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产品型号LMV651MGX的概述

LMV651MGX芯片概述 LMV651MGX是一款高性能、低功耗的运算放大器，旨在满足各种低电压和低功耗应用的需求。其设计适用于电池供电设备、便携式仪器、数据采集系统以及其他对精度和稳定性要求较高的应用场景。LMV651MGX特别适合在5V或更低电压下工作，为许多现代电子设备提供了更大的设计灵活性。该芯片具备宽输入电压范围、小偏置电流和高增益带宽积等特性，因而能够在复杂的电子线路中有效地执行放大和信号处理功能。此外，LMV651MGX的输入和输出是完全轨到轨的，这意味着它可以在接近电源范围的极限工作，提升了其在实际应用中的适用性。 LMV651MGX的详细参数 LMV651MGX的关键参数如下： - 供电电压范围：1.8V至5.5V - 输入偏置电流：最大±2nA - 输入共模电压范围：从负电源到正电源 - 增益带宽积：1.5MHz - 输出电流：最大50mA - 总谐波失真(TH...

产品型号LMV651MGX的Datasheet PDF文件预览

PRELIMINARY

September 2005

LMV651

12 MHz, Low Voltage, Low Power Amplifier

General Description

Features

National’s LMV651 is a high performance, low power op amp

IC implemented in National’s advanced VIP50 process. The

unity gain stable LMV651 features 12 MHz of bandwidth

while consuming only 110 uA of current, an exceptional

bandwidth to power ratio in this op amp class, and maintains

stability for capacitive loads as large as 500 pF.

(Typical 5V supply, unless otherwise noted)

n Guaranteed 3.0V and 5.0V performance

n High unity gain bandwidth

n Low power supply current

n Max input offset voltage

n Capacitive load drive capability

n CMRR

12 MHz

110 µA

1 mV

500 pF

100 dB

95 dB

The LMV651 provides superior performance and economy in

terms of power and space usage. The LMV651 has a maxi-

mum input offset voltage of 1 mV, a rail to rail output stage

and an input common-mode voltage range that includes

ground. The LMV651 provides a PSRR of 95 dB, a CMRR of

100 dB and a total harmonic distortion (THD) of 0.003% at

1 kHz frequency and 600Ω load

n PSRR

n Input referred voltage noise

n Output swing with 2 kΩ load

n Total harmonic distortion

n Temperature range

17nV/

50 mV from rail

0.003% 1 kHz, 600Ω

−40˚C to 125˚C

The LMV651 has an operating supply voltage range from

2.7V to 5.5V. The LMV651 can operate over a wide tempera-

ture range (-40˚C to +125˚C) making the op amp ideal for

automotive applications, sensor applications and portable

equipment applications. The LMV651 is available in the ultra

tiny SC70-5 package, which is about half the size of the

SOT23-5.

Applications

n Portable equipment

n Automotive

n Battery powered systems

n Sensors and Instrumentation

20123806

20123805

Open Loop Gain and phase vs. Frequency

THD+N vs. Frequency

DS201238

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.

Soldering Information

Infrared or Convection (20 sec)

Wave Soldering Lead Temp (10

sec)

235˚C

260˚C

ESD Tolerance (Note 2)

Human Body

2 KV

200V

Operating Ratings (Note 1)

Temperature Range

Machine Model

−40˚C to 125˚C

2.7V to 5.5V

V_INDifferential

0.3V

Supply Voltage

Supply Voltage (V⁺- V⁻)

Input/Output Pin Voltage

Storage Temperature Range

Junction Temperature (Note 3)

Package Thermal Resistance (θ_JA)(Note 3)

5-Pin SC70

V⁺+0.3V, V⁻−0.3V

−65˚C to +150˚C

+150˚C

456˚C/W

3V DC Electrical Characteristics

Unless otherwise specified, all limits are guaranteed for T_A= 25˚C, V⁺= 3V, V⁻= 0V, V_O= V_CM= V⁺/2, and R_L1 MΩ.

Boldface limits apply at the temperature extremes.

Symbol

Parameter

Conditions

Min

(Note 5)

Typ

(Note 4)

−0.1

Max

(Note 5)

Units

V_OS

I_B

Input Offset Voltage

Input Bias Current

Input Offset Current

(Note 6)

I_OS

2.2

CMRR

PSRR

Common Mode Rejection Ratio 0 ≤ V_CM≤ 1.5V

100

Power Supply Rejection Ratio

3.0 ≤ V⁺≤ 5V,

V_O= 1.5V, V_CM= 0.5

CMVR

A_VOL

V_O

Input Common-Mode Voltage

Range

CMRR ≥ 50 dB

Large Signal Voltage Gain

0.5 ≤ V_O≤ 2.5, R_L= 2 kΩ

0.5 ≤ V_O≤ 2.5, R_L= 10 kΩ

R_L= 2 kΩ to V⁺/2

Output Swing High

R_L= 10 kΩ to V⁺/2

mV from

rail

Output Swing Low

R_L= 2 kΩ to V⁺/2

R_L= 10 kΩ to V⁺/2

I_SC

Output Short Circuit Current

Sourcing to V⁺/2

V_INDifferential = 100 mV (Note 8)

