Datasheet LMX7701 Datasheet (National Semiconductor)

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LMP7701
Precision, CMOS Input, RRIO, Wide Supply Range
Amplifier

LMP7701 Precision, CMOS Input, RRIO, Wide Supply Range Amplifier

PRELIMINARY

September 2005

General Description

The LMP7701 is a single, low offset voltage, rail-to-rail input
and output precision amplifier with a CMOS input stage and
a wide supply voltage range. The LMP7701 is part of the

™

precision amplifier family and is ideal for sensor

LMP
interface and other instrumentation applications.

±

The guaranteed low offset voltage of less than
along with the guaranteed low input bias current of less than

±

10 pA make the LMP7701 ideal for precision applications.
The LMP7701 is built utilizing VIP50 technology, which al­lows the combination of a CMOS input stage and a 12V
common mode and supply voltage range. This makes the
LMP7701 a great choice in many applications where con­ventional CMOS parts cannot operate under the desired
voltage conditions.

The LMP7701 has a rail-to-rail input stage that significantly
reduces the CMRR glitch commonly associated with rail-to­rail input amplifiers. This is achieved by trimming both sides
of the complimentary input stage, thereby reducing the dif­ference between the NMOS and PMOS offsets. The output
of the LMP7701 swings within 40 mV of either rail to maxi­mize the signal dynamic range in applications requiring low
supply voltage.

The LMP7701 is offered in space saving SOT23-5. This
small package is an ideal solution for area constrained PC
boards and portable electronics.

200 µV

Features

Unless otherwise noted, typical values at VS=5V

n Input offset voltage
n Input bias current 300 fA
n Input voltage noise 12 nV/
n CMRR 100 dB
n Open loop gain 130 dB
n Temperature range –40˚C to 125˚C
n Unity gain bandwidth 2.5 MHz
n Supply current 715 µA
n Supply Voltage Range 2.7V to 12V
n Rail-to-rail input and output

±

200 µV (max)

Applications

n High impedance sensor interface
n Battery powered instrumentation
n High gain amplifiers
n DAC buffer
n Instrumentation amplifier
n Active filters

Typical Application

Precision Current Source

LMP™is a trademark of National Semiconductor Corporation.

© 2005 National Semiconductor Corporation DS201273 www.national.com

20127305

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

LMP7701

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

ESD Tolerance (Note 2)

Junction Temperature (Note 3) +150˚C

Soldering Information

Infrared or Convection (20 sec) 235˚C

Wave Soldering Lead Temp. (10

sec) 260˚C

Human Body Model 2 kV

Machine Model 200V

Differential

V

IN

Supply Voltage (V

=V+–V−) 13.2V

S

Voltage at Input/Output Pins V

+

+ 0.3V, V−− 0.3V

±

300 mV

Input Current 10 mA

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

Operating Ratings (Note 1)

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

Supply Voltage (V

Package Thermal Resistance (θ

5-Pin SOT23 234˚C/W

=V+–V−) 2.7V to 12V

S

(Note 3))

JA

3V Electrical Characteristics (Note 4)

Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 3V, V−= 0V, VCM=V+/2, and R

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

V

OS

TCV

I

B

I

OS

CMRR Common Mode Rejection Ratio 0V ≤ V

Input Offset Voltage

Input Offset Voltage Drift (Note 7)

OS

Input Bias Current (Notes 7, 8) 0.3 10

Input Offset Current 40 fA

≤ 3V 86

CM

Typ

(Note 5)

±

80

PSRR Power Supply Rejection Ratio 2.7V ≤ V+≤ 12V, Vo = V+/2 86

82

CMVR Input Common-Mode Voltage Range CMRR ≥ 80 dB

CMRR ≥ 77 dB

A

VOL

V

O

Large Signal Voltage Gain RL=2kΩ

= 0.3V to 2.7V

V

O

R

=10kΩ

L

= 0.2V to 2.8V

V

O

Output Swing High RL=2kΩ to V+/2 2.92

–0.2

–0.2

100

96

100

96

114

124

2.96

2.88

=10kΩ to V+/2 2.96

R

L

2.97

2.94

Output Swing Low R

=2kΩ to V+/2 0.04 0.06

L

RL=10kΩ to V+/2 0.02 0.04

I

O

Output Short Circuit Current
(Notes 3, 9)

