National Semiconductor LMP7711, LMP7712 Technical data

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LMP7711/LMP7712 Single and Dual Precision, 17 MHz, Low Noise, CMOS Input Amplifiers

LMP7711/LMP7712 Precision, 17 MHz, Low Noise, CMOS Input Amplifiers

November 2005

General Description

The LMP7711/LMP7712 are single and dual low noise, low offset, CMOS input, rail-to-rail output precision amplifiers with a high gain bandwidth product and an enable pin. The LMP7711/LMP7712 are part of the LMP family and are ideal for a variety of instrumentation applications.

Utilizing a CMOS input stage, the LMP7711/LMP7712 achieve an input bias current of 100 fA, an input referred voltage noise of 5.8 nV/ less than LMP7712 superior choices for precision applications.

Consuming only 1.15 mA of supply current, the LMP7711 offers a high gain bandwidth product of 17 MHz, enabling accurate amplification at high closed loop gains.

The LMP7711/LMP7712 have a supply voltage range of

1.8V to 5.5V, which makes these ideal choices for portable low power applications with low supply voltage requirements. In order to reduce the already low power consumption the LMP7711/LMP7712 have an enable function. Once in shutdown, the LMP7711/LMP7712 draw only 140 nA of supply current.

The LMP7711/LMP7712 are built with National’s advanced VIP50 process technology. The LMP7711 is offered in a 6-pin TSOT23 package and the LMP7712 is offered in a 10-pin MSOP.

±

150 µV. These features make the LMP7711/

, and an input offset voltage of

™

precision amplifier

Features

Unless otherwise noted, typical values at VS=5V.

n Input offset voltage n Input bias current 100 fA n Input voltage noise 5.8 nV/ n Gain bandwidth product 17 MHz n Supply current (LMP7711) 1.15 mA n Supply current (LMP7712) 1.30 mA n Supply voltage range 1.8V to 5.5V n THD+N n Operating temperature range −40 n Rail-to-rail output swing n Space saving TSOT23 package (LMP7711) n MSOP-10 package (LMP7712)

@

f = 1 kHz 0.001%

±

150 µV (max)

o

C to 125˚C

Applications

n Active filters and buffers n Sensor interface applications n Transimpedance amplifiers

Typical Performance

Offset Voltage Distribution Input Referred Voltage Noise

20150322

LMP™is a trademark of National Semiconductor Corporation.

20150339

Absolute Maximum Ratings (Note 1)

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

Soldering Information

Infrared or Convection (20 sec) 235˚C

Wave Soldering Lead Temp. (10

sec) 260˚C

ESD Tolerance (Note 2)

LMP7711/LMP7712

Human Body Model 2000V

Machine Model 200V

Differential

V

IN

Supply Voltage (V

Voltage on Input/Output Pins V

=V+–V−) 6.0V

S

+

+0.3V, V−−0.3V

Storage Temperature Range −65˚C to 150˚C

Junction Temperature (Note 3) +150˚C

±

0.3V

Operating Ratings (Note 1)

Temperature Range (Note 3) −40˚C to 125˚C

Supply Voltage (V

0˚C ≤ T

A

−40˚C ≤ T

Package Thermal Resistance (θ

=V+–V−)

S

≤ 125˚C 1.8V to 5.5V

≤ 125˚C 2.0V to 5.5V

A

(Note 3))

JA

6-Pin TSOT23 170˚C/W

10-Pin MSOP 236˚C/W

2.5V Electrical Characteristics

Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 2.5V, V−=0V,VO=VCM=V+/2, VEN=V+. Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 5)

V

OS

TC V

I

B

Input Offset Voltage

Input Offset Voltage Drift

OS

(Note 6)

Input Bias Current VCM=1V

LMP7711 –1

LMP7712 –1.75

(Notes 7, 8)

I

OS

Input Offset Current VCM=1V

(Note 8)

