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

TPA2028D1是TI德州仪器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，本站介绍了TPA2028D1的封装应用图解、特点和优点、功能等，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 - 德州仪器

产品特性

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)

产品应用

Wireless or Cellular Handsets and PDAs
Portable Navigation Devices
Portable DVD Player
Notebook PCs
Portable Radio
Portable Games
Educational Toys
USB Speakers

产品说明

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.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPA2028D1	DSBGA (9)	1.63 mm x 1.63 mm

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