NSC LMH6644MTX, LMH6644MT, LMH6644MAX, LMH6643MWC, LMH6643MDC 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

V

= +2) with 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

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

V

= +1) 130MHz

n Supply voltage range 3V to 12.8V n Slew rate (Note 8), (A

V

= −1) 130V/µs

n Supply current (no load) 2.7mA/amp n Output short circuit current +115mA/−145mA n Linear output current

±

75mA

n Input common mode volt. 0.5V beyond V

−

, 1V from 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

±

5V

n Overdrive recovery 100ns n Output short circuit protected (Note 11) n No output phase reversal with CMVR exceeded

Applications

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

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

20018535

20018547

May 2003

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

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 2KV (Note 2)

200V (Note 9)

V

IN

Differential

±

2.5V

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

Supply Voltage (V

+-V−

) 13.5V

Voltage at Input/Output pins V

+

+0.8V, V−−0.8V

Input Current

±

10mA

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

Junction Temperature (Note 4) +150˚C

Soldering Information

Infrared or Convection Reflow(20 sec) 235˚C

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

Operating Ratings (Note 1)

Supply Voltage (V

+–V−

) 3V to 12.8V

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

Package Thermal Resistance (Note 4) (θ

JA

)

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

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)

Typ

(Note 5)

Max

(Note 6)

Units

BW −3dB BW A

V

= +1, V

OUT

= 200mV

PP

80 115

MHz

A

V

= +2, −1, V

OUT

= 200mV

PP

46

BW

0.1dB

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

L

= 402Ω,V

OUT

= 200mV

PP

19 MHz

PBW Full Power Bandwidth A

V

= +1, −1dB, V

OUT

=1V

PP

40 MHz

e

n

Input-Referred Voltage Noise f = 100kHz 17

nV/

f = 1kHz 48

i

n

Input-Referred Current Noise f = 100kHz 0.90

pA/

f = 1kHz 3.3

THD Total Harmonic Distortion f = 5MHz, V

O

=2VPP,AV= −1,

R

L

= 100Ω to V+/2

−48 dBc

DG Differential Gain V

CM

= 1V, NTSC, AV=+2

R

L

=150Ω to V+/2

0.17 %

R

L

=1kΩ to V+/2 0.03

DP Differential Phase V

CM

= 1V, NTSC, AV=+2

R

L

=150Ω to V+/2

0.05

deg

R

L

=1kΩ to V+/2 0.03

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

R

f=Rg

= 510Ω,AV=+2

47 dB

T

S

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

V

S

=5V

68 ns

SR Slew Rate (Note 8) A

V

= −1, VI=2V

PP

90 120 V/µs

V

OS

Input Offset Voltage

±

1

±

5

±

7

mV

TC V

OS

Input Offset Average Drift (Note 12)

±

5 µV/˚C

I

B

Input Bias Current (Note 7) −1.50 −2.60

−3.25

µA

I

OS

Input Offset Current 20 800

1000

nA

R

IN

Common Mode Input Resistance

3MΩ

C

IN

Common Mode Input Capacitance

2pF

LMH6642/6643/6644

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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)

Typ

(Note 5)

Max

(Note 6)

Units

CMVR Input Common-Mode Voltage

Range

CMRR ≥ 50dB −0.5 −0.2

−0.1

V

1.8

1.6

2.0

CMRR Common Mode Rejection

Ratio

V

CM

Stepped from 0V to 1.5V 72 95 dB

A

VOL

Large Signal Voltage Gain VO= 0.5V to 2.5V

R

L

=2kΩ to V+/2

80

75

96

dB

V

O

= 0.5V to 2.5V

R

L

= 150Ω to V+/2

74

70

82

V

O

Output Swing High

RL=2kΩ to V+/2, VID= 200mV 2.90 2.98

V

R

L

= 150Ω to V+/2, VID= 200mV 2.80 2.93

Output Swing Low

R

L

=2kΩ to V+/2, VID= −200mV 25 75

mV

R

L

= 150Ω to V+/2, VID= −200mV 75 150

I

SC

Output Short Circuit Current Sourcing to V+/2

V

ID

= 200mV (Note 10)

