DUAL MICROPOWER PRECISION RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER

ALD2711A/ALD2711B

ALD2711

GENERAL DESCRIPTION

The ALD2711 is a dual monolithic CMOS micropower precision high

slew rate operational amplifier intended for a broad range of analog

applications using

±1V to ±6V dual power supply systems, as well as

+2V to +12V battery operated systems. All device characteristics are

specified for +5V single supply or

±2.5V dual supply systems. Typical

supply current is 200

µA at 5V supply voltage. It is manufactured with

Advanced Linear Devices' enhanced ACMOS silicon gate CMOS

process.

The device has an input stage that operates to +300mV above and

-300mV below the supply voltages with no adverse effects and/or

phase reversals.

The ALD2711 has been developed specifically for the +5V single

supply or

±1V to ±6V dual supply user. Several important characteristics

of the device make application easier to implement at those voltages.

First, each operational amplifier can operate with rail to rail input and

output voltages.

This means the signal input voltage and output

voltage can be at the positive and negative supply voltages. This

feature allows numerous analog serial stages and flexibility in input

signal bias levels. Secondly, each device was designed to accommodate

mixed applications where digital and analog circuits may operate off

the same power supply or battery.

Thirdly, the output stage can

typically drive up to 50pF capacitive and 10K

Ω resistive loads.

These features, combined with extremely low input currents, high open

loop voltage gain, high useful bandwidth, and slew rate make the

ALD2711 a versatile, micropower operational amplifier.

The ALD2711 with on-chip offset voltage trimming allows the device to

be used without nulling in most applications. The unique characteristics

of the ALD2711 are modeled in an available macromodel.

FEATURES

• Designed and characterized for 5V operation

• Linear mode operation with input voltages

300mV beyond supply rails

• Output voltages to within 2mV of power supply

rails when driving a high impedance load

• Unity gain stable

• Extremely low input bias currents -- 0.01pA

• Dual power supply

±1.0V to ±6.0V

• Single power supply +2V to +12V

• High voltage gain

• Output short circuit protected

• Unity gain bandwidth of 0.7MHz

• Slew rate of 0.7V/

µs

• Low power dissipation

• Symmetrical complementary output drive

APPLICATIONS

• Voltage follower/buffer/amplifier

• Charge integrator

• Photodiode amplifier

• Data acquisition systems

• High performance portable

instruments

• Signal conditioning circuits

• Sensor and transducer amplifiers

• Low leakage amplifiers

• Active filters

• Sample/Hold amplifier

• Picoammeter

• Current to voltage converter

PIN CONFIGURATION

1

2

3

4

8

7

6

5

TOP VIEW

DA, PA, SA PACKAGE

OUT A

-IN A

+IN A

V+

-IN B

+IN B

V -

OUT B

ORDERING INFORMATION

Operating Temperature Range

-55

°C to +125°C0°C to +70°C0°C to +70°C

8-Pin

8-Pin

8-Pin

CERDIP

Small Outline

Plastic Dip

Package

Package (SOIC)

Package

ALD 2711A DA

ALD 2711A SA

ALD 2711A PA

ALD 2711B DA

ALD 2711B SA

ALD 2711B PA

ALD 2711 DA

ALD 2711 SA

ALD 2711 PA

* Contact factory for industrial temperature range.

© 1998 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com