NSC LMV921M7, LMV921M5X, LMV921M5, LMV921EVAL, LMV921M7X Datasheet

LMV921 Single/ LMV922 Dual/ LMV924 Quad

1.8V, 1MHz, Low Power Operational Amplifiers with
Rail-To-Rail Input and Output

General Description

The LMV921 Single/LMV922 Dual/LMV924 Quad are guar­anteed to operate from +1.8V to +5.0V supply voltages and
have rail-to-rail input and output. This rail-to-rail operation
enables the user to make full use of the entire supply voltage
range. The input common mode voltage range extends
300mV beyond the supplies and the output can swing
rail-to-rail unloaded and within 100mV from the rail with
600Ω load at 1.8V supply. The LMV921/LMV922/LMV924
are optimized to work at 1.8V which make them ideal for por­table two-cell battery-powered systems and single cell Li-Ion
systems.

The LMV921/LMV922/LMV924 exhibit excellent
speed-power ratio, achieving 1MHz gain bandwidth product
at 1.8V supply voltage with very low supply current. The
LMV921/LMV922/LMV924 are capable of driving 600Ω load
and up to 1000pF capacitive load with minimal ringing. The
LMV921/LMV922/LMV924’s high DC gain of 100dB makes
them suitable for low frequency applications.

The LMV921 (Single) is offered in a space saving SC70–5
and SOT23–5 packages. The SC70–5 package is only

2.0X2.1X1.0mm. These small packages are ideal solutions
for area constrained PC boards and portable electronics
such as cellphones and PDAs.

Features

(Typical 1.8V Supply Values; Unless Otherwise Noted)

n Guaranteed 1.8V, 2.7V and 5V specifications
n Rail-to-Rail input & output swing

— w/600Ω load 100 mV from rail
— w/2kΩ load 30 mV from rail

n V

CM

300mV beyond rails

n 90dB gain w/600Ω load
n Supply current 145µA/amplifier
n Gain bandwidth product 1MHz
n LMV921 Maximum V

OS

6mV

n LMV921 available in Ultra Tiny, SC70-5 package
n LMV922 available in MSOP-8 package
n LMV924 available in TSSOP-14 package

Applications

n Cordless/cellular phones
n Laptops
n PDAs
n PCMCIA
n Portable/battery-powered electronic Equipment
n Supply current Monitoring
n Battery monitoring

Connection Diagrams

5-Pin SC70-5/SOT23-5

DS100979-84

Top View

8-Pin MSOP/SOIC

DS100979-2

Top View

December 1999

LMV921 Single/ LMV922 Dual/ LMV924 Quad 1.8V, 1MHz, Low Power Operational Amplifiers with

Rail-To-Rail Input and Output

© 1999 National Semiconductor Corporation DS100979 www.national.com

Connection Diagrams (Continued)

Ordering Information

Package Temperature Range

Industrial

−40˚C to +85˚C

Packaging

Marking

Transport Media NSC

Drawing

5-Pin SC70-5 LMV921M7 A21 1k Units Tape and Reel MAA05A

LMV921M7X A21 3k Units Tape and Reel

5-Pin SOT23-5 LMV921M5 A29A 1k Units Tape and Reel

MA05B

LMV921M5X A29A 3k Units Tape and Reel

8-Pin MSOP LMV922MM LMV922 1k Units Tape and Reel

MUA08A

LMV922MMX LMV922 3.5k Units Tape and Reel

14-Pin TSSOP LMV924MT LMV924 Rails

MTC14

LMV924MTX LMV924 2.5k Units Tape and Reel

8-Pin SOIC LMV922M LMV922M Rails

M08A

LMV922MX LMV922M 2.5k Units Tape and Reel

14-Pin SOIC LMV924M LMV924M Rails

M14A

LMV924MX LMV924M 2.5k Units Tape and Reel

14-Pin TSSOP/SOIC

DS100979-1

Top View

LMV921 Single/ LMV922 Dual/ LMV924 Quad

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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 100V
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 1.5V to 5.0V
Temperature Range −40˚C ≤ T

