NSC LMV722MMX, LMV722MM Datasheet

LMV721/LMV722
10MHz, Low Noise, Low Voltage, and Low Power
Operational Amplifier

LMV721/LMV722 10MHz, Low Noise, Low Voltage, and Low Power Operational Amplifier

April 2002

General Description

The LMV721 (Single) and LMV722 (Dual) are low noise, low
voltage, and low power op amps, that can be designed into
a wide range of applications. The LMV721/LMV722 has a
unity gain bandwidth of 10MHz, a slew rate of 5V/us, and a
quiescent current of 930uA/amplifier at 2.2V.

The LMV721/722 are designed to provide optimal perfor­mance in low voltage and low noise systems. They provide
rail-to-rail output swing into heavy loads. The input
common-mode voltage range includes ground, and the
maximum input offset voltage are 3.5mV (Over Temp.) for
the LMV721/LMV722. Their capacitive load capability isalso
good at low supply voltages. The operating range is from

2.2V to 5.5V.
The chip is built with National’s advanced Submicron

Silicon-Gate BiCMOS process. The single version, LMV721,
is available in 5 pin SOT23-5 and a SC-70 (new) package.
The dual version, LMV722, is available in a SO-8, MSOP-8
and 8-pin LLP package.

A Battery Powered Microphone Preamplifier

Features

(For Typical, 5 V Supply Values; Unless Otherwise Noted)

n Guaranteed 2.2V and 5.0V Performance
n Low Supply Current LMV721/2 930µA/amplifier
n High Unity-Gain Bandwidth 10MHz
n Rail-to-Rail Output Swing

@

600Ω load 120mV from either rail at 2.2V

@

2kΩ load 50mV from either rail at 2.2V

n Input Common Mode Voltage Range Includes Ground
n Silicon Dust
n Miniature packaging: LLP-8 2.5mm x 3mm x 0.8mm
n Input Voltage Noise

™

, SC70-5 Package 2.0x2.0x1.0 mm

@

2.2V

Applications

n Cellular an Cordless Phones
n Active Filter and Buffers
n Laptops and PDAs
n Battery Powered Electronics

10092244

Silicon Dust™is a trademark of National Semiconductor Corporation.

© 2002 National Semiconductor Corporation DS100922 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)

LMV721/LMV722

Human Body Model 2000V

Machine Model 100V
Differential Input Voltage
Supply Voltage (V

+–V−

) 5.5V

±

Supply Voltage

Soldering Information

Infrared or Convection (20 sec.) 235˚C
Storage Temp. Range −65˚C to 150˚C

Operating Ratings (Note 3)

Supply Voltage 2.2V to 5.0V
Temperature Range −40˚C ≤T
Thermal Resistance (θ

Silicon Dust SC70-5 Pkg 440˚C/W
Tiny SOT23-5 Pkg 265 ˚C/W
SO Pkg, 8-pin Surface Mount 190˚C/W
MSOP Pkg, 8-Pin Mini Surface

Mount
SO Pkg, 14-Pin Surface Mount 145˚C/W
LLP pkg, 8-Pin 58.2˚C/W

)

JA

Junction Temperature (Note 4) 150˚C

2.2V DC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 2.2V, V−= 0V, VCM=V+/2, VO=V+/2 and R

Boldface limits apply at the temperature extremes.

Typ

Symbol Parameter Condition

V

OS

TCV

OS

I

B

I

OS

CMRR Common Mode Rejection Ratio 0V ≤ V

PSRR Power Supply Rejection Ratio 2.2V ≤ V

V

CM

Input Offset Voltage 0.02 3

Input Offset Voltage Average Drift 0.6 µV/˚C
Input Bias Current 260 nA
Input Offset Current 25 nA

≤ 1.3V 88 70

CM

+

≤ 5V, VO=0VCM= 0 90 70

Input Common-Mode Voltage

For CMRR ≥ 50dB −0.30 V

Range

A

V

V

O

I

O

I

S

Large Signal Voltage Gain RL=600Ω

= 0.75V to 2.00V

V

O

R

=2kΩ

L

= 0.50V to 2.10V

V

O

Output Swing RL= 600Ω to V+/2 2.125 2.090

R

=2kΩto V+/2 2.177 2.150

L

Output Current Sourcing, VO=0V

(diff) =±0.5V

V

IN

Sinking, V

(diff) =±0.5V

V

IN

= 2.2V

O

Supply Current LMV721 0.93 1.2

LMV722 1.81 2.2

(Note 5)

1.3 V
81 75

84 75

0.071 0.120

0.056 0.080

14.9 10.0

17.6 10.0

≤85˚C

J

235 ˚C/W

>

1MΩ.

