AD8603/AD8607/AD8609 Precision Micropower, Low Noise …

1 Precision Micropower, Low Noise CMOS, Rail-to-Rail Input/Output Operational Amplifiers AD8603/AD8607/AD8609 . FEATURES PIN CONFIGURATIONS. Low offset voltage: 50 V maximum OUT 1 5 V+. Low input bias current: 1 pA maximum AD8603. V 2 TOP VIEW. Single-supply operation: V to 5 V (Not to Scale). 04356-001. Low Noise : 22 nV/ Hz +IN 3 4 IN. Micropower: 50 A maximum Figure 1. 5-Lead TSOT (UJ Suffix). Low distortion No phase reversal Unity gain stable OUT A 1 8 V+. IN A 2 AD8607 7 OUT B. TOP VIEW. +IN A 3 6 IN B. (Not to Scale). 04356-002. APPLICATIONS V 4 5 +IN B. Battery-powered instrumentation Figure 2. 8-Lead MSOP (RM Suffix). Multipole filters Sensors OUT A 1 8 V+. Low power ASIC input or output amplifiers IN A 2 AD8607 7 OUT B.

2 +IN A 3 TOP VIEW 6 IN B. 04356-003. V 4 (Not to Scale) 5 +IN B. GENERAL DESCRIPTION. The AD8603/AD8607/AD8609 are single/dual/quad micro- Figure 3. 8-Lead SOIC (R Suffix). power rail-to-rail input and output amplifiers, respectively, that feature very low offset voltage as well as low input voltage and OUT A 1 14 OUT D. current Noise . IN A 2 13 IN D. These amplifiers use a patented trimming technique that achieves +IN A 3 AD8609 12 +IN D. TOP VIEW. V+ 4 11 V . superior Precision without laser trimming. The parts are fully (Not to Scale). +IN B 5 10 +IN C. specified to operate from V to V single supply or from IN B 6 9 IN C. V to V dual supply. The combination of low offsets, low 04356-004. OUT B 7 8 OUT C.

3 Noise , very low input bias currents, and low power consumption makes the AD8603/AD8607/AD8609 especially useful in portable Figure 4. 14-Lead TSSOP (RU Suffix). and loop-powered instrumentation. The ability to swing rail to rail at both the input and output OUT A 1 14 OUT D. enables designers to buffer CMOS ADCs, DACs, ASICs, and IN A 2 13 IN D. other wide output swing devices in low power, single-supply +IN A 3 AD8609 12 +IN D. systems. V+ 4 TOP VIEW 11 V . (Not to Scale). +IN B 5 10 +IN C. The AD8603 is available in a tiny 5-lead TSOT package. The IN B 6 9 IN C. 04356-005. AD8607 is available in 8-lead MSOP and 8-lead SOIC packages. OUT B 7 8 OUT C. The AD8609 is available in 14-lead TSSOP and 14-lead SOIC.

4 Packages. Figure 5. 14-Lead SOIC (R Suffix). Rev. C. 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, Box 9106, Norwood, MA 02062-9106, license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: Trademarks and registered trademarks are the property of their respective owners. Fax: 2003 2008 Analog Devices, Inc. All rights reserved. AD8603/AD8607/AD8609 . TABLE OF CONTENTS. Features .. 1 12 Applications.

5 1 No Phase Reversal .. 12 General Description .. 1 Input Overvoltage Protection .. 12 Pin Configurations .. 1 Driving Capacitive Loads .. 12 Revision History .. 2 Proximity 13 3 Composite 13 Electrical Characteristics .. 3 Battery-Powered Applications .. 13 Absolute Maximum 5 Photodiodes .. 13 ESD Caution .. 5 Outline Dimensions .. 14 Typical Performance Characteristics .. 6 Ordering Guide .. 16 REVISION HISTORY. 6/08 Rev. B to Rev. C. Changes to Table 1 .. 3. Changes to Table 2 .. 4. Changes to Figure 15 .. 7. Changes to Figure 33 .. 10. Changes to Figure 45 and Figure 47 .. 13. Updated Outline Dimensions .. 14. Changes to Ordering Guide .. 16. 6/05 Rev. A to Rev. B. Updated Figure 49 .. 15. Changes to Ordering Guide.

6 17. 10/03 Rev. 0 to Rev. A. Added AD8607 and AD8609 Parts .. Universal Changes to Specifications .. 3. Changes to Figure 35 .. 10. Added Figure 11. 8/03 Revision 0: Initial Version Rev. C | Page 2 of 16. AD8603/AD8607/AD8609 . SPECIFICATIONS. ELECTRICAL CHARACTERISTICS. VS = 5 V, VCM = VS/2, TA = 25 C, unless otherwise noted. Table 1. Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS. Offset Voltage VOS VS = V @ VCM = V and V 12 50 V. V < VCM < + V 40 300 V. 40 C < TA < +125 C, V < VCM < + V 700 V. Offset Voltage Drift VOS/ T 40 C < TA < +125 C 1 V/ C. Input Bias Current IB 1 pA. 40 C < TA < +85 C 50 pA. 40 C < TA < +125 C 500 pA. Input Offset Current IOS pA. 40 C < TA < +85 C 50 pA. 40 C < TA < +125 C 250 pA.

