National Semiconductor LMH6550 Technical data

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LMH6550 Differential, High Speed Op Amp

December 2004

General Description

The LMH™6550 is a high performance voltage feedback 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 formats.

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 package.

Typical Application

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

OUT

5 MHz

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

= 0.5 VPP)

Single Ended Input Differential Output.

Gain = A

=0.5 * RF/R

™

is a trademark of National Semiconductor Corporation.

LMH

20130110

Connection Diagram

LMH6550

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

8-Pin SOIC

Top View

LMH6550MA

LMH6550MAX 2.5k Units Tape and Reel

LMH6550MA

20130108

95/Rails

M08A

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LMH6550

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications.

ESD Tolerance (Note 5)

Soldering Information

Infrared or Convection (20 sec) 235˚C

Wave Soldering (10 sec) 260˚C

Operating Ratings (Note 1)

Human Body Model 2000V

Machine Model 200V

Supply Voltage 13.2V

Common Mode Input Voltage

Maximum Input Current (pins 1, 2, 7, 8) 30mA

Operating Temperature Range −40˚C to +85˚C

Storage Temperature Range −65˚C to +150˚C

Total Supply Voltage 4.5V to 12V

Package Thermal Resistance (θ

) (Note 4)

8-Pin SOIC 150˚C/W

Maximum Output Current (pins 4, 5) (Note 3)

5V Electrical Characteristics (Note 2)

Single ended in differential out, TA= 25˚C, AV= +1, VS=±5V, VCM= 0V, RF=RG= 365Ω,RL= 500Ω;; Unless specified Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 8)

Typ

(Note 7)

Max

(Note 8)

Units

AC Performance (Differential)

SSBW Small Signal −3 dB Bandwidth V

LSBW Large Signal −3 dB Bandwidth V

Large Signal −3 dB Bandwidth V

0.1 dB Bandwidth V

OUT

= 0.5 V

=2V

=4V

= 0.5 V

400 MHz

380 MHz

320 MHz

90 MHz

Slew Rate 4V Step(Note 6) 2000 3000 V/µs

Rise/Fall Time 2V Step 1 ns

Settling Time 2V Step, 0.1% 8 ns

Pin AC Performance (Common Mode Feedback Amplifier)

Common Mode Small Signal

bypass capacitor removed 210 MHz

Bandwidth

Slew Rate V

bypass capacitor removed 200 V/µs

Distortion and Noise Response

HD2 2

HD2 V

HD3 3

HD3 V

Harmonic Distortion VO=2VPP,f=5MHz, RL=800Ω −92 dBc

=2VPP,f=20MHz, RL=800Ω −78 dBc

=2VPP,f=70MHz, RL=800Ω −59 dBc

Harmonic Distortion VO=2VPP,f=5MHz, RL=800Ω −103 dBc

=2VPP,f=20MHz, RL=800Ω −88 dBc

=2VPP,f=70MHz, RL=800Ω −50 dBc

Input Referred Voltage Noise Freq ≥ 1 MHz 6.0 nV/

Input Referred Noise Current Freq ≥ 1 MHz 1.5 pA/

Input Characteristics (Differential)

OSD

Input Offset Voltage Differential Mode, VID=0,VCM=0 1

Input Offset Voltage Average

(Note 10) 1.6 µV/˚C

Temperature Drift

Input Bias Current (Note 9) 0 -8 −16 µA

Input Bias Current Average

(Note 10) 9.6 nA/˚C

Temperature Drift

Input Bias Difference Difference in Bias currents between

0.3 µA

the two inputs

CMRR Common Mode Rejection Ratio DC, V

Input Resistance Differential 5 MΩ

Input Capacitance Differential 1 pF

= 0V, VID= 0V 72 82 dBc

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5V Electrical Characteristics (Note 2) (Continued)

Single ended in differential out, TA= 25˚C, AV= +1, VS=±5V, VCM= 0V, RF=RG= 365Ω,RL= 500Ω;; Unless specified Boldface limits apply at the temperature extremes.

LMH6550

Symbol Parameter Conditions Min

(Note 8)

CMVR Input Common Mode Voltage

Range

CMRR

53dB +3.1

−4.6

Typ

(Note 7)

+3.2

−4.7

Max

(Note 8)

VCMPin Input Characteristics (Common Mode Feedback Amplifier)

OSC

Input Offset Voltage Common Mode, VID=0 1

Input Offset Voltage Average

(Note 10) 25 µV/˚C

Temperature Drift

Input Bias Current (Note 9) −2 µA

CMRR VID= 0V, 1V step on VCMpin,

measure V

70 75 dB

Input Resistance 25 kΩ

Common Mode Gain

▲

O,CM

/▲V

0.995 0.997 1.005 V/V

Output Performance

Output Voltage Swing Single Ended, Peak to Peak,

Output Common Mode Voltage

=0V,

7.38

7.18

3.69

7.8 V

3.8 V

Range

OUT

Linear Output Current V

OUT

=0V

Short Circuit Current Output Shorted to Ground

= 3V Single Ended(Note 3)l

/∆V

OUT

Common Mode

DIfferential , V

OUT

Output Balance Error ∆V

= 1Vpp

75 mA

200 mA

−68 dB

Differential,f=10MHz

Miscellaneous Performance

Enable/Disable Time 10 ns

VOL

PSRR Power Supply Rejection Ratio DC, ∆V

Open Loop Gain Differential 70 dB

=±1V 74 90 dB

Supply Current R

∞

18 20 24

Disabled Supply Current 1 1.2 mA

Units

5V Electrical Characteristics (Note 2)

