PRELIMINARY TECHNICAL DATA Precision Very Low Noise Low Input Bias Current Operational Amplifiers Preliminary Technical Data AD8671/AD8672/AD8674 FEATURES Low Noise: 3nV/√Hz Wide Bandwidth: 10MHz Low Input Bias Current: 10nA max. Low Offset Voltage: 75 µV max. High open loop gain: 135dB Low Supply Current: 3 mA/Amp Dual supply operation: ±5V to ±15V Unity Gain Stable No Phase Reversal APPLICATIONS PLL filters Instrumentation Sensors and Controls Professional quality audio GENERAL DESCRIPTION The AD8671, AD8672 and AD8674 are precision single, dual and quad amplifiers featuring very low noise, very low offset voltage and drift, low input bias current, 10Mhz bandwidth and low power consumption. Outputs are stable with capacitive loads of over 100pF. Supply current is less than 3 mA per amplifier at 30V. Applications for these amplifiers include high quality PLL filters, instrumentation--thermocouple, RTD, strain-bridge and other sensor signal conditioning-precision filters and professional quality audio. The AD8671, AD8672 and AD8674 are specified over the extended industrial (-40° to +125°C) temperature range. The AD8671, single, is available in the 8-lead MSOP and 8-lead SOIC packages. The AD8672, dual, is available in the 8-lead MSOP and 8-lead SOIC packages. The AD8674, quad, is 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. AD8671/AD8672/AD8674 available in 14-lead TSSOP and narrow 14-lead SO packages. Surface mount devices in TSSOP and MSOP packages are available in tape and reel only. PIN CONFIGURATIONS 8-Lead MSOP (RM-8) 8-Lead SO (R-8) AD8672 AD8671 8-Lead SO (R-8) 14-Lead TSSOP (RU-14) AD8671 AD8674 8-Lead MSOP (RM-8) 14-Lead SO (R-14) AD8672 AD8674 One Technology Way, PO Box 9106, Norwood, MA 02062-9106, USA Tel: 781/329-4700 www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1997 Rev 0.2 2/21/02 PRELIMINARY TECHNICAL DATA Preliminary Technical Data AD8671/AD8672/AD8674 ELECTRICAL CHARACTERISTICS Parameter Symbol INPUT CHARACTERISTICS Offset Voltage VOS (@ VS= ±5.0V, VCM = 0V, T A =+25°C unless noted Conditions Min Typ -40°< T A < +125°C Max Units 75 µV 175 µV Input Bias Current IB -10 10 nA Input Offset Current IOS -10 10 nA Input Voltage Range Common-Mode Rejection Ratio VCM = -2V to 2V -2.5 100 2.5 CMRR 130 V dB Large Signal Voltage Gain AVO RL = 2 kΩ , Vo= -3V to 3V 1000 6000 Offset Voltage Drift ∆VOS/∆T -40°< T A < +125°C OUTPUT CHARACTERISTICS Output Voltage High VOH IL = 1 mA, -40°C to +125°C Output Voltage Low VOL IL = 1 mA, -40°C to +125°C Output Current IOUT POWER SUPPLY Power Supply Rejection Ratio PSRR VS = ±2.5 V to ±15 V Supply Current/Amplifier ISY VO = 0V 0.3 3 SR Gain Bandwidth Product GBP NOISE PERFORMANCE Voltage Noise en p-p 0.1 Hz to 10 Hz Voltage Noise Density en Current Noise Density in AD8671/AD8672/AD8674 RL =2 kΩ V -3 V ±10 mA 130 dB 3000 -40°<TA < +125°C DYNAMIC PERFORMANCE Slew Rate µV/°C 3.8 -3.9 110 V/mV 1 3500 µA 4000 µA 4 V/µs 10 MHz 0.08 µV p-p f = 1 kHz 3 nV/√Hz f = 1 kHz 0.2 pA/√Hz Rev0.2 2/21/02 PRELIMINARY TECHNICAL DATA Preliminary Technical Data AD8671/AD8672/AD8674 ELECTRICAL CHARACTERISTICS (@ VS= ±15V, VCM = 0V, T A =+25°C unless noted) Parameter Symbol Conditions Min Typ Max Units INPUT CHARACTERISTICS Offset Voltage VOS 75 µV Input Bias Current IB -10 175 µV 10 nA Input Offset Current IOS -10 10 nA Input Voltage Range Common-Mode Rejection Ratio CMRR VCM = -12V to 12V -12.5 110 12.5 140 V dB Large Signal Voltage Gain AVO RL = 2 kΩ , Vo = -10V to 10V 1000 6000 V/mV Offset Voltage Drift ∆VOS/∆T -40°< T A < +125°C OUTPUT CHARACTERISTICS Output Voltage High VOH IL = 10 mA, -40°C to +125°C Output Voltage Low VOL IL = 10 mA, -40°C to +125°C Output Current IOUT ±20 mA Short Circuit Current ISC ±30 mA POWER SUPPLY Power Supply Rejection Ratio PSRR VS = ±2.5 V to ±15 V 130 dB Supply Current/Amplifier ISY VO = 0V -40°< T A < +125°C 0.3 -10 13.5 -13.5 110 3000 -40°<TA < +125°C DYNAMIC PERFORMANCE Slew Rate SR Gain Bandwidth Product GBP NOISE PERFORMANCE Voltage Noise en p-p 0.1 Hz to 10 Hz Voltage Noise Density en Current Noise Density in AD8671/AD8672/AD8674 RL =2 kΩ µV/°C 1 V 10 V 3500 µA 4000 µA 4 V/µs 10 MHz 0.08 µV p-p f = 1 kHz 3 nV/√Hz f = 1 kHz 0.2 pA/√Hz Rev0.2 2/21/02 PRELIMINARY TECHNICAL DATA Preliminary Technical Data AD8671/AD8672/AD8674 ABSOLUTE MAXIMUM RATINGS 1 Package Type θJA θJC Units Supply voltage ............................................................................36V Input Voltage....................................................................Vs- to Vs+ Differential Input Voltage ......................................................... TBD Output Short-Circuit Duration .......................................... Indefinite Storage Temperature Range RM, R, RU Package .......................................-65°C to +150°C Operating Temperature Range AD8671/AD8672/AD8674............................-40°C to +125°C Junction Temperature Range RM, R, RU Package .......................................-65°C to +150°C Lead Temperature Range (Soldering, 60 Sec)........................+300°C 8-pin MSOP (RM) 8-Pin SOIC (R) 14-Pin TSSOP (RU) 14-Pin SOIC (R) 190 158 180 120 44 43 35 36 °C/W °C/W °C/W °C/W NOTES 1 Absolute maximum ratings apply at 25°C, unless otherwise noted. 2 θ is specified for the worst case conditions, i.e., θ is specified for device soldered JA JA in circuit board for surface mount packages. ORDERING GUIDE Model AD8671ARM AD8671AR AD8672ARM AD8672AR AD8674ARU AD8674AR Temperature Range -40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C -40°C to +125°C AD8671/AD8672/AD8674 Package Description 8-Pin MSOP 8-Pin SOIC 8-Pin MSOP 8-Pin SOIC 14-Pin TSSOP 14-Pin SOIC Package Option RM-8 R-8 RM-8 R-8 RU-14 R-14 Rev0.2 2/21/02