J

≤ 85˚C

Thermal Resistance (θ

JA

)

Ultra Tiny SC70-5 Package
5-Pin Surface Mount 440 ˚C/W

Tiny SOT23-5 Package
5-Pin Surface Mount 265 ˚C/W

MSOP Package
8-Pin Surface Mount 235˚C/W

TSSOP Package
14-Pin Surface Mount 155˚C/W

SOIC Package
8-Pin Surface Mount 175˚C/W

14-Pin Surface Mount 127˚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 and
R

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Condition Typ

(Note 5)

Limits

(Note 6)

Units

V

OS

Input Offset Voltage LMV921 (Single) −1.8 6

8

mV

max

LMV922 (Dual)
LMV924 (Quad)

−1.8 8

9.5

mV

max

TCV

OS

Input Offset Voltage Average
Drift

1 µV/˚C

I

B

Input Bias Current 12 35

50

nA

max

I

OS

Input Offset Current 2 25

40

nA

max

I

S

Supply Current LMV921 (Single) 145 185

205

µA

max

LMV922 (Dual) 330 400

550

LMV924 (Quad) 560 700

850

CMRR Common Mode Rejection Ratio 0 ≤ V

CM

≤ 0.6V 82 62

60

dB

min

−0.2V ≤ V

CM

≤ 0V

1.8V ≤ V

CM

≤ 2.0V

74 50

PSRR Power Supply Rejection Ratio 1.8V ≤ V

+

≤ 5V,

V

CM

= 0.5V

78 67

62

dB

min

V

CM

Input Common-Mode Voltage
Range

For CMRR ≥ 50dB -0.3 -0.2

0

V

max

2.15 2.0

1.8

V

min

A

V

Large Signal Voltage Gain
LMV921 (Single)

RL= 600Ω to 0.9V,
V

O

= 0.2V to 1.6V, VCM= 0.5V

91 77

73

dB

min

R

L

=2kΩto 0.9V,

V

O

= 0.2V to 1.6V, VCM= 0.5V

95 80

75

Large Signal Voltage Gain
LMV922 (Dual)
LMV924 (Quad)

R

L

= 600Ω to 0.9V,

V

O

= 0.2V to 1.6V, VCM= 0.5V

79 65

61

dB

min

R

L

=2kΩto 0.9V,

V

O

= 0.2V to 1.6V, VCM= 0.5V

83 68

63

LMV921 Single/ LMV922 Dual/ LMV924 Quad

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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 and
R

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Condition Typ

(Note 5)

Limits

(Note 6)

Units

V

O

Output Swing RL= 600Ω to 0.9V

V

IN

=±100mV

1.7 1.65

1.63

V

min

0.075 0.090

0.105

V

max

R

L

=2kΩto 0.9V

V

IN

=±100mV

1.77 1.75

1.74

V

min

0.025 0.035

0.040

V

max

I

O

Output Short Circuit Current Sourcing, VO=0V

V

IN

= 100mV

64

3.3

mA
min

Sinking, V

O

= 1.8V

V

IN

= −100mV

10 7

5

mA
min

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 and
R

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Typ

(Note 5)

Units

SR Slew Rate (Note 7) 0.39 V/µs
GBW Gain-Bandwidth Product 1 MHz

Φ

m

Phase Margin 60 Deg.

G

m

Gain Margin 10 dB

e

n

Input-Referred Voltage Noise f = 1 kHz, VCM= 0.5V 45

i

n

Input-Referred Current Noise f = 1 kHz 0.1

THD Total Harmonic Distortion f=1kHz, A

V

=

+1

R

L

=

600kΩ,V

IN

=

1V

PP

0.089

%

Amp-to-Amp Isolation (Note 8) 140 dB

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 and
R

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Condition Typ

(Note 5)

Limits

(Note 6)

Units

V

OS

Input Offset Voltage LMV921 (Single) −1.6 6

8

mV

max

LMV922 (Dual)
LMV924 (Quad)

