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序列數位介面 (SDI) IC

LMH1297

現行

具整合式時脈重整器的 12G UHD-SDI 雙向 I/O

立即訂購
產品規格表

LMH1297

現行
產品規格表 立即訂購

產品詳細資料

Function Cable driver, Cable driver with reclocker, Config I/O, Equalizer, Equalizer with reclocker Supply voltage (V) 2.5 Power consumption (mW) 300 Data rate (max) (Mbps) 11880 Control interface Pin, SMBus, SPI Operating temperature range (°C) -40 to 85
Function Cable driver, Cable driver with reclocker, Config I/O, Equalizer, Equalizer with reclocker Supply voltage (V) 2.5 Power consumption (mW) 300 Data rate (max) (Mbps) 11880 Control interface Pin, SMBus, SPI Operating temperature range (°C) -40 to 85
WQFN (RTV) 32 25 mm² 5 x 5
  • 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: 305 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
  • 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: 305 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

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 Cable Driver (CD) 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.

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 Cable Driver (CD) 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.
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類型 標題 日期
* Data sheet LMH1297 12G UHD-SDI Bidirectional I/O With Integrated Reclocker datasheet (Rev. E) PDF | HTML 2020年 10月 30日
Application note LMH121x 12G SDI PCB Layout Guidelines 2020年 2月 19日
EVM User's guide LMH1297EVM User's Guide (Rev. A) 2019年 8月 7日
Application note LMH12xx MADI Compatibility Application Note PDF | HTML 2018年 8月 30日
Application note Simplifying 4K SDI Video Design with a Bidrectional I/O 2017年 10月 31日
Technical article Three reasons why a bidirectional I/O will simplify your next 4K video design PDF | HTML 2017年 9月 6日

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開發板

LMH1297EVM — LMH1297 12-G 雙向 I/O 評估模組

LMH1297EVM 是評估模組 (EVM)，專為針對具有整合式時脈重整器的德州儀器 LMH1297 12-G UHD-SDI 雙向 I/O，評估其高速性能與功能而設計。您可使用此套件快速評估 LMH1297 支援的纜線長度和輸出訊號完整性。在 75-Ω 埠使用高性能邊緣安裝 BNC 連接器，以用於 I/O 和 SDI_OUT 訊號。100-Ω 差動輸入和輸出埠會路由至邊緣安裝 SMA 連接器，以協助連接實驗室設備或使用者系統，以進行性能評估。
使用指南: PDF
要求
模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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WQFN (RTV) 32 Ultra Librarian
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