MAX4400, MAX4401, MAX4402, MAX4403 Single/Dual/Quad, Low-Cost, Single-Supply, Rail-to-Rail Op Amps with Shutdown

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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 +2.5V to +5.5V supply. For additional power conservation, the MAX4401 offers a low-power shutdown mode that reduces supply current to 1µA (max) and puts the amplifier's output in a high-impedance state. These devices deliver ±1.4mA of output current and are unity-gain stable with a 1MHz gain-bandwidth product driving capacitive loads up to 400pF. The MAX4400–MAX4403 are specified to +125°C, making them suitable for use in a variety of harsh environments, such as automotive applications.

The MAX4400 single amplifier is available in ultra-small 5-pin SC70 and space-saving 5-pin SOT23 packages. The single MAX4401 includes the shutdown feature and is available in a 6-pin SC70. The MAX4402 is a dual amplifier available in 8-pin SOT23 and SO packages. The MAX4403 quad amplifier is packaged in a 14-pin TSSOP or SO.

Key Features

Applications/Uses

Single +2.5V to +5.5V Supply Voltage Range
320µA Quiescent Current per Amplifier
1µA max Shutdown Mode (MAX4401)
Available in Space-Saving Packages
- 5-Pin SC70 (MAX4400)
- 6-Pin SC70 (MAX4401)
- 8-Pin SOT23 (MAX4402)
110dB AVOL with 2kΩ Load
0.015% THD with 2kΩ Load
Rail-to-Rail Output Voltage Swing
1.4mA of Sink and Source Load Current
Unity-Gain Stable up to C_LOAD = 400pF
Ground Sensing Inputs

	Electronic Ignition Modules
	Infrared Receivers
	Instruments and Terminals
	Portable Communications
	Sensor Signal Detection
	Single-Supply Zero-Crossing Detectors

Key Specifications: Operational Amplifiers

Part Number

Amps Per Pkg.

Rail to Rail

Min. Stable Closed Loop Gain (V/V)

Min. Total Supply (V)

Max. Total Supply (V)

Typ. Supply Current per Amp. (µA)

Max. V_OS (µV)

Typ. CMRR @ DC (dB)

Typ PSRR @ DC (dB)

Max. Input I_BIAS (nA)

Typ. Unity Gain BW (MHz)

Typ. Slew Rate (V/µs)

Input Voltage Noise Density (nV/√Hz)

Input Current Noise Density (pA/√Hz)

Low Power Shutdown

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^*

MAX4400

Output Only

2.5

5.5

320

4,500

100

0.1

0.8

0.001

SC-70/5
SOT-23/5

-40 to +125

$0.33 @ 1k

MAX4401

4,500

Yes

SC-70/6

$0.38 @ 1k

MAX4402

5,500

SOIC/8
SOT-23/8
uMAX/8

$0.55 @ 1k

MAX4403

5,500

SOIC/14
TSSOP/14

$0.73 @ 1k

See All Operational Amplifiers (143)

Notes:
^*This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.