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TPA3110D2
The TPA3110D2 is a Class-D audio amplifier
integrated circuit (IC) from Texas Instruments. It is designed for audio applications requiring high efficiency, low distortion, and a small form factor. Here are some key features and specifications of the TPA3110D2:
Key Features:
1. **Output Power**:
– 15W per channel at 8Ω and 10% THD+N
– 10W per channel at 8Ω and 10% THD+N
– 30W into a mono speaker at 4Ω in BTL (Bridge-Tied Load) configuration
2. **Efficiency**:
– High efficiency, up to 90%, which reduces the need for heat sinking and saves power.
3. **Supply Voltage**:
– Wide supply voltage range from 8V to 26V.
4. **Low Noise**:
– Low idle noise and low output noise.
5. **Thermal and Short Circuit Protection**:
– Built-in protection against over-temperature, over-current, and short-circuit conditions.
6. **Modulation Scheme**:
– Advanced modulation schemes to ensure low total harmonic distortion (THD+N).
7. **Filter-Free Operation**:
– Capable of driving speakers directly without needing an output filter (filter-free operation).
8. **Differential Inputs**:
– Differential inputs to reduce noise and enhance audio quality.
9. **Gain Settings**:
– Adjustable gain settings to suit different application requirements.
10. **Package**:
– Available in a compact 28-pin HTSSOP package.
### Applications:
– Portable audio systems
– Docking stations
– Home audio systems
– Televisions
– Soundbars
### Typical Application Circuit:
A typical application circuit for the TPA3110D2 would include:
– Power supply connections to VCC and GND
– Differential audio input signals
– Output connections to speakers
– Optional external components for filtering, gain setting, and feedback
Here is a simplified block diagram and pinout for the TPA3110D2:
Pinout (28-pin HTSSOP):
1. GND
2. PVCC
3. AVCC
4. IN1P
5. IN1N
6. IN2P
7. IN2N
8. AVCC
9. GND
10. GND
11. OUT1P
12. OUT1N
13. PVCC
14. PVCC
15. OUT2P
16. OUT2N
17. GND
18. GND
19. SD
20. FAULT
21. GAIN0
22. GAIN1
23. MUTE
24. GND
25. PVCC
26. GVDD
27. BYPASS
28. GND
### Example Circuit:
For an example application, the TPA3110D2 could be configured with a power supply of 12V, driving an 8Ω speaker, with input signals connected to IN1P and IN1N for the left channel, and IN2P and IN2N for the right channel. The gain settings can be adjusted using the GAIN0 and GAIN1 pins, and the device can be muted or shut down using the MUTE and SD pins, respectively.