MAX492 Maxim, MAX492 Datasheet
MAX492
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MAX492 Summary of contents
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... Not Recommended for New Designs The MAX495 was manufactured for Maxim by an outside wafer foundry using a process that is no longer available not recommended for new designs. A Maxim replacement or an industry second-source may be available. The data sheet remains available for existing users. ...
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... Rev 2; 9/96 Single-Supply Rail-to-Rail Op Amps _______________General Description The dual MAX492, quad MAX494, and single MAX495 operational amplifiers combine excellent DC accuracy with rail-to-rail operation at the input and output. Since the common-mode voltage extends from V the devices can operate from either a single supply (+2.7V to +6V) or split supplies (± ...
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... Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability ...
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Single-Supply Rail-to-Rail Op Amps AC ELECTRICAL CHARACTERISTICS (V = 2. GND +25°C, unless otherwise noted PARAMETER Gain-Bandwidth Product R L Phase Margin R L Gain Margin R L Total Harmonic Distortion ...
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Single/Dual/Quad, Micropower, Single-Supply Rail-to-Rail Op Amps DC ELECTRICAL CHARACTERISTICS (V = 2. GND 0V PARAMETER Input Offset Voltage V CM Input Offset Voltage Tempco Input Bias Current V CM Input ...
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Single-Supply Rail-to-Rail Op Amps DC ELECTRICAL CHARACTERISTICS (V = 2. GND 0V PARAMETER Input Offset Voltage Input Offset Voltage Tempco Input Bias Current Input Offset Current Common-Mode Input Voltage Range ...
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... -10 -15 -20 - _______________________________________________________________________________________ GAIN AND PHASE vs. FREQUENCY 180 MAX492-02 80 120 60 GAIN PHASE -60 0 -120 C = 470pF - +1000 -180 -40 0.01 0 100 1000 FREQUENCY (kHz) OFFSET VOLTAGE vs. TEMPERATURE ...
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... 110 R = 100k L 100 10k 600 0 100 200 300 400 V (mV) OUT MAXIMUM OUTPUT VOLTAGE vs. TEMPERATURE 200 180 L EE 160 140 V = 2.7V 120 100 6V 100k 2.7V 100k 40 ...
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Single/Dual/Quad, Micropower, Single-Supply Rail-to-Rail Op Amps ____________________________Typical Operating Characteristics (continued +25° 5V 0V, unless otherwise noted VOLTAGE-NOISE DENSITY vs. FREQUENCY 100 10 INPUT REFERRED 1 0.01 0.1 1 FREQUENCY (kHz) TOTAL ...
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... Operating Characteristics (continued +25° 5V 0V, unless otherwise noted LARGE-SIGNAL TRANSIENT RESPONSE 50 s/div V = +5V + 10k ______________________________________________________________Pin Description PIN NAME MAX492 MAX494 MAX495 1 1 — OUT1 — — NULL — — — IN1- — ...
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... NULL pins (pins 1 and 5), with the wiper con- nected to V circuit is ±6mV. External offset adjustment is not avail- able for the dual MAX492 or quad MAX494. The input bias currents of the MAX492/MAX494/MAX495 are typically less than 50nA. The bias current flows into the device when the NPN input stage is active, and it flows out when the PNP input stage is active ...
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... Input Stage Protection Circuitry T he MAX492/MAX494/MAX495 include internal protec- tion circuitry that prevents damage to the precision input stage from large differential input voltages. This protection circuitry consists of back-to-back diodes between IN+ and IN- with two 1 ...
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... V IN 50mV/div V OUT 50mV/div Figure 7b. MAX492 Voltage Follower with 500pF Load— = 20k Ω 50mV/div V OUT 50mV/div Figure 7c. MAX492 Voltage Follower with 500pF Load— = ∞ 50mV/div V OUT 50mV/div 10 s/div V IN 50mV/div V OUT 50mV/div 10 s/div ...
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... Frequency stability can be improved by adding an out- put isolation resistor (R (Figure 8). This resistor improves the phase margin of the circuit by isolating the load capacitor from the op amp’s output. Figure 9a shows the MAX492 driving 10,000pF (R L isolation resistor. V OUT ...
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... If samples are taken infrequently, the op amps, along with the ADC, may be powered down most of the time. When power is reapplied to the MAX492/MAX494/ MAX495, it takes some time for the voltages on the sup- ply pin and the output pin of the op amp to settle. ...
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... IN3 IN3- 8 OUT3 TRANSISTOR COUNT: 134 (single MAX495) SUBSTRATE CONNECTED TO V MAX492 IN1- IN1+ OUT1 0.068" (1.728mm OUT2 IN2- IN2+ 0.069" (1.752mm) MAX495 NULL1 V CC 0.056" (1.422mm) OUT NULL2 V EE 0.055" (1.397mm) 268 (dual MAX492) 536 (quad MAX494 ...
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... B E Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 16 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © ...