NSC LMH6642MF, LMH6642MA Datasheet

LMH6642/6643/6644
3V, Low Power, 130MHz, 75mA Rail-to-Rail Output
Amplifiers

General Description

The LMH664X family true single supply voltage feedback
amplifiers offer high speed (130MHz), low distortion
(−62dBc), and exceptionally high output current (approxi­mately 75mA) at low cost and with reduced power consump­tion when compared against existing devices with similar
performance.

Input common mode voltage range extends to 0.5V below V
and 1V from V+. Output voltage range extends to within
40mV of either supply rail, allowing wide dynamic range
especially desirable in low voltage applications. The output
stage is capable of approximately 75mA in order to drive
heavy loads. Fast output Slew Rate (130V/µs) ensures large
peak-to-peak output swings can be maintained even at
higher speeds, resulting in exceptional full power bandwidth
of 40MHz with a 3V supply. These characteristics, along with
low cost, are ideal features for a multitude of industrial and
commercial applications.

Careful attention has been paid to ensure device stability
under all operating voltages and modes. The result is a very
well behaved frequency response characteristic (0.1dB gain
flatness up the 12MHz under 150Ω load and A
minimal peaking (typically 2dB maximum) for any gain set­ting and under both heavy and light loads. This along with
fast settling time (68ns) and low distortion allows the device
to operate well in ADC buffer, and high frequency filter
applications as well as other applications.

This device family offers professional quality video perfor­mance with low DG (0.01%) and DP (0.01˚) characteristics.
Differential Gain and Differential Phase characteristics are
also well maintained under heavy loads (150Ω) and through­out the output voltage range. The LMH664X family is offered

= +2) with

V

in single (LMH6642), dual (LMH6643), and quad (LMH6644)
options. See ordering information for packages offered.

Features

(VS=±5V, TA= 25˚C, RL=2kΩ,AV= +1. Typical values
unless specified).

n −3dB BW (A

−

n Supply voltage range 3V to 12.8V
n Slew rate (Note 8), (A
n Supply current (no load) 2.7mA/amp
n Output short circuit current +115mA/−145mA
n Linear output current
n Input common mode volt. 0.5V beyond V
n Output voltage swing 40mV from rails
n Input voltage noise (100kHz) 17nV/
n Input current noise (100kHz) 0.9pA/
n THD (5MHz, RL=2kΩ,VO=2VPP,AV= +2) −62dBc
n Settling time 68ns
n Fully characterized for 3V, 5V, and
n Overdrive recovery 100ns
n Output short circuit protected (Note 11)
n No output phase reversal with CMVR exceeded

= +1) 130MHz

V

= −1) 130V/µs

V

±

5V

Applications

n Active filters
n CD/DVD ROM
n ADC buffer amp
n Portable video
n Current sense buffer

May 2003

±

75mA

−

, 1V from V

LMH6642/6643/6644 3V, Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers

+

Closed Loop Gain vs. Frequency for Various Gain Large Signal Frequency Response

20018535

© 2003 National Semiconductor Corporation DS200185 www.national.com

20018547

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

Infrared or Convection Reflow(20 sec) 235˚C

Wave Soldering Lead Temp.(10 sec) 260˚C

please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Operating Ratings (Note 1)

ESD Tolerance 2KV (Note 2)

LMH6642/6643/6644

Differential

V

IN

Output Short Circuit Duration (Note 3), (Note 11)

Supply Voltage (V

Voltage at Input/Output pins V

+-V−

) 13.5V

+

+0.8V, V−−0.8V

Input Current

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

Junction Temperature (Note 4) +150˚C

Soldering Information

200V (Note 9)

±

2.5V

±

10mA

Supply Voltage (V

Junction Temperature Range (Note 4) −40˚C to +85˚C

Package Thermal Resistance (Note 4) (θ

SOT23-5 265˚C/W

SOIC-8 190˚C/W

MSOP-8 235˚C/W

SOIC-14 145˚C/W

TSSOP-14 155˚C/W

+–V−

) 3V to 12.8V

)

JA

3V Electrical Characteristics

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, V+= 3V, V−= 0V, VCM=VO=V+/2, and RL=2kΩ to V+/2.

