The AD8117/AD8118 are high speed, 32 × 32 analog crosspoint switch matrices. They offer 600 MHz bandwidth and slew rate of 1800 V/µs for high resolution computer graphics (RGB) signal switching. With less than -70 dB of crosstalk and -90 dB isolation (@ 5 MHz), the AD8117/AD8118 are useful in many high speed applications. The 0.1 dB flatness greater than 50 MHz makes the AD8117/AD8118 ideal for composite video switching.
The AD8117/AD8118 include 32 independent output buffers that can be placed into a high impedance state for paralleling crosspoint outputs so that off-channels present minimal loading to an output bus. The AD8117 has a differential gain of +1, while the AD8118 has a differential gain of +2 for ease of use in back-terminated load applications. They operate as fully differential devices or can be configured for single-ended operation. Either a single +5 V supply or dual ±2.5 V supplies can be used, while consuming only 500 mA of idle current with all outputs enabled. The channel switching is performed via a double-buffered, serial digital control (which can accommodate daisy chaining of several devices), or via a parallel control, allowing updating of an individual output without reprogram-ming the entire array.
- High channel count, 32 × 32 high speed, non-blocking switch array
- Differential G = +1 (AD8117) or G = +2 (AD8118)
- Flexible power supplies Single +5 V supply, or dual ±25 V supplies
- High impedance output disable allows connection of multiple devices with minimal loading on output bus
- Differential or single-ended operation
- Serial or parallel programming of switch array
