GENERAL DESCRIPTION

The ALD2711A/ALD2711B/ALD2711 is a dual monolithic CMOS

micropower precision high slew rate operational amplifier intended for

a broad range of analog applications using ±1V to ±5V dual power

supply systems, as well as +2V to +10V battery operated systems. All

device characteristics are specified for +5V single supply or ±2.5V

dual supply systems. Typical supply current is 200μA at 5V supply

voltage. It is manufactured with Advanced Linear Devices' enhanced

ACMOS silicon gate CMOS process.

The ALD2711A/ALD2711B/ALD2711 has been developed specifically

for the +5V single supply or ±1V to ±5V dual supply user and has an

input stage that operates to +300mV above and -300mV below the

supply voltages with no adverse effects and/or phase reversals.

Several important characteristics of the device make application easier

to implement at those voltages. First, each operational amplifier can

operate with rail to rail input and output voltages. This means the

signal input voltage and output voltage can be at the positive and

negative supply voltages. This feature allows numerous analog serial

stages and flexibility in input signal bias levels. Second, each device

was designed to accommodate mixed applications where digital and

analog circuits may operate off the same power supply or battery.

Third, the output stage can typically drive up to 50pF capacitive and

10KΩ resistive loads.

These features, combined with extremely low input currents, high open

loop voltage gain, high useful bandwidth, and slew rate make the

ALD2711A/ALD2711B/ALD2711 a versatile, micropower operational

amplifier.

The ALD2711A/ALD2711B/ALD2711 with on-chip offset voltage trimming

allows the device to be used without nulling in most applications.

Additionally, robust design and rigorous screening make this device

especially suitable for operation in temperature-extreme environments and

rugged conditions.

The unique characteristics of the ALD2711A/ALD2711B/ALD2711 are

modeled in an available macromodel.

FEATURES

• Designed and characterized for 5V operation

• Linear mode operation with input voltages

300mV beyond supply rails

• Output voltages to within 2mV of power supply

rails when driving a high impedance load

• Unity gain stable

• Extremely low input bias currents -- 0.01pA

• Dual power supply ±1.0V to ±5.0V

• Single power supply +2V to +10V

• High voltage gain

• Output short circuit protected

• Unity gain bandwidth of 0.7MHz

• Slew rate of 0.7V/μs

• Low power dissipation

• Symmetrical complementary output drive

• Suitable for rugged, temperature-extreme

environments

APPLICATIONS

• Voltage follower/buffer/amplifier

• 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