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

BW −3dB BW A

BW

0.1dB

0.1dB Gain Flatness AV= +2, RL= 150Ω to V+/2,

PBW Full Power Bandwidth A

e

n

Input-Referred Voltage Noise f = 100kHz 17

= +1, V

V

A

= +2, −1, V

V

= 402Ω,V

R

L

= +1, −1dB, V

V

OUT

= 200mV

OUT

= 200mV

OUT

OUT

PP

= 200mV

=1V

PP

PP

PP

f = 1kHz 48

i

n

Input-Referred Current Noise f = 100kHz 0.90

f = 1kHz 3.3

THD Total Harmonic Distortion f = 5MHz, V

= 100Ω to V+/2

R

L

DG Differential Gain V

DP Differential Phase V

= 1V, NTSC, AV=+2

CM

=150Ω to V+/2

R

L

R

=1kΩ to V+/2 0.03

L

= 1V, NTSC, AV=+2

CM

=150Ω to V+/2

R

L

R

=1kΩ to V+/2 0.03

L

=2VPP,AV= −1,

O

CT Rej. Cross-Talk Rejection f = 5MHz, Receiver:

= 510Ω,AV=+2

f=Rg

=5V

S

= −1, VI=2V

V

PP

T

S

Settling Time VO=2VPP,±0.1%, 8pF Load,

SR Slew Rate (Note 8) A

V

OS

TC V

I

B

I

OS

R

IN

Input Offset Voltage

Input Offset Average Drift (Note 12)

OS

Input Bias Current (Note 7) −1.50 −2.60

Input Offset Current 20 800

Common Mode Input

R

V

Resistance

C

IN

Common Mode Input
Capacitance

80 115

90 120 V/µs

Typ

(Note 5)

Max

(Note 6)

46

19 MHz

40 MHz

−48

0.17

0.05

47 dB

68 ns

±

1

±

5 µV/˚C

±

5

±

7

−3.25

1000

3MΩ

2pF

Units

MHz

nV/

pA/

dBc

%

deg

mV

µA

nA

www.national.com 2

3V Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, V+= 3V, V−= 0V, VCM=VO=V+/2, and RL=2kΩ to V+/2.

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

CMVR Input Common-Mode Voltage

CMRR ≥ 50dB −0.5 −0.2

Range

CMRR Common Mode Rejection

Stepped from 0V to 1.5V 72 95 dB

V

CM

Ratio

A

VOL

V

O

I

SC

I

OUT

+PSRR Positive Power Supply

Large Signal Voltage Gain VO= 0.5V to 2.5V

=2kΩ to V+/2

R

L

V

= 0.5V to 2.5V

O

= 150Ω to V+/2

R

L

Output Swing
High

Output Swing
Low

RL=2kΩ to V+/2, VID= 200mV 2.90 2.98

R

= 150Ω to V+/2, VID= 200mV 2.80 2.93

L

R

=2kΩ to V+/2, VID= −200mV 25 75

L

R

= 150Ω to V+/2, VID= −200mV 75 150

L

Output Short Circuit Current Sourcing to V+/2

= 200mV (Note 10)

V

Output Current V

ID

Sinking to V

= −200mV (Note 10)

V

ID

OUT
+

V

= 3.0V to 3.5V, VCM= 1.5V 75 85 dB

+

/2

= 0.5V from either supply

Rejection Ratio

I

S

Supply Current (per channel) No Load 2.70 4.00

1.8

1.6

80

75

74

70

50

35

55

40

Typ

(Note 5)

Max

(Note 6)

−0.1

2.0

96

82

95

110

±

65 mA

4.50

Units

LMH6642/6643/6644

V

dB

V

mV

mA

mA

5V Electrical Characteristics

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, V+= 5V, V−= 0V, VCM=VO=V+/2, and RL=2kΩ to V+/2.

