Datasheet AD8675 (Analog Devices)

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 –IN 2 AD8675 7 V+ Low input bias current: 2 nA maximum +IN 3 6 TOP VIEW OUT Very low offset voltage: 75 µV maximum (Not to Scale) V– 4 5 NC Low input offset drift: 0.6 µV/°C maximum
001
Very high gain: 120 dB NC = NO CONNECT
05564-
Wide bandwidth: 10 MHz typical
Figure 1. 8-Lead SOIC_N (R-8)
±5 V to ±18 V operation NULL 1 8 NULL APPLICATIONS –IN AD8675 2 7 V+ TOP VIEW Precision instrumentation +IN 3 6 OUT (Not to Scale) PLL filters V– 4 5 NC
002
Laser diode control loops NC = NO CONNECT
05564-
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 ful 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 (−40°C to +125°C). 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 µV, offset drift of 0.2 µV/°C, see the AD8676 data sheet. and noise of only 0.10 μV p-p (0.1 Hz to 10 Hz), the AD8675 is perfectly suited for applications where large error sources cannot The AD8675 and AD8676 are members of a growing series of be tolerated. For applications with even lower offset tolerances, low noise op amps offered by Analog Devices, Inc. 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 rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©2005–2012 Analog Devices, Inc. All rights reserved.
Document Outline Features Applications General Description Pin Configurations Table of Contents Revision History Specifications Electrical Specifications Absolute Maximum Ratings Thermal Resistance Power Sequencing ESD Caution Typical Performance Characteristics Test Circuit Outline Dimensions Ordering Guide