MO
SA
MS6258
Gain And Attenuation Volume Controller IC
REV 1
1
www.mosanalog.com.tw
Gain and Attenuation Volume Controller IC
4 Sets of Stereo Input, Low voltage
Gain and Attenuation 15~-79dB
FEATURES
Operation range: 2.7V~5.5V
Low power consumption
Gain/Attenuation: 15dB to 79dB at 1dB/step
Good PSRR and low pop noise
I
2
C interface
Housed in 16 pin SOP, SSOP package
APPLICATIONS
Multimedia system
Hi-Fi audio system
MP3, PDA
LCD Monitor
DESCRIPTION
The MS6258 is a stereo audio volume controller IC with 4 sets of stereo input. It uses CMOS technology specially for
the low voltage application with low noise, rail-to-rail output. The MS6258 provide an I
2
C control interface with gain /
attenuation range of 15dB to -79dB, 1dB/step. The initial condition is set to be maximum attenuation 79dB and mute
on mode when the power on.
PIN CONFIGURATION
Symbol
Pin
Description
A.O.
1
Address option *
L-IN4 2
4
th
left channel input
L-IN3 3
3
rd
left channel input
L-IN2 4
2
nd
left channel input
L-IN1 5
1
st
left channel input
L-OUT
6
Left channel output
V
SS
7 Ground
SDA 8
I
2
C data input
SCL 9
I
2
C clock input
V
DD
10
Positive supply voltage
R-OUT
11
Right channel output
R-IN1 12
1
st
right channel input
R-IN2 13
2
nd
right channel input
R-IN3 14
3
rd
right channel input
R-IN4 15
4
th
right channel input
V
REF
16
Reference voltage = 1/2V
DD
16
15
14
13
12
11
10
9
MS6258
A.O.
1
2
3
4
5
6
7
L-IN3
L-IN2
L-IN1
L-OUT
V
SS
SDA
SCL
V
REF
R-IN3
R-IN2
R-IN1
R-OUT
V
DD
8
L-IN4
R-IN4
MS6258
Note: 1. Pin 1 is set to Lo or open , the address code is 88H (10001000B).
2. Pin 1 is set to Hi , the address code is 8CH (10001100B).
3. The V
REF
connects a capacitor to Vss.
MO
SA
MS6258
Gain And Attenuation Volume Controller IC
REV 1
2
www.mosanalog.com.tw
BLOCK DIAGRAM
R-IN2
R-IN3
I2C Interface
-10dB/STEP
-1dB/STEP
1dB/STEP
Serial Bus Decoder and Latches
Reference
Circuit
1dB/STEP
-1dB/STEP
-10dB/STEP
L-IN1
L-IN2
L-IN3
R-IN1
REF
SDA
SCL
V
REF
R-OUT
L-OUT
R-IN4
L-IN4
ORDERING INFORMATION
Package
Part number
Packaging Marking
Transport Media
16-Pin SOP
MS6258TR
MS6258AS
2.5k Units Tape and Reel
16-Pin SOP
MS6258U
MS6258AS
50 Units Tube
16-Pin SOP (lead free)
MS6258GTR
MS6258ASG
2.5k Units Tape and Reel
16-Pin SOP (lead free)
MS6258GU
MS6258ASG
50 Units Tube
16-Pin SSOP
MS6258SSTR
MS6258
2.5k Units Tape and Reel
16-Pin SSOP
MS6258SSU
MS6258
100 Units Tube
16-Pin SSOP (lead free)
MS6258SSGTR
MS6258G
2.5k Units Tape and Reel
16-Pin SSOP (lead free)
MS6258SSGU
MS6258G
100 Units Tube
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter Rating
Unit
V
DD
Supply
Voltage
6
V
V
ESD
Electrostatic Handling
-4500 to 4500
V
T
STG
Storage Temperature Range
-65 to 150
T
A
Operating Ambient Temperature Range
-40 to 85
T
J
Maximum Junction Temperature
150
T
S
Soldering Temperature, 10 seconds
260
R
THJA
Thermal Resistance from Junction to Ambient in Free Air
SOP16
SSOP16
210
210
/W
OPERATING RATINGS
Symbol Parameter Min Typ Max Unit
V
DD
Supply Voltage
2.7
-
5.5
V
MO
SA
MS6258
Gain And Attenuation Volume Controller IC
REV 1
3
www.mosanalog.com.tw
5V ELECTRICAL CHARACTERISTICS
(V
DD
=5.0V, V
SS
=0V, Attenuation=0dB, Gain=0dB, f=1kHz, V
O
=0dBV, V
REF
Cap=10uF; unless otherwise specified)
Symbol Parameter
Conditions Min
Typ
Max
Unit
DC Characteristics
I
Q
Quiescent current
-
3.8
4.2
mA
Max gain
-
15
-
dB
A
GA
Gain/Attenuation
Max attenuation
-
-79
-
dB
A
STEP
Gain/Attenuation step
-
1
-
dB
E
GA
Gain/Attenuation step error
-
0.3
-
dB
E
IGA
Interchannel gin/attenuation error
-
0.3
-
dB
CS Channel
separation
95 105 - dB
PSRR
Power supply rejection ratio
