OP297GS Analog Devices Inc, OP297GS Datasheet
OP297GS
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OP297GS Summary of contents
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FEATURES Low offset voltage: 50 μV maximum Low offset voltage drift: 0.6 μV/°C maximum Very low bias current: 100 pA maximum Very high open-loop gain: 2000 V/mV minimum Low supply current (per amplifier): 625 μA maximum Operates from ±2 V ...
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OP297 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Pin Configuration ............................................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics ............................................................. 3 Absolute Maximum Ratings ............................................................ 4 Thermal Resistance ...................................................................... 4 ESD Caution ...
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SPECIFICATIONS ELECTRICAL CHARACTERISTICS @ V = ± 25°C, unless otherwise noted Table 1. Parameter Symbol Input Offset Voltage V OS Long-Term Input Voltage Stability Input Offset Current I OS Input Bias Current I B Input ...
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OP297 ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage Input Voltage 1 1 Differential Input Voltage Output Short-Circuit Duration Storage Temperature Range Z-Suffix P-Suffix, S-Suffix Operating Temperature Range OP297E (Z-Suffix) OP297F, OP297G (P-Suffix, S-Suffix) Junction Temperature Z-Suffix P-Suffix, S-Suffix Lead ...
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TYPICAL PERFORMANCE CHARACTERISTICS 400 1200 UNITS 300 200 100 0 –100 –80 –60 –40 – INPUT OFFSET VOLTAGE (µV) Figure 5. Typical Distribution of Input Offset Voltage 250 1200 UNITS 200 150 100 50 0 –100 –80 –60 ...
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OP297 10k BALANCED OR UNBALANCED V = ±15V 100 –55°C ≤ T ≤ +125° +25° 100 1k 10k SOURCE RESISTANCE (Ω) Figure 11. Effective Offset Voltage vs. Source ...
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T = 25° ±2V TO ±15V S 100 CURRENT NOISE VOLTAGE 10 NOISE 100 FREQUENCY (Hz) Figure 17. Voltage Noise Density and Current Noise Density vs. Frequency 25° ...
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OP297 100 80 GAIN 60 PHASE –20 –40 100 1k 10k 100k FREQUENCY (Hz) Figure 23. Open-Loop Gain, Phase vs. Frequency 25° ±15V VCL V = ...
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APPLICATIONS INFORMATION Extremely low bias current over a wide temperature range makes the OP297 attractive for use in sample-and-hold amplifiers, peak detectors, and log amplifiers that must operate over a wide temperature range. Balancing input resistances is unnecessary with the ...
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OP297 OPEN-LOOP GAIN LINEARITY The OP297 has both an extremely high gain of 2000 V/mV minimum and constant gain linearity. This enhances the precision of the OP297 and provides for very high accuracy in high closed-loop gain applications. Figure 30 ...
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APPLICATION CIRCUITS PRECISION ABSOLUTE VALUE AMPLIFIER The circuit in Figure precision absolute value amplifier with an input impedance of 30 MΩ. The high gain and low TCV of the OP297 ensure accurate operation with microvolt OS input ...
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OP297 NONLINEAR CIRCUITS Due to its low input bias currents, the OP297 is an ideal log amplifier in nonlinear circuits such as the square and square root circuits shown in Figure 35 and Figure 36. Using the squaring circuit of ...
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OUTLINE DIMENSIONS 0.210 (5.33) MAX 0.150 (3.81) 0.130 (3.30) 0.115 (2.92) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN ...
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... OP297GS −40°C to +85°C OP297GS-REEL −40°C to +85°C OP297GS-REEL7 −40°C to +85°C 1 OP297GSZ −40°C to +85°C 1 OP297GSZ-REEL −40°C to +85°C 1 OP297GSZ-REEL7 −40°C to +85° RoHS Compliant Part. 5.00 (0.1968) 4.80 (0.1890 ...
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NOTES Rev Page OP297 ...
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OP297 NOTES ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00300-0-4/08(G) Rev Page ...