TPA0172 具有立体声耳机驱动和 I2C 控制的立体声 AB 类音频放大器
The TPA0172 is a stereo audio power amplifier in a 24-pin TSSOP thermally enhanced package capable of delivering 2 W of continuous RMS power per channel into 4- loads. This device utilizes the I2C bus to control its functionality, which minimizes the number of external components needed, simplifies the design, and frees up board space for other features. When driving 1 W into 8- speakers, the TPA0172 has less than 0.2% THD+N from 20 Hz to 20 kHz.
Included within this device is integrated depop circuitry that virtually eliminates transients that cause noise in the speakers at power up, power down, and while transitioning in and out of shutdown mode.
The overall gain of the amplifier is controlled digitally by the volume control registers which are programmed via the I2C interface
| LM4995 | |
| Speaker Channels | Stereo |
| Headphone Channels | Stereo |
| Speaker Amp Type | Class-AB |
| Output Power (W) | 2 |
| PSRR (dB) | 75 |
| Supply Min (Min) (Volt) | 4.5 |
| Supply Max (Max) (Volt) | 5.5 |
TPA0172 特性
- I2C Bus Controllable
- 2-W/Ch Output Power Into 4- Load
- Low Supply Current and Shutdown Current
- Depop Circuitry
- Digital Volume Control From 20 dB to -60 dB
- Internal Gain Control, Which Eliminates External Gain-Setting Resistors
- Fully Differential Input
- Stereo Input MUX
- PC-Beep Input
- Compatible With PC 99 Desktop Line-Out Into 10-k Load
- Compatible With PC 99 Portable Into 8- Load
- Surface-Mount Power Packaging 24-Pin TSSOP PowerPAD™
TPA0172 芯片订购指南
| 器件 | 状态 | 温度 | 价格（美元） | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| TPA0172PWP | ACTIVE | -40 to 85 | 3.15 | 1ku | HTSSOP (PWP) | 24 | 60 | TUBE | |
| TPA0172PWPG4 | ACTIVE | -40 to 85 | 3.15 | 1ku | HTSSOP (PWP) | 24 | 60 | TUBE | |
| TPA0172PWPR | ACTIVE | -40 to 85 | 2.60 | 1ku | HTSSOP (PWP) | 24 | 2000 | LARGE T&R | |
| TPA0172PWPRG4 | ACTIVE | -40 to 85 | 2.60 | 1ku | HTSSOP (PWP) | 24 | 2000 | LARGE T&R |
TPA0172 质量与无铅数据
| 器件 | 环保计划* | 铅/焊球涂层 | MSL 等级/回流焊峰 | 环保信息与无铅 (Pb-free) | DPPM / MTBF / FIT 率 |
| TPA0172PWP | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPA0172PWP | TPA0172PWP |
| TPA0172PWPG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPA0172PWPG4 | TPA0172PWPG4 |
| TPA0172PWPR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPA0172PWPR | TPA0172PWPR |
| TPA0172PWPRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | TPA0172PWPRG4 | TPA0172PWPRG4 |
