资 源 简 介
The MAX9505 filters and amplifies standard-definiTIonvideo signals. Maxim’s DirectDrive™ technology eliminateslarge output-coupling capacitors and sets thevideo black level to ground. An internal reconstrucTIonfilter smoothes the steps and reduces the spikes on thevideo signal from the video digital-to-analog converter(DAC). The input of the MAX9505 can be directly connectedto the output of a DAC. The MAX9505 providesa compact, integrated, and low-power soluTIon.The reconstrucTIon filter typically has 3dB attenuation at9MHz and 50dB attenuation at 27MHz, and ±1dB passbandflatness to 5.5MHz.Maxim’s DirectDrive uses an integrated charge pumpand a linear regulator to create a negative power supplyto drive the sync below ground. The charge pump injectsso little noise into the video output that the picture is visiblyflawless.The MAX9505 features an internal 1.7Ω analog switchthat interfaces with a 4-pole multimedia jack. Thisswitch allows one of the poles to be set as a videoinput, a video output, or a microphone input.The MAX9505 is offered in space-saving 16-pin QSOPand 16-pin TQFN packages and is specified over the-40°C to +85°C extended temperature range.ApplicationsMobile Phones/SmartphonesSpace-Constrained, Low-Power Audio/VideoPortable Devices
