LMH1226 Datasheet, PDF (1/9 Pages) Texas Instruments – Low Power Dual Output 12G UHD Reclocker

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LMH1226
SNLS517A – FEBRUARY 2016 – REVISED MARCH 2016
LMH1226 Low Power Dual Output 12G 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 x 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 mm x 4 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.