OP181GS-REEL7

a Ultralow Power, Rail-to-Rail Output Operational Amplifiers OP181/OP281/OP481 FEATURES Low Supply Current: 4 mA/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 OBS APPLICATIONS Comparator Battery Powered Instrumentation Safety Monitoring Remote Sensors Low Voltage Strain Gage Amplifiers GENERAL DESCRIPTION PIN CONFIGURATIONS 8-Lead SO (S Suffix) 1 NULL –IN A +IN A V– 8 OP181 4 5 8-Lead Epoxy DIP (P Suffix) NC NULL 1 V+ OUT A NULL –IN A 2 8 NC 7 V+ OP181 +IN A 3 NC = NO CONNECT 6 OUT A V– 4 5 NULL NC = NO CONNECT 8-Lead SO (S Suffix) 8-Lead Epoxy DIP (P Suffix) OLE 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. 1 OUT A –IN A +IN A V– 8 OP281 4 5 V+ OUT B –IN B +IN B 8-Lead TSSOP (RU Suffix) 1 8 OP281 4 5 14-Lead Epoxy DIP (P Suffix) OUT A 1 14 OUT D –IN A 2 13 –IN D +IN A 3 12 +IN D OP481 –IN A 2 7 OUT B +IN A 3 6 –IN B V– 4 5 +IN B 14-Lead Narrow-Body SO (S Suffix) 1 14 OP481 11 V– +IN B 5 10 +IN C –IN B 6 9 –IN C OUT B 7 8 V+ TE OUT A 1 V+ 4 OP281 8 OUT C 7 8 14-Lead TSSOP (RU Suffix) 1 14 OP481 NOTE: PIN ORIENTATION IS EQUIVALENT FOR EACH PACKAGE VARIATION 7 8 REV. 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 = +258C unless otherwise noted) Parameter␣ Symbol Conditions INPUT CHARACTERISTICS␣ Offset Voltage VOS Note 1 –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +85°C –40°C ≤ TA ≤ +85°C Input Bias Current Input Offset Current Input Voltage Range Common-Mode Rejection Ratio IB IOS Large Signal Voltage Gain AVO Offset Voltage Drift Bias Current Drift Offset Current Drift ∆VOS/∆T ∆IB/∆T ∆IOS/∆T VOH Output Voltage Low VOL Short Circuit Limit ISC POWER SUPPLY␣ Power Supply Rejection Ratio Supply Current/Amplifier Typ 3 0.1 0 CMRR 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 OBS OUTPUT CHARACTERISTICS Output Voltage High Min PSRR ISY DYNAMIC PERFORMANCE␣ Slew Rate Turn On Time Turn On Time Saturation Recovery Time Gain Bandwidth Product Phase Margin GBP φo NOISE PERFORMANCE␣ Voltage Noise Voltage Noise Density Current Noise Density en p-p en in SR RL = 100 kΩ to GND, –40°C ≤ TA ≤ +85°C RL = 100 kΩ to V+, –40°C ≤ TA ≤ +85°C 65 5 2 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 0.1 Hz to 10 Hz f = 1 kHz 76 Units 1.5 2.5 10 7 2 mV mV nA nA V 95 13 OLE 2.925 Max 10 20 2 dB V/mV V/mV µV/°C pA/°C pA/°C 2.96 V 25 ± 1.1 75 mV mA TE 95 3 4 5 dB µA µA 25 40 50 65 95 70 V/ms µs µs µs kHz Degrees 10 75