A
DVANCED
ALD2702A/ALD2702B
ALD2702
LINEAR
D
EVICES, INC.
DUAL 5V RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER
FEATURES
GENERAL DESCRIPTION
• Rail-to-rail input and output voltage ranges
• Symmetrical push-pull class AB output
drivers
• All parameters specified for +5V single
supply or ±2.5V dual supply systems
• High load capacitance capability -- drives
up to 4000pF typical
The ALD2702A/ALD2702B/ALD2702 is a dual monolithic operational
amplifier intended primarilyforawiderangeofanalogapplicationsin+5V
single power supply and ±5V dual power supply systems as well as +4V
to+10Vbatteryoperatedsystems. Alldevicecharacteristicsarespecified
for +5V single supply or ±2.5V dual supply systems. The device has an
inputstagethatoperatesto+300mVaboveand-300mVbelowthesupply
voltages with no adverse effects and/or phase reversals. It offers popular
industry pin configuration.
• No frequency compensation required --
unity gain stable
• Extremely low input bias currents --
<1.0pA typical
The ALD2702A/ALD2702B/ALD2702 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
numerousanalogserialstagestobeimplementedwithoutlosingoperating
voltage margin. Second, the device was designed to accommodate
mixed applications where digital and analog circuits may work off the
same 5V power supply. Third, the output stage can drive up to 400pF
capacitive and 5KΩ resistive loads in non-inverting unity gain connection
and double the capacitance in the inverting unity gain mode.
• Idealforhighsourceimpedanceapplications
• Dual power supply ±2.5V to ±5V operation
• Single power supply +5V to +10V operation
• High voltage gain -- typically 85V/mV
@ ±2.5V and 250V/mV @ ±5.0V
• Drive as low as 2KΩ load with 5mA
drive current
• Output short circuit protected
• Unity gain bandwidth of 1.5MHz
• Slew rate of 1.9V/µs
• Low power dissipation
• Suitable for rugged, temperature-extreme
environments
These features, coupled with extremely low input currents, high voltage
gain, useful bandwidth of 1.5MHz, a slew rate of 1.9V/µs, low power
dissipation,lowoffsetvoltageandtemperaturedrift,maketheALD2702A/
ALD2702B/ALD2702atrulyversatile, userfriendly, operationalamplifier.
APPLICATIONS
The ALD2702A/ALD2702B/ALD2702 is designed and fabricated with
silicongateCMOStechnology, andofferslessthan1pA typicalinputbias
current. 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 7µV/°C which eliminates many trim or temperature
compensation circuits. For precision applications, the ALD2702A/
ALD2702B/ALD2702 is designed to settle to 0.01% in 8µs. Additionally,
robustdesignandrigorousscreeningmakethisdeviceespeciallysuitable
foroperationintemperature-extremeenvironmentsandruggedconditions.
• 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 (“L” suffix denotes lead-free (RoHS))
Operating Temperature Range
PIN CONFIGURATION
0°C to +70°C
0°C to +70°C
-55°C to 125°C
8-Pin
Small Outline
Package (SOIC)
8-Pin
Plastic Dip
Package
8-Pin
CERDIP
Package
+
OUT
1
8
V
A
A
-IN
2
3
7
6
OUT
-IN
B
ALD2702ASAL
ALD2702BSAL
ALD2702SAL
ALD2702APAL
ALD2702BPAL
ALD2702PAL
ALD2702ADA
ALD2702BDA
ALD2702DA
+IN
A
-
B
V
4
5
+IN
B
* Contact factory for leaded (non-RoHS) or high temperature versions.
TOP VIEW
SAL, PAL, DA PACKAGES
Rev 2.0 ©2010 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, CA 94089-1706 Tel: (408) 747-1155 Fax: (408) 747-1286
www.aldinc.com
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