AD8194 Buffered 2:1 TMDS Switch with Equalization

The AD8194 is a low cost quad 2:1 TMDS® switch for high speed HDMI™/DVI video applications. The AD8194 features equalized inputs, ideal for systems with long cable runs. Its primary function is to switch the high speed signals from one of two single-link (HDMI or DVI) sources to the single-link output. The AD8194 is a fully buffered switch solution with 50 Ω input and output terminations, providing full-swing output signal recovery and minimizing reflections for improved system signal integrity. ol { margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:25px; padding-top:0px; padding-right:0px; padding-bottom:10px; padding-left:0px;} li { padding-top:0px; padding-right:0px; padding-bottom:5px; padding-left:0px; margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px;} Data supports rates up to 2.25 Gbps, enabling greater than 1080p deep color (12-bit color) HDMI formats and greater than UXGA (1600 × 2300) DVI resolutions. Fully buffered inputs and outputs. Input cable equalizer enables use of long cables at the input. For a typical 24 AWG cable, the AD8194 compen-sates for more than 20 m at data rates up to 2.25 Gbps. Matched 50 Ω on-chip input and output terminations improve system signal integrity. Single-pin source select bit. Low added jitter.

The AD8194 is provided in a space-saving, 32-lead, LFCSP, surface-mount, RoHS-compliant, plastic package and is specified to operate over the −40°C to +85°C temperature range.

Product Highlights
  • Data supports rates up to 2.25 Gbps, enabling greater than 1080p deep color (12-bit color) HDMI formats and greater than UXGA (1600 × 2300) DVI resolutions.
  • Fully buffered inputs and outputs.
  • Input cable equalizer enables use of long cables at the input. For a typical 24 AWG cable, the AD8194 compen-sates for more than 20 m at data rates up to 2.25 Gbps.
  • Matched 50 Ω on-chip input and output terminations improve system signal integrity.
  • Single-pin source select bit.
  • Low added jitter.
Applications
  • Advanced television (HDTV) sets
  • Multiple input displays
  • Projectors
  • A/V receivers
  • Set-top boxes

Data Sheet, Rev. 0, 11/07

Features and Benefits
  • 2 inputs, 1 output HDMI/DVI high speed signal switch
  • Pin-to-pin compatible with the AD8193
  • Enables HDMI 1.3-compliant receiver
  • 4 TMDS channels per input/output
    Supports 250 Mbps to 2.25 Gbps data rates
    Supports 25 MHz to 225 MHz pixel clocks
    Fully buffered unidirectional inputs/outputs
    Equalized inputs for operation with long HDMI cables (20 m at 2.25 Gbps)
  • Matched 50 Ω input and output on-chip terminations
    Low added jitter
    Single-supply operation (3.3 V)
  • Standards compliant: HDMI receiver, DVI
  • 32-lead, 5 mm × 5 mm, RoHS-compliant LFCSP
  • Audio & Video Products
    Data Sheets
    Documentnote
    AD8194: Buffered 2:1 TMDS Switch with Equalization Data Sheet (Rev. 0)PDF 456 kB
    Order Information
    Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
    AD8194ACPZ Production32 ld LFCSP (5x5x.85mm) w/2.7exposed padOTH 490-40 to 85C2.131.42Y
    AD8194ACPZ-R7 Production32 ld LFCSP (5x5x.85mm) w/2.7exposed padREEL 1500-40 to 85C01.42Y
    Evaluation Boards
    Part NumberDescriptionPriceRoHS
    AD8194-EVALZEvaluation Board759Y
    AD8194: Buffered 2:1 TMDS Switch with Equalization Data Sheet (Rev. 0) ad8194