MAX4131 Maxim, MAX4131 Datasheet - Page 12

• Manufacturer Part Number: MAX4131
• Description: The MAX4130–MAX4134 family of operational amplifiers combines 10MHz gain-bandwidth product and excellent DC accuracy with Rail-to-Rail operation at the inputs and outputs
• Manufacturer: Maxim

Single/Dual/Quad, Wide-Bandwidth, Low-Power,
Single-Supply, Rail-to-Rail I/O Op Amps
The MAX4130–MAX4134 amplifiers typically settle with-
in 1µs after power-up. Figures 9 and 10 show the out-
put voltage and supply current on power-up, using the
test circuit of Figure 8.
The MAX4131 and MAX4133 have a shutdown option.
When the shutdown pin (SHDN) is pulled low, the sup-
ply current drops below 25µA per amplifier and the
Figure 7. Capacitive-Load Driving Circuit
Figure 9. Power-Up Output Voltage
12
______________________________________________________________________________________
OUT
V
CC
Power-Up and Shutdown Mode
TIME (5µs/div)
R
S
C
L
amplifiers are disabled with the outputs in a high-
impedance state. Pulling SHDN high or leaving it float-
ing enables the amplifier. In the dual-amplifier
MAX4133, the shutdown functions operate indepen-
dently. Figures 11 and 12 show the output voltage and
supply current responses of the MAX4131 to a shut-
down pulse, using the test circuit of Figure 8.
Figure 8. Power-Up/Shutdown Test Circuit
Figure 10. Power-Up Supply Current
0V TO 2.7V STEP
FOR POWER-UP
TEST; 2.7V FOR
ENABLE TEST
SHUTDOWN
*FOR SHUTDOWN TEST ONLY.
(500µA/div)
(1V/div)
V
V
CC
I
CC
EE
*
2kΩ
0.1µF
2kΩ
TIME (5µs/div)
10Ω
MONITORING POINT
SUPPLY-CURRENT
SHDN
0V TO 2.7V
STEP FOR
SHUTDOWN
TEST
OUT
10kΩ