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ESMT
Features
16/18/20/24-bit input with I S, Left-alignment and Right-alignment data format PSNR & DR(A-weighting) Loudspeaker: 93dB (PSNR), 98dB (DR) Headphone: 87dB (PSNR), 91dB (DR) Multiple sampling frequencies (Fs) 32kHz / 44.1kHz / 48kHz and 64kHz / 88.2kHz / 96kHz 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 Supply voltage 3.0~12V for loudspeaker driver 3.0~3.3V for others Loudspeaker output power ( @10% THD+N) 2x8.7W(Full,8)+16.7W(Full, 4) for 2.1-channel 2x4.3W(Half,4)+16.7W(Full, 4) for 2.1-channel 2x8.7W(Full,8) for stereo 2x4.3W(Half,4) for stereo 2x16.7W(Full, 4) for stereo Headphone power 34mW into 32@1kHz and 1% THD+N 65mW into 16@1kHz and 1% THD+N 110mW into 8@1kHz and 1% THD+N 200mW into 4@1kHz and 1% THD+N Sound processing including Bass (+18dB~-12dB, 3dB frequency is 250Hz), Treble (+18dB~-12dB, 3dB frequency is 7kHz), 5 bands parametric EQ, Volume control (+24dB~-103dB, 1dB/step) and
2
AD8356A
2.1-Channel Digital Audio Amplifier with Headphone Driver
Dynamic range control Anti-pop design Over-temperature protection Under-voltage shutdown Short-circuit protection I2C control interface
Applications
CD and DVD TV audio Car audio Boom-box MP3 docking systems Portable / Handheld Powered speaker Wireless audio USB speaker
Description
This is a 2.1-channel fully digital audio amplifier with output power which can deliver up to 2x8.7W to 8 load for L,R channel and 16.7W to 4 load for sub-woofer channel simultaneously with 12V supply voltage. Using I2C digital control interface, AD8356A provides sound processing includes Volume, Bass, Treble, EQ, Mixing and Dynamic Range Control (DRC). Users can use one AD8356A for stereo or 2.1-channel, two for 5.1-channel and three for 7.1-channel, respectively.
ORDERING INFORMATION
Product Number AD8356A-KG AD8356A-LEG Package 7x7 48L QFN 7x7 48L E-LQFP Comments Pb-free Pb-free
Elite Semiconductor Memory Technology Inc.
Publication Date: May. 2007 Revision: 1.3 1/33
ESMT
Pin Assignment
AD8356A
MCLK PLLGND PLLVDD CLK_OUT DVDD MO DGND M1 SDATA0 SDATA1 SDATA2 LRCIN
1 2 3 4 5 6 7 8 9 10 11 12
36 35 34 33 32 31 30 29 28 27 26 25
HPL HPR AGND AVDD PWMSA DEF SDA SCL SA1 SA0 ERROR PD
Pin Description
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 NAME MCLK PLLGND PLLVDD CLK_OUT DVDD M0 DGND M1 SDATA0 SDATA1 SDATA2 LRCIN BCLK VDDSLB SLB GNDSL SLA VDDSLA VDDSRA
TYPE
DESCRIPTION Master clock input Ground for PLL Supply for PLL PLL output Digital Power Mode selection 0 Digital Ground Mode selection 1 Serial audio data input 0 Serial audio data input 1 Serial audio data input 2 Left/Right clock input (Fs) Bit clock input (64Fs) Supply for subwoofer-left channel B Subwoofer-left channel output (-) Ground for subwoofer-left channel Subwoofer-left channel output (+) Supply for subwoofer-left channel A Supply for subwoofer-right channel A
CHARACTERISTICS Schmitt trigger TTL input buffer
I P P O P I P I I I I I I P O P O P P
(Note1) TTL output buffer (Note1) Schmitt trigger TTL input buffer
Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer (Note2)
(Note2) (Note2)
Elite Semiconductor Memory Technology Inc.
Publication Date: May. 2007 Revision: 1.3 2/33
ESMT
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 SRA GNDSR SRB VDDSRB
Re set
PD
AD8356A
O P O P I I O I I I I I O P P O O I P O P O P P O P O P I
2
Subwoofer-right channel output (+) Ground for subwoofer-right channel Subwoofer-right channel output (-) Supply for subwoofer-right channel B Reset, low active Power down, low active ERROR output I C select address 0 I2C select address 1 I C serial clock input I2C serial data input Default volume, 0=Mute, 1=Un-Mute Half-bridge, sub-woofer channel output Analog supply Analog ground Headphone right channel output Headphone left channel output Headphone detection Supply for right channel B Right channel output (-) Ground for Right channel Right channel output (+) Supply for right channel A Supply for left channel A Left channel output (+) Ground for left channel Left channel output (-) Supply for left channel B PLL Bypass (Note2) Schmitt trigger TTL input buffer (Note2) (Note2) (Note2)
2
(Note2) Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Open-drain output Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer with open-drain output Schmitt trigger TTL input buffer TTL output buffer (Note1)
ERROR
SA0 SA1 SCL SDA DEF PWMSA AVDD AGND HPR HPL HP-SPK VDDRB RB GNDR RA VDDRA VDDLA LA GNDL LB VDDLB PLL_Byp
Note1These pins provide the supply for digital PWM controller, headphone drivers, built-in PLL and protection circuits except for loudspeaker short-circuit protection circuits. Note2These pins provide the supply for loudspeaker driver stages, which are known as "PVDD".
Elite Semiconductor Memory Technology Inc.
Publication Date: May. 2007 Revision: 1.3 3/33
ESMT
Functional Block Diagram
AD8356A
Available Package
Package Type 7x7 48L QFN 7x7 48L E-LQFP Device No. AD8356A ja(/W) 23.5 23.8 jt(/W) 1.6 1.8 jc(/W) 12.5 15.8 Exposed Thermal Pad Yes (Note3)
Note3The thermal pad is at the bottom of package. To optimize the performance of thermal dissipation, solder the thermal pad to PCB's ground plane is suggested.
Elite Semiconductor Memory Technology Inc.
Publication Date: May. 2007 Revision: 1.3 4/33

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