Product category:
Analogue and Mixed Signal ICs
News Release from: Intersil | Subject: ISL59118
Edited by the Electronicstalk Editorial
Team on 02 July 2007
Lowpass filter smoothes out video DAC
glitches
Power savings, small size and cost effective integration combine to make the ISL59118 video filter ideal for popular battery-operated handheld video applications.
The ISL59118 is a 9MHz dual-channel lowpass filter that is designed to eliminate video glitch noise associated with the use of video DACs The device uses nearly 50% less bias current than previous generation devices and stands out as the industry's lowest power dual channel video filter and clamp
This article was originally published on Electronicstalk on 8 Jan 2001 at 8.00am (UK)
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Video DACs can be found in many applications from set-top boxes to handheld devices, such as phones and MP3 players that play video.
Operating from just 4.5mA of bias current, the ISL59118 uses 10x less current than some competing products.
The device is housed in an ultraslim, micro-TQFN package and has a power-down state that consumes only 0.5uA when the amplifier is not in use.
Industry-leading power savings, small size and cost effective integration makes the ISL59118 video filter ideal for popular battery-operated handheld video applications.
The ISL59118 is ideal for systems with either two composite video signal inputs or outputs.
It can be used as an input anti-aliasing filter before an ADC to remove high-frequency non-image-forming noise from the signal before it is digitised.
As an output reconstruction filter, the ISL59118 can also be positioned after a DAC, where it smoothes out the digital output waveform that has been generated and removes glitches and noise.
DACs are often not able to provide sufficient gain and output current to drive the video signal down a cable, or into a double terminated video load - a problem the ISL59118 helps eliminate.
The ISL59118 can also be used in newer portable video applications where a video input is provided to record, as well as a video output to drive a cable to an external display.
The ISL59118 has a supply voltage range from 2.5 to 3.6V - ideal for very low power battery-operated devices such as portable media players, cellular phones, PDAs, digital cameras and video recorders.
Other applications include video amplifiers, cable set-top boxes and HDTVs.
For set-top boxes, this device removes the need for a redundant 5V supply rail.
The ISL59118 is available now in full production release and is housed in a 10-lead micro-TQFN package.
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