MAX408ACSA Просмотр технического описания (PDF) - Maxim Integrated

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MAX408ACSA

Single/Dual/Quad High-Speed, Fast-Settling, High Output Current Operational Amplifier

Maxim Integrated 

Single/Dual/Quad High-Speed, Fast-Settling,

High Output Current Operational Amplifier

2kΩ

1kΩ

+1V

eIN

-1V

SETTLING

TIME

eIN

RL

CL

10pF

eO 2kΩ

90%

150Ω

300Ω

eS = SETTLE VOLTAGE

eOUT

10%

-2V

SLEW RATE

2V

±4mV OF

FINAL VALUE

Note that to properly measure es, amplifier and settle resistor ratios should be matched to 0.5% and probe capacitance ≤ 35pF

Figure 1A. Settling Time and Slew Rate Test Circuit

eIN

OV

eo

OV

eo

es

Figure 1B. Large Signal Response

Figure 1C. Small Signal Response

OV

___________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

OV

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

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