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ALD2732 Datasheet(PDF) 1 Page - Advanced Linear Devices |
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ALD2732 Datasheet(HTML) 1 Page - Advanced Linear Devices |
1 / 9 page ©2014 Advanced Linear Devices, Inc., Vers. 2.0 www.aldinc.com 1 of 9 GENERAL DESCRIPTION The ALD2732A/ALD2732 is a precision dual low-cost low-power monolithic CMOS operational amplifier intended for a broad range of precision appli- cations requiring exremely low input signal power. Input signal power is the product of input offset voltage and input bias current, which represents the minimum required power draw from the signal source in order to drive the input of the operational amplifier. Input signal power is also a figure of merit in source loading and its associated error, and is a measure of the basic signal resolution possible through the operational amplifier for a given signal source. For certain types of signal sources, signal loading directly translates into a significant distortion or "interface noise equivalent" term. Manufactured with Advanced Linear Devices' enhanced EPAD® silicon gate CMOS process, the ALD2732A/ALD2732 is designed to set a new standard in low input signal power requirements. The typical input loading at its input is 0.03 mV offset voltage and 0.01 pA input bias current at 25C, resulting in 0.0003 fW input signal power draw. This input characteristic virtually eliminates any loading effects on most types of signal sources, offering unparalled accuracy and signal integrity and fidelity. The ALD2732A/ALD2732 is ideally suited for capacitive and high sensitivity, high impedance signal sources. It is readily suited for +5V single supply (or ±2V to ±5V) systems, with low operating power dissipation, a traditional strength of CMOS technology. It is offered with industry standard µA741 and ICL7611 pin configurations. The ALD2732A/ALD2732 can operate with rail to rail large signal input and output voltages with relatively high slew rate. The input voltage can be equal to or exceed the positive and negative supply voltages while the output voltage can swing close to these supply voltage rails. This feature signifi- cantly reduces the supply overhead voltage required to operate the opera- tional amplifier and allows numerous analog serial stages to operate in a low power supply environment. In addition, the device can accommodate mixed applications where digital and analog circuits may operate off the same power supply or battery. This device also features rail-to-rail input and output voltage ranges, tolerance to over-voltage input spikes of 300mV beyond supply rails, high open loop voltage gain, useful bandwidth of 1.5MHz, slew rate of 2.1V/µs, and low supply current of 0.8mA. Finally, the output stage can typically drive up to 400pF capacitive loads in the unity gain mode and up to 4000pF capacitive loads at a gain of 5. These features make the ALD2732A/ALD2732 a versatile, high precision operational amplifier that is user friendly and easy to use with virtually no source loading and zero input-loading induced source errors. Additionally, robust design and rigorous screening make this device especially suitable for operation in temperature-extreme environments and rugged conditions. FEATURES & BENEFITS • Extremely low input offset voltages and extremely low input bias currents • Extremely low input signal power • Robust high-temperature operation • Industry standard pinout • Rail-to-rail input/output • Input bias current of 0.01pA at input offset voltage of 25µV • No external components • No internal chopper clocking noise • No chopper dynamic power dissipation • Simple and cost effective • Small package size • Drive up to 4000pF load capacitance • Low power dissipation • Suitable for rugged, temperature-extreme environments APPLICATIONS • Precision cable driver • Sensor interface circuits • Unity gain buffer amplifier • Precision analog cable driver • 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 • System output level shifter e EPAD TM ® N A B L E D E PRECISION DUAL LOW POWER CMOS OPERATIONAL AMPLIFIER ALD2732A/ALD2732 ADVANCED LINEAR DEVICES, INC. Operating Temperature Range 0°C to +70°C0°C to +70°C -55°C to +125°C 8-Pin 8-Pin 8-Pin Small Outline Plastic Dip CERDIP Package (SOIC) Package Package ALD2732ASAL ALD2732APAL ALD2732ADA ALD2732SAL ALD2732PAL ALD2732DA * Contact factory for leaded (non-RoHS) or high temperature versions. ORDERING INFORMATION (“L” suffix denotes lead-free (RoHS)) PIN CONFIGURATION TOP VIEW SAL, PAL, DA PACKAGES 1 2 3 4 8 7 6 5 OUT A -IN A +IN A V+ -IN B +IN B V - OUT B |
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