LMC8101

Rail-to-Rail Input and Output, 2.7V Op Amp in

micro SMD package with Shutdown

General Description

The LMC8101 is a Rail-to-Rail Input and Output high perfor-

mance CMOS operational amplifier. The LMC8101 is ideal

for low voltage (2.7V to 10V) applications requiring

Rail-to-Rail inputs and output. The LMC8101 is supplied in

the die sized micro SMD as well as the 8 pin MSOP pack-

ages. The micro SMD package requires 75% less board

space as compared to the SOT23-5 package. The LMC8101

is an upgrade to the industry standard LMC7101.

The LMC8101 incorporates a simple user controlled method-

ology for shutdown. This allows ease of use while reducing

the total supply current to 1nA typical. This extends battery

life where power saving is mandated. The shutdown input

threshold can be set relative to either V

pin (see Application Note section for details).

Other enhancements include improved offset voltage limit,

three times the output current drive and lower 1/f noise when

compared to the industry standard LMC7101 Op Amp. This

makes the LMC8101 ideal for use in many battery powered,

wireless communication and Industrial applications.

Features

V

specified.

n Rail-to-Rail Inputs

n Rail-to-Rail Output

Swing

Within 35mV of Supplies (R

n Packages Offered:

n

micro SMD package

1.39mm x 1.41mm

n

MSOP package

3.0mm x 4.9mm

n Low Supply Current

n Shutdown Current

1µA (max)

n Versatile Shutdown feature

10µs turn-on

n Output Short Circuit Current

10mA

n Offset Voltage

n Gain-Bandwidth

1MHz

n Supply Voltage Range

2.7V-10V

n THD

0.18%

n Voltage Noise

36

Applications

n Portable Communication (voice, data)

n Cellular Phone Power Amp Control Loop

n Buffer AMP

n Active Filters

n Battery Sense

n VCO Loop

Connection Diagrams

8-Pin MSOP

DS101240-79

Top View

micro SMD

DS101240-80

Top View

September 1999

© 1999 National Semiconductor Corporation

DS101240

www.national.com