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AD7985 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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AD7985 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 28 page 1 nV/√Hz, Low Power, Rail-to-Rail Output Amplifiers ADA4896-2/ADA4897-1 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother 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 ©2011 Analog Devices, Inc. All rights reserved. FEATURES Low wideband noise 1 nV/√Hz 2.8 pA/√Hz Low 1/f noise 2.4 nV/√Hz @ 10 Hz Low distortion: −115 dBc @ 100 kHz, VOUT = 2 V p-p Low power: 3 mA/amp Low input offset voltage: 0.5 mV maximum High speed 230 MHz, −3 dB bandwidth (G = +1) 120 V/μs slew rate 45 ns settling time to 0.1% Rail-to-rail output Wide supply range: 3 V to 10 V Disable feature (ADA4897-1) APPLICATIONS Low noise preamplifier Ultrasound amplifiers PLL loop filters High performance ADC drivers DAC buffers GENERAL DESCRIPTION The ADA4896-2/ADA4897-1 are unity gain stable, low noise, rail-to-rail output, high speed voltage feedback amplifiers that have a quiescent current of 3 mA. With the 1/f noise of 2.4 nV/√Hz at 10 Hz and a spurious-free dynamic range of −80 dBc at 2 MHz, the ADA4896-2/ADA4897-1 are an ideal solution in a variety of applications, including ultrasound, low noise preamplifiers, and drivers of high performance ADCs. The Analog Devices, Inc., proprietary next generation SiGe bipolar process and innovative architecture enable such high performance amplifiers. TheADA4896-2/ADA4897-1 have 230 MHz bandwidth, 120 V/μs slew rate, and settle to 0.1% in 45 ns. With a wide supply voltage range (3 V to 10 V), the ADA4896-2/ADA4897-1 are ideal candidates for systems that require high dynamic range, precision, and high speed. The ADA4896-2 is available in 8-lead LFCSP and 8-lead MSOP packages. The ADA4897-1 is available in 8-lead SOIC and 6-lead SOT-23 packages. Both the ADA4896-2 and ADA4897-1 work over the extended industrial temperature range of −40°C to +125°C. FUNCTIONAL BLOCK DIAGRAM NC 1 –IN 2 +IN 3 –VS 4 8 +VS 7 OUT 6 NC 5 DISABLE Figure 1. 8-Lead SOIC (ADA4897-1) 0 1 2 3 4 5 6 7 8 FREQUENCY (Hz) 1 10 100 1k 10k 100k 1M 5M VS = ±5V Figure 2. Voltage Noise vs. Frequency Table 1. Other Low Noise Amplifiers Part Number VN (nV/√Hz) @ 1 kHz VN (nV/√Hz) @ 100 kHz BW (MHz) Supply Voltage (V) AD797 0.9 0.9 8 10 to 30 AD8021 5 2.1 490 5 to 24 AD8099 7 0.95 510 5 to 12 AD8045 6 3 1000 3.3 to 12 ADA4899-1 1.4 1 600 5 to 12 ADA4898-1/ ADA4898-2 0.9 0.9 65 10 to 32 Table 2. Complementary ADCs Part Number Bits Speed (MSPS) Power (mW) AD7944 14 2.5 15.5 AD7985 16 2.5 15.5 AD7986 18 2 15 |
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