AD8605ARTZ

Precision Low Noise CMOS Rail-to-Rail Input/Output Operational Amplifiers AD8605/AD8606/AD8608 FEATURES APPLICATIONS Low offset voltage: 65 µV maximum Low input bias currents: 1 pA maximum Low noise: 8 nV/√Hz Wide bandwidth: 10 MHz High open-loop gain: 120 dB Unity gain stable Single-supply operation: 2.7 V to 5.5 V MicroCSP™ Photodiode amplification Battery-powered instrumentation Multipole filters Sensors Barcode scanners Audio FUNCTIONAL BLOCK DIAGRAMS 1 TOP VIEW (BUMP SIDE DOWN) OUT V+ 1 5 –IN A 12 +IN D AD8608 11 V– –IN 10 +IN C 4 –IN B 6 9 –IN C OUT B 5 V+ OUT B –IN B +IN B 8 OUT C 7 Figure 4. 14-Lead SOIC (R Suffix) 02731-D-003 8 AD8606 4 13 –IN D +IN B 5 Figure 3. 5-Bump MicroCSP (CB Suffix) 1 14 OUT D 2 V+ 4 AD8605 ONLY OUT A –IN A +IN A V– Figure 2. 8-Lead SOIC (R Suffix) +IN A 3 2 3 5 +IN B OUT A 1 V– +IN 6 –IN B V– 4 02731-D-004 02731-D-001 Figure 1. 5-Lead SOT-23 (RT Suffix) 7 OUT B AD8608 +IN A 3 02731-D-005 –IN A 2 4 –IN +IN 3 8 V+ OUT A 1 AD8605 V– 2 The combination of low offsets, low noise, very low input bias currents, and high speed makes these amplifiers useful in a wide variety of applications. Filters, integrators, photodiode amplifiers, and high impedance sensors all benefit from the combination of performance features. Audio and other ac applications benefit from the wide bandwidth and low distortion. Applications for these amplifiers include optical control loops, portable and loop-powered instrumentation, and audio amplification for portable devices. The AD8605, AD8606, and AD8608 are specified over the extended industrial temperature range (−40°C to +125°C). The AD8605 single is available in the 5-lead SOT-23 and 5-bump MicroCSP packages. The 5-bump MicroCSP offers the smallest available footprint for any surface-mount operational amplifier. The AD8606 dual is available in an 8-lead MSOP package and a narrow SOIC surface-mount package. The AD8608 quad is available in a 14-lead TSSOP and a narrow 14-lead SOIC package. MicroCSP, SOT, MSOP, and TSSOP versions are available in tape and reel only. 5 V+ OUT 1 02731-D-006 The AD8605, AD8606, and AD86081 are single, dual, and quad rail-to-rail input and output, single-supply amplifiers. They feature very low offset voltage, low input voltage and current noise, and wide signal bandwidth. They use Analog Devices’ patented DigiTrim® trimming technique, which achieves superior precision without laser trimming. Figure 5. 8-Lead MSOP (RM Suffix) OUT A –IN A +IN A V+ +IN B –IN B OUT B 1 14 AD8608 7 8 OUT D –IN D +IN D V– +IN C –IN C OUT C 02731-D-002 GENERAL DESCRIPTION Figure 6. 14-Lead TSSOP (RU Suffix) Protected by U.S. Patent No. 5,969,657; other patents pending. 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 rights of third parties that may result from its use. Specifications subject to change without notice. No 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.326.8703 © 2004 Analog Devices, Inc. All rights reserved. AD8605/AD8606/AD8608 TABLE OF CONTENTS 5 V Electrical Specifications ............................................................ 3 Channel Separation.................................................................... 14 2.7 V Electrical Specifications ......................................................... 5 Capacitive Load Drive ............................................................... 14 Absolute Maximum Ratings............................................................ 6 Light Sensitivity .......................................................................... 15 ESD Caution.................................................................................. 6 MicroCSP Assembly Considerations....................................... 15 Typical Performance Characteristics ............................................. 7 I-V Conversion Applications ........................................................ 16 Application Information................................................................ 13 Photodiode Preamplifier Applications .................................... 16 Output Phase Reversal............................................................... 13 Audio and PDA Applications ................................................... 16 Maximum Power Dissipation ................................................... 13 Instrumentation Amplifiers ...................................................... 17 Input Overvoltage Protection ................................................... 13 D/A Conversion ......................................................................... 