lmh6550mm National Semiconductor Corporation, lmh6550mm Datasheet

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lmh6550mm

Manufacturer Part Number
lmh6550mm
Description
Differential, High Speed Op Amp
Manufacturer
National Semiconductor Corporation
Datasheet

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Part Number:
LMH6550MM
Manufacturer:
NS/国半
Quantity:
20 000
© 2006 National Semiconductor Corporation
LMH6550
Differential, High Speed Op Amp
General Description
The LMH
differential amplifier. The LMH6550 has the high speed and
low distortion necessary for driving high performance ADCs
as well as the current handling capability to drive signals
over balanced transmission lines like CAT 5 data cables. The
LMH6550 can handle a wide range of video and data for-
mats.
With external gain set resistors, the LMH6550 can be used
at any desired gain. Gain flexibility coupled with high speed
makes the LMH6550 suitable for use as an IF amplifier in
high performance communications equipment.
The LMH6550 is available in the space saving SOIC and
MSOP packages.
Typical Application
Single Ended Input Differential Output.
Gain = A
LMH
is a trademark of National Semiconductor Corporation.
V
=0.5 * R
6550 is a high performance voltage feedback
F
/R
G
DS201301
Features
n 400 MHz −3 dB bandwidth (V
n 90 MHz 0.1 dB bandwidth
n 3000 V/µs slew Rate
n 8 ns settling time to 0.1%
n −92/−103 dB HD2/HD3
n 10 ns shutdown/enable
Applications
n Differential AD driver
n Video over twisted pair
n Differential line driver
n Single end to differential converter
n High speed differential signaling
n IF/RF amplifier
n SAW filter buffer/driver
20130110
@
5 MHz
OUT
= 0.5 V
PP
www.national.com
)
May 2006

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lmh6550mm Summary of contents

Page 1

... Single Ended Input Differential Output. Gain = A =0 LMH ™ trademark of National Semiconductor Corporation. © 2006 National Semiconductor Corporation Features n 400 MHz −3 dB bandwidth ( MHz 0.1 dB bandwidth n 3000 V/µs slew Rate settling time to 0.1% n −92/−103 dB HD2/HD3 shutdown/enable ...

Page 2

... Connection Diagram Ordering Information Package Part Number LMH6550MA 8-Pin SOIC LMH6550MAX LMH6550MM 8-Pin MSOP LMH6550MMX www.national.com 8-Pin SOIC & MSOP 20130108 Top View Package Marking Transport Media 95/Rails LMH6550MA 2.5k Units Tape and Reel 1k Units Tape and Reel AL1A 3.5k Units Tape and Reel ...

Page 3

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 ...

Page 4

Electrical Characteristics Single ended in differential out 25˚ Boldface limits apply at the temperature extremes. Symbol Parameter CMVR Input Common Mode Voltage Range V Pin Input Characteristics (Common Mode Feedback Amplifier Input ...

Page 5

Electrical Characteristics Single ended in differential out 25˚ Boldface limits apply at the temperature extremes. Symbol Parameter Distortion and Noise Response nd HD2 2 Harmonic Distortion rd HD3 3 Harmonic Distortion e Input Referred Noise ...

Page 6

Electrical Characteristics Single ended in differential out 25˚ Boldface limits apply at the temperature extremes. Symbol Parameter PSRR Power Supply Rejection Ratio I Supply Current S I Disabled Supply Current SD Note 1: Absolute Maximum ...

Page 7

Typical Performance Characteristics less Specified). Frequency Response vs. Supply Voltage Frequency Response vs. V Frequency Response vs. Capacitive Load ± 25˚ 20130114 Frequency Response vs. Gain OUT 20130116 Suggested R 20130121 7 5V, R ...

Page 8

Typical Performance Characteristics Unless Specified). (Continued) Suggested R vs. Cap Load OUT 2 V Pulse Response Single Ended Input PP Output Common Mode Pulse Response www.national.com ± 25˚ 5V Pulse ...

Page 9

Typical Performance Characteristics Unless Specified). (Continued) Distortion vs. Frequency Single Ended Input Minimum V vs. I OUT Closed Loop Output Impedance (T = 25˚ 20130129 OUT 20130131 20130118 9 ± 5V 500Ω ...

Page 10

Typical Performance Characteristics Unless Specified). (Continued) PSRR Balance Error www.national.com ± 25˚ 5V 20130120 3rd Order Intermodulation Products vs. V 20130113 10 = 500Ω 365Ω + ...

Page 11

Application Section The LMH6550 is a fully differential amplifier designed to provide low distortion amplification to wide bandwidth differ- ential signals. The LMH6550, though fully integrated for ultimate balance and distortion performance, functionally provides three channels. Two of these channels ...

Page 12

Application Section (Continued) FIGURE 4. Split Supply Bypassing Capacitors FIGURE 5. Single Supply Bypassing Capacitors The LMH6550 requires supply bypassing capacitors as shown in Figure 4 and Figure 5. The 0.01 µF and 0.1 µF capacitors should be leadless SMT ...

Page 13

Application Section (Continued) FIGURE 7. AC Coupled for Single Supply Operation DRIVING ANALOG TO DIGITAL CONVERTERS Analog to digital converters (ADC) present challenging load conditions. They typically have high impedance inputs with large and often variable capacitive components. As well, ...

Page 14

Application Section (Continued) FIGURE 9. Transformer Out High Impedance Load FIGURE 10. Calculating Transformer Circuit Net Gain FIGURE 11. Transformer Out Low Impedance Load www.national.com 20130107 FIGURE 12. Driving 50Ω Test Equipment CAPACITIVE DRIVE As noted in the Driving ADC ...

Page 15

Application Section (Continued) NOTE not 0V then there will be quiescent current CM flowing in the feedback network. This current should be included in the thermal calculations and added into the qui- escent power dissipation of the ...

Page 16

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 8-Pin SOIC NS Package Number M08A 8–Pin MSOP NS Package Number MUA08A 16 ...

Page 17

National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications. For the most current product information ...

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