MS6821 Datasheet, PDF (1/26 Pages) MOSA ELECTRONICS – 4 Stereo Inputs, 2W BTL Stereo Output 16-bit Stereo DAC and Volume Control

MOSA
MS6821
4 Stereo inputs / 2W PA output integrated Audio DAC and Volume Control
4 Stereo Inputs, 2W BTL Stereo Output
16-bit Stereo DAC and Volume Control
FEATURES
•Operation range: 2.4V~5.5V
•Volume control range
Gain: 0 to 21dB, 3dB/step
Attenuation: 0 to –77.5dB, 1.25dB/step
•4 stereo inputs (mixed with an audio DAC)
•Output mode : Speaker( BTL)/Headphone(SE)
•BTL Output power, THD+N=1%, Stereo Input
R_L=4Ω, 2W at 5V, 0.8W at 3.3V, 360mW at 2.4V
R_L=8Ω, 1.3W at 5V, 0.53W at 3.3V, 250mW at 2.4V
•BTL Output power, DAC Input
R_L=4Ω, 1.6W at 5V, 0.70W at 3.3V, 340mW at 2.4V
R_L=8Ω, 0.83W at 5V, 0.35W at 3.3V, 170mW at 2.4V
•Built-in 16-bit Audio DAC
•Audio format : I²S, Right justified, Left justified
•Control interface : I²C
•Excellent Power Supply Rejection Ratio(PSRR)
•Flexibility power management
•Component less
•Reduce pop noise circuit
•Housed in TSSOP28 package, enhanced thermal
PAD
APPLICATIONS
Multimedia system, Portable Digital Audio.
DESCRIPTION
The MS6821 is a 16-bits voltage-output Digital-to-Analog Converter (DAC) integrated class AB stereo headphone
driver and stereo speaker power amplifier. It can drive 2W of continuous average power into a dual 4Ω bridged-tied
(BTL) speaker or 2 * 90mW into stereo 32Ω single ended (SE) headphone. The 16-bit DAC supports general and
popular formats as I2S, Right justified. The volume control offers wide range of gain and attenuation for 4-set stereo
input. All of the functions are set by I2C interface.
The MS6821 has good feature for portable equipment, including wide voltage operation 2.4V~5.5V, low power
consumption, flexible power management, component less and small package TSSOP28, make the MS6821 ideally
suitable for use in the portable digital audio equipments.
BLOCK DIAGRAM
LIN1
LIN2
LIN3
LIN4
RIN4
RIN3
RIN2
RIN1
L-ch selector
& Gain
Attenuation
&
Mute
R-ch selector
& Gain
Attenuation
&
Mute
Mixer
Mixer
REV 1.0
BCK
WS
DATA
16-bit DAC
Supply
I²C
Interface
VDD
Vss CAP
DACL / DACR /
LINE_INL LINE_INR
SCL SDA
1
-1
-1
-1
-1
OUTR-
OUTR+
OUTL-
OUTL+
Power Amplifier
Supply
PV_DDL PV_SSL PV_DDR PV_SSR
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