MAX4400AUKT 查看數據表（PDF） - Maxim Integrated

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MAX4400AUKT

Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown

Maxim Integrated 

Single/Dual/Quad, Low-Cost, Single-Supply,

Rail-to-Rail Op Amps with Shutdown

IN

50mV/div

OUT

2µs/div

Figure 2. Small-Signal Transient Response with Excessive

Capacitive Load

RISO

CL

MAX4400

MAX4401

MAX4402

MAX4403

Figure 3. Capacitive-Load-Driving Circuit

RL = 10MΩ TO GND

CL = 25pF

400µs/div

Figure 4. Shutdown Waveform

SHDN

2V/div

OUT

VDD

2V/div

OUT

1V/div

10µs/div

Figure 5. Power-Up/Power-Down Waveform

Applications Information

Shutdown Mode

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

unconnected. Figure 4 shows the shutdown waveform.

Power-Up

The MAX4400–MAX4403 outputs typically settle within

5µs after power-up. Figure 5 shows the output voltage

on power-up and power-down.

Power Supplies and Layout

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.

8

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