1 Features 3 Description 1• Fast AGC Start-up Time: 5 ms The TPA2028D1 device is a mono, filter-free Class-D audio power amplifier with volume control, fast gain • Pinout Compatible with TPA2018D1 ramp SmartGain™, dynamic range compression • Filter-Free Class-D Architecture (DRC), and automatic gain control (AGC). It is • 3 W Into 4 Ω at 5 V (10% THD+N) available in a 1.63 mm × 1.63 mm wafer chip-scale package (DSBGA). • 880 mW Into 8 Ω at 3.6 V (10% THD+N) • Power Supply Range: 2.5 V to 5.5 V The DRC/AGC function in the TPA2028D1 device is programmable through a digital I 2C interface. The • Flexible Operation With/Without I 2C™ DRC/AGC function can be configured to automatically • Programmable DRC/AGC Parameters prevent distortion of the audio signal and enhance • Digital I quiet passages that are normally not heard. The 2C™ Volume Control DRC/AGC can also be configured to protect the • Selectable Gain from –28 dB to 30 dB in 1-dB speaker from damage at high power levels and Steps (when compression is used) compress the dynamic range of music to fit within the • Selectable Attack, Release and Hold Times dynamic range of the speaker. The gain can be • 4 Selectable Compression Ratios selected from –28 dB to +30 dB in 1-dB steps. The TPA2028D1 is capable of driving 3 W at 5 V into a • Low Supply Current: 1.8 mA 4-Ω load or 880 mW at 3.6 V into an 8-Ω load. The • Low Shutdown Current: 0.2 μA device features hardware and software shutdown • High PSRR: 80 dB controls and also provides thermal and short-circuit • AGC Enable/Disable Function protection. The TPA2028D1 has a faster AGC gain ramp during start-up than TPA2018D1. • Limiter Enable/Disable Function • Short-Circuit and Thermal Protection In addition to these features, a fast start-up time and small package size make the TPA2028D1 an ideal • Space-Saving Package choice for cellular handsets, PDAs and other portable – 1.63 mm × 1.63 mm Nano-Free™ DSBGA applications. (YZF) Device Information(1) 2 Applications PART NUMBER PACKAGE BODY SIZE (NOM) • Wireless or Cellular Handsets and PDAs TPA2028D1 DSBGA (9) 1.63 mm x 1.63 mm • Portable Navigation Devices (1) For all available packages, see the orderable addendum at the end of the data sheet. • Portable DVD Player • Notebook PCs Simplified Application Diagram • Portable Radio • Portable Games • Educational Toys • USB Speakers