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ADA4899-1 Datasheet(PDF) 1 Page - Analog Devices |
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ADA4899-1 Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page Unity-Gain Stable, Ultralow Distortion, 1 nV/ √Hz Voltage Noise, High Speed Op Amp ADA4899-1 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2005–2007 Analog Devices, Inc. All rights reserved. FEATURES Unity-gain stable Ultralow noise: 1 nV/√Hz, 2.6 pA/√Hz Ultralow distortion −117 dBc at 1 MHz High speed −3 dB bandwidth: 600 MHz (G = +1) Slew rate: 310 V/μs Offset voltage: 230 μV maximum Low input bias current: 100 nA Wide supply voltage range: 5 V to 12 V Supply current: 14.7 mA High performance pinout Disable mode APPLICATIONS Analog-to-digital drivers Instrumentation Filters IF and baseband amplifiers DAC buffers Optical electronics CONNECTION DIAGRAMS 1 DISABLE ADA4899-1 2 FEEDBACK NC = NO CONNECT 3 –IN +IN 4 +VS 8 VOUT 7 NC 6 –VS 5 Figure 1. 8-Lead LFCSP_VD (CP-8-2) 1 FEEDBACK ADA4899-1 2 –IN 3 +IN –VS 4 DISABLE 8 +VS 7 VOUT 6 –VS 5 Figure 2. 8-Lead SOIC_N_EP (RD-8-1) GENERAL DESCRIPTION The ADA4899-1 is an ultralow noise (1 nV/√Hz) and distortion (<−117 dBc @1 MHz) unity-gain stable voltage feedback op amp, the combination of which makes it ideal for 16-bit and 18-bit systems. The ADA4899-1 features a linear, low noise input stage and internal compensation that achieves high slew rates and low noise even at unity gain. The Analog Devices, Inc. proprietary next-generation XFCB process and innovative circuit design enable such high performance amplifiers. The ADA4899-1 drives 100 Ω loads at breakthrough performance levels with only 15 mA of supply current. With the wide supply voltage range (4.5 V to 12 V), low offset voltage (230 μV maxi- mum), wide bandwidth (600 MHz), and slew rate (310 V/μs), the ADA4899-1 is designed to work in the most demanding applications. The ADA4899-1 also features an input bias current cancellation mode that reduces input bias current by a factor of 60. The ADA4899-1 is available in a 3 mm × 3 mm LFCSP and an 8-lead SOIC package. Both packages feature an exposed metal paddle that improves heat transfer to the ground plane, which is a significant improvement over traditional plastic packages. The ADA4899-1 is rated to work over the extended industrial temperature range, −40°C to +125°C. 100 10 1 0.1 –130 –120 –110 –100 –90 –80 –70 –60 –50 –40 G = +1 VS = ±5V RL = 1kΩ VOUT = 2V p-p FREQUENCY (MHz) HD3 HD2 Figure 3. Harmonic Distortion vs. Frequency |
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