−1.6 8

9.5

mV

max

TCV

OS

Input Offset Voltage Average
Drift

1 µV/˚C

I

B

Input Bias Current 12 35

50

nA

max

I

OS

Input Offset Current 2 25

40

nA

max

LMV921 Single/ LMV922 Dual/ LMV924 Quad

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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 and
R

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Condition Typ

(Note 5)

Limits

(Note 6)

Units

I

S

Supply Current LMV921 (Single) 147 190

210

uA

max

LMV922 (Dual) 380 450

600

LMV924 (Quad) 580 750

900

CMRR Common Mode Rejection Ratio 0V ≤ V

CM

≤ 1.5V 84 62

60

dB

min

−0.2V ≤ V

CM

≤ 0V

2.7V ≤ V

CM

<

2.9V

73 50

PSRR Power Supply Rejection Ratio 1.8V ≤ V

+

≤ 5V,

V

CM

= 0.5V

78 67

62

dB

min

V

CM

Input Common-Mode Voltage
Range

For CMRR ≥ 50dB -0.3 -0.2

0

V

max

3.050 2.9

2.7

V

min

A

V

Large Signal Voltage Gain
LMV921 (Single)

RL= 600Ω to 1.35V,
V

O

= 0.2V to 2.5V

98 80

75

dB

min

R

L

=2kΩto 1.35V,

V

O

= 0.2V to 2.5V

103 83

77

Large Signal Voltage Gain
LMV922 (Dual)
LMV924 (Quad)

R

L

= 600Ω to 1.35V,

V

O

= 0.2V to 2.5V

86 68

63

dB

min

R

L

=2kΩto 1.35V,

V

O

= 0.2V to 2.5V

91 71

65

V

O

Output Swing RL= 600Ω to 1.35V

V

IN

=±100mV

2.62 2.550

2.530

V

min

0.075 0.095

0.115

V

max

R

L

=2kΩto 1.35V

V

IN

=±100mV

2.675 2.650

2.640

V

min

0.025 0.040

0.045

V

max

I

O

Output Short Circuit Current Sourcing, VO=0V

V

IN

= 100mV

27 20

15

mA
min

Sinking, V

O

= 2.7V

V

IN

= −100mV

28 22

16

mA
min

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 and
R

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Typ

(Note 5)

Units

SR Slew Rate (Note 7) 0.41 V/µs
GBW Gain-Bandwidth Product 1 MHz

Φ

m

Phase Margin 65 Deg.

G

m

Gain Margin 10 dB

e

n

Input-Referred Voltage Noise f = 1 kHz, VCM= 0.5V 45

i

n

Input-Referred Current Noise f = 1 kHz 0.1

LMV921 Single/ LMV922 Dual/ LMV924 Quad

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2.7V AC Electrical Characteristics (Continued)

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

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Typ

(Note 5)

Units

THD Total Harmonic Distortion f=1 kHz, A

V

=

+1

R

L

=

600kΩ,V

IN

=

1V

PP

0.077

%

Amp-to-Amp Isolation (Note 8) 140 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 and
R

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Condition Typ

(Note 5)

Limits

(Note 6)

Units

V

OS

Input Offset Voltage LMV921 (Single) −1.5 6

8

mV

max

LMV922 (Dual)
LMV924 (Quad)

−1.5 8

9.5

mV

max

TCV

OS

Input Offset Voltage Average
Drift

1 µV/˚C

I

B

Input Bias Current 12 35

50

nA

max

I

OS

Input Offset Current 2 25

40

nA

max

I

S

Supply Current LMV921 (Single) 160 210

230

µA

max

LMV922 (Dual) 400 500

700

LMV924 (Quad) 750 850

980

CMRR Common Mode Rejection Ratio 0V ≤ V

CM

≤ 3.8V 86 62

61

dB

min

−0.2V ≤ V

CM

≤ 0V

5.0V ≤ V

CM

≤ 5.2V

72 50

PSRR Power Supply Rejection Ratio 1.8V ≤ V

+

≤ 5V

V

CM

= 0.5V

78 67

62

dB

min

V

CM

Input Common-Mode Voltage
Range

For CMRR ≥ 50dB -0.3 -0.2

0

V

max

5.350 5.2

5.0

V

min

A

V

Voltage Gain
LMV921 (Single)

