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PDF MAS6116 Data sheet ( Hoja de datos )
| Número de pieza | MAS6116 | |
| Descripción | Stereo Digital Volume Control | |
| Fabricantes | Micro Analog Systems | |
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DA6116.009
13 January, 2014
MAS6116
Stereo Digital Volume Control
• Signal Voltage up to ± 18V
• Gain range from -111.5dB to +15.5dB
• Small step sizes 0.5dB
• THD 0.0002% in balanced mode
• SNR 124dB in balanced mode
DESCRIPTION
MAS6116 is an ultra low noise stereo volume
control IC for high end audio systems. It can work
with input signals as high as ± 18 V but operates
from a single +5V supply with minimal power.
It has a serial interface that controls two audio
channels independently. The gain of each channel
can be programmed from -111.5dB to +15.5dB in
small 0.5dB steps. It is highly linear, especially in
single channel balanced configuration with just
0.0002% THD.
Audible “Clicks” on gain changes are eliminated by
changing gains only during a zero crossing in the
input signal.
A peak detection circuit allows easy monitoring of
the output signal.
The MAS6116 is available in a 16 pin SOIC
package. Its performance is guaranteed over a
temperature range of -30°C to +85°C.
FEATURES
• Input signal voltage up to ± 18V
• Gain range from -111.5dB to +15.5dB
• Small and equal gain step size 0.5dB
• 0.0002% THD in balanced mono configuration
• Dynamic range 121 dB stereo configuration
• Two independent channels
• Zero cross detection for gain changes
• Power on/off transient suppression
• Signal peak level detection with adjustable
reference
• Instant gain change option
• Hardware and software mute function
• Single +5V operation
• Low power consumption 12mW
APPLICATION
• High End Audio Systems
• Consumer Audio /Entertainment Systems
• Mixing Desks
• Audio Recording Equipment
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DA6116.009
13 January, 2014
On the PCB board the same DATA and CCLK lines can be routed to every MAS6116 chip. If the XCS-pin is not
active (low), DATA pin of that chip is in high-impedance state. This allows using a simple PCB board for multi-
channel audio systems.
The device may be operated with a constant CCLK signal (see figure 1 and 2 examples), or the CCLK signal may
be stopped between commands (see figure 3). The CCLK signal may be stopped in either high or low state. If the
CCLK is stopped between commands, care must be taken to ensure that the chip receives exactly 16 rising clock
edges while XCS is low and that there are no timing violations. See figure 3 signal example of Normal write to
both channels (command 48h=%0100 1000, don’t care bits 0) with written byte E0h=%1110 0000 and having the
CCLK is stopped between commands.
Figure 3. Normal write to both channels (command 48h=%0100 1000, don’t care bits 0) with written byte
E0h=%1110 0000 and the CCLK is stopped between commands.
The write command 48h in figure 3 is ambiguous with command CBh in figure 1 since their only difference is
selecting don’t care bits 0 or 1 respectively.
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DA6116.009
13 January, 2014
ANALOG CHARACTERISTICS
N Gain Control
(AVCC=+5.0 V, AGND=0 V, TA=+25oC unless otherwise noted)
Parameter
Symbol
Conditions
Min Typ Max Unit
Gain range
G
-111.5
+15.5
dB
Step size
D
0.5 dB
Absolute gain
GABS Absolute gain value with setting G=255 +15 +15.5 +16
dB
Gain step error
Gain match error1
DE
ME
Relative to GABS, note 5.
Between channels, note 6.
-0.5 0
-0.2 0
0.5 dB
0.2 dB
Mute attenuation
MATT
AC measurement
96
dB
Note 5. Gain value for each gain setting is measured as AC measurement relative to GABS assuming a gain step size of 0.5dB. Gain
settings 65…255 are tested in production. Gain error for lower gain settings is guaranteed by design only.
Note 6. Gain mismatch is tested in production for gain settings 90…255. Mismatch for lower gain settings is guaranteed by design only.
N Audio Performance
(AVCC=+5.0 V, AGND=0 V, TA=+25oC unless otherwise noted)
Parameter
Noise
Total harmonic
distortion of balanced
circuit
Total harmonic
distortion of
unbalanced circuit
Dynamic Range
Crosstalk
Symbol
N
THDBAL
THD
DR
CR
Conditions
Vin = 0V, Vout with OP2277,
A-weighting
gain=0dB
gain=-40dB
gain=-60dB
gain=mute
Vin=1Vrms, gain=0dB,
fin=1kHz
Vin=0.5Vrms, gain=0dB,
fin=1kHz
Vin=1Vrms, gain=0dB,
fin=1kHz
Vin=0.5Vrms, gain=0dB,
fin=1kHz
A-weighted Noise, gain=0dB
unbalanced circuit
balanced circuit
Between channels, Vin =
5Vrms, gain= 0dB, fin = 1kHz
Min
-100
Typ
11
3.7
2.2
1.8
0.0002
0.0003
0.0063
0.0034
121
124
Max
Unit
µVrms
%
%
%
%
dB
dB
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