Description

The MAX4468ESA-T is a micropower op amp optimized for use as a microphone preamplifier. It belongs to the MAX4465-MAX4469 series, which provides an ideal combination of optimized gain bandwidth product vs. supply current and low voltage operation in ultra-small packages. The MAX4468 is decompensated for a minimum stable gain of +5V/V and provides a 600kHz gain bandwidth product. It features Rail-to-Rail outputs, high AVOL, excellent power-supply rejection, and common-mode rejection ratios for operation in noisy environments.

Specifications and features

• +2.4V to +5.5V Supply Voltage Operation
• Versions with 5nA Complete Shutdown Available (MAX4467/MAX4468)
• Excellent Power-Supply Rejection Ratio: 112dB
• Excellent Common-Mode Rejection Ratio: 126dB
• High AVOL: 125dB (RL = 100kΩ)
• Rail-to-Rail Outputs
• Low 24µA Quiescent Supply Current
• Gain Bandwidth Product: 200kHz (MAX4465/MAX4467/MAX4469), 600kHz AV ≥ 5 (MAX4466/MAX4468)
• Available in Space-Saving Packages: 5-Pin SC70 (MAX4465/MAX4466), 8-Pin SOT23 (MAX4467/MAX4468/MAX4469)

Application Scenarios

The MAX4468ESA-T can be used in various audio applications that require microphone preamplification. It is particularly suitable for use in noisy environments where excellent power-supply rejection and common-mode rejection ratios are essential.

Comparison

- Optimized gain bandwidth product vs. supply current

- Low voltage operation

- Rail-to-Rail outputs

- Decompensated for a minimum stable gain of +5V/V

- Requires external power supply