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ALD2731 Datasheet(PDF) 1 Page - Advanced Linear Devices

Part # ALD2731
Description  PRECISION DUAL MICROPOWER CMOS OPERATIONAL AMPLIFIER
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Manufacturer  ALD [Advanced Linear Devices]
Direct Link  http://www.aldinc.com
Logo ALD - Advanced Linear Devices

ALD2731 Datasheet(HTML) 1 Page - Advanced Linear Devices

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©2014 Advanced Linear Devices, Inc., Vers. 2.0
www.aldinc.com
1 of 9
e
EPAD
TM
®
N A
B L
E D
E
PRECISION DUAL MICROPOWER CMOS OPERATIONAL AMPLIFIER
ALD2731A/ALD2731
ADVANCED
LINEAR
DEVICES, INC.
GENERAL DESCRIPTION
The ALD2731A/ALD2731 is a precision dual low-cost high-slew-rate
monolithic CMOS micropower 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. Supply current is 250µA per amplifier maximum at 5V supply
voltage. It is manufactured with Advanced Linear Devices' enhanced
EPAD® silicon gate CMOS process.
The ALD2731A/ALD2731 features extremely low input power require-
ments, practically removing any leading effects on high source imped-
ance signal sources such as cpacitive sensors. These devices do not add
any significant errors, regardless of what the souce impedance variations
may be, thereby improving overall system precision and accuracy. The
device is designed to offer the benefits of CMOS technology by providing
a wide range of desired specifications. The most important of these
specifications is extremely low input bias/offset currents at extremely low
input offset voltages. It has been developed specifically for the +5V single
supply or ±1V to ±5V dual supply user and offers the popular industry
standard pin configuration of µA741 and ICL7611 types.
Several additional important characteristics of the device make applica-
tion easier to implement at those voltages. First, the operational amplifier
can operate with rail to rail input and output voltages. This means the
signal input voltage and output voltage can be equal to the positive and
negative supply voltages. This feature allows numerous analog serial
stages and flexibility in input signal bias levels. Second, the 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 of 100V/mV, useful bandwidth of 700KHz, a slew rate
of 0.7V/µs, low power dissipation of 0.5mW, low offset voltage and
temperature drift, make the ALD2731A/ALD2731 a versatile, micropower
operational amplifier.
The ALD2731A/ALD2731, designed and fabricated with silicon gate
CMOS technology, offers 0.01pA typical input bias current. On chip offset
voltage trimming, using EPAD technology, allows the device to be used
without nulling. Additionally, robust design and rigorous screening make
this device especially suitable for operation in temperature-extreme
environments and rugged conditions.
FEATURES & BENEFITS
• Two package versions -- lead-free (RoHS
compliant) and legacy leaded (tin-lead)
• Extremely low input offset voltages --
0.6mV typical
• Extremely low input bias currents --
0.01pA typical
• All parameters specified for +5V single
supply or ±2.5V dual supply systems
• Rail to rail input and output voltage ranges
• No frequency compensation required --
unity gain stable
• Ideal for high source impedance applications
• Dual power supplies ±1.0V to ±5.0V
• Single power supply +2.0V to +10.0V
• High voltage gain -- typ. 100V/mV @ ±2.5V
• Drive as low as 10KΩ load
• Output short circuit protected
• Unity gain bandwidth of 0.7MHz
• Slew rate of 0.7V/µs
• Micropower symmetrical complementary
output drive
• Suitable for rugged, temperature-extreme
environments
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
* Contact factory for leaded (non-RoHS) or high temperature versions.
ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS))
Operating Temperature Range
0°C to +70°C0°C to +70°C
-55°C to 125°C
8-Pin
8-Pin
8-Pin
Small Outline
Plastic Dip
CERDIP
Package (SOIC)
Package
Package
ALD2731ASAL
ALD2731APAL
ALD2731SAL
ALD2731PAL
ALD2731ASA
ALD2731APA
ALD2731ADA
ALD2731SA
ALD2731PA
ALD2731DA
PIN CONFIGURATION
TOP VIEW
SAL, PAL, SA, PA, DA PACKAGES
1
2
3
4
8
7
6
5
OUT A
-IN A
+IN A
V+
-IN B
+IN B
V -
OUT B


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