汇顶科技提供高性能的D类智能音频放大器产品，其中最新一代TFA9865系列，凭借7W高输出功率、低于7uV超低底噪的卓越音频性能，重塑移动设备音质标杆。
TFA9865系列搭载汇顶自研第一代CoolPWM技术，彻底打破传统技术架构，凭借纯数字链路设计及先进能效管理机制，为移动终端提供更响亮、清晰的音质；高效数字化链路设计带来更高效率、更低静态功耗的性能表现，配合先进智能电池管理功能，显著延长设备续航时间。同时，汇顶携手知名芯片制造商，量产国内首创工艺特调的90纳米BCD工艺，先进工艺联合全新数字架构，实现2.2 * 2.2 mm²的尺寸，为终端厂商创新应用提供更广阔空间。此外，汇顶独特的SpeakerBoost扬声器性能优化算法，可最大限度实现温度和振幅保护功能并实现微型扬声器最大程度的性能释放。
| roduct Info | Features | TFA9865 | TFA9882 | TFA9896 | TFA9892 | TFA9874 | TFA9894 | TFA9876 | TFA9873 | TFA9875 |
|---|
| General | Embedded DSP | No | No | Yes | Yes | No | Yes | No | No | No |
| Package Size | 4.84 mm2 | 1.9 mm2 | 5.6 mm2 | 11.36 mm2 | 6.6 mm2 | 8.9 mm2 | 7.1 mm2 | 5.4 mm2 | 7.34 mm2 |
| 2.2 * 2.2 * 0.4 | 1.27 * 1.49 * 0.4 | 2.72 * 2.06 * 0.3 | 3.63 * 3.13 * 0.3 | 2.62 * 2.51 * 0.4 | 3.55 * 2.51 * 0.4 | 2.8 * 2.52 * 0.4 | 2.44 * 2.2 * 0.4 | 2.74 * 2.68 * 0.3 |
| Package Type | WLCSP-36 | WLCSP-9 | WLCSP-30 | WLCSP-49 | WLCSP-36 | WLCSP-48 | WLSCP36 | WLCSP-30 | WLCSP-36 |
| Customer Sample | Available | Available | Available | Available | Available | Available | Available | Available | Available |
| Mass Production | Available | Available | Available | Available | Available | Available | Available | Available | Available |
| Interfaces | Audio Input Interface | TDM-I2S | I2S | TDM-I2S | TDM-I2S or 1 * PDM | TDM-I2S | TDM-I2S | TDM-I2S | TDM-I2S | TDM-I2S |
| AEC Feedback | Yes | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Performance | Boost Voltage | 12 V | No | 6.1 V | 12 V | 10 V | 10 V | 10 V | 8 V | 12 V |
| RMS Output Power (8Ω~1%THD) | 7 W | 1.45 W | 2.1 W | 6.6 W | 5.6 W | 5.6 W | 5.6 W | 3.5 W | 7.7 W |
| RMS Output Power (6Ω~1%THD) | 7 W | - | - | 6.6 W | 6.1 W | 6.1 W | 6.1 W | 4.5 W | 7.8 W |
| RMS Output Power (4 Ω~1%THD) | - | 2.7 W | 3.2 W | 6.7 W | 6.5 W | 6.5 W | 6.2 W | 4.7 W | - |
| Speaker Channels | Mono | Mono | Mono | Mono | Mono | Mono | Mono | Mono | Mono |
| Typical Speaker Load (Ω) | 4-8-32 | 4-8 | 4-8-32 | 4-8-32 | 4-8-32 | 4-8-32 | 4-8-32 | 4-8-32 | 6-8-38 |
| PSRR (dB) | 80 | 85 | 90 | 75 | 80 | 80 | 80 | 85 | 80 |
| DR (dB) | 124 | 103 | 100 | 100 | 110 | 110 | 120 | 109 | 116 |
| MB-DRC | Yes (On Host) | None | (On Host) | Yes (3-band) | Yes (On Host) | Yes (3-band) | Yes (On Host) | Yes (On Host) | Yes (On Host) |
| TDH+N | 0.05% | 0.02% | 0.03% | 0.04% | 0.04% | 0.04% | 0.05% | 0.05% | 0.05% |
| Noise (uV) / Receiver Mode | 7 | 24 | 30 / 18 | 16 | 14 | 14 | 7 | 9 | 10 |
