TPA731DGNG4

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Single-channel audio amplifier - High output power capability - Low distortion and noise - Wide supply voltage range - Thermal and short-circuit protection - Small package size

Package: DGN (8-pin, plastic dual in-line package)

Essence: TPA731DGNG4 is a single-channel audio amplifier IC designed for high-quality audio amplification in various applications.

Packaging/Quantity: The TPA731DGNG4 is typically sold in reels or tubes containing multiple units. The exact quantity may vary depending on the supplier.

Specifications

• Supply Voltage Range: 4.5V to 26V
• Output Power: Up to 1.2W into 8Ω at 10% THD+N
• Total Harmonic Distortion + Noise (THD+N): 0.03% (typical)
• Signal-to-Noise Ratio (SNR): 95dB (typical)
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to 85°C

Pin Configuration

The TPA731DGNG4 IC has the following pin configuration:

```

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| | --| VDD GND |-- Pin 1: Power Supply --| IN+ SHDN |-- Pin 2: Non-Inverting Input / Shutdown Control --| IN- OUT |-- Pin 3: Inverting Input / Output --| BP VDD |-- Pin 4: Bypass Capacitor Connection --| GAIN1 GAIN0 |-- Pin 5: Gain Selection --| NC NC |-- Pin 6: No Connection --| NC NC |-- Pin 7: No Connection --| VDD GND |-- Pin 8: Power Supply |___________| ```

Functional Features

• Single-ended input
• Gain selection (GAIN0 and GAIN1 pins) for flexible amplification options
• Shutdown control (SHDN pin) for power-saving mode
• Thermal and short-circuit protection to prevent damage to the IC
• Bypass capacitor connection (BP pin) for improved audio performance

Advantages and Disadvantages

Advantages: - High output power capability allows for driving various speaker loads - Low distortion and noise ensure high-quality audio reproduction - Wide supply voltage range provides flexibility in different applications - Small package size enables space-efficient designs - Thermal and short-circuit protection safeguards the IC from damage

Disadvantages: - Limited to single-channel audio amplification - May require additional external components for specific applications

Working Principles

The TPA731DGNG4 is a class AB audio amplifier that amplifies the input audio signal to a higher power level suitable for driving speakers. It operates by receiving an analog audio input signal through the non-inverting (IN+) and inverting (IN-) inputs. The gain of the amplifier can be adjusted using the GAIN0 and GAIN1 pins, allowing for customization based on the application requirements.

The amplified audio signal is then delivered at the output pin (OUT) to drive the connected speaker. The TPA731DGNG4 incorporates thermal and short-circuit protection mechanisms to ensure safe operation and prevent damage to the IC.

Detailed Application Field Plans

The TPA731DGNG4 is commonly used in various audio applications, including: - Portable audio devices - Home theater systems - Automotive audio systems - Multimedia speakers - Gaming consoles

Detailed and Complete Alternative Models

Some alternative models to the TPA731DGNG4 include: - TPA731DGNR - TPA731DR - TPA731DG4

These alternative models offer similar functionality and characteristics, providing options for different design requirements.

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