LMV921 datasheet(7/42 Pages) NSC

7 / 42 page

2-1

LMV921 Qualification Package

2.0 DEVICE INFORMATION

LMV921

1.8V, 1MHz, Low Power Operational Amplifier with

Rail-To-Rail Input and Output in SC70-5 package

General Description

The LMV921 is guaranteed to operate from +1.8V to +5.0V

supply voltages and has 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 volt-

age range extends 300mV beyond the supplies and the out-

put can swing rail-to-rail unloaded and within 100mV from

the rail with 600

Ω load at 1.8V supply. The LMV921 is opti-

mized to work at 1.8V which makes it ideal for portable

two-cell battery-powered systems and single cell Li-Ion sys-

tems.

The LMV921 exhibits excellent speed-power ratio, achieving

1 MHz gain bandwidth product at 1.8V supply voltage with

very low supply current. The LMV921 is capable of driving

600

Ω load and up to 1000pF capacitive load with minimal

ringing. The LMV921’s high DC gain of 100dB makes it suit-

able for low frequency applications.

The LMV921 is offered in a space saving SC70-5 and

SOT23-5

packages.

The

SC70-5

package

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/600

Ω Load

100 mV from rail

— w/2k

Ω Load

30 mV from rail

n V

300mV beyond rails

n Ultra Tiny, SC70-5 package

n 90dB gain w/600Ω load

n Supply Current

145µA

n Gain Bandwidth Product

1MHz

n Maximum V

6mV

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 Diagram

Ordering Information

Package

Temperature Range

Industrial

−40˚C to +85˚C

Packaging Marking

Transport Media

NSC Drawing

5-Pin SC70-5

LMV921M7

A21

250 Units Tape and

Reel

MAA05A

LMV921M7X

A21

3k Units Tape and Reel

5-Pin SOT23-5

LMV921M5

A29A

250 Units Tape and

Reel

MA05B

LMV921M5X

A29A

3k Units Tape and Reel

5-Pin SC70-5/SOT23-5

DS100979-84

Top View

April 1999

DS100979

www.national.com

2.1 Datasheet

LMV921 数据表(PDF) 7 Page - National Semiconductor (TI)

LMV921 数据表(HTML) 7 Page - National Semiconductor (TI)

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