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16V Low Cost, High Performance CMOS Rail-to-Rail Operational Amplifiers Preliminary Technical Data AD8661/AD8662/AD8664
FEATURES Low Offset Voltage: 75 V max Low Input Bias Currents 1pA Max Single-Supply Operation: 5 to 16 Volts Dual-Supply Operation: +/- 2.5 to +/-8 Volts Low Noise: 10 nV/Hz Wide Bandwidth: 4 MHz Unity Gain Stable APPLICATIONS Multi-pole Filters Sensors Medical Equipment Consumer Audio Photodiode amplification ADC driver PIN CONFIGURATIONS 8-Lead LFCSP (CP-8) 3mm x 3mm 8-Lead MSOP (RM-8)
AD8662
8-Lead SO (R-8)
14-Lead TSSOP (RU-14)
GENERAL DESCRIPTION The AD8661, AD8662 and AD8664 are single, dual and quad rail-to-rail output single supply amplifiers that use Analog Devices' patented DigiTrim(R) trimming technique to achieve low offset voltage. The AD8661 family features an extended operating range with supply voltages up to 16 V. They also feature low input bias currents, wide signal bandwidth, and low input voltage and current noise. The combination of low offsets, very low input bias currents, and wide supply range make these amplifiers useful in a wide variety of applications normally associated with much higher priced JFET amplifiers. Systems utilizing high impedance sensors, such as photo-diodes benefit from the combination of low input bias current, low noise, low offset and bandwidth. The wide operating voltage range matches today's high performance ADCs and DACs. Audio applications and medical monitoring equipment can take advantage of the high input impedance, low voltage and current noise, wide bandwidth and the lack of "popcorn" noise (found in many other low input bias current amplifiers). The AD8661, AD8662 and AD8664 are specified over the extended industrial (-40 to +125C) temperature range. The AD8661, single, is available in the tiny 8-lead LFCSP (MO220) 3mm x 3mm and 8-lead SOIC package. The AD8662, dual, is available in the 8-lead micro-SOIC and narrow SOIC surface mount packages. The AD8664, quad, is available in 14-lead TSSOP and narrow 14-pin SOIC packages. LFCSP, MSOP and TSSOP versions are available in tape and reel only.
AD8661
AD8664
8-Lead SO
(R-8)
AD8662
14-Lead SO (R-14)
AD8664
REV. PrA 10/5/2004
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. 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 companies.
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 (c) 2004 Analog Devices, Inc. All rights reserved.
Preliminary Technical Data
noted) Parameter INPUT CHARACTERISTICS Offset Voltage Symbol VOS Conditions
AD8661/AD8662/AD8664
(VS=+5.0V, VCM = VS/2, TA=+25C unless otherwise Min Typ Max 75 30 300 650 750 Units V V V V
ELECTRICAL CHARACTERISTICS
VSY = 8V, VCM = 3V VCM = 0.1V to 3.0V -40< TA < +85C -40< TA < +125C
Input Bias Current
IB -40< TA < +85C -40< TA < +125C
0.3
1 50 300 TBD 20 75 3.0
pA pA pA pA pA pA V dB V/mV V/C V V V
Input Offset Current
IOS -40< TA < +85C -40< TA < +125C
0.2
Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High
CMRR AVO VOS/T VOH
VCM = 0.1V to 3.0V RL = 10 k VO= 0.5V to 4.5V
tbd 80 70
95 100 3 10
IL = 1mA IL = 10mA -40C < TA < +125C IL = 1mA IL = 1mA -40C < TA < +125C f=1 MHz, AV = 1 VS = 5 V to 16 V VO = 0V -40< TA < +125C RL =10 k To 0.1%, 0 V to 1V step CL = 15 pF
4.80 4.80 4.75
4.85 4.85
Output Voltage Low
VOL VOL IOUT ZOUT PSRR ISY
60 60 19 65 80 95 1.2
120 120 150
Output Current Closed Loop Output Impedance POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Voltage Noise Density Current Noise Density
