ALD4702A/ALD4702B

ALD4702

QUAD 5V RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER

FEATURES

• Rail-to-rail input and output voltage ranges

• Symmetrical push-pull class AB output drivers

• All parameters specified for +5V single supply

or

±2.5V dual supply systems

• Inputs can extend beyond supply rails by 300mV

• Outputs settle to 2mV of supply rails

• High load capacitance capability up to 4000pF

• No frequency compensation required --

unity gain stable

• Extremely low input bias currents --

1.0pA typical

• Ideal for high source impedance applications

• Dual power supply

±2.5V to ±5.0V operation

• Single power supply +5V to +12V operation

• High voltage gain-typically 85V/mV @

±2.5V

and 250V/mV @

±5.0V

• Drive as low as 2K

Ω load with 5mA drive current

• Output short circuit protected

• Unity gain bandwidth of 1.5MHz

• Slew rate of 1.9V/

µs

• Low power dissipation

GENERAL DESCRIPTION

The ALD4702 is a quad monolithic precision CMOS rail-to-rail

operational amplifier intended for a broad range of analog applications

using

±2.5V to ±6V dual power supply systems, as well as +4V to

+12V battery operated systems.

All device characteristics are

specified for +5V single supply or

±2.5V dual supply systems. Total

supply current for four operational amplifiers is 6mA maximum at 5V

supply voltage. It is manufactured with Advanced Linear Devices'

enhanced ACMOS silicon gate CMOS process.

The ALD4702 is designed to offer a trade-off of performance

parameters providing a wide range of desired specifications. It offers

the popular industry pin configuration of LM324 and ICL7641 types.

The ALD4702 has been developed specifically with the +5V single

supply or

±2.5V dual supply user. Several important characteristics

of the device make many applications easy to implement for these

supply voltages. First, the operational amplifier can operate with rail

to rail input and output voltages. This feature allows numerous

analog serial stages to be implemented without losing operating

voltage margin. Secondly, the device was designed to accommodate

mixed applications where digital and analog circuits may work off the

same 5V power supply. Thirdly, the output stage can drive up to

400pF capacitive and 5K

Ω resistive loads in non-inverting unity gain

connection and double the capacitance in the inverting unity gain

mode.

These features, coupled with extremely low input currents, high

voltage gain, useful bandwidth of 1.5MHz, a slew rate of 2.1V/

µs, low

power dissipation, low offset voltage and temperature drift, make the

ALD4702 a truly versatile, user friendly, operational amplifier.

The ALD4702 is designed and fabricated with silicon gate CMOS

technology, and offers 1pA typical input bias current. On-chip offset

voltage trimming allows the device to be used without nulling in most

applications. The device offers typical offset drift of less than 7

µV/

°C which eliminates many trim or temperature compensation circuits.

For precision applications, the ALD4702 is designed to settle to

0.01% in 8

µs.

APPLICATIONS

• Voltage amplifier

• Voltage follower/buffer

• 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 convert

• Coaxial cable driver

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

ALD4702A DB

ALD4702A SB

ALD4702A PB

ALD4702B DB

ALD4702B SB

ALD4702B PB

ALD4702 DB

ALD4702 SB

ALD4702 PB

* Contact factory for industrial temperature range

PIN CONFIGURATION

DB, PB, SB Package

OUT D

-IN D

+IN D

V-

+IN C

-IN C

OUT C

OUT A

-IN A

+IN A

V+

+IN B

-IN B

OUT B

1

2

3

4

5

6

7

8

9

10

11

12

13

14

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