MOSA
MS6715
1 Stereo Input / 1 Stereo Output Audio Processor
1 Stereo Input and 1 Stereo Output
Volume, Tone, Balance, Loudness Function
FEATURES
•Operation
range : 2.7V~6.5V
•2
independent speaker controls for balance
•Tone
controls (treble and bass)
•Loudness
and independent mute function
•Volume
control in 1.25 dB/step
•I
2
C interface
•Components
less and good PSRR
•Housed
in SOP20, SSOP20 package
APPLICATIONS
•Portable
audio device
•Hi-Fi
audio system
•Cross-reference:
TDA7315
DESCRIPTION
The MS6715 is a 1 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 MS6715 also
has the loudness function. These functions can be built a Hi-Fi audio system easily. All functions are programmable
via the serial I
2
C 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 bass and the treble are 0dB.
BLOCK DIAGRAM
LOUD_L
9
BOUT_L BIN_L
13
12
TREB_L
4
R
B
Mute
LIN
11
Volume &
Londness
17 OUT_L
Bass
Treble
Speaker
ATT
20
Serial Bus Decoder and Latches
SCL
19 SDA
18
DGND
Speaker
ATT
RIN
6
Volume &
Londness
Bass
Treble
16
OUT_R
Mute
R
B
Supply
2
3
1
7
LOUD_R
15
14
5
TREB_R
AVDD AGND REF
BOUT_R BIN_R
REV 3
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MOSA
PIN CONFIGURATION
Symbol
REF
VDD
AGND
TREB_L
TREB_R
RIN
LOUD_R
NC
LOUD_L
NC
LIN
BIN_L
BOUT_L
BIN_R
BOUT_R
OUT_R
OUT_L
DGND
SDA
SCL
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Description
Analog Reference Voltage（1/2VDD）
Supply Input Voltage
Analog Ground
Left Channel Input for Treble Controller
Right Channel Input for Treble Controller
Right Channel Input
Right Channel Loudness Input
No Connected
Left Channel Loudness Input
No Connected
Left Channel Input
Left Bass Controller Input Channel
Left Bass Controller Output Channel
Right Bass Controller Input Channel
Right Bass Controller Output Channel
Right Speaker Output
Left Speaker Output
Digital Ground
I
2
C Data Input
I
2
C Clock Input
MS6715
1 Stereo Input / 1 Stereo Output Audio Processor
REF
1
VDD
2
AGND
3
TREB_L
4
TREB_R
5
20
SCL
19
SDA
18
DGND
17
OUT_L
MS6715
RIN
6
LOUD_R
7
NC
8
LOUD_L
9
NC
10
16
OUT_R
15
BOUT_R
14
BIN_R
13
BOUT_L
12
BIN_L
11
LIN
SOP20 / SSOP20
ORDERING INFORMATION
Package
20-Pin SOP (lead free)
20-Pin SOP (lead free)
20-Pin SSOP (lead free)
20-Pin SSOP (lead free)
Part number
MS6715GTR
MS6715GU
MS6715SSGTR
MS6715SSGU
Packaging Marking
MS6715G
MS6715G
MS6715G
MS6715G
Transport Media
1k Units Tape and Reel
36 Units Tube
2.5k Units Tape and Reel
56 Units Tube
ABSOLUTE MAXIMUM RATINGS
Symbol
V
DD
V
ESD
T
STG
T
A
T
J
T
S
R
THJA
Supply Voltage
Electrostatic Handling
Storage Temperature Range
Operating Ambient Temperature Range
Maximum Junction Temperature
Soldering Temperature, 10 seconds
Thermal Resistance from Junction to Ambient in Free Air
SOP20
SSOP20
Parameter
Rating
6.5
-3000 to 3000
-65 to 150
-40 to 85
150
260
210
210
Unit
V
V
℃
℃
℃
℃
℃/W
REV 3
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MOSA
OPERATING RATINGS
Symbol
V
DD
Supply Voltage
Parameter
MS6715
1 Stereo Input / 1 Stereo Output Audio Processor
Min
2.7
Typ
-
Max
6.5
Unit
V
5V ELECTRICAL CHARACTERISTICS
(Ta=25℃, All stages 0dB, f=1kHz, C
REF
=22uF, refer to the application circuit; unless otherwise specified)
Symbol
Supply
I
Q
PSRR
Input
R
IN
LOUD
Input Resistance
Loudness
C
Loud
=100nF, f =20Hz
Volume=-40dB
Attenuation
Av = 0 to -40dB
Av = -40 to -60dB
Attenuation
35
19
50
