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 Micropower
Rail-to-Rail Op-Amp Features User Programmable Offset Voltage
Sunnyvale,
CA., September 5, 2001 -- Advanced Linear Devices, Inc., introduces
the ALD1721E -- a precision monolithic operational amplifier with integrated
capability for accurately trimming the input offset voltage (Vos). Dissipating
less than 1.0 mW at 5 volts, the micropower op-amp utilizes CMOS FETs
as in-circuit-trimming elements for precisely setting the input offset
voltage. The initial Vos is pre-trimmed at the factory to maximum of
+/- 90 mV -- this can be further trimmed by the user for applications
requiring specific offset bias voltages over a range of +/- 15 mV. Other
key features include minimum 2 volt single power supply operation, rail-to-rail
inputs and outputs, tolerance to over-voltage input spikes of 300mV
beyond supply rails, extremely low input currents of 0.01pA typical,
high open loop voltage gain. For applications where user trimming in
the field is not required, the factory pre-trimmed part is available
as ALD1721. A dual version is also offered as the ALD2721E.
User trimming
is accomplished using the ALD E100 EPADŌ Programming Unit and application
specific adapter module. ALD electrically trimmed (EPAD) Op-Amps can
be pre-programmed before insertion, or in-system, thereby allowing for
circuit optimization in temperature and pressure environments, in encapsulated
modules, and under other actual field operating conditions. Once trimmed,
the set values are stored in the device indefinitely, even after power-down.
EPAD technology is fully compatible with conventional op-amps and other
analog components and brings a new level of precision to analog circuit
performance previously available only with the use of high-resolution
multi-turn trimmer potentiometers or laser trimming techniques. Electrically
trimmed op-amps are ideally suited for analog applications in low voltage
sensors, transducer biasing circuits, precision gain pre-amplifiers,
portable instruments and others demanding long-term, reliable performance.
The ALD1721E/ALD1721
is priced at $1.23/ $1.15 US in 10K quantities for plastic dip version.
Parts are packaged in a industry standard 8-pin plastic, ceramic and
small outline footprints. Prototype and production quantities are available
from stock in different temperatures ranging from -55 degrees C to +125
degrees C.
Advanced
Linear Devices, Inc. develops and manufactures a full line of precision
and micropower CMOS linear integrated circuits, including analog switches,
integrating dual-slope A/D converters, voltage comparators, operational
amplifiers, conventional and EPADŌ MOSFET transistors. Most standard
devices are also available as ASIC cells for the development of semi-custom
integrated circuits. ALD also serves customers in full custom design
engineering, including device and process development.
For further
information, contact John P. Skurla, Director of Marketing & Sales,
Advanced Linear Devices, Inc., 415 Tasman Drive, Sunnyvale, CA 94089
USA Tel: 408-747-1155; Fax: 408-747-1286; E-mail: jpskurla@aldinc.com.
Download Datasheet ALD1721E
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©2005
Copyright Advanced Linear Devices, Inc. All Rights Reserved.
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