A
L
D
DVANCED
INEAR
EVICES, INC.
ALD4702A/ALD4702B
ALD4702
QUAD 5V RAIL-TO-RAIL PRECISION OPERATIONAL AMPLIFIER
GENERAL DESCRIPTION
FEATURES
The ALD4702A/ALD4702B/ALD4702 is a quad monolithic precision
CMOS rail-to-rail operational amplifier intended for a broad range of
analogapplicationsusing±2.5Vto±5Vdualpowersupplysystems, as
wellas+4Vto+10Vbatteryoperatedsystems. Alldevicecharacteristics
arespecifiedfor+5Vsinglesupplyor±2.5Vdualsupplysystems. Total
supply current for four operational amplifiers is 6mA maximum at 5V
supply voltage. It is manufactured with Advanced Linear Devices'
enhanced ACMOS silicon gate CMOS process.
• 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
• Inputscanextendbeyondsupplyrailsby300mV
• Outputs settle to 2mV of supply rails
• High load capacitance capability up to 4000pF
• No frequency compensation required --
unity gain stable
TheALD4702A/ALD4702B/ALD4702isdesignedtoofferatrade-offof
performance parameters providing a wide range of desired
specifications. It has been developed specifically with the +5V single
supply or ±2.5V dual supply user andoffers the popular industry pin
configuration of LM324 and ICL7641 types.
• Extremely low input bias currents --
1.0pA typical
• Ideal for high source impedance applications
• Dual power supply ±2.5V to ±5.0V 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
Severalimportantcharacteristicsofthedevicemakemanyapplications
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. 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.
• 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 convert
• Coaxial cable driver
These features, coupled with extremely low input currents, high
voltage gain, useful bandwidth of 1.5MHz, a slew rate of 2.1V/µs, low
power dissipation, low offset voltage and temperature drift, make the
ALD4702A/ALD4702B/ALD4702 a truly versatile, user friendly,
operational amplifier.
The ALD4702A/ALD4702B/ALD4702 is designed and fabricated with
silicon gate CMOS technology, and offers 1pA typical input bias
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 ALD4702A/
ALD4702B/ALD4702isdesignedtosettleto0.01%in8µs. Additionally,
robust design and rigorous screening make this device especially
suitableforoperationintemperature-extremeenvironmentsandrugged
conditions.
PIN CONFIGURATION
1
2
3
OUT
-IN
14 OUT
A
A
A
D
ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS))
13 -IN
D
Operating Temperature Range
0°C to +70°C
0°C to +70°C
-55°C to 125°C
+IN
12
+IN
D
14-Pin
Small Outline
Package (SOIC)
14-Pin
Plastic Dip
Package
14-Pin
CERDIP
Package
+
B
B
B
V
V-
4
5
11
10
+IN
+IN
-IN
C
ALD4702ASBL
ALD4702BSBL
ALD4702SBL
ALD4702APBL
ALD4702BPBL
ALD4702PBL
ALD4702ADB
ALD4702BDB
ALD4702DB
6
7
9
8
-IN
C
OUT
OUT
C
* Contact factory for leaded (non-RoHS) or high temperature versions.
TOP VIEW
SBL, PBL, DB 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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