ald4704bdb Advanced Linear Devices Inc (ALD), ald4704bdb Datasheet

ald4704bdb

Manufacturer Part Number

ald4704bdb

Description

Quad Rail-to-rail Cmos Operational Amplifier

Manufacturer

Advanced Linear Devices Inc (ALD)

Datasheet

1.ALD4704BDB.pdf (6 pages)

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GENERAL DESCRIPTION

The ALD4704 is a quad CMOS monolithic operational amplifier with

MOSFET input that has rail-to-rail input and output voltage ranges. 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 approaches to within 1mV

of the power supply rails. This device is designed as an alternative to the

popular J-FET input operational amplifiers in applications where lower

operating voltages, such as 9V battery or 3.25V to 6V power supplies

are being used. It offers high slew rate of 5V/ s at low operating power.

The ALD4704 is designed and manufactured with Advanced Linear

Devices' standard enhanced ACMOS silicon gate CMOS process for low

unit cost and exceptional reliability.

The rail-to-rail input and output feature of the ALD4704 expand signal

voltage range for a given operating supply voltage and allow numerous

analog serial stages to be implemented without losing operating voltage

margin. The output stage is designed to drive up to 10mA into 400pF

capacitive and 1.5K

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

is at approximately 15mA clamp current. The output can both 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 s. For

large signal buffer applications, the operational amplifier can function as

an ultrahigh input impedance voltage follower/buffer that allows input

and output voltage swings from positive to negative supply voltages. This

feature is intended to greatly simplify systems design and eliminate higher

voltage power supplies in many applications.

ORDERING INFORMATION

* Contact factory for industrial temperature range

-55 C to +125 C

14-Pin

CERDIP

Package

ALD4704A DB

ALD4704B DB

ALD4704 DB

INEAR

DVANCED

EVICES,

Operating Temperature Range*

resistive loads at unity gain and up to 4000pF at a

NC.

QUAD RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER

0 C to +70 C

14-Pin

Small Outline

Package (SOIC)

ALD4704A SB

ALD4704B SB

ALD4704 SB

0 C to +70 C

14-Pin

Package

ALD4704A PB

ALD4704B PB

ALD4704 PB

Plastic Dip

• Symmetrical push-pull output drive

• Inputs can extend beyond supply rails by

• Outputs settle to 2mV of supply rails

• High capacitive load capability -- up to

• No frequency compensation required –

• Extremely low input bias currents -- 1.0pA

• Ideal for high source impedance applica-

• High voltage gain -- typically 100V/mV

• Output short circuit protected

• Unity gain bandwidth of 2.1MHz

FEATURES

• Rail-to-rail input and output voltage ranges

• 5.0V/ s slew rate

APPLICATIONS

• Voltage amplifier

• Voltage follower/buffer

• Charge integrator

• Photodiode amplifier

• Data acquisition systems

• High performance portable

• Signal conditioning circuits

• Low leakage amplifiers

• Active filters

• Sample/Hold amplifier

• Picoammeter

• Current to voltage converter

• Coaxial cable driver

• Capacitive sensor amplifier

• Piezoelectric transducer amplifier

PIN CONFIGURATION

300mV

4000pF

unity gain stable

typical (20pA max.)

tions

instruments

OUT

+IN

-IN

V +

DB, PB, SB Package

ALD4704A/ALD4704B

ALD4704

V-

OUT

-IN

+IN

OUT

-IN

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ald4704bdb Summary of contents

Page 1

A DVANCED L INEAR D I EVICES, NC. QUAD RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER GENERAL DESCRIPTION The ALD4704 is a quad CMOS monolithic operational amplifier with MOSFET input that has rail-to-rail input and output voltage ranges. The input voltage can be ...

Page 2

ABSOLUTE MAXIMUM RATINGS + Supply voltage, V referenced to V Supply voltage, V referenced Differential input voltage range Power dissipation Operating temperature range PB, SB package Storage temperature range Lead temperature, 10 seconds OPERATING ELECTRICAL CHARACTERISTICS T ...

Page 3

OPERATING ELECTRICAL CHARACTERISTICS (cont' 5.0V unless otherwise specified A S Parameter Symbol Min Maximum Load C L Capacitance Input Noise Voltage e n Input Current i Noise n t Settling s Time V = ...

Page 4

Design & Operating Notes: 1. The ALD4704 CMOS operational amplifier uses a 3 gain stage architecture and an improved frequency compensation scheme to achieve large voltage gain, high output driving capability, and better frequency stability. The ALD4704 is internally compensated ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS OUTPUT VOLTAGE SWING AS A FUNCTION OF SUPPLY VOLTAGE 125 10K 10K SUPPLY VOLTAGE ...

Page 6

RAIL-TO-RAIL VOLTAGE FOLLOWER/BUFFER +10V ~ 400pF 0 V 10V IN LOW OFFSET SUMMING AMPLIFIER 10K 50K +5V INPUT 1 INPUT 2 - 10K GAIN = Circuit Drives Large ...

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