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  • HDMI Receiver compliant with HDMI 1.4 specification

  • Support HDTV format (YPbPr output) for 480p, 576p, 720p, 1080i and 1080P

  • On-chip Audio encoder which support 2 channel IIS/S/PDIF audio output

  • MCU embedded to handle the control logic

  • Support device boot up by automatically loading firmware from on-chip flash Boot ROM

  • Integrated EDID Buffer

  • Crystal Free architecture

  • TV connection detection supported

  • HDMI input detection supported

  • Support Auto Power Saving mode and low stand-by current

  • Support RGB to YCC conversion in ITU-R BT.601 and 709 color space

  • IIC slave interface and HDMI DDC interface are available for debug and firmware update.

  • Low power architecture

  • RoHS compliant and Halogen free package

  • Offered in 40-Pin QFN package (5 x 5 mm)


Chrontel’s CH7103B is a low-cost, low-power semiconductor device that consists of HDMI receiver, three separate 9-bit video Digital-to-Analog Converters (DACs), HDTV(YPbPr) encoder, and audio encoder, which can convert HDMI signals into HDTV outputs with IIS or SPDIF audio output.

The HDMI Receiver integrated is compliant with HDMI 1.4b. With sophisticated MCU and the on-chip flash, CH7103B supports auto-boot and EDID buffer. Leveraging the firmware auto loaded from the on-chip flash, CH7103B can support HDMI input detection, DAC connection detection and determine to enter into Power saving mode automatically.

Structure diagram

Application Desc

 PCB Layout and Design Guide for CH7103B HDMI to HDTV Converter, AN-B028 (Rev0.2)

  Refer to the AN-B037 for industrial products in detail

Technical Report



Input Interface  HDMI, DVI

Output Interface  YPbPr

Audio Interface  IIS, SPDIF Output

Other features   No

Package Type  QFN40


Part Number Package Type Operating Temperature Range Minimum Order Quantity

CH7103B-BF  40 QFN, Lead-freeCommercial : 0 to 70°C490/Tray

CH7103B-BFI  40 QFN, Lead-freeIndustrial : -40 to 85°C490/Tray




About Chrontel Overview Chrontel, headquartered in San Jose, California, is a privately-held company with over 130 employees worldwide. Incorporated in 1986, the company develops and markets mixed-signal integrated circuits for the PC, display and consumer mark...


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