AD9985A
LAST TIME BUY110 MSPS/140 MSPS Analog Interface for Flat Panel Displays
- Part Models
- 3
- 1ku List Price
- price unavailable
Part Details
- Automated clamping level adjustment
- 140 MSPS maximum conversion rate
- 300 MHz analog bandwidth
- 0.5 V to 1.0 V analog input range
- 500 ps p-p PLL clock jitter at 110 MSPS
- 3.3 V power supply
- Full sync processing
- Sync detect for hot plugging
- Midscale clamping
- Power-down mode
- Low power: 500 mW typical
- 4:2:2 output format mode
The AD9985A is a complete 8-bit, 140 MSPS, monolithic analog interface optimized for capturing RGB graphics signals from personal computers and workstations. Its 140 MSPS encode rate capability and full power analog bandwidth of 300 MHz support resolutions up to SXGA (1280 × 1024 at 75 Hz).
The AD9985A includes a 140 MHz triple ADC with internal 1.25 V reference, a PLL, and programmable gain, offset, and clamp control. The user provides only a 3.3 V power supply, analog input, and horizontal sync (Hsync) and Coast signals. Three-state CMOS outputs can be powered from 2.5 V to 3.3 V.
The AD9985A’s on-chip PLL generates a pixel clock from the Hsync input. Pixel clock output frequencies range from 12 MHz to 140 MHz. PLL clock jitter is 500 ps p-p typical at 140 MSPS. When the COAST signal is presented, the PLL maintains its output frequency in the absence of Hsync. A sampling phase adjustment is provided. Data, Hsync, and clock output phase relationships are maintained.
The AD9985 also offers full sync processing for composite sync and sync-on-green applications, variable analog input bandwidth control, variable SOGIN bandwidth control and selectable input filtering.
A clamp signal is generated internally or can be provided by the user through the CLAMP input pin. This interface is fully programmable via a 2-wire serial interface.
Fabricated in an advanced CMOS process, the AD9985A is provided in a space-saving 80-lead LQFP surface-mount Pb-free plastic package, and is specified over the –40°C to +85°C temperature range.
APPLICATIONS
- RGB graphics processing
- LCD monitors and projectors
- Plasma display panels
- Scan converters
- Microdisplays
- Digital TVs
Documentation
Data Sheet 1
Technical Articles 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
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AD9985ABSTZ-110 | 80-Lead LQFP (14mm x 14mm) | ||
AD9985AKSTZ-110 | 80-Lead LQFP (14mm x 14mm) | ||
AD9985AKSTZ-140 | 80-Lead LQFP (14mm x 14mm) |
Part Models | Product Lifecycle | PCN |
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Feb 11, 2020 - 19_0236 Leadframe Format Change of Select QFP Products in Amkor Philippines |
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AD9985ABSTZ-110 | LAST TIME BUY | |
AD9985AKSTZ-110 | LAST TIME BUY | |
AD9985AKSTZ-140 | LAST TIME BUY | |
Jan 5, 2009 - 07_0077 Certification of STATSChipPAC Shanghai, China and AMKOR Philippines as additional sources for Assembly & Test of QFP Packages |
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AD9985ABSTZ-110 | LAST TIME BUY | |
AD9985AKSTZ-110 | LAST TIME BUY | |
AD9985AKSTZ-140 | LAST TIME BUY | |
Mar 10, 2010 - 10_0017 QFP Multigrade Laser Conversion |
||
AD9985AKSTZ-140 | LAST TIME BUY | |
Sep 25, 2023 - 23_0060 Obsolescence of listed Video Part |
||
AD9985ABSTZ-110 | LAST TIME BUY | |
AD9985AKSTZ-110 | LAST TIME BUY | |
AD9985AKSTZ-140 | LAST TIME BUY |
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
Parts | Product Life Cycle | Description |
---|---|---|
AD9984A | PRODUCTION | High Performance 10-Bit Display Interface |