Maxim intros SFP+ optical module controller for optical video/Zhone introduces 18 zNID optical network terminals for GPON and Gigabit Ethernet
JUNE 10, 2010 –Maxim Integrated Products (NASDAQ: MXIM) has introduced the DS1876, an SFP+ video controller with a dual laser diode driver (LDD) interface. The device is designed to control and monitor all transmitter functions for SFP+ MSA optical modules and fully support the SFF-8472 specification.
The DS1876 controls two laser drivers to enable low-cost implementation of modules supporting SDI digital video and other optical video applications. The chip gives customers all necessary control and monitoring functionality in a single device, thus saving the expense of two microcontrollers as well as complex software development, Maxim says.
Automatic power control (APC) and laser modulation are controlled through four temperature-driven look-up tables (LUTs) featuring 10-bit delta-sigma DAC outputs with an independent 72-entry LUT for each output. The DS1876 monitors six analog channels: temperature, Vcc, and transmit power and bias current for each of the two laser drivers. It also provides an I2C-compliant interface to the host system.
The DS1876 is fully specified over the -40 degrees Celsius to +95 degrees Celsius temperature range, says Maxim, and is available in a 5×5-mm 28-pin TQFN package. Pricing begins at $1.75 (1000-up, FOB USA).
JUNE 16, 2010 — Zhone Technologies Inc., provider of network access solutions for fiber, copper, and wireless broadband infrastructures, has introduced 18 new zNID optical network terminals (ONTs) for GPON and Active Ethernet deployments.
According to a company representative, these new additions to the zNID-42xx product line provide a 10x performance improvement over earlier models, while optimizing service provider’s ONT costs for a variety of deployment configurations.
Based on a wire-speed router architecture, Zhone’s ONTs deliver data throughput regardless of packet size to support demanding FTTx applications. All new models provide dual 1Gigabit Ethernet LAN ports, two or four voice ports with support for SIP, SIP-PLAR, and MGCP Voice over IP protocols, offering service providers a migration path from legacy to softswitch architectures without replacing ONTs.
The latest generation of HPNA chipset for home networking is optimized with flexible provisioning over phoneline and coax. Active Ethernet models provide an SFP uplink that supports a variety of Active GigE transceivers for greater deployment flexibility. GPON models are available with and without support for downstream RF Video or RfoG.
