Overview
Please use GS2994, GS3440 and GS3140 for new designs.
The GS1674 is a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75ohm coaxial cable. The device is optimized for performance at 270Mbps and 1.485Gbps, and features DC restoration to compensate for the DC content of SMPTE pathological test patterns.
The Carrier Detect output pin (CD) indicates whether a valid input signal has been detected. It can be connected directly to the MUTE pin to mute the output on loss of carrier. The sensitivity of the carrier detect can be easily programmed to allow the GS1674 to distinguish between low-amplitude SDI signals and noise at the input of the device. The equalizing and DC restore stages are disengaged when the BYPASS pin is HIGH. No equalization occurs in Bypass mode.
The GS1674 is footprint and drop-in compatible with existing GS1574A and LMH0044 designs, with no additional application changes required.
Order Codes
- GS1674-INTE3: Lead-Free, RoHS Compliant, Tape and Reel-250 Pieces
PB Free/ROHS
Learn More →Features
- Replaces the LMH0044
- SMPTE 292M, SMPTE 344M and SMPTE 259M compliant
- Automatic cable equalization
- Performance optimized for 270Mbps and 1.485Gbps.
- Typical equalized length of Belden 1694A cable:
- 220m at 1.485Gbps
- 400m at 270Mbps
- Supports DVB-ASI at 270Mbps
- Manual bypass (useful for low data rates with slow rise/fall times)
- Programmable carrier detect with squelch threshold adjustment
- Standard EIA/JEDEC logic control and status signal levels
- Single 3.3V power supply operation
- 195mW power consumption (typical)
- Wide temperature range of -40ºC to +85ºC
- Small footprint QFN package (4mm x 4mm)
- Drop-in compatible with the GS1574A. Forward compatible with Gennum's 3G EQ products.
- Pb-free and RoHS compliant
| Documents | Release Date | Type |  |
|---|---|---|---|
| GS1674 Datasheet | 2018-11-14 | | |
| GS1674 IBIS Model | 2019-03-02 | IBS | |
Applications
- Audio De-embedders
- Audio Embedders
- Camera
- Camera Control Units
- Distribution Amplifiers
- Encoders/Decoders
- Format Detectors
- Master Control Switchers
- Monitors, Multiviewers
- Production Switchers
- Routers
- SMPTE 292M and SMPTE 259M coaxial cable serial digital interfaces
- Test and Measurement Equipment
- Up/Down/Cross Converters
- Video Capture Cards
- Video Servers
- Video Tape Recorders
Inventory
| Product | Country | Distributor | Qty | Buy |
|---|
Resources
.png)
CES 2025 - Semtech SurgeSwitch Demo…
LoRa-CES 2025 LoRa Demo-Advancing LoRa…
LoRa-CES 2025 LoRa demos-Exploring LoRa range…
Series and Parallel combination of Semtech's…
Integrating Effective Surge Protection to…
Endurance Test for Semtech's SurgeSwitch
The Challenge of Drain Grate Maintenance
In urban and industrial water management, drain grates play a crucial role in preventing debris from clogging sewage systems, retention basins and hydropower plants. These grates filter out foliage, branches and other obstructions, ensuring the smooth flow of water. However, over time, debris accumulation can lead to blockages, increasing the risk of flooding and requiring frequent manual inspections.
BLOG
Smart Drain Grate Monitoring: Enhancing Efficiency…
In a recent webinar hosted by Beecham Research on space-based asset tracking, industry experts came together to explore the latest advancements in asset tracking, through the enablement of satellite Internet of Things (IoT) connectivity. With increasing global demand for real-time asset monitoring, satellite technology is transforming how businesses track and manage their assets, even in the most remote areas. This blog serves as a summary of the conversations that took place during the live webinar.
BLOG
Webinar Recap: Revolutionizing Asset Tracking…
Earlier this month, Semtech and Keysight recently held a webinar focused on the concept and technology of Linear Pluggable Optics (LPO). We reviewed the important technical differentiators found in this emerging interconnect field and how the electro/optic interoperability and testing needs are being addressed to satisfy cutting-edge system interconnect performance needs.
BLOG
Webinar Recap: Linear Pluggable Optics – The…
In this second installment of a two-part series, we’ll explore how Sehaj Synergy Technologies Private Limited (SSTPL) and Tata Communications have successfully leveraged LoRaWAN® technology to implement smart metering applications across India. The following use cases highlight the benefits and impact of LoRaWAN, demonstrating its widespread adoption across various market segments, including commercial, enterprise, residential, and community applications.
BLOG
Part 2 - Smart Metering in India: Transforming…
The adoption of smart meters in India is revolutionizing utility management, particularly in water and energy consumption. With increasing urbanization and the growing need for resource conservation, smart metering solutions provide real-time visibility, automated controlsand data-driven decision-making capabilities. This transformation is particularly evident in large-scale commercial and residential projects, where efficient resource utilization is critical for sustainability and cost reduction.
BLOG
Part 1 - Smart Metering in India: Transforming…
USB Type-C has quickly become the go-to connector for modern electronic devices. Its innovative design, lightning-fast data transfer speeds, and impressive power delivery capabilities have made it indispensable in today’s technology landscape. However, with these advancements comes a critical challenge: protecting USB Type-C interfaces from Electrical Overstress (EOS) events such as Electrostatic Discharge (ESD).
In this blog, we’ll dive into the features that make USB Type-C revolutionary, the challenges of ESD and how the right protection strategies from Semtech can keep these tiny yet powerful connectors safe and reliable.
BLOG
ESD Protection for USB Type-C Interfaces: Ensuring…Talk With Us Today
Semtech is here to help. When you have questions, our experts have answers.
