IS31AP2111 Datasheet, PDF (1/31 Pages) Integrated Silicon Solution, Inc – 2×20W STEREO DIGITAL AUDIO AMPLIFIER

IS31AP2111
2×20W STEREO DIGITAL AUDIO AMPLIFIER
WITH 20 BANDS EQ FUNCTIONS
Preliminary Information
September 2014
GENERAL DESCRIPTION
IS31AP2111 is a digital audio amplifier capable of
driving a pair of 8Ω, 20W operating at 24V supply
without external heat-sink or fan requirement with play
music.
IS31AP2111 can provide 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
IS31AP2111 from damage due to accidental
erroneous operating condition. IS31AP2111 is more
tolerant to noise and PVT (Process, Voltage, and
Temperature) variation than the analog Class-AB or
Class-D audio amplifier counterpart implemented by
analog circuit design. IS31AP2111 is pop free during
instantaneous power switch because of its built-in,
robust anti-pop circuit.
APPLICATIONS
• TV audio
• Boom-box, CD and DVD receiver, docking system
• Powered speaker
• Wireless audio
FEATURES
• 16/18/20/24-bits input with I2S, Left-alignment and
Right-alignment data format
• PSNR & DR (A-weighting)
Loudspeaker: 99dB (PSNR), 104dB (DR) @24V
• Multiple sampling frequencies (F_S)
- 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~1024x F_S for 32kHz / 44.1kHz / 48kHz
- 64x~512x F_S for 64kHz / 88.2kHz / 96kHz
- 64x~256x F_S for 128kHz / 176.4kHz / 192kHz
• Supply voltage
- 3.3V for digital circuit
- 10V~26V for loudspeaker driver
• Loudspeaker output power for at 24V
- 10W × 2CH into 8Ω @0.24% THD+N for stereo
- 20W × 2CH into 8Ω @0.38% THD+N for stereo
• Sound processing 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
Integrated Silicon Solution, Inc. – www.issi.com
1
Rev. 0A, 09/10/2014