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ADA4431-1:  Ultralow Power SD Video Filter with Load Detection

Product Details

The 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.

  • Portable media players
  • Portable gaming consoles
  • Cell phones
  • Digital still cameras
  • Portable DVD players
  • Portable video cameras


  • 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

Functional Block Diagram for ADA4431-1


Title Content Type File Type
ADA4431-1: Ultralow Power SD Video Filter with Load Detection Data Sheet (Rev 0, 08/2007) (pdf, 450 kB) Data Sheets PDF
Analog Devices in Advanced TV Overview HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

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Price, packaging, availability

ADA4431-1 Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADA4431-1YCPZ-R2 Status: Production 16 ld LFCSP 3x3x.55(1.70 EP) 16 Ind Reel, 250 $1.00 $1.00 Y  Material Info Notify Me Purchase
ADA4431-1YCPZ-R7 Status: Production 16 ld LFCSP 3x3x.55(1.70 EP) 16 Ind Reel, 1500 - $0.50 Y  Material Info Notify Me Purchase Sample
ADA4431-1YCPZ-RL Status: Production 16 ld LFCSP 3x3x.55(1.70 EP) 16 Ind Reel, 5000 - $0.50 Y  Material Info Notify Me Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

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