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

BW −3dB BW A

BW

0.1dB

0.1dB Gain Flatness AV= +2, RL= 150Ω to V+/2,

PBW Full Power Bandwidth A

e

n

Input-Referred Voltage Noise f = 100kHz 17

= +1, V

V

A

= +2, −1, V

V

= 402Ω,V

R

f

= +1, −1dB, V

V

OUT

OUT

= 200mV

= 200mV

OUT

= 200mV

OUT

PP

=2V

90 120

PP

PP

PP

f = 1kHz 48

i

n

Input-Referred Current Noise f = 100kHz 0.90

f = 1kHz 3.3

THD Total Harmonic Distortion f = 5MHz, V

DG Differential Gain NTSC, A

=150Ω to V+/2

R

L

R

=1kΩ to V+/2 0.05

L

DP Differential Phase NTSC, A

=150Ω to V+/2

R

L

R

=1kΩ to V+/2 0.01

L

=2VPP,AV= +2 −60 dBc

O

=+2

V

=+2

V

CT Rej. Cross-Talk Rejection f = 5MHz, Receiver:

R

T

S

Settling Time VO=2VPP,±0.1%, 8pF Load 68 ns

= 510Ω,AV=+2

f=Rg

Typ

(Note 5)

Max

(Note 6)

46

15 MHz

22 MHz

0.16

0.05

47 dB

Units

nV/

pA/

MHz

%

deg

www.national.com3

5V Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, V+= 5V, V−= 0V, VCM=VO=V+/2, and RL=2kΩ to V+/2.

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

SR Slew Rate (Note 8) A

V

LMH6642/6643/6644

OS

TC V

I

B

I

OS

R

IN

Input Offset Voltage

Input Offset Average Drift (Note 12)

OS

Input Bias Current (Note 7)

Input Offset Current

Common Mode Input

= −1, VI=2V

V

PP

Resistance

C

IN

Common Mode Input
Capacitance

CMVR Input Common-Mode Voltage

CMRR ≥ 50dB

Range

CMRR Common Mode Rejection

Stepped from 0V to 3.5V

V

CM

Ratio

A

VOL

V

O

I

SC

I

OUT

+PSRR Positive Power Supply

Large Signal Voltage Gain VO= 0.5V to 4.50V

=2kΩ to V+/2

R

L

V

= 0.5V to 4.25V

O

= 150Ω to V+/2

R

L

Output Swing
High

Output Swing
Low

RL=2kΩ to V+/2, VID= 200mV 4.90 4.98

R

= 150Ω to V+/2, VID= 200mV 4.65 4.90

L

R

=2kΩ to V+/2, VID= −200mV 25 100

L

R

= 150Ω to V+/2, VID= −200mV 100 150

L

Output Short Circuit Current Sourcing to V+/2

= 200mV (Note 10)

V

ID

Sinking to V

= −200mV (Note 10)

V

ID

+

/2

Output Current VO= 0.5V from either supply

+

V

= 4.0V to 6V

Rejection Ratio

I

S

Supply Current (per channel) No Load

(Note 6)

95 125 V/µs

3.8

3.6

72 95

86

82

76

72

55

40

70

55

79 90

Typ

(Note 5)

±

1

±

5 µV/˚C

−1.70

20

Max

(Note 6)

±

5

±

7

−2.60

−3.25

800

1000

3

2

−0.5

−0.2

−0.1

4.0

98

82

115

140

±

70 mA

2.70

4.25

5.00

Units

mV

µA

nA

MΩ

pF

V

dB

dB

V

mV

mA

dB

mA

±

5V Electrical Characteristics

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, V+= 5V, V−= −5V, VCM=VO= 0V and RL=2kΩ to ground.

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

BW −3dB BW A

BW

0.1dB

0.1dB Gain Flatness AV= +2, RL= 150Ω to V+/2,

PBW Full Power Bandwidth A

e

n

Input-Referred Voltage Noise f = 100kHz 17

= +1, V

V

A

= +2, −1, V

V

= 806Ω,V

R

f

= +1, −1dB, V

V

OUT

OUT

= 200mV

= 200mV

OUT

= 200mV

OUT

PP

=2V

95 130

PP

PP

PP

Typ

(Note 5)

Max

(Note 6)

46

12 MHz

24 MHz

f = 1kHz 48

www.national.com 4

Units

MHz

nV/

±

5V Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for at TJ= 25˚C, V+= 5V, V−= −5V, VCM=VO= 0V and RL=2kΩ to ground.

