NSC LMV981MFX, LMV981MDA, LMV981BLX, LMV981BL, LMV981MWC Datasheet

LMV981 Single / LMV982 Dual

1.8V, RRIO Operational Amplifiers with Shutdown

General Description

LMV981/LMV982 are low voltage, low power operational
amplifiers. LMV981/LMV982 are guaranteed to operate from
+1.8V to +5.0V supply voltages and have rail-to-rail input
and output. LMV981/LMV982 input common mode voltage
extends 200mV beyond the supplies which enables user
enhanced functionality beyond the supply voltage range.
The output can swing rail-to-rail unloaded and within 105mV
from the rail with 600Ω load at 1.8V supply. LMV981/
LMV982 are optimized to work at 1.8V which make them
ideal for portable two-cell battery powered systems and
single cell Li-Ion systems.

LMV981/LMV982 offer a shutdown pin that can be used to
disable the device and reduce the supply current. The device
is in shutdown when the SHDN-pin = low.

LMV981/LMV982 exhibit excellent speed-power ratio,
achieving 1.4MHz gain bandwidth product at 1.8V supply
voltage with very low supply current. LMV981/LMV982 are
capable of driving a 600Ω load and up to 1000pF capacitive
load with minimal ringing. LMV981/LMV982 have a high DC
gain of 101dB, making them suitable for low frequency ap­plications.

LMV981 is offered in space saving 6-Bump micro SMD,
SC70-6 and SOT23-6 packages. The 6-Bump micro SMD
package has only a 1.006mm x 1.514mm x 0.945mm foot­print. LMV982 is offered in space saving MSOP-10 package.
These small packages are ideal solutions for area con­strained PC boards and portable electronics such as cellular
phones and PDAs.

Features

(Typical 1.8V Supply Values; Unless Otherwise Noted)

n Guaranteed 1.8V, 2.7V and 5V specifications
n Output swing

— w/600Ω load 80mV from rail
— w/2kΩ load 30mV from rail

n V

CM

200mV beyond rails

n Supply current (per channel) 100µA
n Gain bandwidth product 1.4MHz
n Maximum V

OS

4.0mV

n Gain w/600Ω load 101dB
n Ultra tiny package micro SMD 1.0mm x 1.5mm
n Turn-on time from shutdown 19µs
n Temperature range −40˚C to 125˚C

Applications

n Industrial and automotive
n Consumer communication
n Consumer computing
n PDAs
n Portable audio
n Portable/battery-powered electronic equipment
n Supply current monitoring
n Battery monitoring

Typical Application

200214H0

December 2002

LMV981 Single / LMV982 Dual 1.8V, RRIO Operational Amplifiers with Shutdown

© 2002 National Semiconductor Corporation DS200214 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)

Machine Model 200V

Human Body Model 2000V

Differential Input Voltage

±

Supply Voltage

Supply Voltage (V

+–V−

) 5.5V

Output Short Circuit to V

+

(Note 3)

Output Short Circuit to V

−

(Note 3)

Storage Temperature Range −65˚C to 150˚C

Junction Temperature (Note 4) 150˚C

Mounting Temp.

Infrared or Convection (20 sec) 235˚C

Operating Ratings (Note 1)

Supply Voltage Range 1.8V to 5.0V

Temperature Range −40˚C to 125˚C

Thermal Resistance (θ

JA

)

6-Bump micro SMD 286˚C/W

SC70-6 414˚C/W

SOT23-6 265˚C/W

MSOP-10 235˚C/W

1.8V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 1.8V, V−= 0V, VCM=V+/2, VO=V+/2,
R

L

>

1MΩ and SHDN tied to V+. Boldface limits apply at the temperature extremes. See (Note 10).

Symbol Parameter Condition Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

V

OS

Input Offset Voltage LMV981 (Single) 1 4

6

mV

LMV982 (Dual) 1 5.5

7.5

TCV

OS

Input Offset Voltage Average
Drift

5.5 µV/˚C

I

B

Input Bias Current 15 35

50

nA

I

OS

Input Offset Current 13 25

40

nA

I

S

Supply Current (per channel) 103 185

205

µA

In Shutdown LMV981 (Single) 0.156 1

2

LMV982 (Dual) 0.178 3.5

5

CMRR Common Mode Rejection

Ratio

LMV981, 0 ≤ V

CM

≤ 0.6V

1.4V ≤ V

CM

≤ 1.8V

(Note 8)

60

55

78

dBLMV982, 0 ≤ V

CM

≤ 0.6V

1.4V ≤ V

CM

≤ 1.8V (Note 8)

55

50

76

−0.2V ≤ V

CM

≤ 0V

1.8V ≤ V

CM

≤ 2.0V

50 72

PSRR Power Supply Rejection

Ratio

1.8V ≤ V

+

≤ 5V 75

70

100 dB

CMVR Input Common-Mode Voltage

Range

For CMRR
Range ≥ 50dB

T

A

= 25˚C V−−0.2 −0.2 to 2.1 V++0.2

V

T

A

= −40˚C to

85˚C

V

−

V

+

TA= 125˚C V−+0.2 V+−0.2

LMV981/LMV982

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1.8V DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 1.8V, V−= 0V, VCM=V+/2, VO=V+/2,
R

L

>

1MΩ and SHDN tied to V+. Boldface limits apply at the temperature extremes. See (Note 10).

