DUAL EPAD® PRECISION HIGH SLEW RATE CMOS OPERATIONAL AMPLIFIER

ALD2724E/ALD2724

GENERAL DESCRIPTION

The ALD2724E/ALD2724 is a dual monolithic operational amplifier with

MOSFET input that has rail-to-rail input and output voltage ranges. The

input voltage range and output voltage range are very close to the positive

and negative power supply voltages. Typically the input voltage can be

beyond positive power supply voltage V+ or the negative power supply

voltage V- by up to 300mV. The output voltage swings to within 60mV of

either positive or negative power supply voltages at rated load.

With high impedance load, the output voltage of the ALD2724E/ALD2724

approaches within 1mV of the power supply rails. This device is designed

as an alternative to the popular J-FET input operational amplifier in

applications where lower operating voltages, such as 9V battery or

±3.25V

to

±5V power supplies are being used. The ALD2724E/ALD2724 offers

high slew rate of 5.0V/

µs.

The rail-to-rail input and output feature of the ALD2724E/ALD2724 ex-

pands signal voltage range for a given operating supply voltage and allows

numerous analog serial stages to be implemented without losing operat-

ing voltage margin. The output stage is designed to drive up to 10mA into

400pF capacitive and 1.5K

Ω resistive loads at unity gain and up to 4000pF

at a gain of 5. Short circuit protection to either ground or the power supply

rails is at approximately 15mA clamp current. Due to complementary

output stage design, the output can source and sink 10mA into a load with

symmetrical drive and is ideally suited for applications where push-pull

voltage drive is desired.

For each of the operational amplifier, the offset voltage is trimmed on-chip

to eliminate the need for external nulling in many applications.

For

precision applications, the output is designed to settle to 0.1% in 2

µs. In

large signal buffer applications, the operational amplifier can function as

KEY FEATURES

•

•

5 V /

•

EPAD ( Electrically Programmable Analog Device)

•

Rail-to-rail input/output

a different Vos level (optional)

•

System level “calibration” capable

APPLICATIONS

• Sensor interface circuits

• Transducer biasing circuits

• Capacitive and charge integration circuits

• Biochemical probe interface

• Signal conditioning

• Portable instruments

• High source impedance electrode

amplifiers

• Precision Sample and Hold amplifiers

• Precision current to voltage converter

• Error correction circuits

• Sensor compensation circuits

• Precision gain amplifiers

• Periodic In-system calibration

• System output level shifter

PIN CONFIGURATION

* Contact factory for industrial temperature range

BENEFITS

• Ready to use off the shelf standard part

•

Custom automated trimming optional

•

Remote controlled automated trimming

•

In-System Programming capable

•

No external components

•

No internal clocking noise source

•

Simple and cost effective

•

Small package size

•

Extremely small total functional

volume size

•

Low system implementation cost

©2002 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com

ORDERING INFORMATION

Operating Temperature Range

-55

°C to +125°C0°C to +70°C0°C to +70°C

14-Pin

14-Pin

14-Pin

CERDIP

Small Outline

Plastic Dip

Package

Package (SOIC)

Package

ALD2724E DB

ALD2724E SB

ALD2724E PB

ALD2724 DB

ALD2724 SB

ALD2724 PB

V+

N/C

V-

1

2

3

4

5

6

7

8

9

10

11

12

13

14

N/C

TOP VIEW

DB, PB, SB PACKAGE