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  • HDMI Receiver compliant with HDMI 1.4 specification
  • Support CVBS output in format of NTSC or PAL
  • 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
  • Integrated EDID Buffer
  • TV connection detection supported
  • HDMI input detection supported
  • 640x480 safe mode input supported only for NTSC format output
  • 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 CH7101B is a low-cost, low-power semiconductor device that consists of HDMI receiver, three separate 9-bit video Digital-to-Analog Converters (DACs) and audio encoder, which can convert HDMI signals into VGA outputs at a maximum conversion rate of 200 MHz  with IIS or SPDIF audio output.

The HDMI Receiver integrated is compliant with HDMI 1.4b. The DACs are based on current source architecture. And the VGA output meet VESA VSIS v1r2 clock jitter target. With sophisticated MCU and the on-chip flash, CH7101B supports auto-boot and EDID buffer. Leveraging the firmware auto loaded from the embedded flash, CH7101B 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 CH7101B HDMI to VGA Converter, AN-B026 (Rev0.5)

  Refer to the AN-B037 for industrial products in detail

Technical Report



Input Interface    HDMI, DVI

Output Interface   VGA, Analog RGB + Csync

Audio InterfaceIIS, SPDIF Output

Other features    No

Package Type    QFN40


Part Number  Package Type  Operating Temperature Range Minimum Order Quantity

CH7101B-BF  40 QFN, Lead-freeCommercial : -20 to 70°C490/Tray

CH7101B-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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