- 1 input clock, 4 output clocks
- Square wave or sine wave input is supported
- 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 control output edges 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.BATRange = 2.5V to 5.5V
illustrate
The LMH2190 is a quad configurable clock tree driver for peripherals, mobile phones or other applications that provide a digital system clock. It provides a solution to problems such as clock fan-out or longer traces, pulling effects from different loads and frequencies, isolation buffering from noisy modules, and crosstalk isolation to protect the master clock's limited drive capacity. It has very low phase noise, which allows it to drive sensitive areas such as wireless LANs and Bluetooth modules.
The LMH2190 can clock up to 27 MHz and has an independent clock, each clock output on request, allowing peripherals to control the clock pins. It has an integrated LDO that provides 10 mA of external load current and can be used to supply ultra-low noise voltages to TCXO or other clock sources.
I 2 C serial interface, which can be used to override the default configuration of the device to optimize the LMH2190 application. These programmable functions include setting the clock and the polarity of the clock required input. In addition, the clock output and programmable output drive current are optimized for the connected load. EMI switching noise can be controlled by configuring output drivers and tilt settings.
The LMH2190 quad clock dealer offers a tiny 1.615mm 1.615mm 16 solder ball micro SMD package. Its small size and low supply current make it ideal for portable applications.
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- Mobile phone
- Pocket PC
- Portable devices
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