LMH2191 Series

Dual-channel 52-MHz clock tree driver

Catalog

Dual-channel 52-MHz clock tree driver

Part	Secondary Attributes	Type	Primary Attributes	Utilized IC / Part	Supplied Contents	Function	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Min]	Voltage - Supply [Max]	Ratio - Input:Output [custom]	Frequency - Max [Max]	Number of Circuits	Output	Package / Case	Supplier Device Package	Input	Mounting Type
Texas Instruments LMH2191TMEVAL/NOPB	Independent Clock Requests Inverted Clock Outputs	Timing	One Input Clock Two Output Clocks	LMH2191	Board(s)	Clock Buffer Driver Receiver Translator
Texas Instruments LMH2191TMX/NOPB		Fanout Buffer (Distribution)					85 °C	-40 °C	2.5 V	5.5 V	1:2	52 MHz	1	Clock	8-WFBGA DSBGA	8-DSBGA	Clock	Surface Mount
Texas Instruments LMH2191TME/NOPB		Fanout Buffer (Distribution)					85 °C	-40 °C	2.5 V	5.5 V	1:2	52 MHz	1	Clock	8-WFBGA DSBGA	8-DSBGA	Clock	Surface Mount

Catalog

Dual-channel 52-MHz clock tree driver

Key Features

• One Input Clock, Two Output Clocks1.8V Square Wave Clock OutputsInverted Clock OutputsIndependent Clock RequestsHigh Isolation of Supply Noise to Clock InputHigh Output-to-Output IsolationIntegrated 1.8V Low-Dropout RegulatorLow Output-Noise Voltage10 mA Load CurrentEMI FilteringUltra Low Standby CurrentVBATRange = 2.5V to 5.5V8-Bump DSBGA PackageAll trademarks are the property of their respective owners.One Input Clock, Two Output Clocks1.8V Square Wave Clock OutputsInverted Clock OutputsIndependent Clock RequestsHigh Isolation of Supply Noise to Clock InputHigh Output-to-Output IsolationIntegrated 1.8V Low-Dropout RegulatorLow Output-Noise Voltage10 mA Load CurrentEMI FilteringUltra Low Standby CurrentVBATRange = 2.5V to 5.5V8-Bump DSBGA PackageAll trademarks are the property of their respective owners.

Description

The LMH2191 is a dual-channel clock tree driver that supplies a digital system clock to peripherals in mobile handsets or other applications. It provides a solution to clocking issues such as limited drive capability for fanout or longer traces. It also provides protection of the master clock from varying loads and frequency pulling effects, isolation from noisy modules, and crosstalk isolation. It has very low phase noise which enables it to drive sensitive modules such as Wireless LAN and Bluetooth. The LMH2191 can be clocked up to 52 MHz and has an independent clock request pin for each clock output which allows the peripheral to control the clock. It features an integrated LDO which provides an ultra low-noise voltage supply with 10 mA external load current which can be used to supply the TCXO or other clock source. The LMH2191 dual clock distributor is offered in a tiny 1.61 mm x 1.063 mm 8-bump DSBGA package. Its small size and low supply current make it ideal for portable applications. The LMH2191 is a dual-channel clock tree driver that supplies a digital system clock to peripherals in mobile handsets or other applications. It provides a solution to clocking issues such as limited drive capability for fanout or longer traces. It also provides protection of the master clock from varying loads and frequency pulling effects, isolation from noisy modules, and crosstalk isolation. It has very low phase noise which enables it to drive sensitive modules such as Wireless LAN and Bluetooth. The LMH2191 can be clocked up to 52 MHz and has an independent clock request pin for each clock output which allows the peripheral to control the clock. It features an integrated LDO which provides an ultra low-noise voltage supply with 10 mA external load current which can be used to supply the TCXO or other clock source. The LMH2191 dual clock distributor is offered in a tiny 1.61 mm x 1.063 mm 8-bump DSBGA package. Its small size and low supply current make it ideal for portable applications.