AD8108/AD8109 are 8x8 high-speed non-blocking switch arrays with buffered inputs and eight output amplifiers capable of driving 150 ohm loads. AD8108 has a gain of 1, while AD8109 has a gain of 2.
The AD8108 and AD8109 are high‑speed 8 × 8 video crosspoint switch matrices offering low crosstalk, selectable gain (G = 1 for AD8108, G = 2 for AD8109), and output disable capability. They support serial or parallel programming, daisy‑chaining, and operate from a +5 V supply with low idle current.
The document lists detailed electrical specifications, timing characteristics, absolute maximum ratings, and recommended PCB layout guidelines, and includes application examples such as routing composite, component, and compressed video signals.
| 3 dB Bandwidth | 325 MHz (AD8108), 250 MHz (AD8109) |
|---|---|
| Slew Rate | 400 V/µs (AD8108), 480 V/µs (AD8109) |
| Supply Current (idle) | 45 mA |
| Output Current | 20 mA (AD8108), 40 mA (AD8109) |
| Operating Temperature Range | -40 °C to +85 °C |
| Package | 80‑lead LQFP (12 mm × 12 mm) |
| Crosstalk | -83 dB @5 MHz |
| Gain | G = 1 (AD8108), G = 2 (AD8109) |
The AD8108 has a gain of 1, while the AD8109 provides a gain of 2.
Both devices operate from a supply voltage of +4.5 V to +5.5 V.
The devices are rated for operation from –40 °C up to +85 °C.