National Semiconductor LMP7717, LMP7718 Technical data

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LMP7717/LMP7718
88 MHz, Precision, Low Noise, 1.8V CMOS Input,
Decompensated Operational Amplifier

November 6, 2007

LMP7717/LMP7718 88 MHz, Precision, Low Noise, 1.8V CMOS Input, Decompensated

Operational Amplifier

General Description

The LMP7717 (single) and the LMP7718 (dual) low noise,
CMOS input operational amplifiers offer a low input voltage
noise density of 5.8 nV/
(LMP7717) of quiescent current. The LMP7717/LMP7718 are
stable at a gain of 10 and have a gain bandwidth (GBW)
product of 88 MHz. The LMP7717/LMP7718 have a supply
voltage range of 1.8V to 5.5V and can operate from a single
supply. The LMP7717/LMP7718 each feature a rail-to-rail
output stage. Both amplifiers are part of the LMP® precision
amplifier family and are ideal for a variety of instrumentation
applications.

The LMP7717 family provides optimal performance in low
voltage and low noise systems. A CMOS input stage, with
typical input bias currents in the range of a few femto-Am­peres, and an input common mode voltage range, which
includes ground, make the LMP7717/LMP7718 ideal for low
power sensor applications where high speeds are needed.

The LMP7717/LMP7718 are manufactured using National’s
advanced VIP50 process. The LMP7717 is offered in either a
5-Pin SOT23 or an 8-Pin SOIC package. The LMP7718 is
offered in either the 8-Pin SOIC or the 8-Pin MSOP.

while consuming only 1.15 mA

Features

(Typical 5V supply, unless otherwise noted)

Input offset voltage ±150 µV (max)

■

Input referred voltage noise 5.8 nV/√Hz

■

Input bias current 100 fA

■

Gain bandwidth product 88 MHz

■

Supply voltage range 1.8V to 5.5V

■

Supply current per channel

■

LMP7717 1.15 mA

—

LMP7718 1.30 mA

—

Rail-to-Rail output swing

■

@ 10 kΩ load 25 mV from rail

—

@ 2 kΩ load 45 mV from rail

—

Guaranteed 2.5V and 5.0V performance

■

Total harmonic distortion 0.04% @1 kHz, 600Ω

■

Temperature range −40°C to 125°C

■

Applications

ADC interface

■

Photodiode amplifiers

■

Active filters and buffers

■

Low noise signal processing

■

Medical instrumentation

■

Sensor interface applications

■

Typical Application

Photodiode Transimpedance Amplifier

LMP® is a registered trademark of National Semiconductor Corporation.

© 2007 National Semiconductor Corporation 300108 www.national.com

30010869

Input Referred Voltage Noise vs. Frequency

30010839

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 2000V

LMP7717/LMP7718

 Machine Model 200V

VIN Differential

Supply Voltage (V+ – V−)

Input/Output Pin Voltage V+ +0.3V, V− −0.3V

Storage Temperature Range −65°C to 150°C
Junction Temperature (Note 3) +150°C

±0.3V

6.0V

Soldering Information

Infrared or Convection (20 sec) 235°C
 Wave Soldering Lead Temp (10 sec) 260°C

Operating Ratings (Note 1)

Temperature Range (Note 3) −40°C to 125°C
Supply Voltage (V+ – V−)

−40°C ≤ TA ≤ 125°C
0°C ≤ TA ≤ 125°C

Package Thermal Resistance (θJA (Note 3))

5-Pin SOT23 180°C/W
8-Pin SOIC 190°C/W
8-Pin MSOP 236°C/W

2.5V Electrical Characteristics (Note 4)

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

Symbol Parameter Conditions Min

(Note 6)

V

OS

TC VOSInput Offset Average Drift

I

B

I

OS

CMRR Common Mode Rejection Ratio

PSRR Power Supply Rejection Ratio

CMVR Input Common-Mode Voltage

A

VOL

V

OUT

Input Offset Voltage ±20 ±180

LMP7717 −1.0

(Note 7)

