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MAX428CPA Datasheet(PDF) 7 Page - Maxim Integrated Products |
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MAX428CPA Datasheet(HTML) 7 Page - Maxim Integrated Products |
7 / 12 page ___________Application Information AC Characteristics The 35MHz 10dB crossover point of the MAX408/ 428/448 is achieved without feed forward compensa- tion, a technique which can produce long tails in the recovery characteristic. The single pole rolloff follows the classic 20dB/decade slope to frequencies approaching 50MHz. The 10dB (3.2V/V) phase margin of 50°, even with a capacitive load of 50pF, gives stable and predictable performance down to non-inverting gain configurations of approximately 3V/V (inverting gains of -2V/V). At frequencies beyond 50MHz, the 20dB/decade slope is disturbed by an output stage zero, the damping factor of which is dependent upon the RL, CL load combination. This results in loss of gain Single/Dual/Quad High-Speed, Fast-Settling, High Output Current Operational Amplifier _______________________________________________________________________________________ 7 eIN 1k Ω 2k Ω 2k Ω 300 Ω 150 Ω eS = SETTLE VOLTAGE RL +1V -1V 2V ±4mV OF FINAL VALUE SETTLING TIME -2V 10% SLEW RATE 90% CL 10pF eO eIN eOUT eo eo es eIN OV OV OV OV Figure 1A. Settling Time and Slew Rate Test Circuit Figure 1B. Large Signal Response Figure 1C. Small Signal Response Note that to properly measure es, amplifier and settle resistor ratios should be matched to 0.5% and probe capacitance ≤ 35pF |
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