A
DVANCED
L
INEAR
D
EVICES,
I
NC.
ALD1712A/ALD1712B
ALD1712
RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER
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 1KΩ 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 5µV/
°C
which eliminates many trim or temperature compensation circuits. For
precision applications, the 1712 is designed to settle to 0.01% in 8µs. 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 1KΩ 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
ORDERING INFORMATION
Operating Temperature Range
-55°C to +125°C
0°C to +70°C
0°C to +70°C
8-Pin
CERDIP
Package
ALD 1712A DA
ALD 1712B DA
ALD 1712 DA
8-Pin
Small Outline
Package (SOIC)
ALD 1712 ASA
ALD 1712 BSA
ALD 1712 SA
8-Pin
Plastic Dip
Package
ALD 1712A PA
ALD 1712B PA
ALD 1712 PA
PIN CONFIGURATION
N/C
V
S
OUT
N/C
N/C
-IN
+IN
V-
1
2
3
4
TOP VIEW
DA, PA, SA PACKAGE
2
8
7
6
5
* Contact factory for industrial temperature range
* N/C Pin is connected internally. Do not connect externally.
© 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
ALD [ ADVANCED LINEAR DEVICES ]
