MAX4402 Maxim, MAX4402 Datasheet - Page 8
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MAX4402
Manufacturer Part Number
MAX4402
Description
The MAX4400–MAX4403 low-cost, general-purpose op amps offer rail-to-rail outputs, draw only 320µA of quiescent current, and operate from a single +2
Manufacturer
Maxim
Datasheet
1.MAX4400.pdf
(12 pages)
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circuit’s response by isolating the load capacitance
from the op amp’s output.
The MAX4401 features a low-power shutdown mode.
When SHDN goes low, the supply current drops to
20pA (typ) and the output enters a high-impedance
state. Pull SHDN high to enable the amplifier. Do not
leave SHDN floating. Figure 4 shows the shutdown
waveform.
The MAX4400–MAX4403 outputs typically settle within
5µs after power-up. Figure 5 shows the output voltage
on power-up and power-down.
Single/Dual/Quad, Low-Cost, Single-Supply,
Rail-to-Rail Op Amps with Shutdown
Figure 2. Small-Signal Transient Response with Excessive
Capacitive Load
Figure 4. Shutdown Waveform
8
_______________________________________________________________________________________
R
C
L
L
= 10MΩ TO GND
= 25pF
Applications Information
400µs/div
2µs/div
Shutdown Mode
SHDN
2V/div
OUT
IN
50mV/div
OUT
Power-Up
The MAX4400–MAX4403 operate from a single +2.5V
to +5.5V power supply. Bypass the power supply with a
0.1µF capacitor to ground.
Good layout techniques optimize performance by
decreasing the amount of stray capacitance at the op
amp’s inputs and outputs. To decrease stray capaci-
tance, minimize trace lengths by placing external com-
ponents close to the op amp’s pins.
Figure 3. Capacitive-Load-Driving Circuit
Figure 5. Power-Up/Power-Down Waveform
MAX4400/MAX4401 TRANSISTOR COUNT: 101
MAX4402 TRANSISTOR COUNT: 202
MAX4403 TRANSISTOR COUNT: 404
2V/div
1V/div
OUT
V
DD
Power Supplies and Layout
MAX4400
MAX4401
MAX4402
MAX4403
10µs/div
Chip Information
R
ISO
C
L