I

S

Supply Current 0.670 1.0

SR Slew Rate (Note 10) A

Sourcing VO=0V

= 100 mV

V

IN

Sinking V
V

IN

= +1, VO=2V

V

=3V

O

= −100 mV

PP

25

15

25

20

10% to 90%

GBW Gain Bandwidth Product 2.5 MHz

THD+N Total Harmonic Distortion + Noise f = 1 kHz, Av = 1, R

e

n

Input-Referred Voltage Noise f = 1 kHz 12 nV/

=1kΩ 0.02 %

L

>

10 kΩ to V+/2.

L

Max

(Note 6)

37

±

1

±

200

±

500

±

5 µV/˚C

300

98

98

3.2

3.2

0.08

0.05

42

42

1.2

0.9 V/µs

Units

µV

pA

dB

dB

V

dB

V

V

mA

mA

www.national.com 2

3V Electrical Characteristics (Note 4) (Continued)

Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 3V, V−= 0V, VCM=V+/2, and R

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

i

n

Input-Referred Current Noise f = 100 kHz 1 fA/

Typ

(Note 5)

>

10 kΩ to V+/2.

L

Max

(Note 6)

Units

5V Electrical Characteristics (Note 4)

Typ

±

37

±

100

98

119

130

4.94

4.96

66

76

1.0

L

1

>

10 kΩ to V+/2.

Max

(Note 6)

±

200

±

500

±

5 µV/˚C

300

5.2

5.2

0.09

0.05

1.2

Units

µV

pA

dB

dB

V

dB

V

V

mA

mA

V/µs

Unless otherwise specified, all limits are guaranteed for T = 25˚C, V+= 5V, V−= 0V, VCM=V+/2, and R

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

V

OS

TCV

I

B

I

OS

Input Offset Voltage

Input Offset Voltage Drift (Note 7)

OS

Input Bias Current (Notes 7, 8) 0.3 10

Input Offset Current 40 fA

CMRR Common Mode Rejection Ratio 0V ≤ V

≤ 5V 88

CM

(Note 6)

(Note 5)

83

+

PSRR Power Supply Rejection Ratio 2.7V ≤ V

≤ 12V, Vo = V+/2 86

82

CMVR Input Common-Mode Voltage Range CMRR ≥ 80 dB

CMRR ≥ 78 dB

A

VOL

V

O

Large Signal Voltage Gain RL=2kΩ

= 0.3V to 4.7V

V

O

R

=10kΩ

L

= 0.2V to 4.8V

V

O

Output Swing High RL=2kΩ to V+/2 4.89

–0.2

–0.2

100

96

100

96

4.87

=10kΩ to V+/2 4.95

R

L

4.93

Output Swing Low RL=2kΩ to V+/2 0.05 0.08

=10kΩ to V+/2 0.03 0.04

R

L

I

O

Output Short Circuit Current
(Notes 3, 9)

I

S

Supply Current 0.715 1.0

SR Slew Rate (Note 10) A

Sourcing VO=0V

= 100 mV

V

IN

Sinking V
V

IN

= +1, VO=4V

V

=5V

O

= −100 mV

PP

40

28

40

28

10% to 90%

GBW Gain Bandwidth Product 2.5 MHz

THD+N Total Harmonic Distortion + Noise f = 1 kHz, Av = 1, R

e

n

i

n

Input-Referred Voltage Noise f = 1 kHz 12 nV/

Input-Referred Current Noise f = 100 kHz 1 fA/

=1kΩ 0.02 %

L

LMP7701

www.national.com3

±

5V Electrical Characteristics (Note 4)

Typ

±

37

±

>

10 kΩ to VCM.

