MS6720 Datasheet, PDF (1/12 Pages) MOSA ELECTRONICS – 3 Stereo Inputs and 4-Channel Outputs Volume, Balance, Fader and Selectable Input Gain

MOSA
MS6720
3 Stereo Inputs / 4-Channel Outputs Audio Processor
3 Stereo Inputs and 4-Channel Outputs
Volume, Balance, Fader and Selectable Input
Gain
FEATURES
•Operation range : 2.7V~5V
•3 stereo inputs with selectable input gain
•4 independent speaker controls for fader and balance
•Independent mute function
•Volume control in 1.25 dB/step
•I²C interface
•Components less and good PSRR
•Housed in SOP20, SSOP20 packages
APPLICATIONS
•Portable audio device
•Car stereo audio
•Hi-Fi audio system
•Cross-reference:
PT2313L-20
DESCRIPTION
The MS6720 is a 3 stereo inputs/4-channel outputs digital control audio processor for the low voltage operation.
Volume, balance (left/right), and fader (front/rear) processor are incorporated into a single chip. The MS6720 also has
selectable input gain. All functions are programmable via the serial I²C bus. The default states of the chip as the power
is on are: the volume is -78.75dB, the stereo 4 is selected, all the speakers are mute and the gains of the input stage are
0dB. The stereo 4 is connected internally, but not available on pins.
BLOCK DIAGRAM
LOUT
13
LIN
12
Speaker
ATT
LIN1 ¹¹
LIN2 ¹⁰
LIN3 ⁹
RIN3 ⁶
RIN2 ⁷
RIN1 ⁸
Input
Selector
&Gain
Control
Supply
Volume
Mute
Speaker
ATT
Mute
Serial Bus Decoder and Latches
Volume
Speaker
ATT
Mute
Speaker
ATT
Mute
231
5
4
AVDD AGND REF ROUT RIN
17 _{OUT_LF}
15 _{OUT_LR}
20 _SCL
19 _SDA
18
DGND
16
OUT_RF
14 _{OUT_RR}
REV1.0
1
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