DUAL MICROPOWER PRECISION RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER
ALD2711A/ALD2711B
ALD2711
ADVANCED
LINEAR
DEVICES, INC.
GENERAL DESCRIPTION
The ALD2711 is a dual monolithic CMOS micropower precision high
slew rate operational amplifier intended for a broad range of analog
applications using ±1V to ±6V dual power supply systems, as well as
+2V to +12V 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 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 ALD2711 has been developed specifically for the +5V single
supply or ±1V to ±6V dual supply user. 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. Secondly, each device was designed to accommodate
mixed applications where digital and analog circuits may operate off
the same power supply or battery. Thirdly, 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
ALD2711 a versatile, micropower operational amplifier.
The ALD2711 with on-chip offset voltage trimming allows the device to
be used without nulling in most applications. The unique characteristics
of the 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 ±6.0V
• Single power supply +2V to +12V
• 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
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
PIN CONFIGURATION
1
2
3
4
8
7
6
5
TOP VIEW
DA, PA, SA PACKAGE
OUT
A
-IN
A
+IN
A
V
+
-IN
B
+IN
B
V
-
OUT
B
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 2711A DA ALD 2711A SA ALD 2711A PA
ALD 2711B DA ALD 2711B SA ALD 2711B PA
ALD 2711 DA ALD 2711 SA ALD 2711 PA
* Contact factory for industrial temperature range.
© 1998 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com