ALD1712A ALD [Advanced Linear Devices], ALD1712A Datasheet

ALD1712A

Manufacturer Part Number

ALD1712A

Description

RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER

Manufacturer

ALD [Advanced Linear Devices]

Datasheet

1.ALD1712A.pdf (6 pages)

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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

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

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 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/ s, 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 V/

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

unique characteristics at input and output are modeled in an available

macromodel.

ORDERING INFORMATION

* Contact factory for industrial temperature range

C which eliminates many trim or temperature compensation circuits. For

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

2.5V dual supply user in mind. Several important characteristics of the

-55 C to +125 C

8-Pin

CERDIP

Package

ALD 1712A DA

ALD 1712B DA

ALD 1712 DA

INEAR

DVANCED

EVICES,

Operating Temperature Range

NC.

RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER

0 C to +70 C

8-Pin

Small Outline

Package (SOIC)

ALD 1712 ASA

ALD 1712 BSA

ALD 1712 SA

0 C to +70 C

Plastic Dip

ALD 1712 PA

8-Pin

Package

ALD 1712A PA

ALD 1712B PA

FEATURES

• Linear mode operation with input voltages

• Symmetrical complementary output drive

• Output voltages to within 2mV of power

• High load capacitance capability --

• No frequency compensation required --

• Extremely low input bias currents --

• Dual power supply 2.5V to 6.0V

• Single power supply +5V to +12V

• High voltage gain – typically 85V/mV

• Drive as low as 1K load with 5mA

• Output short circuit protected

• Unity gain bandwidth of 1.5MHz

• Slew rate of 2.1V/ s

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

N/C

300mV beyond supply rails

supply rails

4000pF typical

unity gain stable

0.01pA typical

@ 2.5V and 250V/mV @ 5.0V

drive current

+IN

-IN

V -

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

DA, PA, SA PACKAGE

ALD1712A/ALD1712B

TOP VIEW

ALD1712

N/C

OUT

Related parts for ALD1712A

ALD1712A Summary of contents

Page 1

... Picoammeter • Current to voltage converter • Coaxial cable driver PIN CONFIGURATION +70 C N/C 8-Pin -IN Plastic Dip Package +IN ALD 1712A PA ALD 1712B ALD 1712 PA * N/C Pin is connected internally. Do not connect externally. ALD1712A/ALD1712B ALD1712 OUT 4 5 N/C TOP VIEW ...

Page 2

... V high 2.35 O Output Short I SC Circuit Current Supply I S Current Power P D Dissipation Input C IN Capacitance Bandwidth B 1.0 W Slew Rate S 1.4 R Rise time t r Overshoot Factor ALD1712A/ALD1712B ALD1712 PA,SA package DA package 1712A 1712B Typ Max Min Typ Max 6.0 2.0 6.0 12.0 4.0 12.0 0.05 0.15 0.1 0.25 0.35 0.55 0.01 10 0.01 10 280 280 0.01 10 0.01 10 280 280 5 ...

Page 3

... Current Input Bias I B Current Power Supply PSRR Rejection Ratio Common Mode CMRR Rejection Ratio Large Signal A V Voltage Gain Output Voltage V low O Range V high O ALD1712A/ALD1712B ALD1712 1712A 1712B Min Typ Max Min Typ Max 400 400 4000 4000 26 26 0.6 0.6 8.0 8.0 3.0 3.0 1712A ...

Page 4

... AMBIENT TEMPERATURE ( C) ALD1712A/ALD1712B ALD1712 switching does take place if the operational amplifier is connected as a unity gain buffer and should make provision in his design to allow for input offset voltage variations. 3. The input bias and offset currents are essentially input protection diode reverse bias leakage currents, and are typically less than 1pA at room temperature ...

Page 5

... OPEN LOOP VOLTAGE GAIN AS A FUNCTION OF LOAD RESISTANCE 1000 100 10K 100K LOAD RESISTANCE ( ) VOLTAGE NOISE DENSITY AS A FUNCTION OF FREQUENCY 150 125 100 100 1K 10K FREQUENCY (Hz) ALD1712A/ALD1712B ALD1712 2.5V S +75 +100 +125 1000K ...

Page 6

... VOLTAGE PRESET Relay LOW LEAKAGE CAPACITOR e.g. TEFLON CAPACITOR TYPE K11B104KSW Component Research Inc. • All capacitance values are in F unless otherwise specified. • RELAYS 1 & 2 are of type 4705, Gordos Corporation. ALD1712A/ALD1712B ALD1712 TYPICAL APPLICATIONS 0.1 F OUTPUT =10K L .01 F PHOTODIODE OUTPUT ...

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