Overview
The TPA751DR is a high-performance audio amplifier integrated circuit (IC) produced by Texas Instruments. Designed for portable and low-power audio applications, this device is part of the TPA751 series, which is known for its efficiency and compact design. The TPA751DR is a Class-AB audio power amplifier that delivers clear and robust audio output, making it ideal for consumer electronics such as smartphones, tablets, and portable media players. Its market positioning targets developers and manufacturers seeking reliable, low-power audio solutions with minimal external components. The TPA751DR stands out for its low quiescent current, small footprint, and excellent audio quality, making it a competitive choice in the portable audio market.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Supply Voltage | 2.5 to 5.5 | V | Operating range |
| Output Power | 1.1 | W | Into 8Ω at 5V |
| Quiescent Current | 2.6 | mA | Typical |
| THD+N | 0.1 | % | At 1kHz, 1W |
| Package | SOIC-8 | - | Surface mount |
| Operating Temperature | -40 to 85 | °C | Industrial range |
| Shutdown Current | 0.01 | μA | Typical |
| Gain | 6 | dB | Fixed |
| PSRR | 70 | dB | At 217Hz |
| SNR | 95 | dB | Typical |
Key Features
- Low Quiescent Current: Ensures minimal power consumption in standby mode, ideal for battery-powered devices.
- Compact Design: SOIC-8 package allows for space-efficient PCB layouts.
- High Audio Quality: Low THD+N and high SNR deliver clear and distortion-free audio output.
- Wide Supply Voltage Range: Supports operation from 2.5V to 5.5V, making it versatile for various applications.
- Integrated Shutdown Mode: Reduces power consumption to near-zero when not in use.
Applications
The TPA751DR is widely used in portable and low-power audio applications, including:
- Consumer Electronics: Smartphones, tablets, and portable media players benefit from its compact size and efficient power usage.
- Wearable Devices: Its low quiescent current makes it suitable for smartwatches and fitness trackers.
- IoT Devices: Provides high-quality audio output for voice-enabled IoT devices.
- Gaming Accessories: Enhances audio performance in portable gaming devices and headsets.
Q & A
1. What is the typical output power of the TPA751DR?
The TPA751DR delivers 1.1W of output power into an 8Ω load at 5V.
2. What is the operating voltage range of the TPA751DR?
The TPA751DR operates within a supply voltage range of 2.5V to 5.5V.
3. Does the TPA751DR support shutdown mode?
Yes, the TPA751DR features an integrated shutdown mode that reduces current consumption to 0.01μA.
4. What is the THD+N of the TPA751DR?
The total harmonic distortion plus noise (THD+N) is 0.1% at 1kHz and 1W output.
5. What package does the TPA751DR come in?
The TPA751DR is available in an SOIC-8 surface-mount package.
6. What is the quiescent current of the TPA751DR?
The typical quiescent current is 2.6mA.
7. Can the TPA751DR be used in wearable devices?
Yes, its low quiescent current and compact design make it ideal for wearable devices.
8. What is the signal-to-noise ratio (SNR) of the TPA751DR?
The SNR is typically 95dB.
9. Is the TPA751DR suitable for battery-powered applications?
Yes, its low power consumption and wide voltage range make it ideal for battery-powered devices.
10. What is the gain of the TPA751DR?
The TPA751DR has a fixed gain of 6dB.
