ADI AD8114AST

The AD8114/AD8115 are high speed, 16×16 video crosspoint switch matrices. They offer a -3 dB signal bandwidth greater than 200 MHz and channel switch times of less than 50 ns with 1% settling. With -70 dB of crosstalk and -98 dB isolation (at 5 MHz), the AD8114/AD8115 are useful in many high speed applications. The differential gain and differential phase of better than 0.05% and 0.05°, respectively, along with a 0.1 dB flatness out to 25 MHz while driving a 75 Ω back-terminated load, make the AD8114/ AD8115 ideal for all types of signal switching. The AD8114/AD8115 include 16 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 AD8114 has a gain of 1, while the AD8115 offers a gain of 2. They operate on voltage supplies of ±5 V while consuming only 70 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 AD8114/AD8115 is packaged in a 100-lead LQFP and is available over the extended industrial temperature range of -40°C to +85°C.

• 16×16 high speed nonblocking switch arrays AD8114; G̅ = 7 AD8115; G = 2
• Serial or parallel programming of switch array
• Serial data out allows daisy-chaining of multiple 16×16 arrays to create larger switch arrays
• High impedance output disable allows connection of multiple devices without loading the output bus
• Complete solution Buffered inputs Programmable high impedance outputs 16 output amplifiers, AD8114 (G = 7), AD8115 (G = 2) Drives 150 Ω loads
• Excellent video performance 250 MHz, 0.1 dB gain flatness 0.05%/0.05° differential gain/differential phase error (R̅L = 150 Ω)
• Excellent ac performance −3 dB bandwidth: 225 MHz Slew rate: 375 V/μS
• Low power of 700 mW (2.75 mW per point)
• Low all hostile crosstalk of −70 dB at 5 MHz
• Reset pin allows disabling of all outputs (connected through a capacitor to ground provides power-on reset capability)
• 100-lead LQFP (14 mm×14 mm)

• Routing of high speed signals
• Video (NTSC, PAL, S, SECAM, YUV, RGB)
• Compressed video (MPEG, wavelet)
• 3-level digital video (HDB3)
• Data communications
• Telecommunications