OV420 companion ASIC product brief lead free available in a lead-free package Compact Companion ASIC for Medical Imaging Applications The OV420 is a single chip solution for the OV6930based medical applications. The OV420 provides an integrated analog-to-digital data conversion using a built-in A/D converter (ADC), black level calibration (BLC), lens correction (LENC), defect pixel correction (DPC), AEC/AGC and digital video parallel output (DVP). As shown in figure 2-1, the OV420 supports a standard SCCB interface to communicate with the system and manipulate the above mentioned functions. During operation, the OV420 decodes the proprietary analog output from the OV6930 and digitizes it by an ADC. The generated digital signals will then be processed by a digital signal processor (DSP) and finally, standard DVP outputs are sent out. Find out more at www.ovt.com. OV420 Applications ¬ Medical Endoscopes ¬ Veterinarian Endoscopes ¬ Industrial Endoscopes Ordering Information Product Features ¬ OV00420-A36G (lead-free, 36-pin wCSP™) ¬ low cost, single-chip solution for the OV6930 medical sensor ¬ external system clock or independent crystal operation ¬ SCCB slave and master support ¬ auto gain/exposure control ¬ high bandwidth ADC, supporting up to 16MHz ¬ black level calibration (BLC) ¬ supports 10-bit digital parallel output ¬ low voltage, 1.8V (core), 3.3V (analog) and 3.3V (I/O) operation ¬ test pattern generator ¬ digital signal processor (DSP) ¬ RAW output with 10-bit parallel digital video port (DVP) Product Specifications ¬ power supply: - core: 1.8V ±5% - I/O: 3.3V ±10% - analog: 3.3V ±10% ¬ temperature range: -30°C to +70°C ¬ package dimensions: 3.17 mm x 3.17 mm ¬ power requirements: - active: 16 mA (typical) - standby: 65 µA (typical) Functional Block Diagram OV420 ADC OV6930 image sensor memory controller BLC DSP DVP SCCB master AEC/AGC system control SCCB serial interface SCCB slave PLL 4275 Burton Drive Santa Clara, CA 95054 USA Version 1.0, July, 2017 Tel: + 1 408 567 3000 Fax: + 1 408 567 3001 www.ovt.com OmniVision reserves the right to make changes to their products or to discontinue any product or service without further notice. OmniVision and the OmniVision logo are registered trademarks of OmniVision Technologies, Inc. wCSP is a trademark of OmniVision Technologies, Inc. All other trademarks are the property of their respective owners. customer medical system