AD8108AST

PRODUCT DESCRIPTION

The AD8108 and AD8109 are high speed 8 × 8 video cross point 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 (@ 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.

FEATURES

8 x 8 High Speed Nonblocking Switch Arrays
AD8108: G = +1
AD8109: G = +2
Serial or Parallel Programming of Switch Array
Serial Data Out Allows “Daisy Chaining” of Multiple
8 x 8s to Create Larger Switch Arrays
Output Disable Allows Connection of Multiple Devices
Pin Compatible with AD8110/AD8111 16 x 8 Switch
Arrays
For 16 x 16 Arrays See AD8116
Complete Solution
Buffered Inputs
Eight Output Amplifiers,
AD8108 (G = +1),
AD8109 (G = +2)
Drives 150 V 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
AD8108 AD8109
–3 dB Bandwidth 325 MHz 250 MHz
Slew Rate 400 V/μs 480 V/μs
Low Power of 45 mA
Low All Hostile Crosstalk of –83 dB @ 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 TQFP Package (12 mm 3 12 mm)

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)