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ALD2704 Datasheet(PDF) 1 Page - Advanced Linear Devices |
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ALD2704 Datasheet(HTML) 1 Page - Advanced Linear Devices |
1 / 6 page DUAL RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER ADVANCED LINEAR DEVICES, INC. ALD2704A/ALD2704B ALD2704 GENERAL DESCRIPTION The ALD2704 is a dual monolithic operational amplifier with MOSFET input that has rail-to-rail input and output voltage ranges. The input voltage range and output voltage range are very close to the positive and negative power supply voltages. Typically the input voltage can be beyond positive power supply voltage V+ or the negative power supply voltage V- by up to 300mV. The output voltage swings to within 60mV of either positive or negative power supply voltages at rated load. With high impedance load, the output voltage of the ALD2704 ap- proaches within 1mV of the power supply rails. This device is designed as an alternative to the popular J-FET input operational amplifier in applications where lower operating voltages, such as 9V battery or ±3.25V to ±6V power supplies are being used. The ALD2704 offers high slew rate of 5V/ µs. It is designed and manufactured with Advanced Linear Devices' standard enhanced ACMOS silicon gate CMOS process, and it offers low unit cost and exceptional reliability. The rail-to-rail input and output feature of the ALD2704 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 1.5K Ω resistive loads at unity gain and up to 4000pF at a gain of 5. Short circuit protection to either ground or the power supply rails is at approximately 15mA clamp current. Due to complementary output stage design, the output can source and sink 10mA into a load with symmetrical drive and is ideally suited for applications where push-pull voltage drive is desired. 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 2 µs. 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. FEATURES • Rail-to-rail input and output voltage ranges • Symmetrical push-pull output drives • Output settles to 2mV of supply rails • 5.0V/ µs slew rate • High capacitive load capability -- up to 4000pF • No frequency compensation required -- unity gain stable • Extremely low input bias currents -- <1.0pA typical (20pA max.) • Ideal for high source impedance applications • High voltage gain -- typically 100V/mV • Output short circuit protected • Unity gain bandwidth of 2.1MHz APPLICATIONS • Voltage amplifier • Voltage follower/buffer • Charge integrator • Photodiode amplifier • Data acquisition systems • High performance portable instruments • Signal conditioning circuits • Low leakage amplifiers • Active filters • Sample/Hold amplifier • Picoammeter • Current to voltage converter • Coaxial cable driver • Capacitive sensor amplifier • Piezoelectric transducer amplifier PIN CONFIGURATION 1 2 3 4 8 7 6 5 TOP VIEW DA, PA, SA PACKAGE OUT A -IN A +IN A V+ -IN B +IN B V - OUT B Operating Temperature Range* -55 °C to +125°C0°C to +70°C0°C to +70°C 8-Pin 8-Pin 8-Pin CERDIP Small Outline Plastic Dip Package Package (SOIC) Package ALD2704A DA ALD2704A SA ALD2704A PA ALD2704B DA ALD2704B SA ALD2704B PA ALD2704 DA ALD2704 SA ALD2704 PA ORDERING INFORMATION * 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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