4x64Gbit/s Linear Differential I/O GX76473 Short-Form Datasheet Driver Description Features The GX76473 is a low-power, high-performance, Data rate up to 64Gbps per channel for quad-channel linear driver chip that is designed 400G/600G DP-mQAM applications for 400G/600G optical integrated transmitter > 40GHz Bandwidth small-form factor (SFF) modules for metro and > 10dB dynamic range of gain control long-haul applications. 2.1W (typical) at linear 1.8V ppd The GX76473 integrated quad lanes of driver 1.6W (typical) for 43Gbps application with SPI circuitry for DC controls on a single die. AC-coupled 100 differential input/DC- Each channel of driver has 100 differential AC- coupled 100 differential output coupled input and 100 differential DC-coupled Ultra-low inter-channel cross-talk output, and linear output voltage of 1.8Vppd Peaking adjustment functionality suitable for InP multi-level modulations. Analog control for gain and output voltage setting, and analog monitor for peak detector and gain control monitor Typical Applications OIF compliant SPI digital interface 400/600Gbps 16QAM/64QAM advanced integration multi-level modulation systems High bandwidth SFF optical integrated modules Block Diagram PK GC GC OA Pilot MC VDC VCCOUTxx VCCINxx 1, 2, 3, 4 1, 2, 3, 4 X=4 In4p Out4p X=3 Out4n In4n X=2 X=1 In3p Out3p Mode Out3n In3n Pilot Tone Gain Control Control Out2p In2p Peak Detector Vout DC Out2n Level In2n Monitor In1p Out1p Out1n In1n Peak Control ADC DAC Temp. Monitor SPI Control EN SER Peaking Temp RST MISO MOSI CS CLK VCC Figure 1: Block Diagram 2019 Integrated Device Technology, Inc. 1 March 29, 2019 GX76473 Short-Form Datasheet Corporate Headquarters Sales Tech Support 6024 Silver Creek Valley Road 1-800-345-7015 or www.IDT.com/go/support San Jose, CA 95138 408-284-8200 www.IDT.com Fax: 408-284-2775 www.IDT.com/go/sales DISCLAIMER Integrated Device Technology, Inc. (IDT) and its affiliated companies (herein referred to as IDT) reserve the right to modify the products and/or specifications described herein at any time, without notice, at IDT s sole discretion. Performance specifications and operating parameters of the described prod ucts are determined in an independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided without representat ion or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT s products for any particular purpose, an implied warranty of merchantability, or non-infringement of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT o r any third parties. IDT s products are not intended for use in applications involving extreme environmental conditions or in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expected to significantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT. Integrated Device Technology, IDT and the IDT logo are trademarks or registered trademarks of IDT and its subsidiaries in the United States and other countries. Other trademarks used herein are the property of IDT or their respective third party owners. For datasheet type definitions and a glossary of common terms, visit www.idt.com/go/glossary. All contents of this document are copyright of Integrated Device Technology, Inc. All rights reserved. 2019 Integrated Device Technology, Inc. 2 March 29, 2019