Single ended in differential out, TA= 25˚C, AV= +1, VS= 5V, VCM= 2.5V, RF=RG= 365Ω,RL= 500Ω; ; Unless specifiedBoldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

SSBW Small Signal −3 dB Bandwidth R

LSBW Large Signal −3 dB Bandwidth R

= 500Ω,V

OUT

= 0.5 V

=2V

0.1 dB Bandwidth 60 MHz

Slew Rate 2V Step(Note 6) 1500 V/µs

Rise/Fall Time, 10% to 90% 1V Step 1 ns

Settling Time 1V Step, 0.05% 12 ns

Pin AC Performance (Common Mode Feedback Amplifier)

Common Mode Small Signal Bandwidth

Slew Rate 180 V/µs

Distortion and Noise Response

HD2 2

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Harmonic Distortion VO=2VPP,f=5MHz, RL=800Ω −89 dBc

(Note 8)

Typ

(Note 7)

Max

(Note 8)

350 MHz

330 MHz

185 MHz

Units

5V Electrical Characteristics (Note 2) (Continued)

Single ended in differential out, TA= 25˚C, AV= +1, VS= 5V, VCM= 2.5V, RF=RG= 365Ω,RL= 500Ω; ; Unless specifiedBoldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 8)

HD2 V

HD3 3

Harmonic Distortion VO=2VPP,f=5MHz, RL=800Ω −85 dBc

HD3 V

Input Referred Noise Voltage Freq ≥ 1 MHz 6.0 nV/

Input Referred Noise Current Freq ≥ 1 MHz 1.5 pA/

=2VPP,f=20MHz, RL=800Ω −88 dBc

=2VPP,f=20MHz, RL=800Ω −70 dBc

Input Characteristics (Differential)

OSD

Input Offset Voltage Differential Mode, VID=0,VCM=0 1

Input Offset Voltage Average

(Note 10) 1.6 µV/˚C

Temperature Drift

BIAS

Input Bias Current (Note 9) 0 −8 −16 µA

Input Bias Current Average

(Note 10) 9.5 nA/˚C

Temperature Drift

Input Bias Current Difference Difference in Bias currents between

the two inputs

CMRR Common-Mode Rejection Ratio DC, V

= 0V 70 80 dBc

Input Resistance Differential 5 MΩ

Input Capacitance Differential 1 pF

ICM

Input Common Mode Range CMRR>53 dB +3.1

Pin Input Characteristics (Common Mode Feedback Amplifier)

Input Offset Voltage Common Mode, V

=0 1

Input Offset Voltage Average Temperature Drift

Input Bias Current 3µA

CMRR VID=0,

pin, measure V

Input Resistance V

Common Mode Gain

1V step on V

pin to ground 25 kΩ

▲

/▲V

O,CM

Output Performance

OUT

CMVR Common Mode Voltage Range V

Output Voltage Swing Single Ended, Peak to Peak, VS=

2.5V, VCM=0V

Linear Output Current V

= 0V Differential

OUT

Output Short Circuit Current Output Shorted to Ground

= 3V Single Ended(Note 3)

=0,VCMpin = 1.2V and 3.8V 3.72

Output Balance Error ∆V

Common Mode

OUT

/∆V

OUT

DIfferential , V

OUT

= 1Vpp

Differential,f=10MHz

Miscellaneous Performance

Enable/Disable Time 10 ns

Open Loop Gain DC, Differential 70 dB

PSRR Power Supply Rejection Ratio DC, ∆V

Supply Current RL=

Disabled Supply Current 1 1.2 mA

=±0.5V 72 77 dB

∞

+0.4

70 75 dB

2.4

1.23

16.5 19 23.5

Typ

(Note 7)

Max

(Note 8)

0.3 µA

+3.2 +0.3

18.6 µV/˚C

0.991 V/V

2.8 V

70 mA

250 mA

3.8

1.2

−65 dB

26.5

Units

LMH6550

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5V Electrical Characteristics (Note 2) (Continued)

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 Characteristics tables.

LMH6550

Note 2: Electrical Table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of

the device such that T

Note 3: The maximum output current (I

Note 4: The maximum power dissipation is a function of T

=(T

J(MAX)—TA

Note 5: Human body model: 1.5 kΩ in series with 100 pF. Machine model: 0Ω in series with 200pF.

Note 6: Slew Rate is the average of the rising and falling edges.

Note 7: Typical numbers are the most likely parametric norm.

Note 8: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control

(SQC) methods.

Note 9: Negative input current implies current flowing out of the device.

Note 10: Drift determined by dividing the change in parameter at temperature extremes by the total temperature change.

Note 11: Parameter is guaranteed by design.

. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self-heating where T

J=TA

)/ θJA. All numbers apply for package soldered directly into a 2 layer PC board with zero air flow.

) is determined by device power dissipation limitations.

OUT

, θJAand TA. The maximum allowable power dissipation at any ambient temperature is

J(MAX)

TA.

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