___________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

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

High Output Current Operational Amplifier

_______________________________________________________________________________________

7

1k

Ω

2k

Ω

2k

Ω

300

Ω

150

Ω

+1V

-1V

2V

±4mV OF

FINAL VALUE

SETTLING

TIME

-2V

10%

SLEW RATE

90%

10pF

OV

OV

OV

OV

Figure 1A. Settling Time and Slew Rate Test Circuit

Figure 1B. Large Signal Response

Figure 1C. Small Signal Response