Overview
The AD9888 is a complete 8-bit, 170 MSPS, monolithic analog interface designed to capture RGB graphics signals from personal computers and workstations. It is optimized for high-resolution display applications, supporting resolutions up to 1600 × 1200 (UXGA) at 75 Hz. This device is a fully integrated interface solution for flat panel displays, making it easier to design and minimize costs.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Maximum Conversion Rate | - | - | 170 | MSPS |
| Analog Bandwidth | - | - | 500 | MHz |
| Analog Input Range | 0.5 | - | 1.0 | V |
| PLL Clock Jitter at 170 MSPS | - | - | 450 | ps p-p |
| Power Supply Voltage | 3.0 | 3.3 | 3.6 | V |
| Total Power Dissipation | 850 | - | 1150 | mW |
| Junction-to-Case Thermal Resistance | - | - | 8.4 | °C/W |
| Junction-to-Ambient Thermal Resistance | - | - | 35 | °C/W |
Key Features
- 170 MSPS maximum conversion rate
- 500 MHz programmable analog bandwidth
- Internal 1.25 V reference phase-locked loop (PLL) to generate a pixel clock from HSYNC and COAST
- Midscale clamping and programmable gain, offset, and clamp controls
- Full sync processing for composite sync and sync-on-green applications
- Three-state CMOS outputs powered from 2.5 V to 3.3 V
- Pixel clock output frequencies range from 10 MHz to 170 MHz
- PLL clock jitter typically less than 450 ps p-p at 170 MSPS
- Fully programmable via a 2-wire serial port
Applications
The AD9888 is primarily used in high-resolution display applications, including:
- Capturing RGB graphics signals from personal computers and workstations
- Flat panel displays, such as LCD and plasma displays
- High-resolution video interfaces
- Graphics and video processing systems
Q & A
- What is the maximum conversion rate of the AD9888?
The maximum conversion rate of the AD9888 is 170 MSPS.
- What is the analog bandwidth of the AD9888?
The analog bandwidth of the AD9888 is 500 MHz.
- What is the typical PLL clock jitter at 170 MSPS?
The typical PLL clock jitter at 170 MSPS is less than 450 ps p-p.
- What power supply voltage does the AD9888 require?
The AD9888 requires a 3.3 V power supply voltage.
- What is the total power dissipation of the AD9888?
The total power dissipation of the AD9888 is between 850 mW and 1150 mW.
- What is the junction-to-case thermal resistance of the AD9888?
The junction-to-case thermal resistance of the AD9888 is 8.4 °C/W.
- What is the junction-to-ambient thermal resistance of the AD9888?
The junction-to-ambient thermal resistance of the AD9888 is 35 °C/W.
- Does the AD9888 support full sync processing?
Yes, the AD9888 supports full sync processing for composite sync and sync-on-green applications.
- How is the AD9888 programmable?
The AD9888 is fully programmable via a 2-wire serial port.
- What is the package type of the AD9888?
The AD9888 is provided in a 128-lead, MQFP, surface-mount, plastic package.
