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ADV7521NK:  Low-Power HDMI®/DVI Transmitter with Consumer Electronic Control (CEC)

Product Details

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  • ADV7511 225 MHz, High Performance HDMI® Transmitter with ARC
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  • ADV7524A Low Power HDMI®/DVI Transmitter with Consumer Electronic Control (CEC)

The ADV7521NK is an 80 MHz, high definition multimedia interface (HDMI®) v.1.3 transmitter. It supports HDTV formats up to 1080i and 720p, and computer graphic resolutions up to XGA (1024 × 768 @ 75 Hz).

The ADV7521NK supports both S/PDIF and 2-channel I2S audio. Its high fidelity 2-channel I2S can transmit stereo at up to 192 kHz sampling rate. The S/PDIF can carry stereo LPCM audio or compressed audio including Dolby® Digital and DTS®.

The ADV7521NK helps to reduce system design complexity and cost by incorporating such features as an I2C master for EDID reading, a single 1.8V power supply and 5 V tolerance on I2C and hot plug detect pins.

Fabricated in an advanced CMOS process, the ADV7521NK is available in a space saving, 49-ball, WLCSP surface-mount package. This package is RoHS compliant and specified to operate from −25°C to +85°C.


  • Digital video cameras
  • Digital still cameras
  • Personal media players
  • Cellular handsets


  • General
    Low-power HDMI™/DVI transmitter ideal for portable applications
    CEC controller and buffer reduces system overhead
    Compatible with HDMI v1.3
    (supporting x.v.Color™), DVI v1.0
    Single 1.8V power supply
  • Digital video
    80 MHz operation supports all video resolutions from 480i to 1080i
    Prog two-way CSC
    Supports RGB, YCbCr, DDR
    Supports ITU656 based embedded syncs
    Auto input video format timing detection
  • Digital audio
    Supports standard S/PDIF for stereo LPCM or compressed audio up to 192 kHz
    2-channel uncompressed LPCM I2S audio up to 192 kHz
  • Special features for easy system design
    On-chip MPU w/ I2C® master performs EDID reading operations
    5 V tolerant I2C & HPD I/Os-no extra device needed
    No audio master clock needed to support S/PDIF & I2S

Functional Block Diagram for ADV7521NK

Advantiv Complete documentation (including detailed hardware and software guides) and software driver reference code are available upon completion of a Non-Disclosure Agreement (NDA) (pdf, 27,604 bytes) and a Software Licensing Agreement (pdf, 32,123 bytes). Submit your completed forms by attaching within the online customer project detail form. Additional support is available from your Analog Devices local sales. Information about obtaining licenses required for using HDMI and HDCP technologies is available from and

Additional product choices for Advanced TV applications are available on the Advantiv® site.


Title Content Type File Type
AN-1050: A Method for Compressing I2C Scripts for the ADV74xx/ADV75xx/ADV76xx/ADV78xx  (pdf, 111 kB) Application Notes PDF
ADV7521NK: Industry's Smallest HDMI Transmitter
This video describes how the ADV7521NK with the smallest size of any HDMI transmitter in the industry, lowest power consumption and an integrated CEC controller is an excellent choice for portable applications such as HD camcorders, digital still cameras and portable media players.
Videos HTML
HDMI Solutions for Portable Devices
ADI's integrated, ultra low-power HDMI transmitters are shown in portable applications, such as digital still cameras and digital video cameras. The HDMI transmitters support CEC funtionality for control of home theater equipment.
Videos HTML
Analysis of Common Failures of HDMI CT
By Brett Li and Lie Dou, ATV Product Line, Analog Devices
(Digital TV DesignLine, 4/2/2008)
Technical Articles HTML
ADV7521NK Low Power, 80 MHz HDMI Transmitter with CEC Support  (pdf, 886 kB) Overview PDF
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

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Price, packaging, availability

ADV7521NK Model Options
Model Package Pins Temp.
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
ADV7521NKBCBZRL-80 Status: Production CHIPS W/SOLDER BUMPS/WLCSP 49 Comm. Reel, 5000 $3.46 $2.94 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.

ADV7521NK Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
EVAL-ADV7521NK-CKZ Status: Obsolete Evaluation Board - Yes - Contact ADI

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.

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