LMH6552MA NSC [National Semiconductor], LMH6552MA Datasheet

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LMH6552MA

Manufacturer Part Number
LMH6552MA
Description
1 GHz Fully Differential Amplifier
Manufacturer
NSC [National Semiconductor]
Datasheet

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© 2007 National Semiconductor Corporation
LMH6552
1 GHz Fully Differential Amplifier
General Description
The LMH6552 is a high performance fully differential amplifier
designed to provide the exceptional signal fidelity and wide
large-signal bandwidth necessary for driving 8 to 14 bit high
speed data acquisition systems. Using National's proprietary
differential current mode input stage 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 differ-
ential input to differential output or single ended 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.
Typical Application
LMH™ is a trademark of National Semiconductor Corporation.
300035
Single-Ended Input Differential Output
Features
Applications
1.0 GHz bandwidth @ A
800 MHz bandwidth @ A
450 MHz 0.1 dB flatness
3800 V/µs slew rate
10 ns settling time to 0.1%
−90 dB THD @ 20 MHz
−74 dB THD @ 70 MHz
20 ns enable/shutdown pin
5 to 12V operation
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
30003544
V
V
= 1
= 4
www.national.com
April 2007

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LMH6552MA Summary of contents

Page 1

LMH6552 1 GHz Fully Differential Amplifier General Description The LMH6552 is a high performance fully differential amplifier designed to provide the exceptional signal fidelity and wide large-signal bandwidth necessary for driving bit high speed data acquisition systems. ...

Page 2

Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 6) Human Body Model Machine Model Supply Voltage Common Mode Input Voltage Maximum Input Current (pins ...

Page 3

Symbol Parameter Output Performance Output Voltage Swing (Note 7) I Linear Output Current (Note 7) OUT I Short Circuit Current SC Output Balance Error Miscellaneous Performance Z Open Loop Transimpedance T PSRR Power Supply Rejection Ratio I Supply Current (Note ...

Page 4

Symbol Parameter HD3 3 rd Harmonic Distortion IMD3 Two-Tone Intermodulation Input Noise Voltage Input Noise Current Noise Figure (See Figure 5) Input Characteristics I Input Bias Current (Note 10 Input Bias Current Differential Boffset (Note 7) CMRR Common-Mode ...

Page 5

... Ordering Information Package Part Number LMH6552MA 8-Pin SOIC LMH6552MAX , θ . The maximum allowable power dissipation at any ambient temperature is J(MAX *2R OD(offset) BI 8-Pin SOIC 30003508 Top View Package Marking Transport Media LMH6552MA 2.5k Units Tape and Reel 5 F NSC Drawing 95/Rails M08A www.national.com ...

Page 6

Typical Performance Characteristics V 357Ω 500Ω for single ended in, differential out, unless specified Frequency Response vs. Gain Frequency Response vs. V Frequency Response vs. Supply Voltage www.national.com + = +5V, V − ...

Page 7

Frequency Response vs. Capacitive Load 1 V Pulse Response Single Ended Input PP Large Signal Pulse Response Suggested R 30003521 2 V Pulse Response Single Ended Input PP 30003526 Output Common Mode Pulse Response 30003525 7 vs. Capacitive Load OUT ...

Page 8

Distortion vs. Frequency Single Ended Input Distortion vs. Supply Voltage Maximum V OUT www.national.com 30003529 Distortion vs. Output Common Mode Voltage 30003537 vs. I OUT 30003530 8 Distortion vs. Supply Voltage 30003543 30003538 Minimum V vs. I OUT OUT 30003531 ...

Page 9

Open Loop Transimpedance 30003541 Closed Loop Output Impedance 30003517 Overdrive Recovery 30003557 Open Loop Transimpedance Closed Loop Output Impedance Overdrive Recovery 9 30003542 30003518 30003558 www.national.com ...

Page 10

PSRR CMRR Noise Figure www.national.com 30003519 30003533 30003545 10 PSRR 30003520 Balance Error 30003513 Noise Figure 30003546 ...

Page 11

Input Noise vs. Frequency Differential S-Parameter Phase vs. Frequency 3rd Order Intermodulation Products vs. V Differential S-Parameter Magnitude vs. Frequency 30003549 3rd Order Intermodulation Products vs. V 30003556 OUT 30003552 11 30003555 OUT 30003551 www.national.com ...

Page 12

Application Information The LMH6552 is a fully differential current feedback amplifier with integrated output common mode control, designed to provide low distortion amplification to wide bandwidth differ- ential signals. The common mode feedback circuit sets the output common mode voltage ...

Page 13

FIGURE 3. Single Ended Input with Differential Output When using the LMH6552 in single to differential mode, the complimentary output is forced to a phase inverted replica of the driven output by the common mode feedback circuit as opposed to ...

Page 14

SPLIT SUPPLY OPERATION For optimum performance, split supply operation is recom- mended using +5V and −5V supplies however operation is possible on split supplies as low as +2.25V and −2.25V and as high as +6V and −6V. Provided the total ...

Page 15

ADC+Amplifier combinations. The use of the LMH6552 to drive an ADC is determined by the application and the desired sampling process (Nyquist operation, sub-sampling or over- sampling). See application note (AN-236) for more details on the sampling processes and application ...

Page 16

... National Semiconductor suggests the following evaluation AMP CC boards to be used with the LMH6552: is not mid rail.) Device OCM + ) * rms ((V OUT OUT S LMH6552MA and I are the voltage OUT These evaluation boards can be shipped when a device sam- ple request is placed with National Semiconductor AMP θ ...

Page 17

Physical Dimensions inches (millimeters) unless otherwise noted 8-Pin SOIC NS Package Number M08A 17 www.national.com ...

Page 18

THE CONTENTS OF THIS DOCUMENT ARE PROVIDED IN CONNECTION WITH NATIONAL SEMICONDUCTOR CORPORATION (“NATIONAL”) PRODUCTS. NATIONAL MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THE ACCURACY OR COMPLETENESS OF THE CONTENTS OF THIS PUBLICATION AND RESERVES THE RIGHT TO MAKE ...

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