Features and Benefits
- Third-order, low-pass video filter
1 dB flatness out to 6 MHz
27 dB rejection at 27 MHz
- Low quiescent current:
4.7 mA typical
- Low power-down current:
24 μA typical
- Load detection capability
- SAG correction
Allows use of smaller capacitors in ac-coupled outputs
- Low supply voltage: 2.5 V to 3.6 V
- Charge pump
Creates a negative voltage from single positive supply
Allows capless output coupling with no dc offset
- Rail-to-rail output
- High input-to-output isolation in
disabled state 89 dB @ 1 MHz
- Small package
3 mm × 3 mm LFCSP
Low 0.55 mm package height
- Wide operating temperature range:
−40°C to +85°C
Product DetailsThe ADA4431-1 is a fully integrated video reconstruction filter that combines excellent video specifications with low power consumption, making it ideal for portable video filtering applications. The ADA4431-1 is able to detect whether a video load is present at the output, powering down the device when the load is disconnected.
The ADA4431-1 operates on single supplies as low as 2.5 V while providing the dynamic range required by the most demanding video systems. The on-board charge pump provides a virtual negative supply, allowing the video signal to be dc-coupled and the black level to be set to ground, while the sync passes cleanly at 300 mV below ground.
When operating with the charge pump off, the ADA4431-1 provides a dc offset to keep the sync tip approximately 100 mV above ground. In addition, the part features SAG correction, which permits the use of smaller capacitors in applications with ac-coupled outputs.
The ADA4431-1 is packaged in a low profile 16-lead LFCSP and operates in the industrial temperature range of −40°C to +85°C.Applications
- Portable media players
- Portable gaming consoles
- Cell phones
- Digital still cameras
- Portable DVD players
- Portable video cameras
Product Lifecycle Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
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.
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