21 March 2016

GigOptix launches 28G/100G chipset portfolio for short- and long-reach Ethernet datacenter applications

GigOptix Inc of San Jose, CA, USA (a fabless supplier of analog semiconductor and optical communications components for fiber-optic and wireless networks) has launched a complete chipset portfolio for 28Gbps- and 100Gbps-based solutions for short-reach (SR) and long-reach (LR) Ethernet applications for inter- and intra-datacenter connectivity.

"With an already dominating market share in the current generation of 40Gbps active optical cables (AOCs) and transceivers for datacenter connectivity, GigOptix is pleased to announce that it started shipping complete production chipsets for 100Gbps short-reach (SR) and long-reach (LR) Ethernet applications for inter- and intra-datacenter connectivity," says Tom Kapucija, director of datacom marketing. The chipsets comprise: 1x and 4x short-reach  transimpedance amplifier (TIA) receiver (HXR8201 and HXR8204), vertical-cavity surface-emitting laser (VCSEL) driver (HXT8201 and HXT8204), 1x and 4x long-reach directly modulated laser (DML) driver (HXT42100 and HXT42400), complemented by the proven clock & data recovery (CDR) technology represented by the 2x and 4x CDR/re-timer chips (HXC42200 and HXC42400).

GigOptix short- and long-reach configurations

In addition to the quad-channel devices, GigOptix is releasing production samples of its single-channel products for SFP28+ modules and its 12-channel products for super-computer applications.

For SR10 applications  

In addition, the 12-channel solutions for super-computer applications, consist of the following configuration:  

• HXT8201 – single-channel, 28Gbps VCSEL driver;
• HXR8201 – single-channel, 28Gbps TIA+PA (power amplifier) receiver; and
• HXC42400 – quad-channel, 28Gbps CDR/re-timer.

Short-reach solutions

The single- and 12-channel TIA+PA receivers are developed around the HXR8204 four-channel receiver architecture with integrated TIA provides 60μAPP input sensitivity at 28Gbps with 10-12 bit error rate (BER), AGC and ATC, and a limiting post-amplifier stage. Linear per-channel RSSI outputs are provided to enable active alignment during manufacturing in order to provide optimum performance and manufacturability. The 1MHz I2C interface enables full control of additional functionality such as signal detect and squelch, pre-emphasis, maskable interrupt generation, internal temperature monitor selection, channel polarity inversion, and output voltage swing with enable.

The single- and 12-channel VCSEL drivers are developed upon the HXT8204 four-channel VCSEL driver architecture which supports modulation and average VCSEL currents up to 10mA with a dedicated BurnIn capability up to 15mA average current. The 1MHz I2C interface enables full control of all driver functions including input equalization, output peaking and peaking duration, signal detect and squelch, channel polarity inversion, diagnostics such as average current and temperature monitoring as well as user-maskable interrupts and VCSEL voltage supervisory functions.

Long-reach solutions

The HXT42100 and HXT42400 DML drivers share the same architecture with a high level of integration, low power dissipation, and small form factor. The HXT42100 single-channel driver footprint is sufficiently small to use within a TOSA (TO-can) solution. Both DML driver solutions support low voltage supply operation as low as 2.5V with modulation and bias currents of 50mA and 50mA respectively, enabling the next generation of low-power modules, and can be driven with supply voltages up to 3.3V if higher modulation and bias currents are required. A single-channel operating at 2.5V will dissipate less than 200mW of chip power. Neither of the two devices require any external digital analog convertors (DAC) for operations.

A high level of integration is provided with both the HXT42100 and HXT42400 by incorporating the modulation, bias and pulse-shaping DAC into the devices with an integrated I2C interface for control, monitoring, fault and status detection. The 1MHz I2C interface enables full control of additional functionality such as signal detect and squelch, bandwidth adjust, maskable fault and interrupt generation, internal temperature monitor selection, channel polarity inversion, and programmable CTLE input equalization.

"Our patented, low-power digital CDR architecture complements our leading datacom transimpedance amplifier (TIA) and laser driver (LD) portfolio to support both short- and long-reach applications," says Tom Kapucija. "GigOptix will continue to leverage its innovative products and architectures for the current generation and future generations of datacenter connectivity solutions."

GigOptix is giving SFP28+ and QSFP28 product demonstrations in booth #3419 at the Optical Fiber Communication Conference & Exhibition (OFC 2016) in Anaheim, CA, USA (22-24 March).

Tags: GigOptix

Visit: www.ofcconference.org

Visit: www.gigoptix.com