AD8108 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD8108
Manufacturer

ADI
ChipWorker Part#

CW760526793
Description

325MHz, 8x8 Buffered Video Crosspoint Switch (Gain=1)
Documentation

Datasheet

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AD8108 Specifications

Attribute	Attribute Value

Part Number	AD8108
Manufacturer	ADI
ChipWorker Part#	CW760526793
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD8108/AD8109 are high speed 8 × 8 video crosspoint switch matrices. They offer a −3 dB signal bandwidth greater than 250 MHz and channel switch times of less than 25 ns with 1% settling. With −83 dB of crosstalk and −98 dB isolation (at 5 MHz), the AD8108/AD8109 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 AD8108/AD8109 ideal for video signal switching.
The AD8108 and AD8109 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 AD8108 has a gain of 1, while the AD8109 offers a gain of 2. They operate on voltage supplies of ±5 V while consuming only 45 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 AD8108/AD8109 is packaged in an 80-lead LQFP 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)
### Features and Benefits
8 × 8 high speed nonblocking switch arrays: G = 1
Serial or parallel programming of switch array
Serial data out allows daisy-chaining of multiple 8 × 8 arrays to create larger switch arrays
Output disable allows connection of multiple devices
Pin-compatible with AD8110/AD8111 16 × 8 switch arrays
For 16 × 16 arrays see AD8116
Complete solution
Buffered inputs
Eight output amplifiers: G = 1
Drives 150 Ω loads
Excellent video performance
60 MHz 0.1 dB gain flatness
0.02%/0.02° differential gain/differential phase error (RL = 150 Ω)
Excellent ac performance
−3 dB bandwidth: 325 MHz
Slew rate: 400 V/µs
Low power of 45 mA
Low all hostile crosstalk of −83 dB at 5 MHz
Reset pin allows disabling of all outputs (connected through a capacitor to ground provides power-on reset capability)
Excellent ESD rating: exceeds 4000 V human body model
80-lead LQFP (12 mm × 12 mm)

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