MAX473 Maxim, MAX473 Datasheet - Page 11

• Manufacturer Part Number: MAX473
• Description: Single/Dual/Quad / 10MHz Single-Supply Op Amps
• Manufacturer: Maxim

Figure 3. MAX474 Driving 390pF
Figure 4. Capacitive-Load Driving Circuit
The MAX473/MAX474/MAX475’s fast 15V/µs slew rate
maximizes full-power bandwidth (FPBW). The FPBW is
given by:
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.
V
IN
Driving 390pF in parallel with 10k ,
V
FPBW (Hz) = —————————————
CC
= 5V, buffer configuration
______________________________________________________________________________________
π [V
Full-Power Bandwidth
OUT
peak-to-peak(max)]
10
R L
SR
MAX473/MAX474/
MAX475
C
L
V
OUT
Single/Dual/Quad, 10MHz
Single-Supply Op Amps
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
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.
100
0.1
10
1
0
OUTPUT VOLTAGE SWING (Vp-p)
FULL-POWER
BANDWIDTH
1
2
GAIN BANDWIDTH
SMALL-SIGNAL
3
4
Layout
11