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ALD2726 Fiches technique(PDF) 1 Page - Advanced Linear Devices

No de pièce ALD2726
Description  DUAL EPAD TM ULTRA MICROPOWER OPERATIONAL AMPLIFIER
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Fabricant  ALD [Advanced Linear Devices]
Site Internet  http://www.aldinc.com
Logo ALD - Advanced Linear Devices

ALD2726 Fiches technique(HTML) 1 Page - Advanced Linear Devices

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DUAL EPAD™ ULTRA MICROPOWER OPERATIONAL AMPLIFIER
ADVANCED
LINEAR
DEVICES, INC.
ALD2726E/ALD2726
GENERAL DESCRIPTION
The ALD2726E/ALD2726 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
ALD2726E/ALD2726 is a dual version of the ALD1726E/ALD1726 opera-
tional amplifier. Each ALD2726E/ALD2726 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 ALD2726E/ALD2726 dual operational amplifier features rail-to-rail
input and output voltage ranges, tolerance to overvoltage input spikes of
300mV beyond supply rails, capacitive loading up to 25pF, extremely low
input currents of 0.01pA typical, high open loop voltage gain, useful
bandwidth of 700KHz, slew rate of 0.7V/
µs, and low typical supply current
of 50
µA for both amplifiers.
KEY FEATURES
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 “calibration” capability
Application Specific Programming mode
In-System Programming mode
Electrically programmable to compensate for
external component tolerances
0.01pA input bias current and 35
µV
input offset voltage
±1V to ±5V operation
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
ORDERING INFORMATION
Operating Temperature Range
-55
°C to +125°C0°C to +70°C0°C to +70°C
14-Pin
14-Pin
14-Pin
CERDIP
Small Outline
Plastic Dip
Package
Package (SOIC)
Package
ALD2726E DB
ALD2726E SB
ALD2726E PB
ALD2726 DB
ALD2726 SB
ALD2726 PB
* Contact factory for industrial temperature range
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
1
2
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5
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7
11
12
13
14
8
9
10
TOP VIEW
DB, PB, SB PACKAGE
VE 2A
VE 1A
V-
N/C
VE 2B
VE 1B
OUT B
OUT A
+IN A
-IN A
+IN B
-IN B
N/C
V+
© 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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