General Description

The LMX321/LMX358/LMX324 are single/dual/quad,

low-cost, low-voltage, pin-to-pin compatible upgrades

to the LMV321/LMV358/LMV324 family of general pur-

pose op amps. These devices offer rail-to-rail outputs

and an input common-mode range that extends below

ground. These op amps draw only 105µA of quiescent

current per amplifier, operate from a single +2.3V to

+7V supply, and drive 2kΩ resistive loads to within

40mV of either rail. The LMX321/LMX358/LMX324 are

unity-gain stable with a 1.3MHz gain-bandwidth prod-

uct capable of driving capacitive loads up to 400pF.

The combination of low voltage, low cost, and small

package size makes these amplifiers ideal for

portable/battery-powered equipment.

The LMX321 single op amp is available in ultra-small 5-

pin SC70 and space-saving 5-pin SOT23 packages. The

LMX358 dual op amp is available in the tiny 8-pin SOT23

is available in 14-pin TSSOP and SO packages.

Applications

Cellular Phones

Laptops

Low-Power, Low-Voltage Applications

Portable/Battery-Powered Equipment

Cordless Phones

Active Filters

Features

♦ Upgrade to LMV321/LMV358/LMV324 Family

♦ Single +2.3V to +7V Supply Voltage Range

♦ Available in Space-Saving Packages

5-Pin SC70 (LMX321)

8-Pin SOT23 (LMX358)

14-Pin TSSOP (LMX324)

♦ 1.3MHz Gain-Bandwidth Product

♦ 105µA Quiescent Current per Amplifier

♦ No Phase Reversal for Overdriven Inputs

♦ No Crossover Distortion

♦ Rail-to-Rail Output Swing

♦ Drives 2kΩ Resistive Loads

Single/Dual/Quad, General-Purpose,

Low-Voltage, Rail-to-Rail Output Op Amps

________________________________________________________________ Maxim Integrated Products

1

6

SOT23-8/SO/µMAX

TSSOP/SO

OUT1

IN1+

1

2

3

4

8

IN2-

5 IN2+

7 OUT2

IN1-

OUT1

IN1+

IN2+

OUT2

IN2-

1

2

3

4

5

6

7

14

13

12

11

10

9

8

IN4+

IN3+

IN3-

OUT3

IN4-

OUT4

IN1-

LMX324

LMX358

IN+

IN-

1

2

3

5

4 OUT

LMX321

SC70-5/SOT23-5

TOP VIEW

Pin Configurations

Ordering Information

19-2103; Rev 1; 10/06

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

Selector Guide appears at end of data sheet.

PART

TEMP RANGE

PIN-

PACKAGE

PKG

CODE

LMX321AXK-T

-40°C to +125°C

5 SC70-5

X5-1

LMX321AUK-T

-40°C to +125°C

5 SOT23-5

U5-1

LMX358AKA-T

-40°C to +125°C

8 SOT23-8

K8-2

LMX358ASA

-40°C to +125°C

8 SO

S8-2

LMX358AUA-T

-40°C to +125°C

8 µMAX-8

U8-1

LMX324ASD

-40°C to +125°C

14 SO

S14-4

LMX324AUD

-40°C to +125°C

14 TSSOP

U14-1