Low Power, 3.6 MHz, Low Noise, Rail-to- Rail Output, Operational Amplifiers Data Sheet ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4 The ADA4691/ADA4692 family is fully specified over the FEATURES extended industrial temperature range (40C to +125C). Low power: 180 A typical The ADA4691-2 is available in a 10-lead LFCSP and a 9-ball Very low input bias currents: 0.5 pA typical WLCSP. The ADA4692-2 is available in an 8-lead SOIC and 8-lead Low noise: 16 nV/Hz typical LFCSP. The ADA4691-4 is available in a 16-lead LFCSP. The 3.6 MHz bandwidth ADA4692-4 is available in a 14-lead TSSOP. For pin configurations, Offset voltage: 500 V typical see the Pin Configurations section. Low offset voltage drift: 4 V/C maximum Low distortion: 0.003% THD + N 2.7 V to 5 V single supply or 1.35 V to 2.5 V dual supply 1 ADA4692-2 Available in very small 2 mm 2 mm LFCSP packages V = 2.5V SY A = 1 V T = 25C APPLICATIONS A Photodiode amplifiers 0.1 Sensor amplifiers Portable medical and instrumentation R = 600 L Portable audio: MP3s, PDAs, and smartphones Communications R = 2k L 0.01 Low-side current sense ADC drivers Active filters Sample-and-hold 0.001 10 100 1k 10k 20k GENERAL DESCRIPTION FREQUENCY (Hz) The ADA4691-2/ADA4692-2 are dual and the ADA4691-4/ Figure 1. THD + Noise vs. Frequency ADA4692-4 are the quad rail-to-rail output, single-supply 80 amplifiers featuring low power, wide bandwidth, and low noise. ADA4692-2 V = 2.5V SY The ADA4691-2 has two independent shutdown pins, allowing V = 2.8V p-p IN 90 A = +1 further reduction in supply current. The ADA4691-4 is a quad V T = 25C A with dual shutdown pins each controlling a pair of amplifiers 100 and is available in the 16-lead LFCSP. The ADA4692-4 is a quad version without shutdown. 110 These amplifiers are ideal for a wide variety of applications. Audio, filters, photodiode amplifiers, and charge amplifiers, all 120 benefit from this combination of performance and features. Additional applications for these amplifiers include portable 130 consumer audio players with low noise and low distortion that provide high gain and slew rate response over the audio band at 140 100 1k 10k 100k low power. Industrial applications with high impedance sensors, FREQUENCY (Hz) such as pyroelectric and IR sensors, benefit from the high Figure 2. Channel Separation vs. Frequency impedance and low 0.5 pA input bias, low offset drift, and enough bandwidth and response for low gain applications. Table 1. Micropower Low Power Low Power with Shutdown Standard Op Amp With Shutdown High Bandwidth Single AD8613 AD8591 AD8691 Dual AD8617 ADA4692-2 ADA4691-2 AD8592 AD8692 Quad AD8619 ADA4692-4 ADA4691-4 AD8694 Rev. E Document Feedback 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 20092019 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. CHANNEL SEPARATION (dB) THD + N (%) 07950-14 1 07 95 0-14 2ADA4691-2/ADA4691-4/ADA4692-2/ADA4692-4 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 ESD Caution...................................................................................6 Applications ....................................................................................... 1 Pin Configurations ............................................................................7 General Description ......................................................................... 1 Typical Performance Characteristics ..............................................8 Revision History ............................................................................... 2 Shutdown Operation ...................................................................... 16 Specif icat ions ..................................................................................... 3 Input Pin Characteristics ........................................................... 16 Electrical Characteristics2.7 V Operation ............................ 3 Input Threshold .......................................................................... 16 Electrical Characteristics5 V Operation................................ 4 Outline Dimensions ....................................................................... 17 Absolute Maximum Ratings ............................................................ 6 Ordering Guide .......................................................................... 19 Thermal Resistance ...................................................................... 6 REVISION HISTORY 12/2019Rev. D to Rev. E 9/2009Rev. A to Rev. B Changes to Table 1 ............................................................................ 1 Added ADA4691-2, 9-Ball WLCSP ADA4692-2, 8-Lead Changes to Table 2 ............................................................................ 3 LFCSP and ADA4692-4, 14-Lead TSSOP ................. Throughout Changes to Table 3 ............................................................................ 5 Changes to General Description ..................................................... 1 Updated Outline Dimensions ....................................................... 17 Updated Outline Dimensions ....................................................... 16 Changes to Ordering Guide .......................................................... 19 Changes to Ordering Guide .......................................................... 17 11/2010Rev. C to Rev. D 6/2009Rev. 0 to Rev. A Changed 5 V to 6 V in Endnote 2, Table 4 .................................... 6 Added ADA4691-2, 10 Lead LFCSP ........................... Throughout Changes to Table 1 ............................................................................. 3 12/2009Rev. B to Rev. C Changes to Table 2 ............................................................................. 4 Added ADA4691-4, 16-Lead LFCSP .......................... Throughout Changes to Captions for Figure 40, Figure 41, Figure 43, and Added Figure 1, Figure 2, and Table 1 Renumbered Figure 44 .......................................................................................... 13 Sequentially ....................................................................................... 1 Added Shutdown Operations Section ......................................... 15 Changes to Applications Section and General Description Updated Outline Dimensions ....................................................... 16 Section ................................................................................................ 1 Changes to Ordering Guide .......................................................... 16 Changes to Table 1 ............................................................................ 3 Changes to Table 2 ............................................................................ 4 3/2009Revision 0: Initial Version Changes to Table 4 ............................................................................ 6 Updated Outline Dimensions ....................................................... 17 Changes to Ordering Guide .......................................................... 20 Rev. E Page 2 of 19