Описание
The IS31AP2111 is a digital I2S interface audio amplifier capable of driving a pair of 8? speakers at 20W when operating from a 24V supply. Due to its Class-D output drive stage; it can operate without an external heat-sink or fan. The IS31AP2111 integrates advanced audio processing capabilities, such as volume control, 20 bands speaker EQ, audio mixing, 3D surround and Dynamic Range Control (DRC). These functions are fully programmable via a simple I2C control interface. Robust protection circuits are provided to protect the IS31AP2111 from damage due to accidental or erroneous operating conditions. Because of its digital design, the IS31AP2111 is more tolerant to noise and PVT (Process, Voltage, and Temperature) variation than the analog Class-AB or Class-D audio amplifier counterpart. It has a robust anti-pop circuit for pop free operation during power ON. It integrates protection features for short circuit and over temperature. The IS31AP2111 is available in a thermally enhanced eTSSOP-24 package.
- 16/18/20/24-bits input with I2S, Left-alignment and
- Right-alignment data format PSNR
- and DR (A-weighting) speaker: 99dB (PSNR), 104dB (DR) @24V
- Multiple sampling frequencies (FS)
- 32kHz / 44.1kHz / 48kHz and
- 64kHz / 88.2kHz / 96kHz and
- 128kHz / 176.4kHz / 192kHz
- System Clock = 64x, 128x, 192x, 256x, 384x, 512x, 576x, 768x, 1024x Fs
- 64x to 1024x Fs for 32kHz / 44.1kHz / 48kHz
- 64x to 512x Fs for 64kHz / 88.2kHz / 96kHz
- 64x to 256x Fs for 128kHz / 176.4kHz / 192kHz
- Supply voltage
- 3.3V for digital circuit
- 10V to 26V for speaker driver
- Speaker output power at 24V
- 10W × 2CH into 8? @0.24% THD+N for stereo
- 20W × 2CH into 8? @0.38% THD+N for stereo
- 40W × 1CH into 4? @0.12% THD+N for mono
- Sound pr°Cessing including:
- 20 bands parametric speaker EQ
- Volume control (+24dB – -103dB, 0.125dB/step)
- Dynamic range control (DRC)
- Dual band dynamic range control
- Power clipping
- 3D surround sound
- Channel mixing
- Noise gate with hysteresis window
- Bass/Treble tone control – DC-blocking high-pass filter
- Anti-pop design
- Short circuit and over-temperature protection
- I2C control interface with selectable device
- address Support hardware and software reset
- Internal PLL
- LV Under-voltage shutdown and HV Under-voltage
- detection Power saving mode
