Fully-differential 1GHz amplifier improves signal fidelity

The LMH6552 is a high-performance fully-differential amplifier designed to provide the signal fidelity and large-signal bandwidth necessary for driving 8- to 14-bit high-speed data acquisition systems.

Using proprietary differential, current-mode architecture, the LMH6552 allows operation at gains greater than unity without sacrificing response flatness, bandwidth, harmonic distortion or output noise performance.

With external gain-set resistors and integrated common-mode feedback, the LMH6552 can be configured as either a differential input to differential output or singleended input to differential output gain block. The LMH6552 can be AC or DC coupled at the input, which makes it suitable for a wide range of applications including communication systems and high-speed oscilloscope front ends.

The LMH6552 is available in an 8-pin SOIC package as well as a space-saving, thermally-enhanced 8-pin LLP package for higher performance.

 

FEATURES 1GHz bandwidth @ AV = 1 800MHz bandwidth @ AV = 4 450MHz 0.1dB flatness 3800V/µs slew rate 10ns settling time to 0.1% -90dB THD @ 20MHz -74dB THD @ 70MHz 20ns enable/shutdown pin 5 to 12V operation

APPLICATIONS Differential ADC driver Video over twisted pair Differential line driver Single-end to differential converter High-speed differential signaling IF/RF amplifier SAW filter buffer/driver

 

 

 

• International Rectifier’s IRS200x drivers, page 070911
• austriamicrosystems’ AS5046 magnetic encoder, page 070907
• National Semiconductor’s, ADC14DS105 dual ADC, page 070926

 

www.national.com/pf/LM/LMH6552.html