAs usable beside a photonic integrated circuit or placed on top of it; both include automatic gain control and programmable CTLE. GN42M380 is published at 375 µm channel pitch and supports silicon photonics, indium phosphide MZM and thin-film lithium niobate modulators, with configurable output swing and on-chip equalization. Diagnostics are accessed through device pads and an I²C interface. Availability: contact Semtech for the GN1838L, GN42T380 and GN42M380 product family. This listing does not describe the portfolio as generally shipping.
Key characteristics associated with this technology.
Newly introduced 224G linear octal TIAs and MZM driver
GN1838L, GN42T380 and GN42M380 for NPO and CPO optical engines
CEI-224G-Linear and Open CPX; 500 µm and 375 µm channel pitches
Contact Semtech for availability
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