MAX4233 Maxim, MAX4233 Datasheet - Page 12

• Manufacturer Part Number: MAX4233
• Description: The MAX4230–MAX4234 single/dual/quad, high-output-drive CMOS op amps feature 200mA of peak output current, rail-to-rail input, and output capability from single 2
• Manufacturer: Maxim

High-Output-Drive, 10MHz, 10V/µs,
Rail-to-Rail I/O Op Amps with Shutdown in SC70
The resistor improves the circuit’s phase margin by iso-
lating the load capacitor from the op amp’s output.
The MAX4231/MAX4233 have a shutdown option. When
the shutdown pin (SHDN) is pulled low, supply current
drops to 0.5µA per amplifier (V
fiers are disabled, and their outputs are driven to V
Since the outputs are actively driven to V
down, any pullup resistor on the output causes a cur-
rent drain from the supply. Pulling SHDN high enables
the amplifier. In the dual MAX4233, the two amplifiers
shut down independently. Figure 10 shows the
MAX4231’s output voltage to a shutdown pulse. The
MAX4231–MAX4234 typically settle within 5µs after
power-up. Figures 11 and 12 show I
plus and voltage power-up cycle.
Figure 9. Capacitive-Load-Driving Circuit
Figure 10. Shutdown Output Voltage Enable/Disable
12
______________________________________________________________________________________
1V/div
1V/div
Power-Up and Shutdown Modes
4µs/div
DD
R
ISO
= 2.7V), the ampli-
DD
to a shutdown
SS
C
L
in shut-
SS
.
When exiting shutdown, there is a 6µs delay before the
amplifier’s output becomes active (Figure 10).
Figure 11. Shutdown Enable/Disable Supply Current
Figure 12. Power-Up/Down Supply Current
MAX4230
MAX4231
MAX4232
MAX4233
MAX4234
PART
1mA/div
1mA/div
2V/div
2V/div
SHDN
2V/div
OUT
V
I
DD
I
DD
DD
AMPS PER
PACKAGE
Single
Single
Quad
Dual
Dual
40µs/div
100µs/div
Selector Guide
SHUTDOWN
MODE
Yes
Yes
—
—
—