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  2. Analog Functions
  3. Filters
  4. Low-Pass Filters
  5. MAX22707


Features and Benefits

  • Precision Zero Crossing Detection
    • Integrated Zero Crossing Detection with ±1% Accuracy
    • High Frequency Noise Filter
    • 4th Order Low-Pass Filter (LPF)
    • 4th Order Band-Pass Filter (BPF)
  • Configurability for Ease of Use
    • User Selectable Filter Configuration (LPF or BPF)
    • Selectable Input Frequency
    • Power Saving Stand-By Mode
    • Programmable DC Averaging Timer
  • Saves PCB Space and Bill of Materials (BOM) Cost
    • No External Precision Filter Capacitor Required
    • 10-Pin µMAX package 3mm x 3mm

Product Details

The MAX22707 precision zero crossing detector provides a reliable and repeatable zero crossing detection signal based on an AC line input. The use of switched-capacitor filters helps to ensure minimal zero-crossing delay while tracking change in the input frequency and provides higher precision and a more inherently stable output than discrete solutions.

The MAX22707 features a low-power, precision analog filter based on the switched-capacitor technology designed for precision filtering of AC input noise. The device requires only a simple external input network preceding the AC inputs and no additional external components for the filters. The two different filter types can be selected by the Filter Selection pin (FS). The available filter types are the fourth order BPF and LPF. The DC averaging filter capacitor function is used for the latter.

The MAX22707 supports two standard line frequencies (50Hz and 60Hz) for both the filter types as well as rectified inputs in the case of LPF. If the BPF is selected, then the frequency selection Mode Control pin (MC) is used to select between 50Hz and 60Hz. If the LPF is selected, then the same pin is used to choose between 50/60Hz or 100/120Hz signal band (see Table 1). The Rectified Select pin (RS) is used to select between sine and rectified units (see Table 2). The MAX22707 is available in a compact 10-pin μMAX package and operates over the -40°C to +125°C temperature range.


  • AC Phase Detection
  • Flexible Zero Crossing Detection
  • Industrial Lighting Dimming

Product Categories

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Design Resources

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.View our quality and reliability program and certifications for more information.

Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
MAX22707AUB+ Material Declaration Reliability Data 10-MINI_SO-N/A
MAX22707AUB+T Material Declaration Reliability Data 10-MINI_SO-N/A
Wafer Fabrication Data

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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.