OP249 Analog Devices, OP249 Datasheet
OP249
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OP249 Summary of contents
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... Low distortion audio amplifiers Input buffer for ADCs Servo controllers GENERAL DESCRIPTION The OP249 is a high speed, precision dual JFET op amp, similar to the popular single op amp, the OP42. The OP249 outperforms available dual amplifiers by providing superior speed with excellent dc performance. Ultrahigh open-loop gain (1 kV/mV minimum), low offset voltage, and superb gain linearity makes the OP249 the industry’ ...
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... Changes to Table 2............................................................................ 4 Changes to Table 3 and Table 4....................................................... 5 Changes to Table 5............................................................................ 6 Changes to Figure 31...................................................................... 11 Changes to Figure 37 and Figure 38............................................. 12 Deleted OP249 SPICE Macro-Model Section ............................ 14 Deleted Figure 18; Renumbered Sequentially ............................ 14 Deleted Table I ................................................................................ 15 Changes to Discussion on Driving ADCs Section..................... 17 Updated Outline Dimensions ....................................................... 18 Changes to Ordering Guide .......................................................... 19 Typical Performance Characteristics ...
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... V 5 kΩ 3.5 4 step 0.01% 0 gain || 100 kHz kHz kHz 0.003 O ±4.5 ±15 Rev Page OP249 OP249F Max Min Typ Max Unit 0.5 0.2 0.7 mV 0.8 1.0 mV 1.5 μV/month 12.5 V ±11 V –12 31 μV/V 500 1200 V/mV 12.5 V ±12.0 V –12 ± ...
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... ±4 ± ± kΩ kΩ L Output shorted to ground No load kΩ step 0.01 gain M p-p 0 100 kHz kHz kHz O Rev Page OP249G Unit Min Typ Max 0.4 2 12.5 V ±11 V −12 μV/V 500 1100 V/mV 12.5 V ±12.0 V −12 ±20 ±50 mA −33 mA 5.6 7.0 ...
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... OP249G Min Typ Max 1.0 3 0.5 4.5 0.04 1.5 12.5 ±11 −12 100 250 1200 12.5 ±12.0 −12.5 5.6 7.0 ...
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... Storage Temperature Range Operating Temperature Range OP249A (Q) OP249F (Q) OP249G (N, R) Junction Temperature Range OP249A (Q), OP249F (Q) OP249G (N, R) Lead Temperature (Soldering, 60 sec) 1 Absolute maximum ratings apply to packaged parts, unless otherwise noted. 2 For supply voltages less than ±18 V, the absolute maximum input voltage is equal to the supply voltage ...
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... Figure 9. Power Supply Rejection vs. Frequency ±15V 2kΩ 50pF – –75 –50 – TEMPERATURE (°C) Figure 10. Slew Rate vs. Temperature 25° ±15V 2kΩ 0.2 0.4 0.6 DIFFERENTIAL INPUT VOLTAGE (V) Figure 11. Slew Rate vs. Differential Input Voltage OP249 T = 25° ±15V S 1M 100 125 0.8 1.0 ...
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... OP249 25° ±15V NEGATIVE 20 POSITIVE 100 200 300 CAPACITIVE LOAD (pF) Figure 12. Slew Rate vs. Capacitive Load 25° ±15V VCL 6 0.1% 4 0.01 –2 0.01% –4 0.1% –6 –8 –10 0 200 400 600 SETTLING TIME (ns) Figure 13. Step Size vs. Settling Time 100 T = 25° ±15V ...
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... BANDWIDTH (0.1Hz TO 10Hz 25° ±15V A S Figure 21. Low Frequency Noise 100 VCL VCL VCL VCL 10k 100k 1M 10M FREQUENCY (Hz) Figure 22. Closed-Loop Gain vs. Frequency T = 25° ±15V VCL VCL A = 100 VCL 1k 10k 100k 1M FREQUENCY (Hz) OP249 +1µV –1µV = 25°C = ±15V 100M 10M ...
