Dual Low Power Operational Amplifier, a Single or Dual Supply OP221 FEATURES PIN CONNECTIONS Excellent TCV Match, 2 V/ C Max OS 8-Lead SOIC Low Input Offset Voltage, 150 V Max (S-Suffix) Low Supply Current, 550 A Max Single Supply Operation, 5 V to 30 V Low Input Offset Voltage Drift, 0.75 V/ C +IN A 1 8 IN A High Open-Loop Gain, 1500 V/mV Min V 2 7 OUT A High PSRR, 3 V/V +IN B 3 6 V+ Wide Common-Mode Voltage IN B 4 5 OUT B Range, V to within 1.5 V of V+ Pin Compatible with 1458, LM158, LM2904 NC = NO CONNECT Available in Die Form GENERAL DESCRIPTION The OP221 is a monolithic dual operational amplifier that can provide high performance in instrumentation amplifier designs. be used either in single or dual supply operation. The wide The individual amplifiers feature very low input offset voltage, supply voltage range, wide input voltage range, and low supply low offset voltage drift, low noise voltage, and low bias current. current drain of the OP221 make it well-suited for operation They are fully compensated and protected. from batteries or unregulated power supplies. Matching between channels is provided on all critical parameters The excellent specifications of the individual amplifiers combined including input offset voltage, tracking of offset voltage vs. tem- with the tight matching and temperature tracking between channels perature, non-inverting bias currents, and common-mode rejection. SIMPLIFIED SCHEMATIC V+ Q11 Q28 Q12 Q26 Q3 Q4 OUTPUT Q1 Q2 IN Q27 Q9 Q10 +IN Q7 Q4 Q29 Q6 Q5 Q13 * NULL Q33 V * ACCESSIBLE IN CHIP FORM ONLY REV. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. use, nor for any infringements of patents or other rights of third parties that Tel: 781/329-4700 www.analog.com may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Fax: 781/326-8703 Analog Devices, Inc., 2002OP221SPECIFICATIONS (Electrical Characteristics at V = 2.5 V to 15 V, T = 25 C, unless otherwise noted.) s A OP221G Parameter Symbol Conditions Min Typ Max Unit Input Offset Voltage V 250 500 mV OS Input Offset Current Ios V = 0 1.5 7 nA CM Input Bias Current I V = 0 70 120 nA B CM 1 Input Voltage Range IVR V+ = 5 V, V = 0 V 0/3.5 V V = 15 V 15/13.5 S Common-Mode CMRR V+ = 5 V, V = 0 V Rejection Ratio 0 V V 3.5 V 75 85 CM V = 15 V dB S 15 V V 13.5 V 80 90 CM Power Supply PSRR V = 2.5 V to 15 V 32 100 S mV/V Rejection Ratio V = 0 V, V+ = 5 V to 30 V 57 180 Large-Signal Avo V = 15 V, R = 10 kW S L Voltage Gain V = 10 V 800 V/mV O Output Voltage V V+ = 5 V, V = 0 V 0.8/4 V O Swing R = 10 kW L V = 15 V, R = 10 kW13.5 S L 2 Slew Rate SR R = 10 kW 0.2 0.3 V/mS L Bandwidth BW 600 kHz Supply Current I V = 2.5 V, No Load 550 650 SY S mA (Both Amplifiers) V = 15 V, No Load 850 900 S 2 REV. C