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AD797BN Datasheet(PDF) 1 Page - Analog Devices |
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AD797BN Datasheet(HTML) 1 Page - Analog Devices |
1 / 16 page CONNECTION DIAGRAM 8-Pin Plastic Mini-DIP (N), Cerdip (Q) and SOIC (R) Packages 1 2 3 4 8 7 6 5 AD797 DECOMPENSATION & DISTORTION NEUTRALIZATION OUTPUT OFFSET NULL –IN +IN +V S –V S OFFSET NULL TOP VIEW REV. C 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 Ultralow Distortion, Ultralow Noise Op Amp AD797* One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 FEATURES Low Noise 0.9 nV/ √Hz typ (1.2 nV/√Hz max) Input Voltage Noise at 1 kHz 50 nV p-p Input Voltage Noise, 0.1 Hz to 10 Hz Low Distortion –120 dB Total Harmonic Distortion at 20 kHz Excellent AC Characteristics 800 ns Settling Time to 16 Bits (10 V Step) 110 MHz Gain Bandwidth (G = 1000) 8 MHz Bandwidth (G = 10) 280 kHz Full Power Bandwidth at 20 V p-p 20 V/ s Slew Rate Excellent DC Precision 80 V max Input Offset Voltage 1.0 V/ C VOS Drift Specified for 5 V and 15 V Power Supplies High Output Drive Current of 50 mA APPLICATIONS Professional Audio Preamplifiers IR, CCD, and Sonar Imaging Systems Spectrum Analyzers Ultrasound Preamplifiers Seismic Detectors ADC/DAC Buffers PRODUCT DESCRIPTION The AD797 is a very low noise, low distortion operational amplifier ideal for use as a preamplifier. The low noise of 0.9 nV/ √Hz and low total harmonic distortion of –120 dB at audio bandwidths give the AD797 the wide dynamic range 5 0 10M 3 1 100 2 10 4 1M 100k 10k 1k FREQUENCY – Hz AD797 Voltage Noise Spectral Density *Patent pending. necessary for preamps in microphones and mixing consoles. Furthermore, the AD797’s excellent slew rate of 20 V/ µs and 110 MHz gain bandwidth make it highly suitable for low fre- quency ultrasound applications. The AD797 is also useful in IR and Sonar Imaging applications where the widest dynamic range is necessary. The low distor- tion and 16-bit settling time of the AD797 make it ideal for buffering the inputs to Σ∆ ADCs or the outputs of high resolu- tion DACs especially when they are used in critical applications such as seismic detection and spectrum analyzers. Key features such as a 50 mA output current drive and the specified power supply voltage range of ±5 to ±15 volts make the AD797 an excellent general purpose amplifier. –90 –130 300k –120 300 100 –110 –100 100k 30k 10k 3k 1k FREQUENCY – Hz MEASUREMENT LIMIT 0.001 0.0003 0.0001 THD vs. Frequency |
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