50

35

95

mA

Sinking to V

+

/2

V

ID

= −200mV (Note 10)

55

40

110

I

OUT

Output Current V

OUT

= 0.5V from either supply

±

65 mA

+PSRR Positive Power Supply

Rejection Ratio

V

+

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

I

S

Supply Current (per channel) No Load 2.70 4.00

4.50

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)

Typ

(Note 5)

Max

(Note 6)

Units

BW −3dB BW A

V

= +1, V

OUT

= 200mV

PP

90 120

MHz

A

V

= +2, −1, V

OUT

= 200mV

PP

46

BW

0.1dB

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

f

= 402Ω,V

OUT

= 200mV

PP

15 MHz

PBW Full Power Bandwidth A

V

= +1, −1dB, V

OUT

=2V

PP

22 MHz

e

n

Input-Referred Voltage Noise f = 100kHz 17

nV/

f = 1kHz 48

i

n

Input-Referred Current Noise f = 100kHz 0.90

pA/

f = 1kHz 3.3

THD Total Harmonic Distortion f = 5MHz, V

O

=2VPP,AV= +2 −60 dBc

DG Differential Gain NTSC, A

V

=+2

R

L

=150Ω to V+/2

0.16 %

R

L

=1kΩ to V+/2 0.05

DP Differential Phase NTSC, A

V

=+2

R

L

=150Ω to V+/2

0.05

deg

R

L

=1kΩ to V+/2 0.01

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

R

f=Rg

= 510Ω,AV=+2

47 dB

T

S

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

LMH6642/6643/6644

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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

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

SR Slew Rate (Note 8) A

V

= −1, VI=2V

PP

95 125 V/µs

V

OS

Input Offset Voltage

±

1

±

5

±

7

mV

TC V

OS

Input Offset Average Drift (Note 12)

±

5 µV/˚C

I

B

Input Bias Current (Note 7)

−1.70

−2.60

−3.25

µA

I

OS

Input Offset Current

20

800

1000

nA

R

IN

Common Mode Input Resistance

3

MΩ

C

IN

Common Mode Input Capacitance

2

pF

CMVR Input Common-Mode Voltage

Range

CMRR ≥ 50dB

−0.5

−0.2

−0.1

V

3.8

3.6

4.0

CMRR Common Mode Rejection

Ratio

V

CM

Stepped from 0V to 3.5V

72 95

dB

A

VOL

Large Signal Voltage Gain VO= 0.5V to 4.50V

R

L

=2kΩ to V+/2

86

82

98

dB

V

O

= 0.5V to 4.25V

R

L

= 150Ω to V+/2

76

72

82

V

O

Output Swing High

RL=2kΩ to V+/2, VID= 200mV 4.90 4.98

V

R

L

= 150Ω to V+/2, VID= 200mV 4.65 4.90

Output Swing Low

R

L

=2kΩ to V+/2, VID= −200mV 25 100

mV

R

L

= 150Ω to V+/2, VID= −200mV 100 150

I

SC

Output Short Circuit Current Sourcing to V+/2

V

ID

= 200mV (Note 10)

55

40

115

mA

Sinking to V

+

/2

V

ID

= −200mV (Note 10)

70

55

140

I

OUT

Output Current VO= 0.5V from either supply

±

70 mA

+PSRR Positive Power Supply

Rejection Ratio

V

+

= 4.0V to 6V

79 90

dB

I

S

Supply Current (per channel) No Load

2.70

4.25

5.00

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)

Typ

(Note 5)

Max

(Note 6)