Symbol Parameter Condition Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

A

V

Large Signal Voltage Gain
LMV981 (Single)

RL= 600Ω to 0.9V,
V

O

= 0.2V to 1.6V, VCM= 0.5V

77

73

101

dB

R

L

=2kΩ to 0.9V,

V

O

= 0.2V to 1.6V, VCM= 0.5V

80

75

105

Large Signal Voltage Gain
LMV982 (Dual)

R

L

= 600Ω to 0.9V,

V

O

= 0.2V to 1.6V, VCM= 0.5V

75

72

90

dB

R

L

=2kΩ to 0.9V,

V

O

= 0.2V to 1.6V, VCM= 0.5V

78

75

100

V

O

Output Swing RL= 600Ω to 0.9V

V

IN

=±100mV

1.65

1.63

1.72

V

0.077 0.105

0.120

R

L

=2kΩ to 0.9V

V

IN

=±100mV

1.75

1.74

1.77

0.024 0.035

0.04

I

O

Output Short Circuit Current Sourcing, VO=0V

V

IN

= 100mV

4

3.3

8

mA

Sinking, V

O

= 1.8V

V

IN

= −100mV

7

5

9

Ton Turn-on Time from Shutdown 19 µs

V

SHDN

Turn-on Voltage to enable
part

1.0
V

Turn-off Voltage 0.55

1.8V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 1.8V, V−= 0V, VCM=V+/2, VO=V+/2,
R

L

>

1MΩ and SHDN tied to V+. Boldface limits apply at the temperature extremes. See (Note 10).

Symbol Parameter Conditions Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

SR Slew Rate (Note 7) 0.35 V/µs

GBW Gain-Bandwidth Product 1.4 MHz

Φ

m

Phase Margin 67 deg

G

m

Gain Margin 7dB

e

n

Input-Referred Voltage Noise f = 1kHz, VCM= 0.5V 60

i

n

Input-Referred Current Noise f = 1kHz 0.06

THD Total Harmonic Distortion f = 1kHz, AV=+1

R

L

= 600Ω,VIN=1V

PP

0.023 %

Amp-to-Amp Isolation (Note 9) 123 dB

LMV981/LMV982

www.national.com3

2.7V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 2.7V, V−= 0V, VCM=V+/2, VO=V+/2,
R

L

>

1MΩ and SHDN tied to V+. Boldface limits apply at the temperature extremes. See (Note 10).

Symbol Parameter Condition Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

V

OS

Input Offset Voltage LMV981 (Single) 1 4

6

mV

LMV982 (Dual) 1 6

7.5

mV

TCV

OS

Input Offset Voltage Average
Drift

5.5 µV/˚C

I

B

Input Bias Current 15 35

50

nA

I

OS

Input Offset Current 8 25

40

nA

I

S

Supply Current (per channel) 105 190

210

µA

In Shutdown LMV981 (Single) 0.061 1

2

LMV982 (Dual) 0.101 3.5

5

CMRR Common Mode Rejection

Ratio

LMV981, 0 ≤ V

CM

≤ 1.5V

2.3V ≤ V

CM

≤ 2.7V (Note 8)

60

55

81

dB

LMV982, 0 ≤ V

CM

≤ 1.5V

2.3V ≤ V

CM

≤ 2.7V (Note 8)

55

50

80

−0.2V ≤ V

CM

≤ 0V

2.7V ≤ V

CM

≤ 2.9V

50 74

PSRR Power Supply Rejection

Ratio

1.8V ≤ V

+

≤ 5V

V

CM

= 0.5V

75

70

100 dB

CMVR Input Common-Mode Voltage

Range

For CMRR
Range ≥ 50dB

T

A

= 25˚C V−−0.2 −0.2 to 3.0 V++0.2

V

T

A

= −40˚C to

85˚C

V

−

V

+

TA= 125˚C V−+0.2 V+−0.2

A

V

Large Signal Voltage Gain
LMV981(Single)

RL= 600Ω to 1.35V,
V

O

= 0.2V to 2.5V

87

86

104

dB

R

L

=2kΩ to 1.35V,

V

O

= 0.2V to 2.5V

92

91

110

Large Signal Voltage Gain
LMV982 (Dual)

R

L

= 600Ω to 1.35V,

V

O

= 0.2V to 2.5V

78

75

90

R

L

=2kΩ to 1.35V,

V

O

= 0.2V to 2.5V

81

78

100

V

O

Output Swing RL= 600Ω to 1.35V

V

IN

=±100mV

2.55

2.53

2.62

V

0.083 0.110

0.130

R

L

=2kΩ to 1.35V

V

IN

=±100mV

2.65

2.64

2.675

0.025 0.04

0.045

I

O

Output Short Circuit Current Sourcing, VO=0V

V

IN

= 100mV

20

15

30

mA

Sinking, V

O

=0V

V

IN

= −100mV

18

12

25

Ton Turn-on Time from Shutdown 12.5 µs

LMV981/LMV982

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2.7V DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 2.7V, V−= 0V, VCM=V+/2, VO=V+/2,
R

L

>

1MΩ and SHDN tied to V+. Boldface limits apply at the temperature extremes. See (Note 10).

