260 MHz, 16 x 8 Buffered Video Crosspoint Switch (Gain=2)

The AD8110 and AD8111 are high-speed 16 × 8 video crosspoint switch matrices. They offer a –3 dB signal bandwidth greater than 260 MHz, and channel switch times of less than 25 ns with 1% settling. With –78 dB of crosstalk and –97 dB isolation (@ 5 MHz), the AD8110/AD8111 are useful in many high-speed applications. The differential gain and differential phase of better than 0.02% and 0.02° respectively, along with 0.1 dB flatness out to 60 MHz, make the AD8110/AD8111 ideal for video signal switching.

The AD8110 and AD8111 include eight independent output buffers that can be placed into a high impedance state for paralleling crosspoint outputs so that off channels do not load the output bus. The AD8110 has a gain of +1, while the AD8111 offers a gain of +2. They operate on voltage supplies of ±5 V while consuming only 50 mA of idle current. The channel switching is performed via a serial digital control (which can accommodate “daisy chaining” of several devices) or via a parallel control, allowing updating of an individual output without reprogramming the entire array.

The AD8110/AD8111 is packaged in an 80-lead LQFP package and is available over the extended industrial temperature range of –40°C to +85°C.

Applications

* Routing of high-speed signals including:

* Composite video (NTSC, PAL, S, SECAM)

* Component video (YUV, RGB)

* Compressed video (MPEG, Wavelet)

* 3-level digital video (HDB3)

* 16 x 8 high-speed nonblocking switch arrays: G = +2

* Serial or parallel switch array control

* Serial data out allows “daisy chaining” of multiple crosspoints to create larger switch arrays

* Pin-compatible with AD8108/AD8109 8 x 8 switch arrays

* For a 16 x 16 array see AD8116

* Complete solution

* Buffered inputs

* Eight output amplifiers, G = +2

* Drives 150 V loads

* Excellent video performance

* 60 MHz 0.1 dB gain flatness

* 0.02% differential gain error (RL = 150 V)

* 0.028 differential phase error (RL = 150 V)

* Excellent AC performance

* 260 MHz –3 dB bandwidth

* 500 V/ms slew rate

* See data sheet for additional features