RL= 600Ω to 2.5V
V

O

= 0.2V to 4.8V

104 86

82

dB

min

R

L

=2kΩto 2.5V

V

O

= 0.2V to 4.8V

108 89

85

Voltage Gain
LMV922 (Dual)
LMV924 (Quad)

R

L

= 600Ω to 2.5V

V

O

= 0.2V to 4.8V

90 72

68

dB

min

R

L

=2kΩto 2.5V

V

O

= 0.2V to 4.8V

96 77

73

LMV921 Single/ LMV922 Dual/ LMV924 Quad

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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 and
R

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Condition Typ

(Note 5)

Limits

(Note 6)

Units

V

O

Output Swing RL= 600Ω to 2.5V

V

IN

=±100mV

4.895 4.865

4.840

V

min

0.1 0.135

0.160

V

max

R

L

=2kΩto 2.5V

V

IN

=±100mV

4.965 4.945

4.935

V

min

0.035 0.065

0.075

V

max

I

O

Output Short Circuit Current LMV921 Sourcing, VO=0V

V

IN

= 100mV

98 85

68

mA
min

LMV922, LMV924 Sourcing, V

O

=
0V
V

IN

= 100mV

60 35

Sinking, V

O

=5V

V

IN

= −100mV

75 65

45

mA
min

5V AC Electrical Characteristics

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

L

>

1MΩ.Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Typ

(Note 5)

Units

SR Slew Rate (Note 7) 0.45 V/µs
GBW Gain-Bandwidth Product 1 MHz

Φ

m

Phase Margin 70 Deg.

G

m

Gain Margin 15 dB

e

n

Input-Referred Voltage Noise f = 1 kHz, VCM=1V 45

i

n

Input-Referred Current Noise f = 1 kHz 0.1

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

R

L

= 600Ω,VO=1V

PP

0.069

%

Amp-to-Amp Isolation (Note 8) 140 dB

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, 1.5 kΩ in series with 100 pF. Machine model, 200Ω in series with 100 pF.
Note 3: Applies to both single-supply and split-supply operation. Continuous short circuit operation at elevated ambient temperature can result in exceeding the

maximum allowed junction temperature of 150˚C. Output currents in excess of 45 mA over long term may adversely affect reliability.
Note 4: The maximum power dissipation is a function of T

J(max)

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

P

D

=(T

J(max)–TA

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

Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: V

+

= 5V. Connected as voltage follower with 5V step input. Number specified is the slower of the positive and negative slew rates.

Note 8: Input referred, V

+

=

5V and R

L

=

100kΩ connected to 2.5V. Each amp excited in turn with 1kHz to produce V

O

=

3V

PP

.

LMV921 Single/ LMV922 Dual/ LMV924 Quad

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Simplified Schematic

DS100979-A9

LMV921 Single/ LMV922 Dual/ LMV924 Quad

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Typical Performance Characteristics Unless otherwise specified, V

S

= +5V, single supply, TA= 25˚C.

Supply Current vs.
Supply Voltage (LMV921)

DS100979-A1

Input Bias Current
vs. V

CM

DS100979-D5

Sourcing Current vs.
Output Voltage

DS100979-B3

Sourcing Current vs.
Output Voltage

DS100979-B8

Sourcing Current vs.
Output Voltage

DS100979-B2

Sinking Current vs.
Output Voltage

DS100979-B4

Sinking Current vs.
Output Voltage

DS100979-B7

Sinking Current vs.
Output Voltage

DS100979-B1

Offset Voltage vs.
Common Mode Voltage

DS100979-D1

LMV921 Single/ LMV922 Dual/ LMV924 Quad

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