A
L
D
DVANCED
INEAR
EVICES, INC.
ALD4704A/ALD4704B
ALD4704
QUAD RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER
GENERAL DESCRIPTION
FEATURES
The ALD4704A/ALD4704B/ALD4704 is a dual monolithic operational • Rail-to-rail input and output voltage ranges
amplifier with MOSFET input that has rail-to-rail input and output voltage • 5.0V/µs slew rate
ranges. Theinput voltagerangeandoutputvoltagerangeareveryclose • Symmetrical push-pull output drive
to the positive and negative power supply voltages. Typically the input • Inputscanextendbeyondsupplyrailsby300mV
+
voltage can be beyond positive power supply voltage V or the negative • Outputs settle to 2mV of supply rails
-
power supply voltage V by up to 300mV. The output voltage swings to • High capacitive load capability -- up to 4000pF
within 60mV of either positive or negative power supply voltages at rated • No frequency compensation required -- unity
load.
gain stable
• Extremely low input bias currents -- 1.0pA
typical (20pA max.)
With high impedance load, the output voltage of the ALD4704A/
ALD4704B/ALD4704 approaches within 1mV of the power supply rails. • Ideal for high source impedance applications
This device is designed as an alternative to the popular J-FET input • High voltage gain -- 100V/mV typical
operational amplifier in applications where lower operating voltages, • Output short circuit protected
suchas9Vbatteryor±3.25Vto ±5Vpowersuppliesarebeingused. The • Unity gain bandwidth of 2.1MHz
ALD4704A/ALD4704B/ALD4704 offers high slew rate of 5V/µs. It is • Suitable for rugged, temperature-extreme
designed and manufactured with Advanced Linear Devices' standard
enhanced ACMOS silicon gate CMOS process, and it offers low unit
cost and exceptional reliability.
environments
APPLICATIONS
The rail-to-rail input and output feature of the ALD4704A/ALD4704B/
ALD4704 expands signal voltage range for a given operating supply
voltage and allows numerous analog serial stages to be implemented
without losing operating voltage margin. The output stage is designed
to drive up to 10mA into 400pF capacitive and 1.5KΩ resistive loads at
unitygainandupto4000pFatagainof5.Shortcircuitprotectiontoeither
ground or the power supply rails is at approximately 15mA clamp
current. Due to complementary output stage design, the output can
• Voltage amplifier
• Voltage follower/buffer
• Charge integrator
• Photodiode amplifier
• Data acquisition systems
• High performance portable
instruments
source and sink 10mA into a load with symmetrical drive and is ideally • Signal conditioning circuits
suited for applications where push-pull voltage drive is desired.
• Low leakage amplifiers
• Active filters
For each of the operational amplifier, the offset voltage is trimmed on-
chip to eliminate the need for external nulling in many applications. For
precision applications, the output is designed to settle to 0.1% in 2µs. In
large signal buffer applications, the operational amplifier can function as
an ultrahigh input impedance voltage follower /buffer that allows input
and output voltage swings from positive to negative supply voltages.
This feature is intended to greatly simplify systems design and eliminate
higher voltage power supplies in many applications. Additionally, robust
design and rigorous screening make this device especially suitable for
operation in temperature-extreme environments and rugged conditions.
• Sample/Hold amplifier
• Picoammeter
• Current to voltage converter
• Coaxial cable driver
• Capacitive sensor amplifier
• Piezoelectric transducer amplifier
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
+IN
12
+IN
D
0°C to +70°C
0°C to +70°C
-55°C to 125°C
+
B
B
B
V
V-
4
5
11
10
14-Pin
Small Outline
Package (SOIC)
14-Pin
Plastic Dip
Package
14-Pin
CERDIP
Package
+IN
+IN
-IN
C
6
7
9
8
-IN
C
ALD4704ASBL
ALD4704BSBL
ALD4704SBL
ALD4704APBL
ALD4704BPBL
ALD4704PBL
ALD4704ADB
ALD4704BDB
ALD4704DB
OUT
OUT
C
TOP VIEW
SBL, PBL, DB PACKAGES
* Contact factory for leaded (non-RoHS) or high temperature versions.
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