MAS6116 [MAS]

Stereo Digital Volume Control; 立体声数字音量控制
MAS6116
型号: MAS6116
厂家: MICRO ANALOG SYSTEMS    MICRO ANALOG SYSTEMS
描述:

Stereo Digital Volume Control
立体声数字音量控制

文件: 总18页 (文件大小:207K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
DA6116.001  
27 February, 2009  
MAS6116  
Stereo Digital Volume Control  
Signal Voltage up to 18V  
Two Independent Channels  
Use of Differential DACs Possible  
Serial Control Registers  
DESCRIPTION  
MAS6116 is a stereo volume control for audio  
systems, which require high output voltages (AC3).  
It has serial interface, which controls two audio  
MAS6116 also features a peak detection circuitry  
that allows easy monitoring of the output signal.  
MAS6116 has also a set of “instant gain change”  
instructions that allow fast gain switching. The use  
of external operational amplifier provides flexibility  
for the operating voltage, signal swing, noise floor  
and cost optimization.  
channels.  
Simple  
serial  
interface  
allows  
microcontroller to control many MAS6116 chips on  
the same PCB board. “Clicking” between gain  
changes is eliminated by changing gain only when  
zero crossing has been detected in the input signal.  
FEATURES  
APPLICATION  
Signal Voltage up to 18V  
Two Independent Channels  
Use of Differential DACs Possible  
Serial Control Registers  
High End Audio Systems  
Multi-channel Audio Systems  
Zero Cross Detection for Gain Changes  
Gain Range +15.5db…-111.5dB  
0.5 dB Gain Step Size  
Mute Pin  
Power On/Off Transient Suppression  
Signal Peak Level Comparator with Adjustable  
Reference  
Independent Writing to Both Channels  
Instant Gain Change Function for Fast Gain  
Switching  
XMUTE Using the Zero Cross and Timeout  
Functions  
Write Operation Status Register  
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DA6116.001  
27 February, 2009  
BLOCK DIAGRAM  
RFO  
RMO  
RIN  
VRIN  
R2  
R1  
R3  
ROUT  
RGND  
VROUT  
PEAK  
DETECTOR  
ZERO  
CROSSING  
DATA  
CCLK  
XCS  
8
DAC  
CONTROL  
XMUTE  
ZERO  
CROSSING  
PEAK  
DETECTOR  
LFO  
LIN  
VLIN  
R2  
R1  
LMO  
R3  
LOUT  
LGND  
AGND  
AVCC  
VLOUT  
MAS6116  
DVCC  
DGND  
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DA6116.001  
27 February, 2009  
PIN CONFIGURATIONS  
SO16  
1
2
3
4
5
16  
15  
14  
13  
12  
11  
10  
9
AGND  
RMO  
AVCC  
LMO  
RFO  
LFO  
LIN  
RIN  
LGND  
XCS  
RGND  
DGND  
CCLK  
DATA  
6
7
8
DVCC  
XMUTE  
PIN DESCRIPTION  
Pin Name  
Pin  
SO16  
Pin  
QFN 4x5  
Type  
Function  
AVCC  
LMO  
1
2
3
23  
24  
1
P
Power Supply, for Analog  
AI  
AI  
External Amplifier Negative Input (Left)  
LFO*  
Feedback Signal from External Amplifier Output  
(Left)  
Input, Left Channel  
LIN*  
LGND  
XCS  
4
5
3
4
AI  
AI  
DI  
P
Signal Ground, Left Channel  
Chip Select Input of Serial Interface  
Power Supply, for Digital  
6
7
DVCC  
XMUTE  
DATA  
CCLK  
DGND  
RGND  
RIN*  
7
8
8
9
DI  
DIO  
DI  
G
Mute Input  
9
11  
12  
13  
16  
17  
19  
Data Input and Output of Serial Interface, Tristate  
Clock Input of Serial Interface  
Ground for Digital  
10  
11  
12  
13  
14  
AI  
AI  
AI  
Signal Ground, Right Channel  
Input, Right Channel  
RFO*  
Feedback Signal from External Amplifier Output  
(Right)  
External Amplifier Negative Input (Right)  
RMO  
15  
16  
20  
21  
AI  
G
AGND  
Ground for Analog  
*) Note: These pins have limited ESD protection. See Absolute Maximum Ratings on page 9 for further details.  
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27 February, 2009  
GENERAL DESCRIPTION  
Main features  
MAS6116 is a stereo digital volume control designed for audio systems. The levels of the left and right analog  
channels are set by the serial interface. Both channels can be programmed independently. The channel gains can  
be programmed from -111.5 dB to +15.5 dB with 0.5 dB resolution. The code for -112 dB (00HEX) activates mute  
for maximum attenuation. MAS6116 operates from single +5V supply and accepts analog input signal levels up to  
18V.  
MAS6116 has a zero cross detect function that changes the channel gain only when a zero crossing has been  
detected in the input signal. This eliminates clicking sounds from the output signal when the gain is changed. The  
zero cross detection circuit is also equipped with a timeout function to make sure the gain value is updated even  
when there is no input signal.  
Channel gains can also be changed instantly without using the zero cross detect function. This can be done with  
dedicated instant gain change commands specified in Register Description on page 7. Using this feature to  
change channel gains in large increments is not recommended because it may cause large transients in the  
output signal. See chapter Changing the gain of the channels and chapter Write operation status register for  
further details.  
The XMUTE pin in MAS6116 always uses the zero cross detection and timeout functions when entering to or  
returning from the MUTE state. This prevents fast transients from occurring in the output signal.  
Serial interface  
Control information is written into or read back from the internal register via the serial control port. Serial control  
port consists of a bi-directional pin for data (DATA), chip select pin (XCS) and control clock (CCLK) and supports  
the serial communication protocol. All control instructions require two bytes of data.  
To shift the data in CCLK must be pulsed 16 times when XCS is low. The data is shifted into the serial input  
register on the rising edges of CCLK pulses. The first 8 bits contain address information. The second byte  
contains the control word. XCS must return to high after the second byte. That is, after the 16th CCLK XCS must  