17 THD + Noise............................................................................... 13 Outline Dimensions ....................................................................... 18 Total Noise Including Source Resistors ................................... 14 Ordering Guide .......................................................................... 19 REVISION HISTORY 5/04—Data Sheet Changed from Rev. C to Rev. D Updated Format............................................................. Universal Edit to Light Sensitivity Section ............................................... 16 Updated Outline Dimensions ................................................... 19 Changes to Ordering Guide ...................................................... 20 7/03—Data Sheet Changed from Rev. B to Rev. C Changes to Features....................................................................... 1 Change to General Description ................................................... 1 Addition to Functional Block Diagrams .................................... 1 Addition to Absolute Maximum Ratings ................................... 4 Addition to Ordering Guide ........................................................ 4 Change to Equation In Maximum Power Dissipation Section........................................................................................ 11 Added Light Sensitivity Section................................................. 12 Added New Figure 8 and Renumbered Subsequent Figures . 13 Added New MicroCSP Assembly Considerations Section .... 13 Changes to Figure 9..................................................................... 13 Change to Equation in Photodiode Preamplifier Applications Section ................................................................ 13 Changes to Figure 12................................................................... 14 Change to Equation in D/A Conversion Section .................... 14 Updated Outline Dimensions ................................................... 15 3/03—Data Sheet Changed from Rev. A to Rev. B Changes to Functional Block Diagram....................................... 1 Changes to Absolute Maximum Ratings .................................... 4 Changes to Ordering Guide ....................................................... 4 Changes to Figure 9 .................................................................... 13 Updated Outline Dimensions.................................................... 15 11/02—Data Sheet Changed from Rev. 0 to Rev. A Change to Electrical Characteristics ........................................... 2 Changes to Absolute Maximum Ratings .................................... 4 Changes Ordering Guide ............................................................. 4 Change to TPC 6 .......................................................................... 5 Updated Outline Dimensions.................................................... 15 Rev. D | Page 2 of 20 AD8605/AD8606/AD8608 5 V ELECTRICAL SPECIFICATIONS Table 1. @ VS = 5 V, VCM = VS/2, TA = 25°C, unless otherwise noted. Parameter INPUT CHARACTERISTICS Offset Voltage AD8605/AD8606 AD8608 Input Bias Current AD8605/AD8606 AD8605/AD8606 AD8608 AD8608 Input Offset Current Symbol Conditions Min Typ Max Unit 20 20 80 65 75 300 750 1 50 250 100 300 0.5 20 75 5 µV µV µV µV pA pA pA pA pA pA pA pA V dB dB V/mV 4.5 6.0 µV/°C µV/°C VOS VS = 3.5 V, VCM = 3 V VS = 3.5 V, VCM = 2.7 V VS = 5 V, VCM = 0 V to 5 V −40°C < TA < +125°C IB 0.2 −40°C < TA < +85°C −40°C < TA < +125°C −40°C < TA < +85°C −40°C < TA < +125°C IOS 0.1 −40°C < TA < +85°C −40°C < TA < +125°C Input Voltage Range Common-Mode Rejection Ratio CMRR Large Signal Voltage Gain AVO Offset Voltage Drift AD8605/AD8606 AD8608 INPUT CAPACITANCE Common-Mode Input Capacitance Differential Input Capacitance OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Output Current Closed-Loop Output Impedance POWER SUPPLY Power Supply Rejection Ratio AD8605/AD8606 AD8608 Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time Full Power Bandwidth Gain Bandwidth Product Phase Margin VCM = 0 V to 5 V −40°C < TA < +125°C VO = 0.5 V to 4.5 V RL = 2 kΩ, VCM = 0 V 0 85 75 300 ∆VOS/∆T ∆VOS/∆T VOH VOL IOUT ZOUT 100 90 1,000 1 1.5 IL = 1 mA IL = 10 mA −40°C < TA < +125°C IL = 1 mA IL= 10 mA −40°C < TA < +125°C 4.96 4.7 4.6 8.8 2.59 pF pF 4.98 4.79 V V V mV mV mV mA Ω 20 170 40 210 290 ±80 10 f = 1 MHz, AV = 1 PSRR ISY SR tS BWP GBP VS = 2.7 V to 5.5 V VS = 2.7 V to 5.5 V −40°C < TA < +125°C VO = 0 V −40°C < TA < +125°C RL = 2 kΩ To 0.01%, 0 V to 2 V step < 1% distortion 80 77 70 95 92 90 1 1.2 1.4 5