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... OP249 OP249 5 AD712 FREQUENCY (Hz) Figure 24. Output Voltage vs. Frequency ±15V 2kΩ 100mV p VCL NEGATIVE EDGE 50 A VCL 40 POSITIVE EDGE VCL 0 0 100 200 300 LOAD CAPACITANCE (pF) Figure 25. Small Overshoot vs. Load Capacitance 25° ±15V |–V OHM 100 1k LOAD RESISTANCE (Ω) Figure 26. Maximum Output Voltage Swing vs. Load Resistance ...
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... T = 25°C A 160 V = ±15V S 415 × OP249 (830 OP AMPS) 140 120 100 –1000 –800 –600 –400 –200 0 200 400 V (µV) OS Figure 30. V Distribution (N-8) OS 300 V 270 S –40°C TO +85°C (830 OP AMPS) 240 210 180 150 120 TCV (µV/°C) OS Figure 31 ...
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... OP249 25° –75 –50 – TEMPERATURE (°C) Figure 36. Input Offset Current vs. Temperature 12000 V = ±15V S 10000 8000 R = 10kΩ L 6000 R = 2kΩ L 4000 2000 0 –75 –50 – TEMPERATURE (°C) Figure 37. Open-Loop Gain vs. Temperature 50 75 100 125 Figure 38. Short-Circuit Output Current vs. Junction Temperature ...
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... A rugged output stage provides the ability to drive a 600 Ω load and still maintain a clean ac response. The OP249 features a large signal response that is more linear and symmetric than previously available JFET input amplifiers. Figure 41 compares the large signal response of the OP249 to other industry-standard dual JFET amplifiers ...
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... The error bands on the output are 5 mV and 0.5 mV, respectively, for 0.1% and 0.01% accuracy. Figure 46 shows the settling time of the OP249, which is typically 870 ns. Moreover, problems in settling response, such as thermal tails and long-term ringing, are nonexistent. ...
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... REFERENCE OR V Figure 47. Fast Settling and Low Offset Error of the OP249 Enhances CMOS DAC Performance—Unipolar Operation REFERENCE 500Ω Figure 48. Fast Settling and Low Offset Error of the OP249 Enhances CMOS DAC Performance—Bipolar Operation ...
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... C = 5pF RESPONSE IS GROSSLY UNDERDAMPED, AND EXHIBITS RINGING Figure 49. Effect of Altering Compensation from Circuit in Figure 47—PM7545 CMOS DAC with 1/2 OP249, Unipolar Operation; Figure 49 illustrates the effect of altering the compensation on the output response of the circuit in Figure 47. Compensation is required to address the combined effect of the output capacitance of the DAC, the input capacitance of the op amp, and any stray capacitance ...
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... OP249. 100 2mV 2V Figure 51. Transient Recovery Time of the OP249 from Load Transient to 0.01% ANALOG +15V REF02 V GND 4 Figure 53. OP249 Dual Amplifiers Provide Both Stable −5 V Reference Input and Buffers Input to ADC912A input of REF IN 247.4ns 100ns +5V +15V 0.1µ INPUT 1/2 1 OP249 0.1µ ...
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... OP249 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 DESIGN. CORNER LEADS MAY BE CONFIGURED AS WHOLE OR HALF LEADS. ...
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... OP249GS-REEL7 −40°C to +85°C 1 OP249GSZ −40°C to +85°C 1 OP249GSZ-REEL −40°C to +85°C 1 OP249GSZ-REEL7 −40°C to +85° RoHS Compliant Part. For Military processed devices, see the standard microcircuit drawings (SMD) available at www.dscc.dla.mil/programs/milspec/default.asp. Table 7. SMD Part Number 5962-9151901M2A 5962-9151901MPA ...
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... OP249 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00296-0-5/07(F) Rev Page ...