Input Bias Current VCM = 1.0V

Input Offset Current VCM = 1.0V

Range

Open Loop Gain V

Output Swing High

Output Swing Low

LMP7718 −1.8

−40°C ≤ TA ≤ 85°C

(Notes 8, 9)

−40°C ≤ TA ≤ 125°C

(Note 9)
0V ≤ VCM ≤ 1.4V

2.0V ≤ V+ ≤ 5.5V, VCM = 0V

1.8V ≤ V+ ≤ 5.5V, VCM = 0V
CMRR ≥ 60 dB

CMRR ≥ 55 dB

= 0.15V to 2.2V,

OUT

RL = 2 kΩ to V+/2

V

= 0.15V to 2.2V,

OUT

RL = 10 kΩ to V+/2

RL = 2 kΩ to V+/2

RL = 10 kΩ to V+/2

RL = 2 kΩ to V+/2

RL = 10 kΩ to V+/2

LMP7717 88

LMP7718 84

LMP7717 92

LMP7718 90

83

80

85

80

85 98

−0.3

−0.3

82

80

88

86

0.05 1

0.05 1

.006 0.5

25 70

20 60

30 70

15 60

Typ

(Note 5)

94

100

1.5

98

92

110

95

Max

(Note 6)

±480

±4

25

100

50

1.5

77

66

73

62

2.0V to 5.5V

1.8V to 5.5V

Units

µV

μV/°C

pA

pA

dB

dB

V

dB

mV from

rail

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LMP7717/LMP7718

I

OUT

I

S

Output Short Circuit Current Sourcing to V

VIN = 200 mV (Note 10)

Sinking to V
VIN = –200 mV (Note 10)

Supply Current per Amplifier LMP7717 0.95 1.30

−

36

47

30

+

7.5

15

5

1.65

LMP7718 per channel 1.1 1.5

1.85

SR Slew Rate AV = +10, Rising (10% to 90%)

AV = +10, Falling (90% to 10%)

GBWP Gain Bandwidth Product

e

n

i

n

Input-Referred Voltage Noise f = 1 kHz 6.2

Input-Referred Current Noise f = 1 kHz 0.01

THD+N Total Harmonic Distortion +

AV = +10, RL = 10 kΩ

f = 1 kHz, AV = 1, RL = 600Ω

0.01 %

32

24

88 MHz

Noise

5V Electrical Characteristics (Note 4)

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

Symbol Parameter Conditions Min

(Note 6)

V

OS

TC VOSInput Offset Average Drift

I

B

Input Offset Voltage ±10 ±150

LMP7717 −1.0

(Note 7)

Input Bias Current VCM = 2.0V

LMP7718 −1.8

−40°C ≤ TA ≤ 85°C

(Notes 8, 9)

−40°C ≤ TA ≤ 125°C

I

OS

Input Offset Current VCM = 2.0V

(Note 9)

CMRR Common Mode Rejection Ratio

0V ≤ VCM ≤ 3.7V

85

80

PSRR Power Supply Rejection Ratio

2.0V ≤ V+ ≤ 5.5V, VCM = 0V

85

80

85 98

−0.3

−0.3

82

CMVR Input Common-Mode Voltage

Range

A

VOL

Open Loop Gain V

1.8V ≤ V+ ≤ 5.5V, VCM = 0V
CMRR ≥ 60 dB

CMRR ≥ 55 dB

= 0.3V to 4.7V,

OUT

RL = 2 kΩ to V+/2

LMP7717 88

LMP7718 84

80

V

= 0.3V to 4.7V,

OUT

RL = 10 kΩ to V+/2

LMP7717 92

88

LMP7718 90

86

0.1 1

0.1 1

.01 0.5

Typ

(Note 5)

100

100

4

107

90

110

95

Max

(Note 6)

±450

±4

25

100

50

4

mA

mA

V/μs

nV/

pA/

Units

µV

μV/°C

pA

pA

dB

dB

V

dB

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V

OUT

Output Swing High

RL = 2 kΩ to V+/2

LMP7717 35 70

LMP7718 45 80

25 60

LMP7717/LMP7718

Output Swing Low

RL = 10 kΩ to V+/2

RL = 2 kΩ to V+/2

LMP7717 42 70

LMP7718 50 80

25 60

46

60

38

10.5

21

6.5

I

OUT

I

S

RL = 10 kΩ to V+/2

Output Short Circuit Current Sourcing to V

−

VIN = 200 mV (Note 10)

