Could you please let me know if my board needs impedance control? I'm designing a camera board using the IMX225LQR image sensor. After drawing schematic I contacted a company for PCB design and sample manufacture. But they asked me if I need an impedance controlled board which makes additional costs of $200~$300. I have no idea if I really this.
The system clock frequency of the image sensor will be between 27~72Mhz. And this camera board would not have any MCUs and RAMs. I would provide the system clock from outside of this board using PWM of STM32F407. The size of this board is 40mm x 50mm which means the line of trace shouldn't be so long.
this is the data sheet of the image sensor - http://www.ryida.com/upfile/IMX225LQR-C_E_TechnicalDatasheet_Rev0.2.pdf