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AD9984A:  High Performance 10-Bit Display Interface

Product Details

The AD9984A is a complete 10-bit, 170 MSPS, monolithic analog interface optimized for capturing YPbPr video and RGB graphics signals. Its 170 MSPS encode rate capability and full power analog bandwidth of 300 MHz support all HDTV video modes up to 1080p, as well as graphics resolutions up to UXGA (1600 × 1200 at 60 Hz).

The AD9984A includes a 170 MHz triple ADC with an internal reference, a PLL, and programmable gain, offset, and clamp control. The user provides only a 1.8 V power supply and an analog input. Three-state CMOS outputs can be powered from 1.8 V to 3.3 V.

The AD9984A on-chip PLL generates a sample clock from the tri-level sync (for YPbPr video) or the horizontal sync (for RGB graphics). Sample clock output frequencies range from 10 MHz to 170 MHz. With internal coast generation, the PLL maintains its output frequency in the absence of a sync input. A 32-step sampling clock phase adjustment is provided. Output data, sync, and clock phase relationships are maintained.

The auto-offset feature can be enabled to automatically restore the signal reference levels and calibrate out any offset differences between the three channels. The auto channel-to-channel gain-matching feature can be enabled to minimize any gain mismatches between the three channels.

The AD9984A also offers full sync processing for composite sync and sync-on-green applications. A clamp signal is generated internally or can be provided by the user through the CLAMP input pin.

Fabricated in an advanced CMOS process, the AD9984A is provided in a space-saving, Pb-free, 80-lead low profile quad flat package (LQFP) or 64-lead lead frame chip scale package (LFCSP) and is specified over the 0°C to 70°C temperature range.


  • Advanced TVs
  • Plasma display panels
  • HDTV
  • RGB graphics processing
  • LCD monitors and projectors
  • Scan converters


  • 10-bit, analog-to-digital converters
  • 170 MSPS maximum conversion rate
  • Low PLL clock jitter at 170 MSPS
  • Automatic gain matching
  • Automated offset adjustment
  • 2:1 input mux
  • Power-down via dedicated pin or serial register
  • 4:4:4, 4:2:2, and DDR output format modes
  • Variable output drive strength
  • Odd/even field detection
  • External clock input
  • Regenerated Hsync output

Functional Block Diagram for AD9984A

AdvantivAdditional product choices for Advanced TV applications are available on the Advantiv® site.


Title Content Type File Type
AD9984A: High Performance 10-Bit Display Interface Data Sheet (Rev 0, 07/2007) (pdf, 838 kB) Data Sheets PDF
Analysis of Common Failures of HDMI CT
By Brett Li and Lie Dou, ATV Product Line, Analog Devices
(Digital TV DesignLine, 4/2/2008)
Technical Articles HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

AD9984A Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
AD9984AKCPZ-140 Status: Production 64 ld LFCSP (9x9mm, 4.70mm exposed pad) 64 Comm. Tray, 260 $6.98 $5.94 Y  Material Info Notify Me Purchase Sample
AD9984AKCPZ-170 Status: Production 64 ld LFCSP (9x9mm, 4.70mm exposed pad) 64 Comm. Tray, 260 $8.50 $7.23 Y  Material Info Notify Me Purchase Sample
AD9984AKSTZ-140 Status: Production 80 ld LQFP (14x14mm) 80 Comm. Tray, 90 $6.98 $5.94 Y  Material Info PCN Purchase Sample
AD9984AKSTZ-170 Status: Production 80 ld LQFP (14x14mm) 80 Comm. Tray, 90 $8.50 $7.23 Y  Material Info PCN Purchase Sample
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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