L

Max

(Note 6)

±

200

±

500

1

±

5 µV/˚C

Unless otherwise specified, all limits are guaranteed for TA= 25˚C, V+= 5V, V−=–5V,VCM=0, and R

LMP7701

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Min

(Note 6)

V

OS

TCV

I

B

Input Offset Voltage

Input Offset Voltage Drift (Note 7)

OS

Input Bias Current (Notes 7, 8) 0.3 10

(Note 5)

300

I

OS

CMRR Common Mode Rejection Ratio –5V ≤ V

Input Offset Current 40 fA

≤ 5V 92

CM

110

88

PSRR Power Supply Rejection Ratio 2.7V ≤ V

≤ 12V, Vo = V

CM

86

98

+

82

CMVR Input Common-Mode Voltage

Range

A

VOL

V

O

Large Signal Voltage Gain RL=2kΩ

Output Swing High RL=2kΩ to V

CMRR ≥ 80 dB
CMRR ≥ 78dB

= – 4.7V to 4.7V

V

O

R

=10kΩ

L

= – 4.8V to 4.8V

V

O

CM

–5.2

–5.2

100

98

100

98

4.85

5.2

5.2

121

134

4.91

4.83

=10kΩ to V

R

L

CM

4.92

4.96

4.90

Output Swing Low R

=2kΩ to V

L

CM

−4.91 −4.87

-4.85

=10kΩ to V

R

L

CM

−4.96 −4.95

-4.94

I

O

I

S

Output Short Circuit Current
(Notes 3, 9)

Sourcing VO=–5V

= 100 mV

V

IN

Sinking V
V

IN

=5V

O

= −100 mV

Supply Current 0.790 1.1

50

35

50

35

86

84

1.3

SR Slew Rate (Note 10) A

= +1, VO=9V

V

PP

1.1 V/µs

10% to 90%

GBW Gain Bandwidth Product 2.5 MHz

THD+N Total Harmonic Distortion + Noise f = 1 kHz, Av = 1, R

e

n

i

n

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: 1.5 kΩ in series with 100 pF. Machine Model: 0Ω in series with 200 pF.

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

P

D

Note 4: 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.

Note 5: Typical values represent the parametric norm at the time of characterization.

Note 6: 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 7: Guaranteed by design.

Note 8: Positive current corresponds to current flowing into the device.

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

Note 10: The number specified is the slower of positive and negative slew rates.

Input-Referred Voltage Noise f = 1 kHz 12 nV/

Input-Referred Current Noise f = 100 kHz 1 fA/

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

=(T

J(MAX)-TA

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

J(MAX)

=1kΩ 0.02 %

L

Units

µV

pA

dB

dB

V

dB

V

V

mA

mA

www.national.com 4

Connection Diagram

LMP7701

5-Pin SOT23

Top View

20127302

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

5-Pin SOT-23

LMP7701MF

LMP7701MFX 3k Units Tape and Reel

AC2A

1k Units Tape and Reel

MF05A

www.national.com5

Physical Dimensions inches (millimeters) unless otherwise noted

5-Pin SOT23

NS Package Number MF05A

National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves
the right at any time without notice to change said circuitry and specifications.

For the most current product information visit us at www.national.com.

LIFE SUPPORT POLICY

LMP7701 Precision, CMOS Input, RRIO, Wide Supply Range Amplifier

NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS
WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR
CORPORATION. As used herein:

1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body, or
(b) support or sustain life, and whose failure to perform when
properly used in accordance with instructions for use

2. A critical component is any component of a life support
device or system whose failure to perform can be reasonably
expected to cause the failure of the life support device or
system, or to affect its safety or effectiveness.

provided in the labeling, can be reasonably expected to result
in a significant injury to the user.

BANNED SUBSTANCE COMPLIANCE

National Semiconductor manufactures products and uses packing materials that meet the provisions of the Customer Products
Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain
no ‘‘Banned Substances’’ as defined in CSP-9-111S2.

Leadfree products are RoHS compliant.

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