Vripple = -20dBV, 100Hz
-
53
-
dB
MUTE Mute
Attenuation
Vin=0dBV
-
85
-
dB
Rin Input
Impedance
18 20 - k
Rout Output
Impedance
-
50 100
AC Characteristics
Vo
Maximum output voltage swing
(THD+N)/S < 0.1%
-
4.8
-
Vpp
THD+N
Total harmonic distortion plus
noise
-
-69
-64
dB
S/N Signal-to-noise
ratio
V
O
=4.5Vpp 95
100
-
dB
Bus Characteristics
V
IH
Bus high input level
-
-
0.7V
DD
V
V
IL
Bus low input level
0.3V
DD
- - V
3.3V ELECTRICAL CHARACTERISTICS
(V
DD
=3.3V, V
SS
=0V, Attenuation=0dB, Gain=0dB, f=1kHz, V
O
=-3dBV, V
REF
Cap=10uF; unless otherwise specified)
Symbol Parameter
Conditions Min
Typ
Max
Unit
DC Characteristics
I
Q
Quiescent current
-
3.7
4.1
mA
CS Channel
separation
90 100 - dB
PSRR
Power supply rejection ratio
Vripple = -20dBV, 100Hz
-
52
-
dB
MUTE Mute
Attenuation
Vin=-3dBV
-
80
-
dB
AC Characteristics
Vo
Maximum output voltage swing
(THD+N)/S < 0.1%
-
3
-
Vpp
THD+N
Total harmonic distortion plus
noise
-
-69
-64
dB
S/N Signal-to-noise
ratio
85 90 - dB
MO
SA
MS6258
Gain And Attenuation Volume Controller IC
REV 1
4
www.mosanalog.com.tw
2.7V ELECTRICAL CHARACTERISTICS
(V
DD
=2.7V, V
SS
=0V, Attenuation=0dB, Gain=0dB, f=1kHz, V
O
=-3dBV, V
REF
Cap=10uF; unless otherwise specified)
Symbol Parameter
Conditions Min
Typ
Max
Unit
DC Characteristics
I
Q
Quiescent current
-
3.2
3.6
mA
CS Channel
separation
90 100 - dB
PSRR
Power supply rejection ratio
Vripple = -20dBV, 100Hz
-
50
-
dB
MUTE Mute
Attenuation
Vin=-3dBV
-
80
-
dB
AC Characteristics
Vo
Maximum output voltage swing
(THD+N)/S < 0.3%
-
2
-
Vpp
THD+N
Total harmonic distortion plus
noise
-
-69
-64
dB
S/N Signal-to-noise
ratio
85 90 - dB
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25, V
REF
Cap=10uF; unless otherwise specified)
THD+N (%)
OUTPUT VOLTAGE (dBV)
THD+N (%)
OUTPUT VOLTAGE (dBV)
THD+N (%)
OUTPUT VOLTAGE (dBV)
THD+N vs. output voltage
THD+N vs. output voltage
THD+N vs. output voltage
f=20Hz
f=20Hz
f=20Hz
f=1kHz
f=20kHz
f=20kHz
f=1kHz
f=1kHz
f=20kHz
V
DD
=5V
V
DD
=2.7V
V
DD
=3.3V
THD+N (%)
FREQUENCY (Hz)
C
H
A
N
N
E
L SEPAR
ATION
(
d
B)
FREQUENCY (Hz)
QUIE
S
C
E
N
T CURRE
NT (mA
)
SUPPLY VOLTAGE (V)
THD+N vs. frequency
Channel separation vs. frequency
Quiescent current vs. supply voltage
V
DD
=5V
V
O
=0dBV
V
DD
=3.3V
V
O
=-3dBV
V
DD
=2.7V
V
O
=-3dBV
V
DD
=5V
V
O
=0dBV
V
DD
=2.7V
V
O
=-3dBV
V
DD
=3.3V
V
O
=-3dBV
MO
SA
MS6258
Gain And Attenuation Volume Controller IC
REV 1
5
www.mosanalog.com.tw
PSR
R
(
d
B)
FREQUENCY (Hz)
PSR
R
(
d
B)
FREQUENCY (Hz)
PSR
R
(
d
B)
FREQUENCY (Hz)
PSRR vs. frequency
PSRR vs. frequency
PSRR vs. frequency
CAP=22uF
CAP=22uF
CAP=22uF
CAP=10uF
CAP=10uF
CAP=10uF
CAP=2.2uF
CAP=2.2uF
CAP=2.2uF
V
DD
=5V
V
RR
=-20dBV
V
DD
=3.3V
V
RR
=-20dBV
V
DD
=2.7V
V
RR
=-20dBV
I
2
C BUS DESCRIPTION
Start and stop conditions
A start condition is activated when the SCL is set to HIGH and SDA shifts from HIGH to LOW state. The stop
condition is activated when SCL is set to HIGH and SDA shifts from LOW to HIGH state. Please refer to the timing
diagram below.
SDA
SCL
Start
Stop
SCL : Serial Clock Line, SDA : Serial Data Line
Data validity
A data on the SDA line is considered valid and stable only when the SCL signal is in HIGH state. The HIGH and
LOW states of the SDA line can only change when the SCL signal is LOW. Please refer to the figure below.
SDA
SCL
Data line
stable,
Data valid
Data
change
allowed
Byte format
Every byte transmitted to the SDA line consists of 8 bits. Each byte must be followed by an acknowledge bit.
The MSB is transmitted first.
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