AD8112JSTZ

ANALOG DEVICES  AD8112JSTZ  芯片, 交叉开关, 音频/视频, 16X8, LQFP-100

Product Details

The AD8112 is a low cost, fully buffered crosspoint switch matrix that operates on ±12 V for audio applications and ±5 V for video applications. It offers a −3 dB signal bandwidth greater than 60 MHz and channel switch times of less than 60 ns with 0.1% settling for use in both analog and digital audio. The AD8112 operated at 20 kHz has a crosstalk performance of −83 dB and isolation of 90 dB. In addition, ground/power pins surround all inputs and outputs to provide extra shielding for operation in the most demanding audio routing applications. With a differential gain and differential phase better than 0.1% and 0.1°, respectively, and a 0.1 dB flatness output of up to 10 MHz, the AD8112 is suitable for many video applications.

The AD8112 includes eight independent output buffers that can be placed into a disabled state for paralleling crosspoint outputs so that off channel loading is minimized. The AD8112 has a gain of +2. It operates on voltage supplies of ±5 V or ±12 V while consuming only 34 mA or 31 mA of current, respectively. The channel switching is performed via a serial digital control which can accommodate the daisy chaining of several devices or via a parallel control, allowing updating of an individual output without reprogramming the entire array.

The AD8112 is packaged in a 100-lead LQFP and is available over the commercial temperature range of 0°C to 70°C.

**Applications**

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CCTV surveillance/DVR

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Analog/digital audio routers

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Video routers NTSC, PAL, S-Video, SECAM

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Multimedia systems

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Video conferencing

### Features and Benefits

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Low cost, 16 × 8, high speed, nonblocking switch array 

Pin-compatible 16 × 16 version available AD8113

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Serial or parallel programming of switch array

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Serial data out allows daisy chaining control of multiple 

16 × 8 arrays to create larger switch arrays

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Output disable allows connection of multiple devices without loading the output bus

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Complete solution 

Buffered inputs 

8 output amplifiers 

Operates on ±5 V or ±12 V supplies 

Low supply current of 54 mA

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Excellent audio performance VS = ±12 V 

±10 V output swing 

0.002% THD at 20 kHz maximum 20 V p-p RL = 600 Ω

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Excellent video performance VS = ±5 V 

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0.1 dB gain flatness of 10 MHz 

0.1% differential gain error RL = 1 kΩ 

0.1° differential phase error RL = 1 kΩ

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Excellent ac performance 

−3 dB bandwidth 60 MHz

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Low all-hostile crosstalk of −83 dB at 20 kHz

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Reset pin allows disabling of all outputs connected to a capacitor to ground provides power-on reset capability

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100-lead LQFP 14 mm × 14 mm