TPA2018D1YZFR vs TPA2017D2RTJR
| Part Number |
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| Category | Linear - Amplifiers - Audio | Linear - Amplifiers - Audio |
| Manufacturer | Texas Instruments | Texas Instruments |
| Description | IC AMP CLASS D MONO 3W 9DSBGA | IC AMP CLASS D STEREO 2.8W 20QFN |
| Package | Tape & Reel (TR) | Cut Tape (CT) |
| Series | SmartGain™ | SmartGain™ |
| Type | Class D | Class D |
| Features | Differential Inputs, I²C, Short-Circuit and Thermal Protection, Shutdown, Volume Control | Differential Inputs, Short-Circuit and Thermal Protection, Shutdown, Volume Control |
| Voltage - Supply | 2.5V ~ 5.5V | 2.5V ~ 5.5V |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | 9-UFBGA, DSBGA | 20-WFQFN Exposed Pad |
| Supplier Device Package | 9-DSBGA | 20-QFN (4x4) |
| Output Type | 1-Channel (Mono) | 2-Channel (Stereo) |
| Max Output Power x Channels @ Load | 3W x 1 @ 4Ohm | 2.8W x 2 @ 4Ohm |
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1. What is the Total Harmonic Distortion (THD) of an audio amplifier?
Total Harmonic Distortion (THD) is the distortion component introduced by an audio amplifier during the signal amplification process. the lower the THD, the closer the amplified audio signal will be to the original signal, and usually high quality audio amplifiers have a THD value of less than 1%.
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2. What is a Class D audio amplifier and what are its advantages?
Class D audio amplifiers work through Pulse Width Modulation (PWM) technology and have extremely high efficiency (typically up to 90% or higher), making them suitable for use in portable audio equipment or high-efficiency sound systems. It generates less heat because it reduces energy consumption.
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3. What is the signal-to-noise ratio (SNR) of an audio amplifier?
Signal-to-noise ratio (SNR) is a measure of the ratio of the audio signal to the background noise, with higher values indicating less noise in the audio signal. A high SNR usually means clearer sound output.
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4. How can I improve the thermal performance of my audio amplifier?
Audio amplifiers generate heat when they operate, especially Class A and Class AB amplifiers. Ways to improve heat dissipation include using a larger heat sink, adding a fan, or using a more efficient Class D amplifier. A good thermal design will improve the performance and life of the amplifier.
