NSC LMH6672MRX, LMH6672MR, LMH6672MDC, LMH6672MAX, LMH6672MA Datasheet

LMH6672
Dual, High Output Current, High Speed Op Amp

General Description

The LMH6672 is a low cost, dual high speed op amp capable
of driving signals to within 1V of the power supply rails. It
features the highoutput drive with low distortion required for
the demanding application of a single supply xDSL line
driver.

When connected as a differential output driver,theLMH6672
can drive a 50Ω load to 16.8V

PP

swing with only −93dBc
distortion, fully supporting the peak upstream power levels
for upstream full-rate ADSL. The LMH6672 is fully specified
for operation with 5V and 12V supplies. Ideal for PCI modem
cards and xDSL modems.

Applications

n ADSL PCI modem cards
n xDSL external modems
n Line drivers

Features

n High Output Drive

19.2V

PP

differential output voltage, RL=50Ω

9.6V

PP

single-ended output voltage, RL=25Ω

n High Output Current

±

200mA@VO=9

VPP,VS

= 12V

n Low Distortion

93dB SFDR

@

100KHz, VO= 8.4VPP,RL=25Ω

92dB SFDR

@

1MHz, VO=2VPP,RL= 100Ω

n High Speed

130MHz 3dB bandwidth (G = 2)
160V/µs slew rate

n Low Noise

4.5nV/

: input noise voltage

1.7pA/

: input noise current

n Low supply current: 6.2mA/amp
n Single-supply operation: 5V to 12V
n Available in 8-pin SOIC, PSOP and LLP

Connection Diagram

8-Pin SOIC/PSOP/LLP

20016602

Top View

Typical Application

20016601

Figure 1

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

8-Pin SOIC LMH6672MA LMH6672MA Rails M08A

LMH6672MAX LMH6672MA 2.5k Units Tape and Reel

8-Pin PSOP LMH6672MR LMH6672MR Rails MRA08A

LMH6672MRX LMH6672MR 2.5k Units Tape and Reel

8-Pin LLP LMH6672LD L6672LD 1k Units Tape and Reel LDC08A

LMH6672LDX L6672LD 4.5k Units Tape and Reel

January 2002

LMH6672 Dual, High Output Current, High Speed Op Amp

© 2002 National Semiconductor Corporation DS200166 www.national.com

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 2)

Human Body Model 2kV
Machine Model 200V

V

IN

Differential

±

1.2V
Output Short Circuit Duration (Note 2)
Supply Voltage (V

+−V−

) 13.2V

Voltage at Input/Output pins V

+

+0.8V, V−−0.8V
Storage Temperature Range −65˚C to +150˚C
Junction Temperature +150˚C (Note 4)

Soldering Information

Infrared or Convection (20 sec) 235˚C
Wave Soldering (10 sec) 260˚C

Operating Ratings (Note 1)

Supply Voltage (V

+-V−

)

±

2.5V to±6.5V
Junction Temperature Range −40˚C to 150˚C
Package Thermal Resistance (θ

JA

)
8-pin SOIC 172˚C/W
8-pin PSOP 58.6˚C/W
8-pin LLP 40˚C/W

Electrical Characteristics

TJ= 25˚C, G = +2, VS=±2.5 to±6V, Rf=RIN= 470Ω,RL= 100Ω; Unless otherwise specified.

