Product category:
Analogue and Mixed Signal ICs
News Release from: Analog Devices | Subject: AD8117 and AD8118
Edited by the Electronicstalk Editorial
Team on 08 September 2006
Switches speed to route QXGA video
signals
Crosspoint switches operate above 500MHz, providing professional video designers with high levels of integration and bandwidth.
Analog Devices' 32 x 32 analogue crosspoint switches deliver an unmatched combination of integration and speed for high-resolution video applications The AD8117 and AD8118 achieve bandwidth of more than 500MHz - 65% higher than the nearest competitive 32 x 32 arrays-making them the industry's first single-chip 32 x 32 analogue crosspoint switches to achieve the high speeds required to route Quantum Extended Graphics Array (QXGA) video signals without degrading image quality
This article was originally published on Electronicstalk on 2 Jul 2008 at 8.00am (UK)
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QXGA is a high-resolution display standard (2048 x 1536 pixels) that enables very fine detail video images in LCD monitors.
Without these two new devices, professional video engineers had to use at least eight analogue crosspoint switches to achieve a comparable level of video switching performance at QXGA bandwidths.
The unprecedented combination of bandwidth and array size of the AD8117 and AD8118 are achieved through the use of the industry's first fully differential analogue crosspoint core architecture.
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This design offers customers greater flexibility by enabling any combination of differential or single-ended inputs and outputs.
Superior image fidelity is accomplished with bandwidth of 500MHz, slew rate of 1800V/us, gain flatness of 0.1dB out to 100MHz, and crosstalk of -40dB at 500MHz.
The AD8117 and AD8118 consume only 2.5mW per point - 50% less power per point than competing QXGA-capable analogue crosspoint solutions.
The low power consumption cuts system cost by reducing power supply requirements-the devices operate with a single +5V supply or dual +/-2.5V supplies-eliminating the need for external heatsinks.
In addition, the switches consume 200mA of standby current and 500mA of quiescent current.
The analogue crosspoint switches can be easily programmed and reprogrammed.
Channel switching is performed via a double-buffered, serial digital control-which can accommodate daisy chaining of several devices-or through a parallel control that allows updating of individual outputs without reprogramming the entire array.
The AD8117 and AD8118 are differentiated by output gain-one for the AD8117 and two for the AD8118-making them easier to use in back-terminated load applications.
The AD8117 and AD8118 analogue crosspoint switches are sampling now, with full production quantities available in the fourth-quarter of 2006.
Both switches are available in 304-ball thermally-enhanced BGA (ball grid array) packages and are priced at $295 in 100-piece quantities.
The AD8117 and AD8118 are fully specified over the industrial temperature range of -40 to +85C.
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