Description

The TPA2026D2 device is a stereo, filter-free Class-D audio power amplifier with volume control, dynamic range compression (DRC), and automatic gain control (AGC). It is available in a 2.2 mm × 2.2 mm DSBGA package. The DRC and AGC function in the TPA2026D2 is programmable through a digital I 2C interface. The DRC and AGC function can be configured to automatically prevent distortion of the audio signal and enhance quiet passages that are normally not heard. The DRC and 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 0 dB to +30 dB in 1-dB steps. The TPA2026D2 is capable of driving 3.2 W/Ch at 5 V into an 4-Ω load or 750 mW/Ch at 3.6 V into an 8-Ω load. The device features independent software shutdown controls for each channel and also provides thermal and short-circuit protection. The TPA2026D2 has faster AGC gain ramp during start-up than TPA2016D2. In addition to these features, a fast start-up time and small package size make the TPA2026D2 an ideal choice for cellular handsets, PDAs, and other portable applications.

Features

Fast AGC Start-Up Time: 5 ms

Pinout Compatible With TPA2016D2

Filter-Free Class-D Architecture

3.2 W/Ch Into 4 Ω at 5 V (10% THD+N)

750 mW/Ch Into 8 Ω at 3.6 V (10% THD+N)

Power Supply Range: 2.5 V to 5.5 V

Flexible Operation With or Without I 2C

Programmable DRC and AGC Parameters

Digital I 2C Volume Control

Selectable Gain from 0 dB to 30 dB in 1-dB Steps

Selectable Attack, Release, and Hold Times

4 Selectable Compression Ratios

Low Supply Current: 3.5 mA

Low Shutdown Current: 0.2 μA

High PSRR: 80 dB

AGC Enable or Disable Function