Units

BW −3dB BW A

V

= +1, V

OUT

= 200mV

PP

95 130

MHz

A

V

= +2, −1, V

OUT

= 200mV

PP

46

BW

0.1dB

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

f

= 806Ω,V

OUT

= 200mV

PP

12 MHz

PBW Full Power Bandwidth A

V

= +1, −1dB, V

OUT

=2V

PP

24 MHz

e

n

Input-Referred Voltage Noise f = 100kHz 17

nV/

f = 1kHz 48

LMH6642/6643/6644

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±

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)

Typ

(Note 5)

Max

(Note 6)

Units

i

n

Input-Referred Current Noise f = 100kHz 0.90

pA/

f = 1kHz 3.3

THD Total Harmonic Distortion f = 5MHz, V

O

=2VPP,AV= +2 −62 dBc

DG Differential Gain NTSC, A

V

=+2

R

L

=150Ω to V+/2

0.15 %

R

L

=1kΩ to V+/2 0.01

DP Differential Phase NTSC, A

V

=+2

R

L

=150Ω to V+/2

0.04

deg

R

L

=1kΩ to V+/2 0.01

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

Rf=Rg= 510Ω,AV=+2

47 dB

T

S

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

V

S

=5V

68

ns

SR Slew Rate (Note 8) A

V

= −1, VI=2V

PP

100 135 V/µs

V

OS

Input Offset Voltage

±

1

±

5

±

7

mV

TC V

OS

Input Offset Average Drift (Note 12)

±

5 µV/˚C

I

B

Input Bias Current (Note 7)

−1.60

−2.60

−3.25

µA

I

OS

Input Offset Current

20

800

1000

nA

R

IN

Common Mode Input Resistance

3

MΩ

C

IN

Common Mode Input Capacitance

2

pF

CMVR Input Common-Mode Voltage

Range

CMRR ≥ 50dB

−5.5

−5.2

−5.1

V

3.8

3.6

4.0

CMRR Common Mode Rejection

Ratio

V

CM

Stepped from −5V to 3.5V

74 95

dB

A

VOL

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

R

L

=2kΩ

88

84

96

dB

V

O

= −4.0V to 4.0V,

R

L

= 150Ω

78

74

82

V

O

Output Swing High

RL=2kΩ,VID= 200mV 4.90 4.96

V

R

L

= 150Ω,VID= 200mV 4.65 4.80

Output Swing Low

R

L

=2kΩ,VID= −200mV −4.96 −4.90

V

R

L

= 150Ω,VID= −200mV −4.80 −4.65

I

SC

Output Short Circuit Current Sourcing to Ground

V

ID

= 200mV (Note 10)

60

35

115

mA

Sinking to Ground V

ID

= −200mV (Note 10)

85

65

145

I

OUT

Output Current VO= 0.5V from either supply

±

75 mA

PSRR Power Supply Rejection Ratio (V

+,V−

) = (4.5V, −4.5V) to (5.5V,

−5.5V)

78 90

dB

I

S

Supply Current (per channel) No Load

2.70

4.50

5.50

mA

LMH6642/6643/6644

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

J(MAX)

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

P

D

=(T

J(MAX)-TA

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

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

S

<

6V at room temperature and below. For V

S

>

6V, allowable short circuit duration is 1.5ms.

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

OS

at temperature extremes by the total temperature change.

Connection Diagrams

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

SOIC-8 and MSOP-8

(LMH6643)

20018561

Top View

20018562

Top View

20018563

Top View

SOIC-14 and TSSOP-14

(LMH6644)

20018568

Top View

LMH6642/6643/6644

www.national.com 6

Typical Performance Characteristics At T

J

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

otherwise specified.

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

20018557

20018551

Closed Loop Gain vs. Frequency for Various Gain

Closed Loop Frequency Response for Various

Temperature

20018535

20018550

Closed Loop Gain vs. Frequency for Various Supplies

Closed Loop Frequency Response for Various

Temperature

20018548

20018534

LMH6642/6643/6644

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