MS6714_1 Datasheet, PDF (1/18 Pages) MOSA ELECTRONICS – 4 Stereo Inputs and 1 Stereo Output Volume, Tone, Balance, Loudness and Selectable Input Gain

MOSA
MS6714
4 Stereo Inputs / 1 Stereo Output Audio Processor
4 Stereo Inputs and 1 Stereo Output
Volume, Tone, Balance, Loudness and
Selectable Input Gain
FEATURES
•Operation range : 2.7V~6.5V
•4 stereo inputs with selectable input gain
•2 independent speaker controls for balance
•Tone controls (treble and bass)
•Loudness and independent mute function
•Volume control in 1.25 dB/step
•I²C interface
•Components less and good PSRR
•Housed in SOP28, SSOP28 package
APPLICATIONS
•Portable audio device
•Car stereo audio
•Hi-Fi audio system
DESCRIPTION
The MS6714 is a 4 stereo inputs/2-channel outputs digital control audio processor for the low voltage operation.
Volume, tone (bass and treble), and balance (left/right) processor are incorporated into a single chip. The MS6714 also
has the loudness function and selectable input gain. These functions can be built a Hi-Fi audio system easily. 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, the bass and the treble are
0dB.
BLOCK DIAGRAM
LOUT
18
LIN LOUD_L BOUT_L BIN_L
17 12
20
19
TREB_L
3
LIN1 ¹⁶
LIN2 ¹⁵
LIN3 ¹⁴
LIN4 ¹³
RIN4 ⁸
RIN3 ⁹
RIN2 ¹⁰
RIN1 ¹¹
Input
Selector
& Gain
Control
Volume &
Londness
R_B
Bass
Treble
Serial Bus Decoder and Latches
Volume &
Londness
Bass
Treble
Supply
R_B
1
2
28 6
AVDD AGND REF ROUT
5
7
22
21
RIN LOUD_R BOUT_R BIN_R
4
TREB_R
Mute
Speaker
ATT
Speaker
ATT
Mute
24 _{OUT_L}
27 _SCL
26 _SDA
25
DGND
23
OUT_R
REV 3
1/18
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