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

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 ...More

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

Product Description

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.

Applications

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

    • Data Sheet, Rev. 0, 8/07

    RESOURCES & TOOLS

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    • 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
    • Package: 24-ld LFCSP
    • Resolution: 480i
    • Standards: SD
    • Supply Current : 4.7mA
    • Pos Supply: +2.5V to +3.6V
    • Variable Gain: 2x
    • Operating Temp Range: -40 to +85

    Functional Block Diagram for ADA4431-1

    Similar Products

    arrow View Full Interactive Product Selection Table
    Part# Standards Resolution Variable Gain 2:1 Input MUX Pos Supply Supply Current Operating Temp Range Package Price* (1000-4999)
    ADA4410-6 CV, RGB, SD, Y/C, YPbPr, YUV 1080i, 720p 2x, 4x X +4.5V to +12V 92mA -40 to +85 32-ld LFCSP $2.52
    ADA4411-3 RGB, SD, Y/C, YPbPr, YUV 1080i, 720p 2x, 4x X +4.5V to +12V 60mA -40 to +85 24-ld QSSOP $1.91
    ADA4412-3 RGB, SD, Y/C, YPbPr, YUV 1080i, 720p 2x - +4.5V to +12V 56mA -40 to +85 20-ld QSSOP $1.61
    ADA4417-3 RGB, YPbPr, YUV 1080i, 720p 2x - +3.3V to +5V 24mA -40 to +85 10-ld MSOP $0.80
    ADA4420-6 RGB, Y/C, YPbPr - - - +4.75V to +5.25V 36mA - 16-ld QSOP $0.69
    ADA4430-1 SD, Y/C 480i 2x - +2.5V to +6V 1.85mA -40 to +125 6-ld SC70 $0.50
    ADA4431-1 SD 480i 2x - +2.5V to +3.6V 4.7mA -40 to +85 24-ld LFCSP $0.50
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    *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.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.