* N/C Pin is connected internally. Do not connect externally.

GENERAL DESCRIPTION

The ALD1712 is a monolithic precision operational amplifier intended

primarily for a wide range of analog applications in +5V single power supply

and

±5V dual power supply systems as well as +6V to 12V battery operated

systems. All device characteristics are specified for +5V single supply or

±2.5V dual supply systems. It is manufactured with Advanced Linear

Devices' enhanced ACMOS silicon gate CMOS process and is available as

a standard cell in ALD's ASIC "Function-Specific" library.

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 ALD1712 has been developed specifically with the 5V single supply or

±2.5V dual supply user in mind. 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 1K

Ω resistive loads in

non-inverting unity gain connection, and up to 4000pF at a gain of 5. These

features, coupled with extremely low input currents, high voltage gain,

useful bandwidth of 1.5MHz, slew rate of 2.1V/

µs, low power dissipation,

low offset voltage and temperature drift, make the ALD1712 a truly

versatile, user friendly, operational amplifier.

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 5

µV/

°C which eliminates many trim or temperature compensation circuits. For

precision applications, the 1712 is designed to settle to 0.01% in 8

µs. The

unique characteristics at input and output are modeled in an available

macromodel.

FEATURES

• Linear mode operation with input voltages

300mV beyond supply rails

• Symmetrical complementary output drive

• Output voltages to within 2mV of power

supply rails

• High load capacitance capability --

4000pF typical

• No frequency compensation required --

unity gain stable

• Extremely low input bias currents --

0.01pA typical

• Dual power supply

±2.5V to ±6.0V

• Single power supply +5V to +12V

• High voltage gain – typically 85V/mV

@

±2.5V and 250V/mV @ ±5.0V

• Drive as low as 1K

Ω load with 5mA

drive current

• Output short circuit protected

• Unity gain bandwidth of 1.5MHz

• Slew rate of 2.1V/

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 converter

• Coaxial cable driver

PIN CONFIGURATION

RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER

ALD1712A/ALD1712B

ALD1712

1

2

2

3

4

8

7

6

5

TOP VIEW

DA, PA, SA PACKAGE

N/C

-IN

+IN

N/C

OUT

N/C

V-

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 1712A DA

ALD 1712 ASA

ALD 1712A PA

ALD 1712B DA

ALD 1712 BSA

ALD 1712B PA

ALD 1712 DA

ALD 1712 SA

ALD 1712 PA

* Contact factory for industrial temperature range

© 2005.1 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com