Overview
The AD9883A, specifically the AD9883AKSTZ-140 model, is a highly integrated 8-bit, 140 MSPS monolithic analog interface designed by Analog Devices Inc. This component is optimized for capturing RGB graphics signals from personal computers and workstations. It features a 140 MSPS encode rate capability and a full-power analog bandwidth of 300 MHz, supporting resolutions up to SXGA (1280 x 1024 at 75 Hz). The device is implemented in a high-performance CMOS process and includes all necessary input buffering, signal DC restoration (clamping), offset and gain adjustment, pixel clock generation, and output data formatting. All controls are programmable via a 2-wire serial interface, making system design straightforward and less sensitive to environmental factors.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 8 | 8 | 8 | Bits |
| Maximum Conversion Rate | 140 | MSPS | ||
| Analog Bandwidth | 300 | MHz | ||
| Analog Input Range | 0.5 | 1.0 | V p-p | |
| PLL Clock Jitter at 110 MSPS | 500 | ps p-p | ||
| Power Supply Voltage (VD) | 3.0 | 3.3 | 3.6 | V |
| Power Dissipation (Typical) | 500 | mW | ||
| Operating Temperature Range | -40 | 85 | °C | |
| Package Type | 80-LQFP (14x14 mm) |
Key Features
- Industrial temperature range operation (-40°C to +85°C)
- 140 MSPS maximum conversion rate and 300 MHz analog bandwidth
- 0.5 V to 1.0 V analog input range
- Full sync processing, sync detect for hot plugging, and midscale clamping
- Power-down mode and low power consumption (typical 500 mW)
- Programmable gain, offset, and clamp control via a 2-wire serial interface
- Includes a 140 MHz triple ADC with internal 1.25 V reference and PLL
- 4:2:2 output format mode
- All digital inputs are 5 V tolerant
Applications
- RGB graphics processing
- LCD monitors and projectors
- Plasma display panels
- Scan converters
- Microdisplays
- Digital TV
- Computer interface for HDTV monitors
- Front end for high-performance video scan converters
Q & A
- What is the maximum conversion rate of the AD9883A?
The maximum conversion rate of the AD9883A is 140 MSPS.
- What is the analog bandwidth of the AD9883A?
The analog bandwidth of the AD9883A is 300 MHz.
- What is the operating temperature range of the AD9883A?
The operating temperature range of the AD9883A is -40°C to +85°C.
- What is the typical power dissipation of the AD9883A?
The typical power dissipation of the AD9883A is 500 mW.
- What type of package does the AD9883AKSTZ-140 come in?
The AD9883AKSTZ-140 comes in an 80-LQFP (14x14 mm) package.
- Is the AD9883A compatible with 5 V digital inputs?
Yes, all digital inputs on the AD9883A are 5 V tolerant.
- What kind of output format does the AD9883A support?
The AD9883A supports a 4:2:2 output format mode.
- How are the controls for gain, offset, and clamp adjusted on the AD9883A?
The controls for gain, offset, and clamp are adjusted via a 2-wire serial interface.
- What are some of the key applications of the AD9883A?
The AD9883A is used in RGB graphics processing, LCD monitors and projectors, plasma display panels, scan converters, microdisplays, and digital TV.
- Does the AD9883A include internal signal DC restoration (clamping)?
Yes, the AD9883A includes internal signal DC restoration (clamping).
