AD9985
110 MSPS/140 MSPS Analog Interface for Flat Panel Displays
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ADV7842
Dual HDMI 1.4 Fast Switching Receiver with 12-Bit, 170 MHz Video and Graphics Digitizer and 3D Comb Filter Decoder
Overview
Features and Benefits
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Product Details
The AD9985 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 AD9985 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 Hsync and COAST signals. Three-state CMOS outputs may be powered from 2.5 V to 3.3 V.
The AD9985’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.
A clamp signal is generated internally or may 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 AD9985 is provided in a space-saving 80-lead LQFP surface-mount 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 TV
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Not Recommended for New Designs
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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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| AD9985BSTZ-110 | Material Declaration | Reliability Data | 80-Lead LQFP (14mm x 14mm) | |
| AD9985KSTZ-110 | Material Declaration | Reliability Data | 80-Lead LQFP (14mm x 14mm) | |
| Wafer Fabrication Data |
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