Overview
The TFA9810T/N1,118 is a stereo full-bridge audio amplifier IC produced by NXP USA Inc. This component is designed for high-efficiency class D audio amplifier systems. It features two full-bridge Bridge-Tied Load (BTL) power stages, drive logic, protection control logic, and full differential input comparators. The TFA9810T/N1,118 is suitable for various audio applications requiring compact and efficient amplifier solutions without the need for an external heat sink.
Key Specifications
| Parameter | Condition | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VP) | VP = VDDPx − VSSPx | 8 | 12 | 20 | V |
| Off-state Current (Ioff) | Off mode | - | 110 | 200 | µA |
| Quiescent Current (Iq) | With load, filter, and snubbers connected | - | 35 | 45 | mA |
| RMS Output Power (Po(RMS)) | RL = 8 Ω; VP = 12 V; THD = 10 %; Two channel driven | - | - | 9.5 | W |
| Total Harmonic Distortion-plus-Noise (THD+N) | Po is 1 W; f = 1 kHz; AES17 brick-wall filter | - | 0.04 | 0.1 | % |
| Output Power Efficiency (ηpo) | Po = 9 W into 8 Ω | 87 | 89 | - | % |
| Load Impedance | - | - | - | 8 | Ω |
Key Features
- Stereo full-bridge power comparator for class D audio amplifier applications
- No external heat sink required
- Operating voltage range: asymmetrical from 8 V to 20 V
- Thermally protected with overtemperature, overcurrent, overvoltage, undervoltage, and overdissipation sensors
- Zero dead-time switching and current-limiting to prevent audible interruptions
- Full differential input comparators and drive logic for efficient operation
Applications
- Self-oscillating or open-loop class D audio amplifier applications
- Flat-panel television sets
- Flat-panel monitors
- Multimedia systems
- Wireless speakers
- High-end CRT television sets
Q & A
- What is the TFA9810T/N1,118 used for? The TFA9810T/N1,118 is used for high-efficiency class D audio amplifier systems.
- What is the supply voltage range of the TFA9810T/N1,118? The supply voltage range is from 8 V to 20 V.
- Does the TFA9810T/N1,118 require an external heat sink? No, it does not require an external heat sink.
- What are the key protection features of the TFA9810T/N1,118? It includes overtemperature, overcurrent, overvoltage, undervoltage, and overdissipation sensors.
- What is the typical output power efficiency of the TFA9810T/N1,118? The typical output power efficiency is 89%.
- What is the load impedance for the TFA9810T/N1,118? The load impedance is 8 Ω.
- What are some common applications of the TFA9810T/N1,118? Common applications include flat-panel television sets, multimedia systems, and wireless speakers.
- What is the total harmonic distortion-plus-noise (THD+N) of the TFA9810T/N1,118? The THD+N is typically 0.04% at 1 kHz with an AES17 brick-wall filter.
- How does the TFA9810T/N1,118 handle overtemperature conditions? If the junction temperature exceeds about 150 °C, the outputs become floating or the device shuts down and restarts immediately.
- What is the quiescent current of the TFA9810T/N1,118? The quiescent current is typically 35 mA with load, filter, and snubbers connected.
