Audio Amp Speaker 1-CH Mono 3W Class-D 9-Pin DS-BGA T/R

The TPA2028D1 is a mono, filter-free Class-D audio power amplifier with volume control, dynamic range compression (DRC) and automatic gain control (AGC). It is available in a 1,63 mm x 1,63 mm wafer chip-scale package (WCSP). The DRC/AGC function in the TPA2028D1 is programmable via 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 4 O load or 880 mW at 3.6 V into 8 O load. The device features hardware and software shutdown controls and also provides thermal and short-circuit protection. The TPA2028D1 has 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. 

Fast AGC Start-up Time: 5 ms

Pin-out Compatible with TPA2018D1

Filter-Free Class-D Architecture

3 W Into 4 O at 5 V (10% THD+N)

880 mW Into 8 O 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:
0.2 µA

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 WCSP (YZF)

APPLICATIONS

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