L

Limit

(Note 6) Units

mV

3.5

max

dB

64

min

dB

64

min

dB

60

min

dB

60

min

V

2.065

min

V

0.145

max

V

2.125

min

V

0.105

max

mA

5.0

min
mA

5.0

1.5

min

mA

max

2.6

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2.2V AC Electrical Characteristics

Unless otherwise specified, all limits guaranteed for TJ= 25˚C. V+= 2.2V, V−= 0V, VCM=V+/2, VO=V+/2 and R

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions Typ

(Note 5)
SR Slew Rate (Note 7) 4.9 V/µs
GBW Gain-Bandwidth Product 10 MHz

Φ

m

G

m

e

n

Phase Margin 67.4 Deg
Gain Margin −9.8 dB
Input-Referred Voltage Noise f = 1 kHz 9

L

>

Units

LMV721/LMV722

1MΩ.

i

n

THD Total Harmonic Distortion f = 1 kHz AV=1

Input-Referred Current Noise f = 1 kHz 0.3

= 600Ω,VO= 500 mV

R

L

PP

0.004 %

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

Boldface limits apply at the temperature extremes.

Symbol Parameter Condition

V

OS

TCV

OS

I

B

I

OS

CMRR Common Mode Rejection Ratio 0V ≤ V

PSRR Power Supply Rejection Ratio 2.2V ≤ V

V

CM

Input Offset Voltage −0.08 3

Input Offset Voltage Average Drift 0.6 µV/˚C
Input Bias Current 260 nA
Input Offset Current 25 nA

≤ 4.1V 89 70

CM

+

≤ 5.0V, VO=0VCM= 0 90 70

Input Common-Mode Voltage

For CMRR ≥ 50dB −0.30 V

Range

A

V

V

O

I

O

I

S

Large Signal Voltage Gain RL= 600Ω

= 0.75V to 4.80V

V

O

R

=2kΩ,

L

= 0.70V to 4.90V,

V

O

Output Swing RL= 600Ω to V+/2 4.882 4.840

R

=2kΩto V+/2 4.952 4.930

L

Output Current Sourcing, VO=0V

(diff) =±0.5V

V

IN

Sinking, V

(diff) =±0.5V

V

IN

O

=5V

Supply Current LMV721 1.03 1.4

LMV722 2.01 2.4

Typ

(Note 5)

(Note 6)

4.1 V
87 80

94 85

0.134 0.190

0.076 0.110

52.6 25.0

23.7 15.0

Limit

3.5

64

64

70

70

4.815

0.215

4.905

0.135

12.0

8.5

1.7

2.8

L

>

1MΩ.

Units

mV

max

dB

min

dB

min

dB

min

dB

min

V

min

V

max

V

min

V

max

mA
min

mA
min

mA

max

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5V AC Electrical Characteristics

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

Boldface limits apply at the temperature extremes.

Symbol Parameter Conditions

LMV721/LMV722

SR Slew Rate (Note 7) 5.25 V/µs min
GBW Gain-Bandwidth Product 10.0 MHz

Φ

m

G

m

e

n

Phase Margin 72 Deg
Gain Margin −11 dB
Input-Related Voltage Noise f = 1 kHz 8.5

Typ

(Note 5)

L

>

1MΩ.

Units

i

n

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

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 30 mA over long term may adversely affect reliability.
Note 4: The maximum power dissipation is a function of T

=(T

P

D

J(max)–TA

Note 5: Typical Values represent the most likely parametric norm.
Note 6: All limits are guaranteed by testing or statistical analysis.
Note 7: Connected as voltage follower with 1V step input. Number specified is the slower of the positive and negative slew rate.

Input-Referred Current Noise f = 1 kHz 0.2

= 600Ω,VO=1V

R

L

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

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

J(max)

PP

0.001 %

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Typical Performance Characteristics

Supply Current vs. Supply Voltage (LMV721) Sourcing Current vs. Output Voltage (VS= 2.2V)

LMV721/LMV722

10092201

10092202

Sourcing Current vs.

Output Voltage (V

= 5V) Sinking Current vs. Output Voltage (VS= 2.2V)

S

10092203 10092204

Sinking Current vs. Output Voltage (VS= 5V) Output Voltage Swing vs. Supply Voltage (RL= 600Ω)

10092205

10092206

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