LMH2190TM-38

• 1 input clock, 4 output clocks
• Supports square or sine wave inputs
• 1.8V square wave clock output
• Skewed clock output
• Independent clock requirements
• Clock input with high isolation of power supply noise
• High output-to-output isolation
• The output is driven to 50 pF
• EMI controls the output edge and EMI filtering
• Integrated 1.8V low-dropout regulator
• Low output noise voltage
• 10 mA load current
• I 2 Comet configuration up to 400 kHz (fast mode)
• Ultra-low standby current
• V BAT range = 2.5V to 5.5V

illustrate

LMH2190 is a four-channel configurable clock tree peripheral, mobile phone or other application that provides a driver for a digital system clock. It provides a solution to problems such as clock fan-out or longer traces, traction effects from different loads and frequencies, isolation buffering from noisy modules, and crosstalk isolation to protect the master clock from limited driving capacity. It has very low phase noise, which allows it to drive sensitives such as wireless LAN and Bluetooth modules.

LMH2190 can be clocked up to 27 MHz and has a separate clock for each clock output requirement, allowing peripherals to control the clock pins. It features an integrated LDO that provides 10 mA of external load current for an ultra-low noise voltage supply from a supplied TCXO or other clock source.

I 2 C serial interface, which can be used to override the default configuration of the device to optimize the LMH2190 of the application. These programmable functions include setting the clock and the polarity of the clock requiring input. In addition, the clock output, programmable output drive current is optimized for the connected load. EMI switching noise can be controlled by configuring the output driver and tilt settings.

LMH2190 quad clock distributors offer micro SMD packages with a tiny 1.615 mm 1.615 mm 16 bump. Its small size and low supply current make it ideal for portable applications.

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• Mobile phone
• handheld computer
• Portable device