CMRR Common Mode Rejection Ratio 0V ≤ V

≤ 1.4V 83

CM

80

PSRR Power Supply Rejection Ratio 2.0V ≤ V+≤ 5.5V

−

= 0V, VCM=0

CMVR Input Common-Mode Voltage

Range

A

VOL

V

O

Large Signal Voltage Gain LMP7711, VO= 0.15 to 2.2V

Output Swing High RL=2kΩ to V+/2 70

V

1.8V ≤ V V

CMRR ≥ 80 dB CMRR ≥ 78 dB

R

LMP7712, V R

LMP7711, V R

LMP7712, V R

+

−

L

≤ 5.5V

= 0V, VCM=0

=2kΩ to V+/2

O

=2kΩ to V+/2

O

=10kΩ to V+/2

O

=10kΩ to V+/2

= 0.15 to 2.2V

85

80

85 98

−0.3

–0.3

88

82

84

80

92

88

90

86

77

RL=10kΩ to V+/2 60

66

Output Swing Low RL=2kΩ to V+/2 30 70

=10kΩ to V+/2 15 60

R

L

Typ

(Note 4)

±

20

(Note 5)

0.05 50

0.006 25

100

98

92

110

95

25

20

Max

±

180

±

480

±

4 µV/˚C

100

50

1.5

73

62

Units

µV

pA

dB

V

dB

mV

from V

mV

+

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2.5V Electrical Characteristics (Continued)

Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 2.5V, V−=0V,VO=VCM=V+/2, VEN=V+. Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 5)

I

O

Output Short Circuit Current Sourcing to V

−

VIN= 200 mV (Note 9)

Sinking to V

+

VIN= −200 mV (Note 9)

I

S

Supply Current LMP7711

Enable Mode V

≥ 2.1

EN

36

30

7.5

5.0

LMP7712 (per channel) Enable Mode V

≥ 2.1

EN

Shutdown Mode (per channel)

≤ 0.4

V

EN

SR Slew Rate A

= +1, Rising (10% to 90%) 8.3

V

A

= +1, Falling (90% to 10%) 10.3

V

GBW Gain Bandwidth Product 14 MHz

e

n

Input-Referred Voltage Noise f = 400 Hz 6.8

f = 1 kHz 5.8

i

n

t

on

t

off

V

EN

Input-Referred Current Noise f = 1 kHz 0.01 pA/

Turn-on Time 140 ns

Turn-off Time 1000 ns

Enable Pin Voltage Range Enable Mode 2.1 2 - 2.5

Shutdown Mode 0 - 0.5 0.4

I

EN

THD+N Total Harmonic Distortion +

Enable Pin Input Current VEN= 2.5V (Note 7) 1.5 3.0

V

= 0V (Note 7) 0.003 0.1

EN

Noise

f = 1 kHz, A

= 0.9 V

V

O

f = 1 kHz, A

= 0.9 V

V

O

=1,RL= 100 kΩ

V

PP

=1,RL= 600Ω

V

PP

Typ

(Note 4)

(Note 5)

52

15

0.95 1.30

1.10 1.50

0.03 1

0.003

0.004

Max

1.65

1.85

4

Units

mA

µA

V/µs

nV/

V

µA

%

LMP7711/LMP7712

5V Electrical Characteristics

Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 5V, V−= 0V, VCM=V+/2, VEN=V+. Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 5)

V

OS

TC V

I

B

I

OS

CMRR Common Mode Rejection

PSRR Power Supply Rejection Ratio 2.0V ≤ V+≤ 5.5V

CMVR Input Common-Mode Voltage

Input Offset Voltage

Input Offset Average Drift

OS

(Note 6)

LMP7711 –1

LMP7712 –1.75

Input Bias Current (Notes 7, 8) 0.1 50

Input Offset Current (Note 8) 0.01 25

0V ≤ V

Ratio

≤ 3.7V 85

CM

82

85

−

Range

= 0V, VCM=0

V

1.8V ≤ V V

+

−

≤ 5.5V

= 0V, VCM=0

CMRR ≥ 80 dB CMRR ≥ 78 dB

80

85 98

−0.3

–0.3

Typ

(Note 4)

±

10

100

Max

(Note 5)

±

150

±

450

±

4 µV/˚C

100

50

4

www.national.com3

Units

µV

pA

dB

V

5V Electrical Characteristics (Continued)

