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Video filter amp packs short-to-battery protection

Posted: 23 Jul 2009 ?? ?Print Version ?Bookmark and Share

Keywords:video filter? amplifier? battery protection?

From Maxim Integrated Products comes the MAX9532 analog video filter amplifier that drives standard-definition (SD) video connections to an in-dash or rear-seat automotive display.

Designed specifically to withstand the harsh operating conditions in automotive applications, the MAX9532 integrates short-to-battery protection up to 18V on the video output, eliminating the need for an external series resistor. This device provides the highest degree of reliability for automotive safety applicationssuch as backup camerasand infotainment systems.

In addition, the MAX9532 employs Maxim's patented DirectDrive technology to operate from a single 3.3V supply while driving an industry-standard video signal without a DC offset. With DirectDrive circuitry, the MAX9532 automatically removes the DC offset, places the video black level at ground, and puts the sync-tip below ground. This innovative approach ensures a visibly flawless picture, while eliminating the large, costly external DC-blocking capacitors required by conventional solutions.

The MAX9532 delivers superb video quality to any in-dash display by providing the filtering needed to attenuate high-frequency artifacts and noise in the video signal. The integrated high-order filter features 1dB passband flatness up to 9.5MHz and 42dB attenuation at 27MHz, thereby ensuring video signal integrity in automotive designs.

Available in a 3mm x 3mm, 10-pin microMAX package, the MAX9532 operates from a single 2.7V to 3.6V supply and is fully specified over the -40C to +125C automotive temperature range. Prices start at $0.39 (1,000-up, FOB USA).

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