LMH1226 Reclocker Datasheet

LMH1226 Datasheet PDF, Equivalent


Part Number

LMH1226

Description

Dual-Output 12-G UHD Reclocker

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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LMH1226
SNLS534D – APRIL 2016 – REVISED JUNE 2018
LMH1226 Low-Power, Dual-Output 12-G UHD Reclocker
1 Features
1 Supports ST-2082-1(12G), ST-2081-1(6G), ST-
424(3G), ST-292(HD), and ST-259(SD)
• Supports SFF8431 (SFP+) for SMPTE 2022-5/6
• Compatible with DVB-ASI and AES10 (MADI)
• Reference-Less Reclocker Locks to SMPTE and
10 GbE Rates: 11.88 Gbps, 5.94 Gbps, 2.97
Gbps, 1.485 Gbps, or Divide-by-1.001 Sub-Rates,
270 Mbps, and 10.3125 Gbps
• Reference Free With Fast Lock Time
• Adaptive Board Trace Equalizer at Input 1 (IN1)
• Low Power: 214 mW (typical)
• Power-Save Mode: 16 mW
• Integrated 1:2 Fanout Outputs with De-Emphasis
• On-Chip Loop Filter and Eye Opening Monitor
• Powers from Single 2.5 V with On-Chip 1.8 V
Regulator
• Configurable by Control Pins, SPI, or SMBus
Interface
• 4-mm × 4-mm 24-Pin QFN Package
• Operating Temperature Range: –40°C to +85°C
2 Applications
• SMPTE Compatible Serial Digital Interface (SDI)
• UHDTV/4K/8K/HDTV/SDTV Video
• Broadcast Video Routers, Switchers, and Monitors
• Digital Video Processing and Editing
• 10 GbE - SDI Media Gateway
3 Description
The LMH1226 is a low-power, dual-output 12G UHD
reclocker. It supports SMPTE video rates up to 11.88
Gbps and 10 GbE video over IP, enabling UHD video
for 4K/8K applications. An adaptive board trace
equalizer at IN1 is SFF-8431 compatible and
supports both SMPTE and 10 GbE data rates.
The reclocker attenuates high frequency jitter and
provides the best signal integrity. High input jitter
tolerance of the reclocker improves timing margin.
The reclocker has built-in loop filter and operates
without the need of a precision input reference clock.
A non-disruptive eye monitor allows for real time
measurement of the serial data to simplify system
debug and accelerate board bring-up.
The integrated 1:2 fanout provides flexibility for
multiple video signals. The output drivers offer
programmable de-emphasis to compensate board
trace losses at its outputs. The typical power
consumption of LMH1226 is 214 mW. In the absence
of input signal, power is further reduced to 16 mW.
The LMH1226 is pin compatible with the LMH1219
(12G-UHD cable equalizer with integrated reclocker).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
LMH1226
QFN (24)
4.00 mm × 4.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Block Diagram
IN1±
2 Diff 100 Ÿ
Term
PCB
EQ
Reclocker
with
Data
Integrated
LoopFilter,
Clock
EyeMon
OUT_MUX
100-Ÿ
Driver
100-Ÿ
Driver
2
OUT0±
2
OUT1±
LDO
Power
Management
Control Logic
Serial
Interface
VDD_LDO Single 2.5 V
or
Dual 2.5 V and 1.8 V
Control Lock
Pins Indicator
SPI
or
SMBus
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.

LMH1226
LMH1226
SNLS534D – APRIL 2016 – REVISED JUNE 2018
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 5
6.1 Absolute Maximum Ratings ...................................... 5
6.2 ESD Ratings.............................................................. 5
6.3 Recommended Operating Conditions....................... 5
6.4 Thermal Information .................................................. 6
6.5 Electrical Characteristics........................................... 6
6.6 Recommended SMBus Interface AC Timing
Specifications .......................................................... 11
6.7 Serial Parallel Interface (SPI) AC Timing
Specifications ........................................................... 11
6.8 Typical Characteristics ............................................ 12
7 Detailed Description ............................................ 14
7.1 Overview ................................................................. 14
7.2 Functional Block Diagram ....................................... 14
7.3 Feature Description................................................. 15
7.4 Device Functional Modes........................................ 20
7.5 LMH1226 Register Map .......................................... 25
8 Application and Implementation ........................ 37
8.1 Application Information............................................ 37
8.2 Typical Application ................................................. 37
9 Power Supply Recommendations...................... 41
10 Layout................................................................... 41
10.1 PCB Layout Guidelines......................................... 41
10.2 Layout Example .................................................... 42
11 Device and Documentation Support ................. 43
11.1 Receiving Notification of Documentation Updates 43
11.2 Community Resources.......................................... 43
11.3 Trademarks ........................................................... 43
11.4 Electrostatic Discharge Caution ............................ 43
11.5 Glossary ................................................................ 43
12 Mechanical, Packaging, and Orderable
Information ........................................................... 43
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision C (October 2017) to Revision D
Page
• First public release of full production data sheet ................................................................................................................... 1
Changes from Revision B (February 2017) to Revision C
Page
• Added package drawing ...................................................................................................................................................... 43
Changes from Revision A (May 2016) to Revision B
Page
• Changed eq_en_bypass bit description from "Gain Stages 3 and 4" to "Gain Stages 2 and 3" ........................................ 27
• Changed bit location of IN1 Carrier Detect Power Down Control from Reg 0x13[5] to Reg 0x15[6] .................................. 27
Changes from Original (April 2016) to Revision A
Page
• Deleted min and max VOD_DE amplitude specification when VOD_DE = Level F ............................................................. 8
• Changed typical VOD_DE amplitude specifications for Levels F, R, and L .......................................................................... 8
• Changed DEM value and DEM register settings in Table 5 to match correct VOD_DE pin logic levels ............................. 18
• Added new row for VOD = 5, DEM = 5 setting in Table 10 ................................................................................................ 39
2 Submit Documentation Feedback
Product Folder Links: LMH1226
Copyright © 2016–2018, Texas Instruments Incorporated


Features Product Folder Order Now Technical Doc uments Tools & Software Support & Com munity LMH1226 SNLS534D – APRIL 2016 – REVISED JUNE 2018 LMH1226 Low-Powe r, Dual-Output 12-G UHD Reclocker 1 Fe atures •1 Supports ST-2082-1(12G), ST -2081-1(6G), ST424(3G), ST-292(HD), and ST-259(SD) • Supports SFF8431 (SFP+) for SMPTE 2022-5/6 • Compatible with DVB-ASI and AES10 (MADI) • Reference -Less Reclocker Locks to SMPTE and 10 G bE Rates: 11.88 Gbps, 5.94 Gbps, 2.97 G bps, 1.485 Gbps, or Divide-by-1.001 Sub -Rates, 270 Mbps, and 10.3125 Gbps • Reference Free With Fast Lock Time • Adaptive Board Trace Equalizer at Input 1 (IN1) • Low Power: 214 mW (typical ) • Power-Save Mode: 16 mW • Integr ated 1:2 Fanout Outputs with De-Emphasi s • On-Chip Loop Filter and Eye Openi ng Monitor • Powers from Single 2.5 V with On-Chip 1.8 V Regulator • Confi gurable by Control Pins, SPI, or SMBus Interface • 4-mm × 4-mm 24-Pin QFN P ackage • Operating Temperature Range: –40°C to +85°C 2 Applications • SMPTE Compatible Serial .
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