JAJSOU4C November 2011 – June 2022 TPA2015D1
PRODUCTION DATA
Limiter level | The maximum output voltage allowed before amplifier gain is automatically reduced. |
SpeakerGuard™ | TI's trademark name for the automatic gain control technology. It protects speakers by limiting maximum output power. |
Inflection point | The battery voltage threshold for reducing the limiter level. If the battery voltage drops below the inflection point, the limiter level automatically reduces. Although it lowers the maximum output power, it prevents high battery currents at end-of-charge low battery voltages. |
Battery track | The name for the continuous limiter level reduction at battery voltages below the inflection point. |
AGC | Automatic gain control. |
VBAT | The battery supply voltage to the TPA2015D1. The VBAT pin is the input to the boost converter. |
Fixed-gain | The nominal audio gain as set by the GAIN pin. If the audio output voltage remains below the limiter level, the amplifier gain will return to the fixed-gain. |
Attack time | The rate of AGC gain decrease. The attack time is constant at 0.026 ms/dB. |
Release time | The rate of AGC gain increase. The release time is constant at 1600 ms/dB. |