AD8114: Low Cost 225 MHz 16 x 16 Crosspoint Switch, G=+1
The AD8114/AD81151 are high speed 16 x 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 –90 dB isolation (@ 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 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 100-lead LQFP package and is available over the extended industrial temperature range of –40°C to +85°C.
An evaluation board is available for this product and may be ordered using the following product number: AD8114-EVAL and AD8115-EVAL. Schematic and layout for this evaluation board is contained in the product datasheet.
AD8114 特点
- 16 x 16 high speed nonblocking switch arrays
AD8114; G = 1
AD8115; G = 2 - Serial or parallel programming of switch array
- Serial data out allows daisy-chaining of multiple 16 x 16 arrays to create larger switch arrays
- High impedance output disable allows connection of multiple devices without loading the output bus
- For smaller arrays see the AD8108/AD8109 (8 x 8) or AD8110/AD8111 (16 x 8) switch arrays
- Complete solution
Buffered inputs
Programmable high impedance outputs
16 output amplifiers, AD8114 (G = 1), AD8115 (G = 2)
Drives 150 Ω loads - Excellent video performance
25 MHz, 0.1 dB gain flatness
0.05%/0.05° differential gain/differential phase error (RL = 150 Ω) - Excellent ac performance
-3 dB bandwidth: 225 MHz
Slew rate: 375/Vµs - Low power of 700 mW (2.75 mW per point)
- Low all hostile crosstalk of -70 dB @ 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 x 14 mm)
AD8114 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD8114-EVAL | 量产 | Evaluation Boards | - | 商业 |
| AD8114AST | 量产 | 100 ld LQFP | 100 | 工业 |
| AD8114ASTZ | 量产 | 100 ld LQFP | 100 | 工业 |