Overview
The AD9888KSZ-140, produced by Analog Devices Inc., is a complete 8-bit, 140 MSPS monolithic analog interface. It is optimized for capturing RGB graphics signals from personal computers and workstations. This device supports resolutions of up to 1600 × 1200 (UXGA) at 75 Hz, thanks to its 140 MSPS encode rate capability and full-power analog bandwidth of 500 MHz. The AD9888KSZ-140 is designed to be a fully integrated interface solution for flat panel displays, simplifying design and minimizing costs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Encode Rate | - | 140 | - | MSPS |
| Analog Bandwidth | - | 500 | - | MHz |
| Pixel Clock Output Frequency | 10 | - | 140 | MHz |
| PLL Clock Jitter | - | 450 | 700 | ps p-p |
| Power Supply Voltage | - | 3.3 | 3.6 | V |
| Operating Temperature Range | 0 | - | 70 | °C |
| Package Type | - | - | 128-Lead MQFP | - |
Key Features
- Triple 8-bit ADC with internal 1.25 V reference and phase-locked loop (PLL) to generate a pixel clock from HSYNC and COAST signals.
- Programmable gain, offset, and clamp controls.
- Full sync processing for composite sync and sync-on-green applications.
- Three-state CMOS outputs that can be powered from 2.5 V to 3.3 V.
- Low power consumption: less than 1 W typical at 140 MSPS.
- Fully programmable via a 2-wire serial port.
- Sampling phase adjustment and data, HSYNC, and clock output phase relationships maintenance.
- Option to disable the PLL and use an external clock input as the pixel clock.
Applications
- RGB graphics processing.
- LCD monitors and projectors.
- Plasma display panels.
- Scan converters.
- Microdisplays.
- Digital TV.
Q & A
- What is the primary function of the AD9888KSZ-140?
The AD9888KSZ-140 is designed to capture RGB graphics signals from personal computers and workstations, serving as a monolithic analog interface for flat panel displays.
- What is the maximum resolution supported by the AD9888KSZ-140?
The device supports resolutions up to 1600 × 1200 (UXGA) at 75 Hz.
- What is the encode rate capability of the AD9888KSZ-140?
The encode rate capability is 140 MSPS.
- How does the AD9888KSZ-140 generate the pixel clock?
The device generates the pixel clock using an internal phase-locked loop (PLL) from the HSYNC and COAST signals.
- What is the power consumption of the AD9888KSZ-140 at 140 MSPS?
The power consumption is less than 1 W typical at 140 MSPS.
- Can the AD9888KSZ-140 be programmed?
Yes, the device is fully programmable via a 2-wire serial port.
- What are the operating temperature and storage temperature ranges for the AD9888KSZ-140?
The operating temperature range is 0°C to 70°C, and the storage temperature range is -25°C to +85°C.
- What type of package does the AD9888KSZ-140 come in?
The device is provided in a 128-lead MQFP (Metric Quad Flat Package) surface-mount plastic package.
- Can the PLL be disabled in the AD9888KSZ-140?
Yes, the PLL can be disabled, and an external clock input can be used as the pixel clock.
- What are some of the key applications of the AD9888KSZ-140?
Key applications include RGB graphics processing, LCD monitors and projectors, plasma display panels, scan converters, microdisplays, and digital TV.
