AUDIO AMPLIFIER. IS31AP2121 Datasheet

IS31AP2121 AMPLIFIER. Datasheet pdf. Equivalent

IS31AP2121 Datasheet
Recommendation IS31AP2121 Datasheet
Part IS31AP2121
Description 2×25W STEREO / 1× 50W MONO DIGITAL AUDIO AMPLIFIER
Feature IS31AP2121; IS31AP2121 2×25W STEREO / 1× 50W MONO DIGITAL AUDIO AMPLIFIER WITH 20 BANDS EQ FUNCTIONS, DRC AND 2..
Manufacture ISSI
Datasheet
Download IS31AP2121 Datasheet





ISSI IS31AP2121
IS31AP2121
2×25W STEREO / 1× 50W MONO DIGITAL AUDIO AMPLIFIER
WITH 20 BANDS EQ FUNCTIONS, DRC AND 2.1CH MODE
October 2015
GENERAL DESCRIPTION
The IS31AP2121 is a digital audio amplifier capable of
driving 25W (BTL) each to a pair of 8speakers and
50W (PBTL) to a 4speaker operating at 24V supply
without external heat-sink or fan. The IS31AP2121 is
also capable of driving 4, 12W (SE)×2 + 8, 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
FEATURES
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 8@0.16% THD+N for stereo
- 15W × 2CH into 8@0.19% THD+N for stereo
- 25W × 2CH into 8@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
Internal PLL
LV Under-voltage shutdown and HV Under-voltage
detection
Power saving mode
Integrated Silicon Solution, Inc. – www.issi.com
Rev. C, 10/20/2015
1



ISSI IS31AP2121
IS31AP2121
TYPICAL APPLICATION CIRCUIT
Figure 1 Typical Application Circuit (For Stereo)
Micro
Controller
Digital
Audio
Source
VCC
2
470 F
VDD
3,44
0.1 F 0.1 F
47
48
VCCLA
VCCLB
GNDL
VCCRA
VCCRB
GNDR
35
34,41
VCC
37
38 0.1 F 0.1 F
470 F
1M 1M 4.7k 4.7k
1F 1F
8
PBTL
23 13,27
SDA
DVDD
24 9,28
SCL DGND
25
19 RSTB IS31AP2121
PDB
1
OUTLA
14 46
ERRORB
OUTLB
VDD OUTLA
0.1 F
OUTLB
OUTRA
15
MCLK
21
BCLK
20
LRCIN
22
SDATA
39
OUTRA
36
OUTRB
OUTRB
BEAD
470pF
10
10
470pF BEAD
BEAD
470pF
10
10
470pF BEAD
Figure 2 Typical Application Circuit (For Mono)
*Note 4
15 H
6A
*Note 2
100nF
220nF
*Note 4
15 H
6A
100nF
1nF
1nF
Speaker
4
Pin
Logic
0
PDB
RSTB
PBTL
Power Down
Reset
Stereo
1
Normal
Normal
Mono
Integrated Silicon Solution, Inc. – www.issi.com
Rev. C, 10/20/2015
2



ISSI IS31AP2121
IS31AP2121
Figure 3 Typical Application Circuit (For 2.1CH) (Note 5)
Pin
Logic
0
PDB
RSTB
PBTL
Power Down
Reset
X
1
Normal
Normal
X
Note 1: When concerning about short-circuit protection or performance, it is suggested using the choke with its IDC larger than 7A.
Note 2: These capacitors should be placed as close to speaker jack as possible, and their values should be determined according to EMI test
results.
Note 3: The snubber circuit can be removed while the VCC 20V.
Note 4: When concerning about short-circuit protection or performance, it is suggested using the choke with its IDC larger than 14A.
Note 5: 2.1CH configuration, it programs by I2C via register address 0x11, D4 bit SEM.
Integrated Silicon Solution, Inc. – www.issi.com
Rev. C, 10/20/2015
3





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