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LMH1297RTVR Datasheet(PDF) 1 Page - Texas Instruments |
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LMH1297RTVR Datasheet(HTML) 1 Page - Texas Instruments |
1 / 9 page Cable EQ PCB EQ M U X 100-Ÿ Driver SDI_IO± OUT0± IN0± SDI_OUT± CDR Power Management Serial Interface LDO Control TX_RX Cable Driver Copyright © 2016, Texas Instruments Incorporated Control Logic Cable Driver M U X Product Folder Order Now Technical Documents Tools & Software Support & Community 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. LMH1297 SNLS572 – MARCH 2017 LMH1297 12G UHD-SDI Bidirectional I/O With Integrated Reclocker 1 1 Features 1 • User-Configurable Adaptive Cable Equalizer or Cable Driver With Integrated Reclocker • Supports ST-2082-1 (12G), ST-2081-1 (6G), ST-424 (3G), ST-292 (HD), and ST-259 (SD) • Compatible With DVB-ASI and AES10 (MADI) • Integrated Reclocker Locks to SMPTE Rates of 11.88 Gbps, 5.94 Gbps, 2.97 Gbps, 1.485 Gbps, or Divide-by-1.001 Sub-Rates and 270 Mbps • On-Chip 75- Ω Termination and Return Loss Compensation Network • EQ (Equalizer) Mode: – Adaptive Cable Equalizer With Integrated Reclocker – 100-Ω Output Driver With De-Emphasis – Reclocked 75-Ω Loop-Through Output – EQ Mode Cable Reach (Belden 1694A, SDI_OUT Disabled): – 75 m at 11.88 Gbps – 120 m at 5.94 Gbps – 200 m at 2.97 Gbps – 300 m at 1.485 Gbps – 600 m at 270 Mbps • Cable Driver (CD) Mode: – Dual Differential Output Cable Drivers With Integrated Reclocker – Adaptive PCB Input Equalizer – Reclocked 100-Ω Loopback Output • Automatic Pre-Emphasis and Slew Rate Control on 75-Ω Outputs • Polarity Inversion on 75- Ω and 100-Ω Outputs • Automatic Power Save in Absence of Input Signal – Power Dissipation: 25 mW (Typical) • Power-Down Control Through ENABLE Pin • Single 2.5-V Supply – EQ Mode Power Dissipation: 275 mW (Typical) – CD Mode Power Dissipation: 315 mW (Typical) • Programmable Through Pins, SPI, or SMBus Interface • –40°C to +85°C Operating Temperature Range • 5-mm × 5-mm, 32-pin QFN Package 2 Applications • SMPTE Compatible Serial Digital Interface • UHDTV/4K/8K/HDTV/SDTV Video • IP Media Gateway • Digital Video Processing and Editing 3 Description The LMH1297 is a 12G UHD-SDI 75- Ω bidirectional I/O with integrated reclocker. This device can be configured either in input mode as an adaptive cable equalizer or in output mode as a dual cable driver, allowing system designers the flexibility to use a single BNC either as an input or output port, simplifying UHD video hardware designs. The integrated reclocker locks to all supported SMPTE data rates up to 11.88 Gbps in both modes. The bidirectional I/O has an on-chip 75- Ω termination and return loss compensation network that meets the stringent SMPTE return loss requirements. An additional 75- Ω driver output allows the LMH1297 to support a variety of system functions. In EQ (Equalizer) Mode, this second 75- Ω driver can be used as a loop-through output. In CD (Cable Driver) Mode, this 75- Ω driver can be used as a second fan- out cable driver. The host-side 100- Ω driver can also be used as a loop-back output in CD Mode for monitoring purposes. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LMH1297 QFN (32) 5.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Simplified Block Diagram |
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