MAX4461UETT+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: Low-power, low-noise, rail-to-rail output
• Package: 6-pin SOT-23
• Essence: Single-supply microphone preamplifier
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Supply Voltage Range: 2.4V to 5.5V
• Input-Referred Noise: 30nV/√Hz
• Gain Bandwidth Product: 1.2MHz
• Output Voltage Swing: Rail-to-Rail
• Quiescent Current: 20µA
• Shutdown Current: 0.01µA

Pin Configuration

The MAX4461UETT+T has the following pin configuration:

```

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| | --| VDD OUT |-- Pin 1: VDD - Power supply --| GND IN- |-- Pin 2: GND - Ground --| SHDN IN+ |-- Pin 3: SHDN - Shutdown control input --| NC NC |-- Pin 4: Not connected --| OUT IN+ |-- Pin 5: OUT - Amplified audio output --| GND VDD |-- Pin 6: GND - Ground |___________| ```

Functional Features

• Low-power operation suitable for battery-powered applications
• Low input-referred noise for high-quality audio amplification
• Rail-to-rail output swing allows maximum utilization of the supply voltage range
• Shutdown control input for power-saving mode when not in use

Advantages and Disadvantages

Advantages: - Low power consumption - High gain bandwidth product - Rail-to-rail output swing - Shutdown control for power-saving

Disadvantages: - Limited number of pins for additional functionality - Not suitable for high-voltage applications

Working Principles

The MAX4461UETT+T is a single-supply microphone preamplifier designed to amplify low-level audio signals. It operates on a supply voltage range of 2.4V to 5.5V, making it suitable for battery-powered applications. The input-referred noise is minimized to ensure high-quality audio amplification.

The amplifier provides a rail-to-rail output swing, allowing the amplified audio signal to utilize the full supply voltage range. This feature is beneficial in maximizing the dynamic range of the audio signal.

The MAX4461UETT+T also includes a shutdown control input (SHDN) that allows the device to enter a power-saving mode when not in use. This helps conserve battery life in portable applications.

Detailed Application Field Plans

The MAX4461UETT+T is commonly used in various audio applications, including:

1. Portable audio devices: MP3 players, smartphones, tablets
2. Voice recorders and dictation devices
3. Hearing aids and assistive listening devices
4. Audio surveillance systems
5. Automotive audio systems

Detailed and Complete Alternative Models

1. MAX9814: Low-power, high-gain microphone amplifier with automatic gain control (AGC)
2. LM386: Low-voltage audio power amplifier with adjustable gain
3. AD620: Low-cost, low-power instrumentation amplifier with programmable gain

These alternative models offer different features and specifications, providing flexibility for various audio amplification requirements.

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