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

i

n

Input-Referred Current Noise f = 100kHz 0.90

f = 1kHz 3.3

THD Total Harmonic Distortion f = 5MHz, V

DG Differential Gain NTSC, A

=150Ω to V+/2

R

L

R

=1kΩ to V+/2 0.01

L

DP Differential Phase NTSC, A

=150Ω to V+/2

R

L

R

=1kΩ to V+/2 0.01

L

=2VPP,AV= +2 −62 dBc

O

=+2

V

=+2

V

CT Rej. Cross-Talk Rejection f = 5MHz, Receiver:

Rf=Rg= 510Ω,AV=+2

T

S

SR Slew Rate (Note 8) A

V

OS

TC V

I

B

I

OS

R

IN

Settling Time VO=2VPP,±0.1%, 8pF Load,

=5V

V

S

= −1, VI=2V

V

Input Offset Voltage

Input Offset Average Drift (Note 12)

OS

Input Bias Current (Note 7)

Input Offset Current

Common Mode Input

PP

100 135 V/µs

Resistance

C

IN

Common Mode Input
Capacitance

CMVR Input Common-Mode Voltage

CMRR ≥ 50dB

Range

3.8

3.6

CMRR Common Mode Rejection

Ratio

A

VOL

V

O

Large Signal Voltage Gain VO= −4.5V to 4.5V,

Output Swing
High

Output Swing
Low

I

I

SC

OUT

Output Short Circuit Current Sourcing to Ground

Output Current VO= 0.5V from either supply

PSRR Power Supply Rejection Ratio (V

I

S

Supply Current (per channel) No Load

Stepped from −5V to 3.5V

V

CM

74 95

88

=2kΩ

R

L

V

= −4.0V to 4.0V,

O

= 150Ω

R

L

84

78

74

RL=2kΩ,VID= 200mV 4.90 4.96

R

= 150Ω,VID= 200mV 4.65 4.80

L

R

=2kΩ,VID= −200mV −4.96 −4.90

L

R

= 150Ω,VID= −200mV −4.80 −4.65

L

60

= 200mV (Note 10)

V

ID

Sinking to Ground

= −200mV (Note 10)

V

ID

+,V−

) = (4.5V, −4.5V) to (5.5V,

−5.5V)

35

85

65

±

75 mA

78 90

Typ

(Note 5)

Max

(Note 6)

0.15

0.04

47 dB

68

±

±

1

±

5 µV/˚C

−1.60

20

5

±

7

−2.60

−3.25

800

1000

3

2

−5.5

−5.2

−5.1

4.0

96

82

115

145

2.70

4.50

5.50

Units

pA/

deg

ns

mV

µA

nA

MΩ

pF

dB

dB

mA

dB

mA

LMH6642/6643/6644

%

V

V

V

www.national.com5

±

5V Electrical Characteristics (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 and the test conditions, see the Electrical Characteristics.

Note 2: Human body model, 1.5kΩ in series with 100pF.

Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the

maximum allowed junction temperature of 150˚C.

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

=(T

D

LMH6642/6643/6644

J(MAX)-TA

Note 5: Typical values represent the most likely parametric norm.

Note 6: All limits are guaranteed by testing or statistical analysis.

Note 7: Positive current corresponds to current flowing into the device.

Note 8: Slew rate is the average of the rising and falling slew rates.

Note 9: Machine Model, 0Ω in series with 200pF.

Note 10: Short circuit test is a momentary test. See Note 11.

Note 11: Output short circuit duration is infinite for V

Note 12: Offset voltage average drift determined by dividing the change in V

)/ θJA. All numbers apply for packages soldered directly onto a PC board.

<

6V at room temperature and below. For V

S

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

J(MAX)

>

6V, allowable short circuit duration is 1.5ms.

at temperature extremes by the total temperature change.

OS

S

Connection Diagrams

SOIC-8 and MSOP-8

SOT23-5 (LMH6642) SOIC-8 (LMH6642)

(LMH6643)

Top View

20018561

Top View

SOIC-14 and TSSOP-14

(LMH6644)

Top View

20018562

20018563

Top View

20018568

www.national.com 6

LMH6642/6643/6644

Typical Performance Characteristics At T

= 25˚C, V+= +5, V−= −5V, RF=RL=2kΩ. Unless

J

otherwise specified.

Closed Loop Frequency Response for Various Supplies Closed Loop Gain vs. Frequency for Various Gain

20018557

20018551

Closed Loop Frequency Response for Various

Closed Loop Gain vs. Frequency for Various Gain

Temperature

20018535

Closed Loop Gain vs. Frequency for Various Supplies

20018548

20018550

Closed Loop Frequency Response for Various

Temperature

20018534

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