A

VOL

LMP7711/LMP7712

V

O

Large Signal Voltage Gain LMP7711, VO= 0.3 to 4.7V

=2kΩ to V+/2

R

L

LMP7712, V

=2kΩ to V+/2

R

L

LMP7711, V

=10kΩ to V+/2

R

L

LMP7712, V

=10kΩ to V+/2

R

L

= 0.3 to 4.7V

O

= 0.3 to 4.7V

O

= 0.3 to 4.7V

O

88

82

84

80

92

88

90

86

Output Swing High RL=2kΩ to V+/2 70

107

90

110

95

32

77

RL=10kΩ to V+/2 60

22

66

Output Swing Low R

=2kΩ to V+/2

L

(LMP7711)

=2kΩ to V+/2

R

L

(LMP7712)

=10kΩ to V+/2 20 60

R

L

42 70

73

50 75

78

62

I

O

I

S

Output Short Circuit Current Sourcing to V

Supply Current LMP7711

SR Slew Rate A

−

VIN= 200 mV (Note 9)

Sinking to V

+

VIN= −200 mV (Note 9)

Enable Mode V

≥ 4.6

EN

LMP7712 (per channel) Enable Mode V

Shutdown Mode V

≥ 4.6

EN

≤ 0.4

EN

(per channel)

= +1, Rising (10% to 90%) 6.0 9.5

V

A

= +1, Falling (90% to 10%) 7.5 11.5

V

46

38

10.5

6.5

66

23

1.15 1.40

1.75

1.30 1.70

2.05

0.14 1

4

GBW Gain Bandwidth Product 17 MHz

e

n

Input-Referred Voltage Noise f = 400 Hz 7.0

f = 1 kHz 5.8

i

n

t

on

t

off

V

EN

Input-Referred Current Noise f = 1 kHz 0.01 pA/

Turn-on Time 110 ns

Turn-off Time 800 ns

Enable Pin Voltage Range Enable Mode 4.6 4.5 – 5

Shutdown Mode 0 – 0.5 0.4

I

EN

THD+N Total Harmonic Distortion +

Enable Pin Input Current VEN= 5V (Note 7) 5.6 10

V

= 0V (Note 7) 0.005 0.2

EN

Noise

f = 1 kHz, A

=4V

V

O

f = 1 kHz, A

=4V

V

O

=1,RL= 100 kΩ

V

PP

=1,RL= 600Ω

V

PP

0.001

0.004

dB

mV

from V

mV

mA

µA

V/µs

nV/

V

µA

%

+

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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 Tables.

Note 2: Human Body Model is 1.5 kΩ in series with 100 pF. Machine Model is 0Ω in series with 200 pF.

Note 3: The maximum power dissipation is a function of T

P

=(T

D

J(MAX)-TA

Note 4: Typical values represent the most likely parametric norm at the time of characterization.

Note 5: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlations using the Statistical Quality

Control (SQC) method.

Note 6: Offset voltage average drift is determined by dividing the change in V

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

Note 8: Guaranteed by design.

Note 9: The short circuit test is a momentary open loop test.

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

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

J(MAX)

at the temperature extremes by the total temperature change.

OS

Connection Diagrams

6-Pin TSOT23 10-Pin MSOP

LMP7711/LMP7712

Top View

20150301

Top View

20150302

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

6-Pin TSOT23

10-Pin MSOP

LMP7711MK

LMP7711MKX 3k Units Tape and Reel

LMP7712MM

LMP7712MMX 3.5k Units Tape and Reel

AC3A

AD3A

1k Units Tape and Reel

MK06A

MUB10A

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Typical Performance Characteristics Unless otherwise noted: T

=V+.

Offset Voltage Distribution TCV

LMP7711/LMP7712

= 25˚C, VS= 5V, VCM=VS/2, V

A

Distribution (LMP7711)

OS

EN

20150381

Offset Voltage Distribution TCVOSDistribution (LMP7712)

20150322 20150380

Offset Voltage vs. V

CM

Offset Voltage vs. V

CM

20150303

20150310

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20150311