Low Noise, Precision 16 V CMOS, Rail-to-Rail Operational Amplifiers AD8661/AD8662/AD8664 FEATURES PIN CONFIGURATIONS Low offset voltage: 100 V maximum VS = 5 V NC 1 8 NC Low input bias current: 1 pA maximum NC 1 8NC AD8661 AD8661 IN 2 7 V+ TOP VIEW IN 2 7V+ Single-supply operation: 5 V to 16 V +IN 3 6 OUT (Not to Scale) +IN 3 6OUT V 4 5 NC Low noise: 10 nV/Hz V 4 5NC Wide bandwidth: 4 MHz NC = NO CONNECT Unity-gain stable NC = NO CONNECT Small package options Figure 1. AD8661, 8-Lead SOIC N Figure 2. AD8661, 8-Lead LFCSP VD (R-8) (CP-8-2) 3 mm 3 mm 8-lead LFCSP 8-lead MSOP and narrow SOIC OUT A 1 8 V+ OUT A 1 8 V+ 14-lead TSSOP and narrow SOIC AD8662 AD8662 IN A 2 7 OUT B IN A 2 7 OUT B TOP VIEW TOP VIEW +IN A 3 6 IN B +IN A 3 6 IN B (Not to Scale) (Not to Scale) APPLICATIONS V 4 5 +IN B V 4 5 +IN B Sensors Figure 3. AD8662, 8-Lead SOIC N Figure 4. AD8662, 8-Lead MSOP Medical equipment (R-8) (RM-8) Consumer audio Photodiode amplification OUT A 1 14 OUT D OUT A 1 14 OUT D IN A 2 13 IN D IN A 2 13 IN D ADC drivers AD8664 AD8664 +IN A 3 12 +IN D +IN D TOP VIEW +IN A 3 12 TOP VIEW (Not to Scale) (Not to Scale) V+ 4 11 V V+ 4 11 V +IN B 5 10 +IN B 5 10 +IN C +IN C IN B 6 9 IN C IN B 6 9 IN C OUT B 7 8 OUT C OUT B 7 8 OUT C Figure 5. AD8664, 14-Lead SOIC N Figure 6. AD8664, 14-Lead TSSOP (R-14) (RU-14) GENERAL DESCRIPTION monitoring equipment can take advantage of the high input The AD8661/AD8662/AD8664 are rail-to-rail output, single- impedance, low voltage and current noise, and wide bandwidth. supply amplifiers that use the Analog Devices, Inc., patented DigiTrim trimming technique to achieve low offset voltage. The single AD8661 is available in a narrow 8-lead SOIC The AD866x series features extended operating ranges, with package and a very thin, dual lead, 8-lead LFCSP. The AD8661 supply voltages up to 16 V. It also features low input bias SOIC N package is specified over the extended industrial current, wide signal bandwidth, and low input voltage and temperature range of 40C to +125C. The AD8661 current noise. LFCSP VD is specified over the industrial temperature range of 40C to +85C. The AD8662 is available in a narrow 8-lead The combination of low offset, very low input bias current, and SOIC package and an 8-lead MSOP, both specified over the a wide supply range makes these amplifiers useful in a wide extended industrial temperature range of 40C to +125C. The variety of applications usually associated with higher priced AD8664 is available in a narrow 14-lead SOIC package and a JFET amplifiers. Systems using high impedance sensors, such as 14-lead TSSOP, both with an extended industrial temperature photodiodes, benefit from the combination of low input bias range of 40C to +125C. current, low noise, low offset, and wide bandwidth. The wide operating voltage range meets the demands of high performance ADCs and DACs. Audio applications and medical Rev. D 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. Fax: 781.461.3113 2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. 05200-002 05200-036 05200-001 05200-035 05200-037 05200-004AD8661/AD8662/AD8664 TABLE OF CONTENTS Features .............................................................................................. 1 AD8661 Electrical CharacteristicsLFCSP VD Only............5 Applications....................................................................................... 1 AD8661 Electrical CharacteristicsLFCSP VD Only............6 Pin Configurations ........................................................................... 1 Absolute Maximum Ratings ............................................................7 General Description ......................................................................... 1 Thermal Resistance.......................................................................7 Revision History ............................................................................... 2 ESD Caution...................................................................................7 Specifications..................................................................................... 3 Typical Performance Characteristics ..............................................8 AD8661/AD8662/AD8664 Electrical Characteristics Outline Dimensions....................................................................... 13 SOIC N, MSOP, and TSSOP ...................................................... 3 Ordering Guide .......................................................................... 15 AD8661/AD8662/AD8664 Electrical Characteristics SOIC N, MSOP, and TSSOP ...................................................... 4 REVISION HISTORY 7/06Rev. C to Rev. D Changes to Table 1.............................................................................3 Added AD8664 ...................................................................Universal Changes to Table 2.............................................................................4 Added 14-Lead SOIC N and 14-Lead TSSOP ...............Universal Changes to Table 3.............................................................................5 Changes to Features.......................................................................... 1 Changes to Table 4.............................................................................6 Changes to Table 1............................................................................ 3 Changes to Table 5.............................................................................7 Changes to Table 2............................................................................ 4 Updated Outline Dimensions....................................................... 13 Changes to Table 3............................................................................ 5 Changes to Ordering Guide .......................................................... 13 Changes to Table 4............................................................................ 6 1/06Rev. 0 to Rev. A Changes to Table 5 and Table 6....................................................... 7 Added LFCSP VD .............................................................Universal Changes to Figure 29...................................................................... 11 Changes to Table 1.............................................................................3 Updated Outline Dimensions ....................................................... 13 Changes to Table 2.............................................................................4 Changes to Ordering Guide .......................................................... 15 Changes to Ordering Guide .......................................................... 13 5/06Rev. B to Rev. C 9/05Revision 0: Initial Version Changes to Ordering Guide .......................................................... 13 3/06Rev. A to Rev. B Added AD8662 ...................................................................Universal Added MSOP ......................................................................Universal Rev. D Page 2 of 16