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AD8044 Arkusz danych(PDF) 1 Page - Analog Devices |
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AD8044 Arkusz danych(HTML) 1 Page - Analog Devices |
1 / 24 page 1 nV/√Hz Low Noise 210°C Instrumentation Amplifier Data Sheet AD8229 Rev. B 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 ©2011–2012 Analog Devices, Inc. All rights reserved. FEATURES Designed and guaranteed for 210°C operation Low noise 1 nV/√Hz input noise 45 nV/√Hz output noise High CMRR 126 dB CMRR (minimum), G = 100 80 dB CMRR (minimum) to 5 kHz, G = 1 Excellent ac specifications 15 MHz bandwidth (G = 1) 1.2 MHz bandwidth (G = 100) 22 V/μs slew rate THD: −130 dBc (1 kHz, G = 1) Versatile ±4 V to ±17 V dual supply Gain set with single resistor (G = 1 to 1000) Specified temperature range −40°C to +210°C, SBDIP package −40°C to +175°C, SOIC package APPLICATIONS Down-hole instrumentation Harsh environment data acquisition Exhaust gas measurements Vibration analysis FUNCTIONAL BLOCK DIAGRAM TOP VIEW (Not to Scale) –IN 1 RG 2 RG 3 +IN 4 +VS 8 VOUT 7 REF 6 –VS 5 AD8229 Figure 1. 100 80 60 40 20 0 –20 –40 –60 –80 –100 –55 –35 –15 5 25 45 65 85 105 125 145 165 185 205 225 TEMPERATURE (°C) Figure 2. Typical Input Offset vs. Temperature (G = 100) GENERAL DESCRIPTION The AD8229 is an ultralow noise instrumentation amplifier designed for measuring small signals in the presence of large common-mode voltages and high temperatures. The AD8229 has been designed for high temperature operation. The process is dielectrically isolated to avoid leakage currents at high temperatures. The design architecture was chosen to compensate for the low VBE voltages at high temperatures. The AD8229 excels at measuring tiny signals. It delivers industry leading 1 nV/√Hz input noise performance. The high CMRR of the AD8229 prevents unwanted signals from corrupting the acquisition. The CMRR increases as the gain increases, offering high rejection when it is most needed. The AD8229 is one of the fastest instrumentation amplifiers available. Its current feedback architecture provides high bandwidth at high gain, for example, 1.2 MHz at G = 100. The design includes circuitry to improve settling time after large input voltage transients. The AD8229 was designed for excellent distortion performance, allowing use in demanding applications such as vibration analysis. Gain is set from 1 to 1000 with a single resistor. A reference pin allows the user to offset the output voltage. This feature can be useful when interfacing with analog-to-digital converters. For the most demanding applications, the AD8229 is available in an 8-lead side-brazed ceramic dual in-line package (SBDIP). For space-constrained applications, the AD8229 is available in an 8-lead plastic standard small outline package (SOIC). |
Podobny numer części - AD8044 |
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Podobny opis - AD8044 |
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