Datasheet OP270 (Analog Devices)

Dual Very Low Noise Precision Operational Amplifier Data Sheet OP270 FEATURES FUNCTIONAL BLOCK DIAGRAMS Very low noise density of 5 nV/√Hz at 1 kHz maximum –IN A 1 16 OUT A Excellent input offset voltage of 75 μV maximum +IN A 2 15 NC Low offset voltage drift of 1 μV/°C maximum NC 3 14 NC Very high gain of 1500 V/mV minimum V– 4 13 V+ OP270 NC 5 12 NC Outstanding CMR of 106 dB minimum +IN B 6 11 NC Slew rate of 2.4 V/μs typical –IN B 7 10 OUT B Gain bandwidth product of 5 MHz typical NC 8 9 NC
01 -0
Industry-standard 8-lead dual pinout
325
NC = NO CONNECT
00 Figure 1. 16-Lead SOIC (S-Suffix)
OUT A 1 8 V+ –IN A 2 A B 7 OUT B +IN A 3 6 –IN B
02 -0
V– 4 5 +IN B
325
OP270
00 Figure 2. 8-Lead PDIP (P-Suffix) 8-Lead CERDIP (Z-Suffix)
GENERAL DESCRIPTION
The OP270 is a high performance, monolithic, dual operational consumption of the dual OP270 is one-third less than two OP27 amplifier with exceptionally low voltage noise density (5 nV/√Hz devices, a significant advantage for power conscious applications. maximum at 1 kHz). It offers comparable performance to the The OP270 is unity-gain stable with a gain bandwidth product industry-standard OP27 from Analog Devices, Inc. of 5 MHz and a slew rate of 2.4 V/μs. The OP270 features an input offset voltage of less than 75 μV The OP270 offers excellent amplifier matching, which is and an offset drift of less than 1 μV/°C, guaranteed over the full important for applications such as multiple gain blocks, low military temperature range. Open-loop gain of the OP270 is more noise instrumentation amplifiers, dual buffers, and low noise than 1,500,000 into a 10 kΩ load, ensuring excellent gain accuracy active filters. and linearity, even in high gain applications. The input bias The OP270 conforms to the industry-standard 8-lead CERDIP current is less than 20 nA, which reduces errors due to signal and PDIP pinouts. source resistance. With a common-mode rejection (CMR) of greater than 106 dB and a power supply rejection ratio (PSRR) For higher speed applications, the ADA4004-2 or the AD8676 of less than 3.2 μV/V, the OP270 significantly reduces errors are recommended. For a quad op amp, see the OP470 data sheet. due to ground noise and power supply fluctuations. The power
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Document Outline Features Functional Block Diagrams General Description Table of Contents Revision History Specifications Electrical Specifications Absolute Maximum Ratings ESD Caution Typical Performance Characteristics Test Circuits Applications Information Voltage and Current Noise Total Noise and Source Resistance Noise Measurements Peak-to-Peak Voltage Noise Noise Measurement—Noise Voltage Density Noise Measurement—Current Noise Density Capacitive Load Driving and Power Supply Considerations Unity-Gain Buffer Applications Low Phase Error Amplifier Five-Band, Low Noise, Stereo Graphic Equalizer Digital Panning Control Dual Programmable Gain Amplifier Outline Dimensions Ordering Guide