MAX4331 Maxim, MAX4331 Datasheet - Page 12

• Manufacturer Part Number: MAX4331
• Description: The MAX4330–MAX4334 single/dual/quad op amps combine a wide 3MHz bandwidth, low-power operation, and excellent DC accuracy with rail-to-rail inputs and outputs
• Manufacturer: Maxim

The MAX4330–MAX4334 outputs typically settle within
5µs after power-up. Using the test circuit of Figure 7,
Figures 8 and 9 show the output voltage and supply
current on power-up and power-down.
Single/Dual/Quad, Low-Power, Single-Supply,
Rail-to-Rail I/O Op Amps with Shutdown
Figure 5. Small-Signal Transient Response with Excessive
Capacitive Load and Isolation Resistor
Figure 7. Power-Up/Shutdown Test Circuit
12
0V TO +2.7V STEP
__________Applications Information
TEST, +2.7V STEP
FOR SHUTDOWN-
FOR POWER-UP
ENABLE TEST
______________________________________________________________________________________
OUT
IN
A
R
V
ISO
V
= +1, C
CC
2k
2k
= 39
L
= 510pF
2 s/div
100
SHDN
MONITORING POINT
SUPPLY-CURRENT
0V TO +2.7V
STEP FOR
SHUTDOWN
TEST
50mV/div
50mV/div
Power-Up
MAX4330
MAX4331
MAX4332
MAX4333
MAX4334
V
OUT
10k
The MAX4331/MAX4333 feature a low-power shutdown
mode. When the shutdown pin (SHDN) is pulled low, the
supply current drops to 9µA per amplifier (typical), the
amplifier is disabled, and the outputs enter a high-
impedance state. Pulling SHDN high or leaving it float-
ing enables the amplifier. Figures 10 and 11 show the
MAX4331/MAX4333’s output voltage and supply-current
responses to a shutdown pulse.
Figure 6. Capacitive-Load-Driving Circuit
Figure 8. Power-Up/Down Output Voltage
OUT
V
CC
MAX4330
MAX4331
MAX4332
MAX4333
MAX4334
5 s/div
R
Shutdown Mode
ISO
1V/div
500mV/div
C
L