36 V Precision, 2.8 nV/Hz Rail-to-Rail Output Op Amp Data Sheet AD8675 FEATURES PIN CONFIGURATIONS Very low voltage noise: 2.8 nV/Hz NULL 1 8 NULL Rail-to-rail output swing AD8675 IN 2 7 V+ Low input bias current: 2 nA maximum +IN 3 6 OUT TOP VIEW (Not to Scale) Very low offset voltage: 75 V maximum V 4 5 NC Low input offset drift: 0.6 V/C maximum NC = NO CONNECT Very high gain: 120 dB Figure 1. 8-Lead SOIC N (R-8) Wide bandwidth: 10 MHz typical 5 V to 18 V operation NULL 1 8 NULL AD8675 APPLICATIONS IN 2 7 V+ TOP VIEW +IN 3 6 OUT Precision instrumentation (Not to Scale) V 4 5 NC PLL filters Laser diode control loops NC = NO CONNECT Strain gage amplifiers Figure 2. 8-Lead MSOP (RM-8) Medical instrumentation Thermocouple amplifiers GENERAL DESCRIPTION The AD8675 precision operational amplifier has ultralow offset, take advantage of the low noise, dc precision, and rail-to-rail drift, and voltage noise combined with very low input bias currents output swing provided by the AD8675 to maximize SNR and over the full operating temperature range. The AD8675 is a dynamic range. precision, wide bandwidth op amp featuring rail-to-rail output The smaller packages and low power consumption afforded by swings and very low noise. Operation is fully specified from the AD8675 allow maximum channel density or minimum 5 V to 15 V. board size for space-critical equipment. The AD8675 features a rail-to-rail output like that of the OP184, The AD8675 is specified for the extended industrial temperature but with wide bandwidth and even lower voltage noise, combined range (40C to +125C). The AD8675 amplifier is available in with the precision and low power consumption like that of the the tiny 8-lead MSOP, and the popular 8-lead, narrow SOIC, industry-standard OP07 amplifier. Unlike other low noise, rail- RoHS compliant packages. MSOP packaged devices are only to-rail op amps, the AD8675 has very low input bias current available in tape and reel format. and low input current noise. For the dual version of this ultraprecision, rail-to-rail op amp, With typical offset voltage of only 10 V, offset drift of 0.2 V/C, see the AD8676 data sheet. and noise of only 0.10 V p-p (0.1 Hz to 10 Hz), the AD8675 is The AD8675 and AD8676 are members of a growing series of perfectly suited for applications where large error sources cannot low noise op amps offered by Analog Devices, Inc. be tolerated. For applications with even lower offset tolerances, the proprietary nulling capability allows a combination of both Table 1. Voltage Noise device and system offset errors up to 3.5 mV (referred to the Package 0.9 nV 1.1 nV 1.8 nV 2.8 nV 3.8 nV input) to be compensated externally. Unlike previous circuits, Single AD797 AD8597 ADA4004-1 AD8675 AD8671 the AD8675 accommodates this adjustment without adversely Dual AD8599 ADA4004-2 AD8676 AD8672 affecting the offset drift, CMRR, and PSRR of the amplifier. Quad ADA4004-4 AD8674 Precision instrumentation, PLL, and other precision filter circuits, position and pressure sensors, medical instrumentation, and strain gage amplifiers benefit greatly from the very low noise, low input bias current, and wide bandwidth. Many systems can Rev. E 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 20052012 Analog Devices, Inc. All rights reserved. 05564-001 05564-002AD8675 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Thermal Resistance .......................................................................5 Applications ....................................................................................... 1 Power Sequencing .........................................................................5 Pin Configurations ........................................................................... 1 ESD Caution...................................................................................5 General Description ......................................................................... 1 Typical Performance Characteristics ..............................................6 Revision History ............................................................................... 2 Test Circuit ...................................................................................... 11 Specifications ..................................................................................... 3 Outline Dimensions ....................................................................... 12 Electrical Specifications ............................................................... 3 Ordering Guide .......................................................................... 12 Absolute Maximum Ratings ............................................................ 5 REVISION HISTORY 7/12Rev. D to Rev. E Added Power Sequencing Section .................................................. 5 Added Figure 28 and Figure 29 Renumbered Sequentially ..... 10 8/11Rev. C to Rev. D Added Input Capacitance, Common Mode Parameter and Input Capacitance, Differential Mode Parameter, Table 3 ..................... 4 6/10Rev. B to Rev. C Changes to Figure 10 ........................................................................ 7 5/10Rev. A to Rev. B Changes to General Description Section ...................................... 1 Added Table 1 Renumbered Sequentially .................................... 1 Changes to Table 2 ............................................................................ 3 Changes to Table 3 ............................................................................ 4 Changes to Table 4 and Table 5 ....................................................... 5 Changes to Figure 4 and Figure 6 to Figure 8 ............................... 6 Changes to Figure 15 ........................................................................ 8 Changes to Figure 21 and Figure 24 ............................................... 9 Added Figure 27 Renumbered Sequentially .............................. 10 Updated Outline Dimensions ....................................................... 12 Changes to Ordering Guide .......................................................... 12 4/07Rev. 0 to Rev. A Added Figure 7 and Figure 8 Renumbered Sequentially ........... 6 10/05Revision 0: Initial Version Rev. E Page 2 of 12