Single/Dual/Quad, 10MHz

Single-Supply Op Amps

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11

Full-Power Bandwidth

The MAX473/MAX474/MAX475’s fast 15V/µs slew rate

maximizes full-power bandwidth (FPBW). The FPBW is

given by:

SR

FPBW (Hz) = —————————————

where the slew rate (SR) is 15V/µs min. Figure 6 shows

the full-power bandwidth as a function of the peak-to-

peak AC output voltage.

Layout

A good layout improves performance by decreasing

the amount of stray capacitance at the amplifier’s

inputs and output. Since stray capacitance might be

unavoidable, minimize trace lengths and resistor leads,

and place external components as close to the pins as

possible.

Driving 390pF in parallel with 10k

Ω,

RL

10

Ω

MAX473/MAX474/

MAX475

100

0.1

01

3

4

2

1

10

OUTPUT VOLTAGE SWING (Vp-p)

FULL-POWER

BANDWIDTH

SMALL-SIGNAL

GAIN BANDWIDTH

Figure 3. MAX474 Driving 390pF

Figure 4. Capacitive-Load Driving Circuit

Figure 5. The MAX473 easily drives 1000pF using the

Capacitive-Load Driving Circuit (Figure 4).

Figure 6. Full-Power Bandwidth vs. Peak-to-Peak AC Voltage