Semtech Delivers 10G PON Chipset for Triple-Generation 50G OLT Modules

New GN7153C and GN28L46 chipset targets triple-generation 50G OLT modules with lower power, reduced BOM cost and higher integration.

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GN7153C and GN28L46 combine XGS-PON OLT with on-chip RSSI—optimizing space, cost and power in SFP-DD modules

CAMARILLO, Calif.--(BUSINESS WIRE)-- Semtech Corporation (Nasdaq: SMTC), a leading provider of high-performance semiconductors powering AI data center networking and intelligent, connected Internet of Things (“IoT”) devices worldwide, today announced an industry-first chipset for 10G passive optical network (PON) optical line terminal (OLT) applications.

Semtech's GN7153C OLT combo IC and GN28L46 burst-mode TIA form an integrated chipset for 10G PON OLT applications, supporting GPON, XGS-PON and 50G PON in a single SFP-DD module.

As network operators globally begin scaling to 50G PON deployments, equipment vendors need to support multiple generations of PON technology—GPON (2.5Gbps), XGS-PON (10Gbps) and 50G PON, all within a space-constrained SFP-DD module form factor. Furthermore, 50G OLT systems require high SFP-DD port density making module power a critical design priority.

The GN7153C OLT combo IC and GN28L46 burst-mode transimpedance amplifier (TIA) bring a new level of integration, low power and design flexibility to optical module manufacturers and broadband system vendors developing next-generation fiber broadband infrastructure.

The chipset pairs the GN7153C, a 10G PON OLT combo IC integrating a dual-rate burst-mode limiting amplifier and laser bias driver outputs, with the GN28L46, a high-sensitivity burst-mode TIA. Together, they form a tightly integrated solution for 10 gigabit symmetric passive optical network (XGS-PON) applications compliant with ITU-T G.9807.1 standards.

The GN7153C uses lower supply voltages to deliver up to 400mW of savings per port, across a fully populated 16-port optical line terminal, that aggregates to 6.5W of system-level power savings.

The GN28L46 has an accurate Received Signal Strength Indicator (RSSI) mirror, together with the burst-mode sample-and-hold circuit in the GN7153C, that improves accuracy and eliminates the need for standalone RSSI controllers, further reducing component count and BOM cost.

“The GN7153C enables module suppliers and system vendors to realize the promise of 50G PON infrastructure,” said Amit Thakar, vice president, signal integrity product marketing at Semtech. “By integrating the SOA driver, on-chip RSSI and dual TOSA bias driver outputs into a single device—and pairing it with the industry-leading sensitivity of the GN28L46 TIA—we are giving our customers the design flexibility and power efficiency they need to build the next generation of triple-gen optical line terminal modules.”

The GN7153C and GN28L46 chipset is currently available for sampling. Volume production is scheduled for September 2026.

Semtech will showcase the GN7153C and GN28L46 chipset at CIOE 2026, Sept. 9–11 in Shenzhen, China, at Booth #11C52.

Learn more at http://www.semtech.com/optical.

About Semtech

Semtech Corporation (Nasdaq: SMTC) is a leading provider of high-performance semiconductors powering AI data center networking and intelligent, connected IoT devices worldwide. Our global teams are committed to empowering solution architects and application developers to develop breakthrough products for the infrastructure, industrial and consumer markets. To learn more about Semtech technology, visit us at Semtech.com or follow us on LinkedIn or X.

Semtech and the Semtech logo are registered trademarks or service marks of Semtech Corporation or its subsidiaries. All other trademarks, service marks and trade names mentioned in this press release are the property of their respective owners.

SMTC-P

View source version on businesswire.com: https://www.businesswire.com/news/home/20260908772887/en/

Michelle Lozada, pr@semtech.com

Source: Semtech Corporation

Key Terms

passive optical network technical

A passive optical network (PON) is a fiber-optic broadband system that uses a single main fiber line and simple, non-powered splitters to deliver high-speed internet and data to many homes or businesses, like a tree trunk branching into many smaller limbs. It matters to investors because PONs lower operating costs, scale efficiently as subscribers grow, and enable higher service speeds—factors that influence capital spending, profit margins, competitive positioning, and potential revenue from broadband services.

optical line terminal technical

An optical line terminal (OLT) is the central equipment at a service provider’s facility that connects the provider’s core network to a passive optical network (PON) running out to customers. It manages and converts data between the provider’s systems and many customer endpoints, controls bandwidth allocation and service provisioning, and acts like a traffic controller for fiber-based broadband. Investors care because OLTs determine network capacity, upgrade paths, and how many subscribers a fiber rollout can support.

burst-mode transimpedance amplifier technical

A burst-mode transimpedance amplifier is an electronic front-end that converts tiny input currents from optical detectors into usable voltage signals and is engineered to handle short, intermittent packets of data without long recovery times. Think of it like a fast camera shutter that must start and stop quickly between snapshots; its speed and stability determine how well network or fiber‑optic equipment reads bursty traffic, affecting product performance and market competitiveness.

received signal strength indicator technical

Received Signal Strength Indicator (RSSI) is a numeric measure of how strong a wireless radio signal is at a receiver, reported by devices and network equipment to indicate link quality. Investors care about RSSI because it affects how reliably devices and services connect — like a thermometer for wireless links — which in turn influences user experience, network performance, product design, and costs for companies that build or operate wireless systems.