Sinking to V

+

VIN = –200 mV (Note 10)

Supply Current per Amplifier LMP7717 1.15 1.40

LMP7718 per channel 1.30 1.70

SR Slew Rate AV = +10, Rising (10% to 90%) 35

AV = +10, Falling (90% to 10%) 28

GBWP Gain Bandwidth Product

e

n

i

n

Input-Referred Voltage Noise f = 1 kHz 5.8

Input-Referred Current Noise f = 1 kHz 0.01

THD+N Total Harmonic Distortion +

AV = +10, RL = 10 kΩ

f = 1 kHz, AV = 1, RL = 600Ω

88 MHz

0.01 %

Noise

77

77

66

73

78

66

1.75

2.05

mV from

rail

mA

mA

V/μs

nV/

pA/

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, applicable std. MIL-STD-883, Method 3015.7. Machine Model, applicable std. JESD22-A115-A (ESD MM std. of JEDEC)

Field-Induced Charge-Device Model, applicable std. JESD22-C101-C (ESD FICDM std. of JEDEC).

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

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 such that TJ = TA. No guarantee of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ >
TA.

Note 5: Typical values represent the most likely parametric norm as determined at the time of characterization. Actual typical values may vary over time and will
also depend on the application and configuration. The typical values are not tested and are not guaranteed on shipped production material.

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: Offset voltage average drift is determined by dividing the change in VOS by temperature change.

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

Note 9: Input bias current and input offset current are guaranteed by design

Note 10: The short circuit test is a momentary test, the short circuit duration is 1.5 ms.

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

J(MAX)

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

J(MAX)

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Connection Diagrams

LMP7717/LMP7718

5-Pin SOT23 (LMP7717)

Top View

30010801

8-Pin SOIC (LMP7717)

Top View

8-Pin SOIC/MSOP (LMP7718)

30010885

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

5-Pin SOT23

8-Pin SOIC

8-Pin MSOP

LMP7717MF

AT4A

LMP7717MFX 3k Units Tape and Reel

LMP7717MA

LMP7717MAE 250 Units Tape and Reel

LMP7717MAX 2.5k Units Tape and Reel

LMP7718MA

LMP7718MAE 250 Units Tape and Reel

LMP7718MAX 2.5k Units Tape and Reel

LMP7718MM

LMP7718MMX 3.5k Units Tape and Reel

LMP7717MA

LMP7718MA

AP4A

1k Units Tape and Reel

95 Units/Rail

95 Units/Rail

1k Units Tape and Reel

30010802

MF05ALMP7717MFE 250 Units Tape and Reel

M08A

MUA08ALMP7718MME 250 Units Tape and Reel

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Typical Performance Characteristics Unless otherwise specified, T

VS = V+ - V−, VCM = VS/2.

= 25°C, V– = 0, V+ = 5V,

A

TCVOS Distribution (LMP7717)

LMP7717/LMP7718

TCVOS Distribution (LMP7717)

30010890

Offset Voltage Distribution

30010891

Offset Voltage Distribution

30010892

Supply Current vs. Supply Voltage (LMP7717)

30010805

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VOS vs. V

30010893

CM

30010809

LMP7717/LMP7718

VOS vs. V

CM

VOS vs. Supply Voltage

30010851

VOS vs. V

CM

Slew Rate vs. Supply Voltage

30010811

Input Bias Current vs. V

CM

30010812

30010862

Input Bias Current vs. V

30010852

CM

30010887

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Sourcing Current vs. Supply Voltage

LMP7717/LMP7718

Sinking Current vs. Supply Voltage

30010820

Sourcing Current vs. Output Voltage

30010850

Positive Output Swing vs. Supply Voltage

30010819

Sinking Current vs. Output Voltage

30010854

Negative Output Swing vs. Supply Voltage

30010817

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30010815