Small Size, Low Noise and High PSRR Power Reference Design for CMOS Image Sensors


Design files


The TIDA-00718 reference design provides a small size and high input voltage ripple rejection power supply to provide a stable and clean voltage source for CMOS image sensors. In this design a main power rail of 5 V from battery, Power over Ethernet (PoE) or DC adaptor is regulated down to three voltage rails: 3.3 V, 1.8 V and 1.2 V.

This solution can be utilized in consumer electronics and commercial applications as IP Network Cameras, Analog Security Camera, Video Doorbell, Internet webcam and many more.

  • Great transient response
  • Ripple free 1.8 V and 1.2 V voltage rails
  • Small form factor solution
  • Cost efficient solution with only a few compensation components
  • TIDA-00718 provides design guide and design files of the power management section.
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A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUAO8.PDF (1203 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Linear & low-dropout (LDO) regulators

LP5907250-mA, low-noise, high-PSRR, ultra-low-dropout voltage regulator with low IQ and enable

Data sheet: PDF | HTML
Buck converters (integrated switch)

LM32813.3-V, 1.2-A, 6-MHz Mini Step-Down DC-DC Converter

Data sheet: PDF | HTML

Technical documentation

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Type Title Date
* Design guide Small-Size, Low-Noise, and High-PSSR for CMOS Image Sensors Design Guide Sep. 22, 2015
Technical article Can an LDO produce better-quality images in small-sized camera applications? PDF | HTML Jul. 13, 2016

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