Symbol Parameter Conditions Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

Dynamic Performance

−3dB Bandwidth 130 MHz

0.1dB Bandwidth V

S

=±6V 22 MHz

Slew Rate V

S

=±6V, 4V Step, 10-90% 170 V/µs

Rise and Fall Time V

S

= 6V, 4V Step, 10-90% 18.5 ns

Distortion and Noise Response

2

nd

Harmonic Distortion VO= 8.4VPP, f = 100KHz, RL=25Ω −95 dBc

V

O

= 8.4VPP, f = 1MHz, RL= 100Ω −92 dBc

3

rd

Harmonic Distortion VO= 8.4VPP, f = 100KHz, RL=25Ω −93 dBc

V

O

=2VPP, f = 1MHz, RL= 100Ω −95 dBc
Input Noise Voltage f = 100KHz 4.5 nV

Input Noise Current f = 100KHz 1.7 pA/

Input Characteristics

V

OS

Input Offset Voltage TJ= −40˚C to 150˚C −5.5 −0.2 5.5

mV

−4 −0.2 4

I

B

Input Bias Current TJ= −40˚C to 150˚C 8 14 µA

I

OS

Input Offset Current TJ= −40˚C to 150˚C −2.1 0 2.1 µA

CMVR Common Voltage Range V

S

=±6V −6.0 4.5 V

CMRR Common-Mode Rejection Ratio V

S

=±6V, TJ= −40˚C to 150˚C 150 9.5 µV/V

Transfer Characteristics

A

VOL

Voltage Gain RL= 1k, TJ= −40˚C to 150˚C 1.0 2.5 V/mV

R

L

=25Ω,TJ= −40˚C to 150˚C 0.67 1.7 V/mV

Output Swing R

L

=25Ω,VS=±6V −4.5

±

4.8 4.5
V

R

L

=25Ω,TJ= −40˚C to 150˚C,

V

S

=±6V

−4.4

±

4.8 4.4

Output Swing R

L

= 1k, VS=±6V −4.8

±

4.8 4.8
V

R

L

= 1k, TJ= −40˚C to 150˚C,

V

S

=±6V

−4.7

±

4.8 4.7

I

SC

Output Current (Note 3) VO=0,VS=±6V 400 788 mA

V

O

=0,VS=±6V,

T

J

= −40˚C to 150˚C

260 600 mA

Power Supply

LMH6672

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Electrical Characteristics (Continued)

TJ= 25˚C, G = +2, VS=±2.5 to±6V, Rf=RIN= 470Ω,RL= 100Ω; Unless otherwise specified.

Symbol Parameter Conditions Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

I

S

Supply Current/Amp VS=±6V 8

mA

V

S

=±6V, TJ= −40˚C to 150˚C 6.2 9

PSRR Power Supply Rejection Ratio V

S

=±2.5V to±6V,

T

J

= −40˚C to 150˚C

72 78 dB

±

2.5V Electrical Characteristics

TJ= 25˚C, G = +2, VS=±2.5 to±6V, Rf=RIN= 470Ω,RL= 100Ω; Unless otherwise specified.

Symbol Parameter Conditions Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

Dynamic Performance

−3dB Bandwidth 125 MHz

0.1dB Bandwidth 32 MHz
Slew Rate 0.4V Step, 10-90% 115 V/µs
Rise and Fall Time 0.4V Step, 10-90% 2.75 ns

Distortion and Noise Response

2

nd

Harmonic Distortion VO=2VPP, f = 100KHz, RL=25Ω −85 dBc

V

O

=2VPP, f = 1MHz, RL= 100Ω −87 dBc

3

rd

Harmonic Distortion VO=2VPP, f = 100KHz, RL=25Ω −90 dBc

V

O

=2VPP, f = 1MHz, RL= 100Ω −88 dBc

Input Characteristics

V

OS

Input Offset Voltage TJ= −40˚C to 150˚C −5.5 5.5

mV

−4.0 1.1 4.0

I

B

Input Bias Current TJ= −40˚C to 150˚C 8.0 14 µA
CMVR Common-Mode Voltage Range −2.5 1.0 V
CMRR Common-Mode Rejection Ratio T

J

= −40˚C to 150˚C 150 57 µV/V

Transfer Characteristics

A

VOL

Voltage Gain RL=25Ω,TJ= −40˚C to 150˚C 0.67 1.54

V/mV

R

L

= 1k, TJ= −40˚C to 150˚C 1.0 2.0

Output Characteristics

V

O

Output Voltage Swing RL=25Ω 1.20 1.45

VR

L

=25Ω,TJ= −40˚C to 150˚C 1.10 1.35

R

L

= 1k 1.30 1.60

R

L

= 1k, TJ= −40˚C to 150˚C 1.25 1.50

Power Supply

I

S

Supply Current/Amp 8.0

mA

T

J

= −40˚C to 150˚C 5.6 9.0

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. Machine model, 200Ω in series with 100pF.
Note 3: Shorting the output to either supply or ground will exceed the absolute maximum T

J

and can result in failure.

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

J(MAX)

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

(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, characterization or statistical analysis.

LMH6672

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Typical Performance Characteristics At T

J

= 25˚C, RF= 470Ω gain = +2, RL= 100Ω. Unless oth-

erwise specified.

Output Swing R

L

=25Ω,1kΩ@−40˚C, 25˚C, 85˚C Positive Output Swing into 1kΩ

20016635 20016645

Negative Output Swing into 1kΩ Positive Output Swing into 25Ω

20016646

20016644

Negative Output Swing into 25Ω +V

OUT

vs. I

LOAD

20016647 20016640

LMH6672

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Typical Performance Characteristics At T

J

= 25˚C, RF= 470Ω gain = +2, RL= 100Ω. Unless

otherwise specified. (Continued)

−V

OUT

vs. I

LOAD

+V

OUT

vs. I

LOAD

20016641 20016643

−V

OUT

vs. I

LOAD

Supply Current vs. Supply Voltage

20016642

20016632

Sourcing Current vs. Supply Voltage Sinking Current vs. Supply Voltage

20016633 20016634

LMH6672

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