7 Input Voltage Range IVR + V. Common-Mode Rejection Ratio CMRR 0 V < VCM < 5 V 85 100 dB. 40 C < TA < +125 C 80 dB. Large Signal Voltage Gain AVO RL = 10 k , V < VO < V. AD8603 400 1000 V/mV. AD8607/AD8609 250 450 V/mV. Input Capacitance CDIFF pF. CCM pF. OUTPUT CHARACTERISTICS. Output Voltage High VOH IL = 1 mA V. 40 C to +125 C V. IL = 10 mA V. 40 C to +125 C V. Output Voltage Low VOL IL = 1 mA 16 30 mV. 40 C to +125 C 50 mV. IL = 10 mA 160 250 mV. 40 C to +125 C 330 mV. Short-Circuit Current ISC 70 mA. Closed-Loop Output Impedance ZOUT f = 10 kHz, AV = 1 36 . POWER SUPPLY. Power Supply Rejection Ratio PSRR V < VS < 5 V 80 100 dB. Supply Current per Amplifier ISY VO = 0 V 40 50 A. 40 C <TA < +125 C 60 A.

8 DYNAMIC PERFORMANCE. Slew Rate SR RL = 10 k V/ s Settling Time tS G = 1, 2 V step 23 s Gain Bandwidth Product GBP RL = 100 k 400 kHz RL = 10 k 316 kHz Phase Margin O RL = 10 k , RL = 100 k 70 Degrees Noise PERFORMANCE. Peak-to-Peak Noise en p-p Hz to 10 Hz V. Voltage Noise Density en f = 1 kHz 25 nV/ Hz f = 10 kHz 22 nV/ Hz Current Noise Density in f = 1 kHz pA/ Hz Channel Separation CS f = 10 kHz 115 dB. f = 100 kHz 110 dB. Rev. C | Page 3 of 16. AD8603/AD8607/AD8609 . VS = V, VCM = VS/2, TA = 25 C, unless otherwise noted. Table 2. Parameter Symbol Conditions Min Typ Max Unit INPUT CHARACTERISTICS. Offset Voltage VOS VS = V @ VCM = V and V 12 50 V. V < VCM < + V 40 300 V. 40 C < TA < +85 C, V < VCM < + V 500 V.

9 40 C < TA < +125 C, V < VCM < + V 700 V. Offset Voltage Drift VOS/ T 40 C < TA < +125 C 1 V/ C. Input Bias Current IB 1 pA. 40 C < TA < +85 C 50 pA. 40 C < TA < +125 C 500 pA. Input Offset Current IOS pA. 40 C < TA < +85 C 50 pA. 40 C < TA < +125 C 250 pA. Input Voltage Range IVR + V. Common-Mode Rejection Ratio CMRR 0 V < VCM < V 80 98 dB. 40 C < TA < +85 C 70 dB. Large Signal Voltage Gain AVO RL = 10 k , V < VO < V. AD8603 150 3000 V/mV. AD8607/AD8609 100 2000 V/mV. Input Capacitance CDIFF pF. CCM pF. OUTPUT CHARACTERISTICS. Output Voltage High VOH IL = 1 mA V. 40 C to +125 C V. Output Voltage Low VOL IL = 1 mA 38 60 mV. 40 C to +125 C 80 mV. Short-Circuit Current ISC 10 mA. Closed-Loop Output Impedance ZOUT f = 10 kHz, AV = 1 36.

10 POWER SUPPLY. Power Supply Rejection Ratio PSRR V < VS < 5 V 80 100 dB. Supply Current per Amplifier ISY VO = 0 V 40 50 A. 40 C < TA < +85 C 60 A. DYNAMIC PERFORMANCE. Slew Rate SR RL = 10 k V/ s Settling Time tS G = 1, 1 V step s Gain Bandwidth Product GBP RL = 100 k 385 kHz RL = 10 k 316 kHz Phase Margin O RL = 10 k , RL = 100 k 70 Degrees Noise PERFORMANCE. Peak-to-Peak Noise en p-p Hz to 10 Hz V. Voltage Noise Density en f = 1 kHz 25 nV/ Hz f = 10 kHz 22 nV/ Hz Current Noise Density in f = 1 kHz pA/ Hz Channel Separation CS f = 10 kHz 115 dB. f = 100 kHz 110 dB. Rev. C | Page 4 of 16. AD8603/AD8607/AD8609 . ABSOLUTE MAXIMUM RATINGS. Absolute maximum ratings apply at 25 C, unless otherwise noted. Table 4.