Sinking from V⁺/2

V_INDifferential = −100 mV (Note 8)

I_S

Supply Current per Amplifier

Slew Rate

110

2.8

125

µA

V/µs

MHz

nV/

A_V= +1,

10% to 90% (Note 7)

GBW

e_n

Gain Bandwidth Product

Input-Referred Voltage Noise

f = 100 kHz

f = 1 kHz

i_n

Input-Referred Current Noise

Total Harmonic Distortion

f = 100 kHz

0.15

0.1

pA/

f = 1 kHz

THD

f = 1 kHz, A_V= 2, R_L= 600Ω

0.003

www.national.com

5V DC Electrical Characteristics

Unless otherwise specified, all limits are guaranteed for T_J= 25˚C, V⁺= 5V, V⁻= 0V,V_O= V_CM= V⁺/2, and R_L1 MΩ. Bold-

face limits apply at the temperature extremes.

Symbol

Parameter

Conditions

Min

Typ

Max

Units

(Note 5) (Note 4) (Note 5)

V_OS

Input Offset Voltage

Input Bias Current

Input Offset Current

Common Mode Rejection

Ratio

−0.1

I_B

(Note 6)

V_CMStep from 0V to 3.5V

I_OS

2.2

CMRR

100

PSRR

CMVR

Power Supply Rejection Ratio V⁺= 3V to 5V, V_O= 1.5V, V_CM= 0.5V

Input Common-Mode Voltage

Range

CMRR ≥ 50 dB

A_VOL

V_O

Large Signal Voltage Gain

V_O= 0.5V to 4.5V, R_L= 2 kΩ

V_O= 0.5V to 4.5V, R_L= 10 kΩ

R_L= 2 kΩ to V⁺/2

Output Swing High

R_L= 10 kΩ to V⁺/2

mV from

rail

Output Swing Low

R_L= 2 kΩ to V⁺/2

R_L= 10 kΩ to V⁺/2

I_SC

Output Short Circuit Current

Sourcing to V⁺/2

18.5

V_INDifferential = 100 mV (Note 8)

Sinking from V⁺/2

V_INDifferential = −100 mV (Note 8)

I_S

Supply Current per Amplifier

Slew Rate

110

2.8

125

µA

A_V= +1, V_O= 1 V_PP

10% to 90% (Note 7)

V/µs

GBW

e_n

Gain Bandwidth Product

MHz

nV/

Input-Referred Voltage Noise

f = 100 kHz

f = 1 kHz

i_n

Input-Referred Current Noise

Total Harmonic Distortion

f = 100 kHz

0.1

pA/

f = 1 kHz

0.15

0.003

THD

f = 1 kHz, A_V= 2, R_L= 600 Ω

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

, θ , and T . The maximum allowable power dissipation at any ambient temperature is

JA A

J(MAX

= (T - T )/ θ . All numbers apply for packages soldered directly onto a PC board.

J(MAX) A JA

Note 4: Typical values represent the most likely parametric norm at the time of characterization.

Note 5: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlations using Statistical Quality Control

(SQC) method.

Note 6: Positive current corresponds to current flowing into the device.

Note 7: Slew rate is the average of the rising and falling slew rates.

Note 8: Short circuit test is a momentary test.

www.national.com

Connection Diagram

5-Pin SC70/SOT23

20123802

Top View

Ordering Information

Package

Part Number

LMV651MG

LMV651MGX

Package marking

A93

Transport Media

NSC Drawing

5-Pin SC70

1k Units Tape and Reel

3 k Units Tape and Reel

MA005A

www.national.com

Physical Dimensions inches (millimeters) unless otherwise noted

5-Pin SC70

NS Package Number MAA05A

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

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

provided in the labeling, can be reasonably expected to result

in a significant injury to the user.

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.

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.

National Semiconductor

Americas Customer

Support Center

National Semiconductor

Europe Customer Support Center

Fax: +49 (0) 180-530 85 86

National Semiconductor

Asia Pacific Customer

Support Center

National Semiconductor

Japan Customer Support Center

Fax: 81-3-5639-7507

Email: new.feedback@nsc.com

Tel: 1-800-272-9959

Email: europe.support@nsc.com

Deutsch Tel: +49 (0) 69 9508 6208

English Tel: +44 (0) 870 24 0 2171

Français Tel: +33 (0) 1 41 91 8790

Email: ap.support@nsc.com

Email: jpn.feedback@nsc.com

Tel: 81-3-5639-7560

www.national.com

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