LMH6552SDEVAL National Semiconductor, LMH6552SDEVAL Datasheet

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LMH6552SDEVAL

Manufacturer Part Number
LMH6552SDEVAL
Description
BOARD EVALUATION FOR LMH6552
Manufacturer
National Semiconductor
Series
LMH®, PowerWise®r

Specifications of LMH6552SDEVAL

Channels Per Ic
1 - Single
Amplifier Type
Differential
Output Type
Differential
Slew Rate
3800 V/µs
-3db Bandwidth
1.5GHz
Current - Output / Channel
80mA
Operating Temperature
-40°C ~ 85°C
Current - Supply (main Ic)
22.5mA
Voltage - Supply, Single/dual (±)
4.5 V ~ 12 V, ±2.25 V ~ 6 V
Board Type
Fully Populated
Utilized Ic / Part
LMH6552
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
© 2007 National Semiconductor Corporation
LMH6552
1.5 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 performance of the
LMH6552 driving an ADC14DS105 is 86 dBc SFDR and 74
dBc SNR up to 40 MHz.
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.
Single-Ended Input Differential Output ADC Driver
300035
Features
Applications
1.5 GHz −3 dB small signal bandwidth @ A
1.25 GHz −3 dB large signal 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
Level shift amplifier
SAW filter buffer/driver
V
30003566
= 4
September 2007
www.national.com
V
V
= 1
= 1

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LMH6552SDEVAL Summary of contents

Page 1

... SNR MHz. 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™ trademark of National Semiconductor Corporation. © 2007 National Semiconductor Corporation Features ■ 1.5 GHz −3 dB small signal bandwidth @ A ■ ...

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 5) Human Body Model Machine Model Supply Voltage Common Mode Input Voltage Maximum Input Current (pins Maximum Output Current (pins 4, 5) Soldering Information ± ...

Page 3

Symbol Parameter C Input Capacitance IN CMVR Input Common Mode Voltage Range 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 ...

Page 4

Symbol Parameter 0.1% Settling Time Overdrive Recovery Time Distortion and Noise Response HD2 2 nd Harmonic Distortion HD3 3 rd Harmonic Distortion IMD3 Two-Tone Intermodulation Input Noise Voltage Input Noise Current Noise Figure (See Figure 5) Input Characteristics I Input ...

Page 5

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but specific performance is not guaranteed. For guaranteed specifications, see the Electrical ...

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 Frequency Response vs. Resistive Load Frequency Response vs Suggested R 30003521 Frequency Response vs. Resistive Load 30003559 1 V Pulse Response Single Ended Input PP 30003561 7 vs. Capacitive Load OUT 30003522 30003560 ...

Page 8

V Pulse Response Single Ended Input PP Output Common Mode Pulse Response Distortion vs. Supply Voltage www.national.com Large Signal Pulse Response 30003527 Distortion vs. Frequency Single Ended Input 30003524 Distortion vs. Supply Voltage 30003543 8 30003525 30003529 30003537 ...

Page 9

Distortion vs. Output Common Mode Voltage Maximum V vs. I OUT OUT Open Loop Transimpedance Distortion vs. Output Common Mode Voltage 30003538 Minimum V 30003530 Open Loop Transimpedance 30003541 9 30003567 vs. I OUT OUT 30003531 30003542 www.national.com ...

Page 10

Closed Loop Output Impedance Overdrive Recovery PSRR www.national.com Closed Loop Output Impedance 30003517 Overdrive Recovery 30003557 30003519 10 30003518 30003558 PSRR 30003520 ...

Page 11

CMRR 30003533 Noise Figure 30003545 Input Noise vs. Frequency 30003549 Balance Error Noise Figure Differential S-Parameter Magnitude vs. Frequency 11 30003513 30003546 30003555 www.national.com ...

Page 12

Differential S-Parameter Phase vs. Frequency 3rd Order Intermodulation Products vs. V www.national.com 3rd Order Intermodulation Products vs. V 30003556 3rd Order Intermodulation Products vs. Center Frequency OUT 30003552 12 OUT 30003551 30003565 ...

Page 13

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 14

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 being driven ...

Page 15

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 16

FIGURE 9. Driving a 14-bit ADC The amplifier is configured to provide a gain sin- gle-to-differential mode. The LMH6552 common mode volt- age is set by the ADC14DS105. Circuit testing is the same as described ...

Page 17

DRIVING CAPACITIVE LOADS As noted previously, capacitive loads should be isolated from the amplifier output with small valued resistors. This is par- ticularly the case when the load has a resistive component that is 500Ω or higher. A typical ADC ...

Page 18

... National Semiconductor suggests the following evaluation boards to be used with the LMH6552: Device Package LMH6552MA SOIC LMH6552SD LLP These evaluation boards can be shipped when a device sam- ple request is placed with National Semiconductor. 18 for best performance at high G Evaluation Board Ordering ID LMH730154 LMH730168 ...

Page 19

Physical Dimensions inches (millimeters) unless otherwise noted 8-Pin SOIC NS Package Number M08A 8-Pin LLP NS Package Number SDA08C 19 www.national.com ...

Page 20

... National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders. ...

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