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1FEATURES

2? 32 Inputs and 16 Outputs

? AC-Coupled Inputs with Integrated DC Restore

Clamp

? Individually Addressable Outputs

? Pin-Selectable Output Buffer Gain (1 V/V or 2

V/V)

? –3 dB Bandwidth = 66 MHz

? DG = 0.05%, DP = 0.05° @ RL = 150Ω, AV = 2V/V

? ?70 dB Off-Isolation @ 6 MHz

? Individual Input and Output Shutdown Modes

? Device Power Down Mode

? Video Detection with Programmable Threshold

(8 Levels)

? Sync Detection with Pin-Configurable

Threshold

? 100 kHz I2C Interface with 2-Bit Configurable

Slave Address

? Single 5V Supply Operation

? Extra Video Output (VOUT_16) for External

Video Sync Separator

APPLICATIONS

? CCTV Security and Surveillance Systems

? Analog Video Routing

DESCRIPTION

The LMH6586 is a non-blocking analog video crosspoint switch designed for routing standard

NTSC or PAL composite video signals. The non-

blocking architecture allows any of the 32 inputs to be

connected to any of the 16 outputs, including any

input that is already connected. Each input has an

integrated DC restore clamp for biasing of the AC-

coupled video signal. The output buffers have a

common selectable gain setting of 1X or 2X and can

drive loads of 150Ω.

The LMH6586 features two types of input signal

detection for convenient monitoring of activity on any

input channel. Video detection can be configured to

indicate when either “presence of video” or “l(fā)oss of

video” is detected across the video threshold level

controlled by a programmable register. Additionally,

sync detection can be configured to indicate when

“l(fā)oss of sync” is detected across the sync threshold

level controlled by a DC voltage input.

The switch configuration and other parameters are

programmable via the I2C bus interface. The slave

device address is configurable via two external pins

allowing up to four LMH6586 devices, each with a

unique address, on a common I2C bus. This helps

facilitate expansion of the crosspoint matrix array size

(e.g. 64 x 16). The LMH6586 operates from a

common single 5V supply for its analog sections as

well as its control logic and I2C interface. The

LMH6586 is offered in a space-saving 80-pin TQFP.