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HMC6545 Dataheets PDF



Part Number HMC6545
Manufacturers Analog Devices
Logo Analog Devices
Description 32 Gbps Dual Channel Advanced Linear Equalizer
Datasheet HMC6545 DatasheetHMC6545 Datasheet (PDF)

Data Sheet FEATURES Supports data rates from dc up to 32 Gbps Protocol and data rate agnostic Low latency (<170 ps) Integrated AGC with differential sensitivity of <50 mV Up to 20 dB programmable multiple unit interval input equalization Extended chromatic and polarization mode dispersion tolerance Programmable differential output amplitude control of up to 600 mV Single 3.3 V supply eliminating external regulators Wide temperature range from −40°C to +95°C 5 mm × 5 mm, 32-lead LFCSP package APP.

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Data Sheet FEATURES Supports data rates from dc up to 32 Gbps Protocol and data rate agnostic Low latency (<170 ps) Integrated AGC with differential sensitivity of <50 mV Up to 20 dB programmable multiple unit interval input equalization Extended chromatic and polarization mode dispersion tolerance Programmable differential output amplitude control of up to 600 mV Single 3.3 V supply eliminating external regulators Wide temperature range from −40°C to +95°C 5 mm × 5 mm, 32-lead LFCSP package APPLICATIONS 40 Gbps/100 Gbps DQPSK direct detection receivers Short and long reach CFP2 and QSFP+ modules CEI-28G MR and CEI-25G LR 100 GE line cards 16 Gbps and 32 Gbps Fibre Channel Infiniband 14 Gbps FDR and 28 Gbps EDR rates Signal conditioning for backplane and line cards Broadband test and measurement equipment GENERAL DESCRIPTION The HMC6545 is a low power, high performance, fully programmable, dual-channel, asynchronous advanced linear equalizer that operates at data rates of up to 32 Gbps. The HMC6545 is protocol and data rate agnostic, and it can operate on the transmit path to predistort a transmitted signal to invert channel distortion or on the receiver path to equalize the distorted and attenuated received signal. The HMC6545 is effective in dealing with chromatic and polarization mode dispersion and intersymbol interference (ISI) caused by a wide variety of transmission media (backplane or fiber) and channel lengths. The HMC6545 consists of an automatic gain control (AGC); dc offset correction circuitry; a 9-tap, 18 ps spaced feedforward equalizer (FFE); a summing node; and a linear programmable output driver. The input AGC linearly attenuates or amplifies the distorted input signal to generate a constant voltage at the 32 Gbps, Dual Channel, Advanced Linear Equalizer HMC6545 FUNCTIONAL BLOCK DIAGRAM 32 CAGC0 31 VCC0 30 COMPP0 29 COMPN0 28 RST 27 REGSEL1 26 REGSEL0 25 VCC0 GND 1 INP0 2 INN0 3 GND 4 GND 5 INP1 6 INN1 7 GND 8 HMC6545 AGC T/2 T/2 T/2 T/2 LPF AGC LPF c0 c1 c2 cn Σ SERIAL CONTROL REGISTERS T/2 T/2 T/2 T/2 d0 d1 d2 dn Σ Figure 1. 24 GND 23 OUTP0 22 OUTN0 21 GND 20 GND 19 OUTP1 18 OUTN1 17 GND PACKAGE BASE GND CAGC1 9 VCC1 10 COMPP1 11 COMPN1 12 SDA 13 SCL 14 SVCC 15 VCC1 16 13393-001 input of the FFE. The 9-tap FFE is programmed via 2-wire interface to generate wide range frequency responses that are precursor or postcursor in nature for compensating signal impairments. After FFE tap coefficients are summed at the summing node, the signal is received by a linear output driver. DC offset correction circuitry is controlled either automatically or manually via Forward Error Correction (FEC). All high speed differential inputs and outputs of the HMC6545 are current mode logic (CML) and terminated on chip with 50 Ω to the positive supply, 3.3 V, and can be dc-coupled or ac-coupled. The inputs and outputs of the HMC6545 can be operated either differentially or single-ended. The low power, high performance, and feature rich HMC6545 is packaged in a 5 mm × 5 mm, 32-lead LFCSP package. The device uses a single 3.3 V supply, eliminating external regulators. The HMC6545 operates over a −40°C to +95°C temperature range. Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2015–2016 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com HMC6545 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 DC Electrical Characteristics...................................................... 3 AC Electrical Characteristics ...................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Interface Schematics..............................


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