mV mV mV mA dB mA mA V/s s MHz
1.8 2.0
SR ts GBP Oo degrees en p-p en en in
3 <1 4 60
f=0.1Hz to 10 Hz f=1kHz f=10kHz f=1kHz
2.5 12 10 0.1
V p-p nV/Hz nV/Hz pA/Hz
-2-
Rev PrA 10/5/04
Preliminary Technical Data
AD8661/AD8662/AD8664
(VS=8.0V, VCM = 0, TA=+25C unless otherwise noted) Min Typ Max 75 30 300 650 750 Units V V V V
ELECTRICAL CHARACTERISTICS
Parameter INPUT CHARACTERISTICS Offset Voltage Symbol VOS Conditions VSY = 8V, VCM = 3V VCM = -8.1V to +6.0V -40< TA < +85C -40< TA < +125C
Input Bias Current
IB -40< TA < +85C -40< TA < +125C
0.3
1 50 300 TBD 20 75 6
pA pA pA pA pA pA V dB V/mV V/C V V V
Input Offset Current
IOS -40< TA < +85C -40< TA < +125C
0.2
Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift OUTPUT CHARACTERISTICS Output Voltage High
CMRR AVO VOS/T VOH
VCM = -8.1V to +6.0V RL=10 k VO= -7.5V to+7.5V
tbd 80 70
95 85 3 10
IL = 1mA IL = 10mA -40C < TA < +125C IL = 1mA IL = 10mA -40C < TA < +125C f=1 MHz, AV = 1 VS = 5V to 16V VO = 0V -40< TA < +125C RL =10 k To 0.1%, 0 V to 1V step CL = 15 pF f=0.1Hz to 10 Hz f=1kHz f=10kHz f=1kHz
7.90 7.6 7.4
7.95 7.7
Output Voltage Low
VOL
-7.97 -7.8 140 45 80 95 1.5
-7.93 -7.7 -7.5
Output Current Closed Loop Output Impedance POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Settling Time Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Peak-to-Peak Noise Voltage Noise Density Voltage Noise Density Current Noise Density
IOUT ZOUT PSRR ISY
mV mV mV mA dB mA mA V/s s MHz degrees V p-p nV/Hz nV/Hz pA/Hz
1.8 2.0
SR ts GBP Oo en p-p en en in
3 <1 4 60 2.5 12 10 0.1
-3-
Rev PrA 10/5/04
Preliminary Technical Data
ABSOLUTE MAXIMUM RATINGS1 Supply voltage .........................................................................+18V Input Voltage ....................................................................Gnd to Vs Differential Input Voltage .......................................................18V Output Short-Circuit Duration to Gnd2.....Observe Derating Curves Storage Temperature Range R, CP, RM, RU Package................................-65C to +150C Operating Temperature Range AD8661/AD8662/AD8664 ............................-40C to +125C Junction Temperature Range R, CP, RM, RU Package................................-65C to +150C Lead Temperature Range (Soldering, 60 Sec)............. +300C
AD8661/AD8662/AD8664
Package Type 8-Pin LFCSP (CP) 8-Pin microSOIC (RM) 8-Pin SOIC (R) 14-Pin SOIC (R) 14-Pin TSSOP (RU)
NOTES
1 Absolute maximum ratings apply at 25C, unless otherwise noted. 2 is specified for the worst-case conditions, i.e., is specified for device soldered JA JA in circuit board for surface mount packages.
JA 210 158 120 180
JC -45 43 36 35
Units C/W C/W C/W C/W C/W
ORDERING GUIDE Temperature Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C -40C to +125C Package Description 8-Pin LFCSP 8-Pin SOIC 8-Pin micro-SOIC 8-Pin SOIC 14-Pin SOIC 14-Pin TSSOP Package Option CP-8 R-8 RM-8 R-8 R-14 RU-14 Branding Information
Model AD8661ACP AD8661ARZ AD8662ARMZ AD8662ARZ AD8664ARZ AD8664ARUZ
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 1500 V readily accumulate on the human body and test equipment and can discharge without detection. Although this device features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality.
-4-
Rev PrA 10/5/04
Preliminary Technical Data
AD8661/AD8662/AD8664
8-Lead SOIC (RM-8)
OUTLINE DIMENSIONS 8-Lead LFCSP (CP-8 Suffix)
14-Lead TSSOP (RU-14)
8-Lead SO (R-8)
14-Lead SO (R-14)
-5-
Rev PrA 10/5/04
PR05200-0-10/04(PRA)

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