MAX9814ETD+TG51

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-performance, low-power, single-supply microphone amplifier
• Package: TDFN-14
• Essence: MAX9814ETD+TG51 is a microphone amplifier IC designed for high-quality audio applications.
• Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Gain Range: 20dB to 60dB
• Input-Referred Noise: 30nV/√Hz
• Total Harmonic Distortion + Noise (THD+N): 0.015% (typical)
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX9814ETD+TG51 package consists of 14 pins arranged as follows:

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| | | 1 7 14 | | | | 2 6 13 | | | | 3 5 12 | | | | 4 11 | |_______________| ```

Pin Description: 1. IN+ 2. IN- 3. GND 4. BYPASS 5. SHDN 6. VDD 7. OUT 8. NC 9. NC 10. NC 11. NC 12. NC 13. NC 14. NC

Functional Features

• Low noise and distortion for high-quality audio amplification.
• Wide gain range allows flexibility in various applications.
• Single-supply operation simplifies circuit design.
• Shutdown mode for power-saving when not in use.
• Bypass pin for direct output connection.

Advantages and Disadvantages

Advantages: - High-performance audio amplification. - Low power consumption. - Wide gain range for versatile applications. - Small package size for space-constrained designs. - Shutdown mode for power-saving.

Disadvantages: - Limited pin configuration options. - Requires external components for complete circuit implementation.

Working Principles

The MAX9814ETD+TG51 is a microphone amplifier IC that amplifies the audio signal captured by a microphone. It operates on a single supply voltage and provides a wide gain range, allowing the user to adjust the amplification level according to their requirements. The IC features low input-referred noise and distortion, ensuring high-quality audio amplification. Additionally, it includes a shutdown mode to minimize power consumption when the amplifier is not in use.

Detailed Application Field Plans

The MAX9814ETD+TG51 is suitable for various audio applications, including:

1. Portable audio devices: Provides high-quality audio amplification for smartphones, tablets, and portable media players.
2. Voice recognition systems: Amplifies the microphone signal in voice-controlled devices such as smart speakers and voice assistants.
3. Audio recording equipment: Enhances the audio signal in professional microphones and recording devices.
4. Communication systems: Improves the audio quality in intercoms, two-way radios, and hands-free communication devices.

Detailed and Complete Alternative Models

1. MAX9812L+T: Similar microphone amplifier IC with a different pin configuration.
2. MAX4466EUK+T: Low-power microphone amplifier IC with adjustable gain.
3. LM386N-4/NOPB: Audio amplifier IC with low voltage operation and adjustable gain.

These alternative models offer similar functionality and can be considered based on specific application requirements.

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