The SM5309A/B is a 3-channel video buffer with built-in 5th-order lowpass filters. The lowpass filter cutoff frequency range can adjust from 4MHz to 40MHz^*1 by 256 steps. The lowpass filter supports 480i to 1080i format, video signal equipment analog input/outputs. For video input systems, the device functions as a next-stage ADC system anti-aliasing filter. For video output systems, the filter reduces video DAC aliasing and external noise and can drive up to two 300Ω (SM5309A)/75Ω (SM5309B) load resistance. The cutoff frequency and signal input type can be controlled using an I²C BUS^*2, and the I²C slave address can be set by ADS (3-state input) to allow up to three SM5309A/B on the same bus.
*1: When the resistor connected to ISET (R_ISET) is 1.8kΩ.
*2:I²C BUS is a registered trademark of NXP B.V.