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ALD2722EDB Datasheet(PDF) 1 Page - Advanced Linear Devices |
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ALD2722EDB Datasheet(HTML) 1 Page - Advanced Linear Devices |
1 / 10 page DUAL EPAD™ OPERATIONAL AMPLIFIER ADVANCED LINEAR DEVICES, INC. ALD2722E/ALD2722 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. 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 “calibration” capability • Application Specific Programming mode • In-System Programming mode • Electrically programmable to compensate for external component tolerances • Achieves 0.01pA input bias current and 25 µV input offset voltage 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 ALD2722E DB ALD2722E SB ALD2722E PB ALD2722 DB ALD2722 SB ALD2722 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 3 4 5 6 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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