MIC864

Dual 350kHz Rail-to-Rail

Operational Amplifier

General Description

The MIC864 is a dual operational amplifier offering small-

size,

low-power

consumption

(33µA/channel

typical),

‘greater-than-the-rails’ input capability, and output range

to within 15mV of the supply rails. The MIC864 can be

operated with a single supply of +2.5V to +5.5V or a dual-

supply of ±1.25V to ±2.75V, and features an excellent

speed/power ratio with a gain bandwidth product of

350kHz.

The

MIC864

was

designed

with

input

stage

transconductance normalization, making it immune to

common-mode rejection ratio (CMRR) and power supply

rejection ratio (PSRR) degradation across the input

voltage range. This feature makes the MIC864 superior to

some earlier operational amplifiers, in which a region of

the

input

voltage

range

was

subject

to

degraded

performance.

The MIC864 is available with an industry standard pin

configuration in an 8-pin SOIC package, as well as a low

profile extra-thin (XTDFN) package and is specified to

operate from

−40°C to +125°C junction temperature.

Data sheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

Features

• 2.5V to 5.5V single or ±1.25V to ±2.75V dual supply

voltage

• 33µA per channel quiescent current

• 350kHz gain bandwidth product

• 0.2V/µs slew rate

• 18mA output drive capability (sink or source)

• 200mV greater-than-the-rails input capability

• Rail-to-rail output (within 15mV)

• 80dB common mode rejection ratio (CMRR)

• 80dB power supply rejection ratio (PSRR)

• 8-pin SOIC package

• 10-pin 2.5mm x 2.5mm x 0.4mm XTDFN package

Applications

• Battery-powered equipment

• Cellular phone PA biasing circuits

• Carbon monoxide detectors

• Smoke detectors

_________________________________________________________________________________________________________________________

Pin Configuration

MIC864 8-Pin SOIC (M)

(Top View)

MIC864 10-Pin 2.5mm x 2.5mm XTDFN (MX)

(Top View)

1.

Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

June 30, 2014

063014-2.0