OP281GRU

a FEATURES Low Supply Current: 4 A/Amplifier max Single-Supply Operation: 2.7 V to 12 V Wide Input Voltage Range Rail-to-Rail Output Swing Low Offset Voltage: 1.5 mV No Phase Reversal APPLICATIONS Comparator Battery Powered Instrumentation Safety Monitoring Remote Sensors Low Voltage Strain Gage Amplifiers Ultralow Power, Rail-to-Rail Output Operational Amplifiers OP181/OP281/OP481 PIN CONFIGURATIONS 8-Lead SO (S Suffix) NULL –IN A +IN A V– 1 8 NC V+ OUT A NULL 8-Lead Epoxy DIP (P Suffix) NULL 1 –IN A 2 +IN A 3 V– 4 8 NC OP181 4 5 OP181 7 V+ 6 OUT A 5 NULL NC = NO CONNECT NC = NO CONNECT 8-Lead SO (S Suffix) OUT A –IN A +IN A V– 1 8 V+ OUT B –IN B +IN B 8-Lead Epoxy DIP (P Suffix) OUT A 1 –IN A 2 +IN A 3 V– 4 OP281 8 V+ 7 OUT B 6 –IN B 5 +IN B OP281 4 5 GENERAL DESCRIPTION The OP181, OP281 and OP481 are single, dual and quad ultralow power, single-supply amplifiers featuring rail-to-rail outputs. All operate from supplies as low as 2.0 V and are specified at +3 V and +5 V single supply as well as ± 5 V dual supplies. Fabricated on Analog Devices’ CBCMOS process, the OP181 family features a precision bipolar input and an output that swings to within millivolts of the supplies and continues to sink or source current all the way to the supplies. Applications for these amplifiers include safety monitoring, portable equipment, battery and power supply control, and signal conditioning and interface for transducers in very low power systems. The output’s ability to swing rail-to-rail and not increase supply current, when the output is driven to a supply voltage, enables the OP181 family to be used as comparators in very low power systems. This is enhanced by their fast saturation recovery time. Propagation delays are 250 µs. The OP181/OP281/OP481 are specified over the extended industrial (–40°C to +85°C) temperature range. The OP181, single, and OP281, dual, amplifiers are available in 8-pin plastic DIPs and SO surface mount packages. The OP281 is also available in 8-lead TSSOP. The OP481 quad is available in 14pin DIPs, narrow 14-pin SO and TSSOP packages. 8-Lead TSSOP (RU Suffix) 1 4 8 5 OP281 14-Lead Epoxy DIP (P Suffix) 14-Lead Narrow-Body SO (S Suffix) 1 14 OUT A 1 –IN A 2 +IN A 3 V+ 4 +IN B 5 –IN B 6 OUT B 7 14 OUT D 13 –IN D 12 +IN D OP481 OP481 11 V– 10 +IN C 9 –IN C 8 OUT C 7 8 14-Lead TSSOP (RU Suffix) 1 14 OP481 NOTE: PIN ORIENTATION IS EQUIVALENT FOR EACH PACKAGE VARIATION 7 8 R EV. 0 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. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 World Wide Web Site: http://www.analog.com Fax: 617/326-8703 © Analog Devices, Inc., 1996 OP181/OP281/OP481–SPECIFICATIONS ELECTRICAL SPECIFICATIONS (@ V = +3.0 V, V S CM = 1.5 V, TA = +25 C unless otherwise noted) Min Typ Max 1.5 2.5 10 7 2 Units mV mV nA nA V dB V/mV V/mV µV/°C pA/°C pA/°C Parameter INPUT CHARACTERISTICS Offset Voltage Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio Large Signal Voltage Gain Offset Voltage Drift Bias Current Drift Offset Current Drift OUTPUT CHARACTERISTICS Output Voltage High Output Voltage Low Short Circuit Limit POWER SUPPLY Power Supply Rejection Ratio Supply Current/Amplifier DYNAMIC PERFORMANCE Slew Rate Turn On Time Turn On Time Saturation Recovery Time Gain Bandwidth Product Phase Margin NOISE PERFORMANCE Voltage Noise Voltage Noise Density Current Noise Density NOTES 1 VOS is tested under no load condition. Specifications subject to change without notice. Symbol VOS IB IOS CMRR AVO ∆VOS/∆T ∆IB/∆T ∆IOS/∆T VOH VOL ISC PSRR ISY Conditions Note 1 –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +85°C 3 0.1 0 VCM = 0 V to 2.0 V, –40°C ≤ TA ≤ +85°C RL = 1 MΩ, VO = 0.3 V to 2.7 V –40°C ≤ TA ≤ +85°C 65 5 2 95 13 10 20 2 RL = 100 kΩ to GND, –40°C ≤ TA ≤ +85°C RL = 100 kΩ to V+, –40°C ≤ TA ≤ +85°C 2.925 2.96 25 ± 1.1 75 V mV mA VS = 2.7 V to 12 V –40°C ≤ TA ≤ +85°C VO = 0 V –40°C ≤ TA ≤ +85°C RL = 100 kΩ, CL = 50 pF AV = 1, VO = 1 AV = 20, VO = 1 76 95 3 4 5 dB µA µA V/ms µs µs µs kHz Degrees µV p-p nV/√Hz pA/√Hz SR GBP φo en p-p en in 0.1 Hz to 10 Hz f = 1 kHz 25 40 50 65 95 70 10 75