TPA2028D1是TI公司的一款扬声器放大器（AB类/D类）产品，TPA2028D1是具有快速增益提升 SmartGain(TM) AGC 和 DRC 的 3.0W 单声道 D 类音频放大器，本页介绍了TPA2028D1的产品说明、应用、特性等，并给出了与TPA2028D1相关的TI元器件型号供参考。
TPA2028D1 - 具有快速增益提升 SmartGain(TM) AGC 和 DRC 的 3.0W 单声道 D 类音频放大器 - 扬声器放大器（AB类/D类） - 低功耗放大器 - TI公司（Texas Instruments，德州仪器）
- Fast AGC Start-up Time: 5 ms
- Pinout Compatible with TPA2018D1
- Filter-Free Class-D Architecture
- 3 W Into 4 Ω at 5 V (10% THD+N)
- 880 mW Into 8 Ω at 3.6 V (10% THD+N)
- Power Supply Range: 2.5 V to 5.5 V
- Flexible Operation With/Without I2C™
- Programmable DRC/AGC Parameters
- Digital I2C™ Volume Control
- Selectable Gain from –28 dB to 30 dB in 1-dB Steps (when compression is used)
- Selectable Attack, Release and Hold Times
- 4 Selectable Compression Ratios
- Low Supply Current: 1.8 mA
- Low Shutdown Current: 0.2μA
- High PSRR: 80 dB
- AGC Enable/Disable Function
- Limiter Enable/Disable Function
- Short-Circuit and Thermal Protection
- Space-Saving Package
- 1.63 mm × 1.63 mm Nano-Free™ DSBGA (YZF)
- Wireless or Cellular Handsets and PDAs
- Portable Navigation Devices
- Portable DVD Player
- Notebook PCs
- Portable Radio
- Portable Games
- Educational Toys
- USB Speakers
The TPA2028D1 device is a mono, filter-free Class-D audio power amplifier with volume control, fast gain ramp SmartGain™, dynamic range compression (DRC), and automatic gain control (AGC). It is available in a 1.63 mm × 1.63 mm wafer chip-scale package (DSBGA).
The DRC/AGC function in the TPA2028D1 device is programmable through a digital I2C interface. The DRC/AGC function can be configured to automatically prevent distortion of the audio signal and enhance quiet passages that are normally not heard. The DRC/AGC can also be configured to protect the speaker from damage at high power levels and compress the dynamic range of music to fit within the dynamic range of the speaker. The gain can be selected from –28 dB to +30 dB in 1-dB steps. The TPA2028D1 is capable of driving 3 W at 5 V into a 4-Ω load or 880 mW at 3.6 V into an 8-Ω load. The device features hardware and software shutdown controls and also provides thermal and short-circuit protection. The TPA2028D1 has a faster AGC gain ramp during start-up than TPA2018D1.
In addition to these features, a fast start-up time and small package size make the TPA2028D1 an ideal choice for cellular handsets, PDAs and other portable applications.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| TPA2028D1 | DSBGA (9) | 1.63 mm x 1.63 mm |
