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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. A 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 ©2006 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 A-to-D 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. ADI’s 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 maximum), 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, which reduces input bias current by a factor of 60. The ADA4899-1 is available in a 3 mm × 3 mm LFCSP and a 8-lead SOIC package. Both packages feature an exposed metal paddle that improves heat transfer to the ground plane. This 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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