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ALD2722 Datasheet, PDF (1/10 Pages) Advanced Linear Devices – DUAL EPAD TM OPERATIONAL AMPLIFIER | |||
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ADVANCED
LINEAR
DEVICES, INC.
DUAL EPAD⢠OPERATIONAL AMPLIFIER
ALD2722E/ALD2722
KEY FEATURES
⢠5V single supply operation
⢠EPAD ( Electrically Programmable Analog Device)
⢠User programmable VOS trimmer
⢠Computer-assisted trimming
⢠Rail-to-rail input/output
⢠Compatible with standard EPAD Programmer
⢠Each amplifier VOS can be trimmed to a different Vos level
⢠High precision through in-system circuit trimming
⢠Reduces or eliminates VOS, PSRR, CMRR and TCVOS errors
⢠System level âcalibrationâ capability
⢠Application Specific Programming mode
⢠In-System Programming mode
⢠Electrically programmable to compensate for
external component tolerances
⢠Achieves 0.01pA input bias current and 25µV
input offset voltage
GENERAL DESCRIPTION
The ALD2722E/ALD2722 is a dual monolithic rail-to-rail precision CMOS
operational amplifier with integrated user programmable EPAD (Electri-
cally Programmable Analog Device) based offset voltage adjustment. The
ALD2722E/ALD2722 is a dual version of the ALD1722E/ALD1722 opera-
tional amplifier. Each ALD2722E/ALD2722 operational amplifier features
individual, user-programmable offset voltage trimming resulting in signifi-
cantly enhanced total system performance and user flexibility. EPAD
technology is an exclusive ALD design which has been refined for analog
applications where precision voltage trimming is necessary to achieve a
desired performance. It utilizes CMOS FETs as in-circuit elements for
trimming of offset voltage bias characteristics with the aid of a personal
computer under software control. Once programmed, the set parameters
are stored indefinitely. EPAD offers the circuit designer a convenient and
cost-effective trimming solution for achieving the very highest amplifier/
system performance.
The ALD2722E/ALD2722 dual operational amplifier features rail-to-rail
input and output voltage ranges, tolerance to overvoltage input spikes of
300mV beyond supply rails, high capacitive loading up to 4000pF, ex-
tremely low input currents of 0.01pA typical, high open loop voltage gain,
useful bandwidth of 1.5MHz, slew rate of 1.9V/µs, and low typical supply
current of 2mA for both amplifiers.
ORDERING INFORMATION
Operating Temperature Range
-55°C to +125°C
0°C to +70°C
0°C to +70°C
14-Pin
CERDIP
Package
14-Pin
Small Outline
Package (SOIC)
14-Pin
Plastic Dip
Package
ALD2722E DB
ALD2722 DB
ALD2722E SB
ALD2722 SB
ALD2722E PB
ALD2722 PB
BENEFITS
⢠Eliminates manual and elaborate
system trimming procedures
⢠Remote controlled automated trimming
⢠In-System Programming capability
⢠No external components
⢠No internal clocking noise source
⢠Simple and cost effective
⢠Small package size
⢠Extremely small total functional
volume size
⢠Low system implementation cost
⢠Micropower
APPLICATIONS
⢠Sensor interface circuits
⢠Transducer biasing circuits
⢠Capacitive and charge integration circuits
⢠Biochemical probe interface
⢠Signal conditioning
⢠Portable instruments
⢠High source impedance electrode
amplifiers
⢠Precision Sample and Hold amplifiers
⢠Precision current to voltage converter
⢠Error correction circuits
⢠Sensor compensation circuits
⢠Precision gain amplifiers
⢠Periodic In-system calibration
⢠System output level shifter
PIN CONFIGURATION
-IN A 1
+IN A 2
V- 3
N/C 4
N/C 5
+IN B 6
-IN B 7
14 VE 2A
13 VE 1A
12 OUT A
11 V+
10 OUT B
9 VE 1B
8 VE 2B
TOP VIEW
DB, PB, SB PACKAGE
* Contact factory for industrial temperature range
© 1998 Advanced Linear Devices, Inc. 415 Tasman Drive, Sunnyvale, California 94089 -1706 Tel: (408) 747-1155 Fax: (408) 747-1286 http://www.aldinc.com
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