Symbol Parameter Condition Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

V

SHDN

Turn-on Voltage to enable
part

1.9
V

Turn-off Voltage 0.8

2.7V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 2.7V, V−= 0V, VCM= 1.0V, VO= 1.35V,
R

L

>

1MΩ and SHDN tied to V+. Boldface limits apply at the temperature extremes. See (Note 10).

Symbol Parameter Conditions Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

SR Slew Rate (Note 7) 0.4 V/µs

GBW Gain-Bandwidth Product 1.4 MHz

Φ

m

Phase Margin 70 deg

G

m

Gain Margin 7.5 dB

e

n

Input-Referred Voltage Noise f = 1kHz, VCM= 0.5V 57

i

n

Input-Referred Current Noise f = 1kHz 0.082

THD Total Harmonic Distortion f = 1kHz, AV=+1

R

L

= 600kΩ,VIN=1V

PP

0.022 %

Amp-to-Amp Isolation (Note 9) 123 dB

5V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 5V, V−= 0V, VCM=V+/2, VO=V+/2,
R

L

>

1MΩ and SHDN tied to V+. Boldface limits apply at the temperature extremes. See (Note 10).

Symbol Parameter Condition Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

V

OS

Input Offset Voltage LMV981 (Single) 1 4

6

mV

LMV982 (Dual) 1 5.5

7.5

TCV

OS

Input Offset Voltage Average
Drift

5.5 µV/˚C

I

B

Input Bias Current 14 35

50

nA

I

OS

Input Offset Current 9 25

40

nA

I

S

Supply Current (per Channel) 116 210

230

µA

In Shutdown LMV981 (Single) 0.201 1

2

µA

LMV982 (Dual) 0.302 3.5

5

CMRR Common Mode Rejection

Ratio

0 ≤ V

CM

≤ 3.8V

4.6V ≤ V

CM

≤ 5.0V (Note 8)

60

55

86

dB

−0.2V ≤ V

CM

≤ 0V

5.0V ≤ V

CM

≤ 5.2V

50 78

PSRR Power Supply Rejection

Ratio

1.8V ≤ V

+

≤ 5V

V

CM

= 0.5V

75

70

100 dB

LMV981/LMV982

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5V DC Electrical Characteristics (Continued)

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 5V, V−= 0V, VCM=V+/2, VO=V+/2,
R

L

>

1MΩ and SHDN tied to V+. Boldface limits apply at the temperature extremes. See (Note 10).

Symbol Parameter Condition Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

CMVR Input Common-Mode Voltage

Range

For CMRR
Range ≥ 50dB

T

A

= 25˚C V−−0.2 −0.2 to 5.3 V++0.2

V

T

A

= −40˚C to

85˚C

V

−

V

+

TA= 125˚C V−+0.3 V+−0.3

A

V

Large Signal Voltage Gain
(LMV981 Single)

RL= 600Ω to 2.5V,
V

O

= 0.2V to 4.8V

88

87

102

dB

R

L

=2kΩ to 2.5V,

V

O

= 0.2V to 4.8V

94

93

113

Large Signal Voltage Gain
LMV982 (Dual)

R

L

= 600Ω to 2.5V,

V

O

= 0.2V to 4.8V

81

78

90

dB

R

L

=2kΩ to 2.5V,

V

O

= 0.2V to 4.8V

85

82

100

V

O

Output Swing RL= 600Ω to 2.5V

V

IN

=±100mV (Note 8)

4.855

4.835

4.890

V

0.120 0.160

0.180

R

L

=2kΩ to 2.5V

V

IN

=±100mV

4.945

4.935

4.967

0.037 0.065

0.075

I

O

Output Short Circuit Current LMV981, Sourcing, VO=0V

V

IN

= 100mV

80

68

100

mA

Sinking, V

O

=5V

V

IN

= −100mV

58

45

65

Ton Turn-on Time from Shutdown 8.4 µs

V

SHDN

Turn-on Voltage to enable
part

4.2
V

Turn-off Voltage 0.8

5V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 5V, V−= 0V, VCM=V+/2, VO= 2.5V,
R

L

>

1MΩ and SHDN tied to V+.Boldface limits apply at the temperature extremes. See (Note 10).

Symbol Parameter Conditions Min

(Note 6)

Typ

(Note 5)

Max

(Note 6)

Units

SR Slew Rate (Note 7) 0.42 V/µs

GBW Gain-Bandwidth Product 1.5 MHz

Φ

m

Phase Margin 71 deg

G

m

Gain Margin 8dB

e

n

Input-Referred Voltage Noise f = 1kHz, VCM=1V 50

i

n

Input-Referred Current Noise f = 1kHz 0.07

THD Total Harmonic Distortion f = 1kHz, AV=+1

R

L

= 600Ω,VO=1V

PP

0.022 %

Amp-to-Amp Isolation (Note 9) 123 dB

LMV981/LMV982

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