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AD823AR Datasheet(PDF) 1 Page - Analog Devices |
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AD823AR Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a Dual, 16 MHz, Rail-to-Rail FET Input Amplifier AD823 © Analog Devices, Inc., 1995 One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 FEATURES Single Supply Operation Output Swings Rail to Rail Input Voltage Range Extends Below Ground Single Supply Capability from +3 V to +36 V High Load Drive Capacitive Load Drive of 500 pF, G = +1 Output Current of 15 mA, 0.5 V from Supplies Excellent AC Performance on 2.6 mA/Amplifier –3 dB Bandwidth of 16 MHz, G = +1 350 ns Settling Time to 0.01% (2 V Step) Slew Rate of 22 V/ s Good DC Performance 800 V Max Input Offset Voltage 2 V/ C Offset Voltage Drift 25 pA Max Input Bias Current Low Distortion –108 dBc Worst Harmonic @ 20 kHz Low Noise 16 nV/ √Hz @ 10 kHz No Phase Inversion with Inputs to the Supply Rails APPLICATIONS Battery Powered Precision Instrumentation Photodiode Preamps Active Filters 12- to 16-Bit Data Acquisition Systems Medical Instrumentation CONNECTION DIAGRAM 8-Pin Plastic Mini-DIP and 8-Lead SOIC 1 2 3 4 8 7 6 5 AD823 OUT1 +IN2 –IN2 OUT2 +VS –IN1 +IN1 –VS PRODUCT DESCRIPTION The AD823 is a dual precision, 16 MHz, JFET input op amp that can operate from a single supply of +3.0 V to +36 V, or dual supplies of ±1.5 V to ±18 V. It has true single supply capability with an input voltage range extending below ground in single supply mode. Output voltage swing extends to within 50 mV of each rail for IOUT ≤ 100 µA providing outstanding out- put dynamic range. Offset voltage of 800 µV max, offset voltage drift of 2 µV/°C, input bias currents below 25 pA and low input voltage noise provide dc precision with source impedances up to a Gigohm. 16 MHz, –3 dB bandwidth, –108 dB THD @ 20 kHz and 22 V/ µs slew rate are provided with a low supply current of 2.6 mA per amplifier. The AD823 drives up to 500 pF of direct capacitive load as a follower, and provides an output current of 15 mA, 0.5 V from the supply rails. This allows the amplifier to handle a wide range of load conditions. This combination of ac and dc performance, plus the outstand- ing load drive capability results in an exceptionally versatile am- plifier for applications such as A/D drivers, high-speed active filters, and other low voltage, high dynamic range systems. The AD823 is available over the industrial temperature range of –40 °C to +85°C and is offered in both 8-pin plastic DIP and SOIC packages. 3V GND RL = 100kΩ CL = 50pF VS = +3V 200µs 500mV Figure 1. Output Swing, VS = +3 V, G = +1 FREQUENCY – Hz –8 1k –6 –7 2 1 10k 100k 1M VS = +5V G = +1 –5 –4 –3 –2 –1 0 10M Figure 2. Small Signal Bandwidth, G = +1 |
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