20
70
-
kΩ
dB
Quiescent Current
Power Supply Rejection Ratio
V
IN
=0V
C
REF
= 22uF, f = 100Hz
-
55
12.2
60
12.5
-
mA
dB
Parameter
Conditions
Min
Typ
Max
Unit
Volume control
CR
VOL
RES
VOL
ERR
VOL
Volume Control Range
Volume Step Resolution
Volume Setting Error
-78.75
-
-0.5
-1
-37.5
-
-0.2
-
Boost/Cut
f =100Hz
-14
-
-0.3
34
Boost/Cut
f =20kHz
(THD+N)/S <0.3%
V
OUT
=2Vpp
V
OUT
=4Vpp
-14
-
-0.3
-
-
-
-
93
2
-
-
1.25
0
0
-
1.25
0
-65
-
2
0
44
-
2
0
4.5
-75
0.0177
97
97
-
-
0
-
1
5
0
-
0.1
-60
14
-
0.1
58
14
-
0.1
-
-
-
-
-
-
0.8
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
kΩ
dB
dB
dB
Vpp
dB
%
dB
dB
V
V
Speaker Attenuators
CR
SPK
RES
SPK
ERR
SPK
MUTE
CR
BAS
RES
BAS
ERR
BAS
R
B
CR
BAS
RES
BAS
ERR
BAS
General
VO
MAX
THD+N
S/N
CS
Bus Input
V
IH
V
IL
Bus High Input Level
Bus Low Input Level
Maximum Output Voltage Swing
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Channel Separation Left/Right
Speaker Control Range
Speaker Step Resolution
Speaker Setting Error
Output Mute Attenuation
Bass Control Range
Bass Step Resolution
Speaker Setting Error
Internal Feedback Resistance
Treble Control Range
Treble Step Resolution
Treble Setting Error
Bass Control
Treble Control
Notes: Bass and Treble response see to curve. The center frequency and quality of the response behavior can be chosen
by the external.
REV 3
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MOSA
2.7V ELECTRICAL CHARACTERISTICS
Symbol
Supply
I
Q
PSRR
General
VO
MAX
THD+N
S/N
CS
Maximum Output Voltage Swing
Total Harmonic Distortion Plus
Noise
Signal-to-Noise Ratio
Channel Separation Left/Right
(THD+N)/S <0.3%
V
OUT
=2Vpp
V
OUT
=2.5Vpp
Quiescent Current
Power Supply Rejection Ratio
V
IN
=0V
Parameter
Conditions
MS6715
1 Stereo Input / 1 Stereo Output Audio Processor
(Ta=25℃, All stages 0dB, f=1kHz, C
REF
=22uF, refer to the application circuit; unless otherwise specified)
Min
-
53
-
-
-
90
90
Typ
8.7
58
2.5
-50
0.3
94
94
Max
9
-
-
-
-
-
-
Unit
mA
dB
Vpp
dB
%
dB
dB
C
REF
= 22uF, f = 100Hz
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25℃, All stages 0dB, f=1kHz, C
REF
=22uF, refer to the application circuit; unless otherwise specified)
V
DD
=5V
V
DD
=5V
Volume=-40dB
100nF
33nF
OPEN
Loud (dB)
Loud (dB)
Loud (dB)
10nF
220nF
Loudness OFF
V
DD
=5V
C
LOUD
= 100nF
56nF
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
Loudness vs. Volume
Loudness vs. Frequency vs. Volume
Loudness vs. External Capacitors
CHANNEL SEPARATION (dB)
V
DD
=2.7V
V
IN
=-3dBV
V
DD
=5V
V
IN
=0dBV
V
DD
=5V
Treble=Bass= -14~14dB
FREQUENCY (Hz)
FREQUENCY (Hz)
QUIESCENT CURRENT (mA)
Tone (dB)
SUPPLY VOLTAGE (V)
Typical Tone Response
Channel Separation vs. Frequency
Quiescent Current vs. Supply Voltage
REV 3
4/16
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MOSA
MS6715
1 Stereo Input / 1 Stereo Output Audio Processor
V
DD
=2.7V
V
O
=2Vpp
f=1kHz
THD+N (%)
f=20kHz
THD+N (%)
THD+N (%)
f=20Hz
f=20kHz
f=20Hz
V
DD
=5V
V
O
=2Vpp
V
DD
=5V
f=1kHz
V
DD
=2.7V
FREQUENCY (Hz)
OUTPUT VOLTAGE (dBV)
OUTPUT VOLTAGE (dBV)
THD+N vs. Frequency
THD+N vs. Output Voltage
THD+N vs. Output Voltage
CAP=22uF
CAP=22uF
PSRR (dB)
CAP=10uF
PSRR (dB)
CAP=10uF
V
DD
=5V
V
RR
=-20dBV
V
DD
=2.7V
V
RR
=-20dBV
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR vs. Frequency
PSRR vs. Frequency
REV 3
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