IS31AP2121

THD+N	0.20%
Status	Prod
Vdd(V)	10~26
ICC(mA)
ISD(uA)
Channels	2
Document	Eval Board
PSRR(dB)	-76
Power(W)	25Wx2, 10W x 2 + 20W
Pkg-Pin(mm)	eLQFP-48
Product Family	31 = Commercial/Industrial Analog
Part Number	2121 = 2121
Product Type	AP = Audio Power Amplifier
Package option	blank = Tray or Tube

IS31AP2121 Features

TV audio
Boom-box, CD and DVD receiver, docking system
Powered speaker
Wireless audio
16/18/20/24-bits input with I2S, Left-alignment and Right-alignment data format
PSNR & DR (A-weighting) Loudspeaker: 104dB (PSNR), 110dB (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~1024x FS for 32kHz / 44.1kHz / 48kHz - 64x~512x FS for 64kHz / 88.2kHz / 96kHz - 64x~256x FS for 128kHz / 176.4kHz / 192kHz
Supply voltage
- 3.3V for digital circuit - 10V~26V for speaker driver
Supports 2.0CH/2.1CH/Mono configuration
Loudspeaker output power for at 24V
- 10W × 2CH into 8Ω @0.16% THD+N for stereo - 15W × 2CH into 8Ω @0.19% THD+N for stereo - 25W × 2CH into 8Ω @0.3% 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 - Bass management crossover filter - DC-blocking high-pass filter
Anti-pop design
Short circuit and over-temperature protection
Supports I2C control without MCLK
I2C control interface with selectable device address
Support BCLK system
Support hardware and software reset
LV Under-voltage shutdown and HV Under-voltage Internal PLL detection

Overview

The IS31AP2121 is a digital audio amplifier capable of driving 25W (BTL) each to a pair of 8Ω speakers and 50W (PBTL) to a 4Ω speaker operating at 24V supply without external heat-sink or fan. The IS31AP2121 is also capable of driving 4Ω, 12W (SE)×2 + 8Ω, 25W (BTL)×1 at 24V supply for 2.1CH application. The IS31AP2121 can provide advanced audio processing functions, such as volume control, 20 EQ bands, audio mixing, 3D surround sound and Dynamic Range Control (DRC). These are fully programmable via a simple I2C control interface. Robust protection circuits are provided to protect the IS31AP2121 from damage due to accidental erroneous operating condition. The full digital circuit design of IS31AP2121 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. IS31AP2121 is pop free during instantaneous power on/off or mute/shut down switching because of its robust built-in anti-pop circuit. APPLICATIONS , TV audio , Boom-box, CD and DVD receiver, docking system , Powered speaker , Wireless audio.

IS31AP2121 Features

Overview

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