be returned to high. See chapter Serial interface timing diagram on page 12.  
The same process takes place for reading the information. XCS will remain low for next 16 CCLK pulses. The  
data is shifted out on the falling edges of CCLK. When XCS is high, the DATA pin is in high impedance state,  
which enables DATA pins of other devices to be connected together.  
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.  
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GENERAL DESCRIPTION  
Operating modes  
When power is first applied, power-on reset initializes control registers and sets MAS6116 into mute state,  
ignoring the state of the XMUTE pin. The activation of the device requires that XMUTE pin is high and a control  
byte with a greater than the default value (00HEX) is written in the gain register. It is possible to return to the mute  
state either by setting XMUTE pin low or writing zero (00HEX) to the gain register. Setting the XMUTE pin low will  
mute both channels. Setting the XMUTE pin back high will return the channels to previously written gain values.  
The zero cross detector function is used when entering and returning from the mute state to prevent large  
transients in the output signal (see chapter Changing the gain of the channels).  
The device has a special test mode register, which is used only for internal testing of the device. It is strongly  
recommended not to change the default value (00HEX) of the test register during normal operation. For device  
testing the XMUTE pin is bi-directional. When the test register bit 1 is set to high, XMUTE pin is in output mode. In  
the test mode internal signals can be directed to the XMUTE pin. Note: In the test mode both analog outputs are  
in mute state and the device will not allow new gain values to be written in the gain registers. An exception to this  
is the force latch command specified in table Test Register CR5 Description, which can be used to instantly  
change the gain of both channels. This function is intended to be used in the test mode only, and it is  
recommended to use the commands specified in Register Description to instantly change the channel gains.  
Changing the gain of the channels  
When a new gain value is written to the gain register the device will activate the zero crossing detection and delay  
generator for the selected channel. MAS6116 will wait until a rising edge of the input signal is detected to change  
the gain value. This is done to ensure that no audible clicks are produced to the output signal during the gain  
change operation. The zero cross detection circuit has also a timeout delay generator that will force the gain  
change. The delay generator generates a typical delay of 22 ms.  
If a new gain value is written before the previous write operation has finished, the previously written value will be  
overwritten and will not be set to the output. If it is desired that each gain value is set to the output, it is  
recommended to read the status bit from the write operation status register (CR6) or wait for at least 30 ms before  
the next gain change instruction.  
Both channels can be programmed independently with separate commands. In this case the gain values will be  
set to the output in the order of writing. Both channels can also be programmed to the same value by writing only  
one instruction (see the Register Description on page 7).  
Note: Due to the input signal dependency of the zero cross detection circuits the order of the gain changes may  
differ from the order of writing to the registers if the input signals to the channels are different. This applies to all  
instructions that use the zero cross detection and timeout functions, i.e. instructions that are not labeled as  
“instant” in the register description.  
The new gain value can be set instantly to the output by using the instant gain change function. By using this  
command function the gain is set to the output instantly after the write operation has finished, without waiting a  
zero cross to occur in the input signal or a delay to pass. The gains can be set independently to both channels  
using different commands, or both channels can be set to the same gain value by using a single command. Using  
the instant gain change function to change the gain value in larger than 0.5 dB steps may produce audible clicks  
to the output signal.  
5 (18)  
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27 February, 2009  
GENERAL DESCRIPTION  
Peak level detection  
MAS6116 has a 8-bit digital-to-analog converter (DAC) used to monitor the peak level of the output signal. The  
reference value is programmed using the serial interface and the same reference value is used for both channels.  
The reference value V REF can be calculated using the following formula.  
VREF = (0.0036 + 0.0145 · CODE) · AVCC  
where CODE is the decimal value of the control byte (0...255) and AVCC is the analog supply voltage of the  
MAS6116 device. With nominal analog supply voltage of 5V the reference value is  
VREF = 18mV + 72.5mV · CODE  
When a positive peak signal level at the output exceeds the V REF value, bits 0 and 1 of the status register are  
set (see register description). When set, the register contents will remain high until the value of the status register  
has been read.  
Write operation status register  
MAS6116 features a status register that can be used to determine if the channel registers are ready to accept  
new gain values. The status register bits 0 and 1 are set high at the start of a gain write operation, and are set  
back low when the new gain value has been set to the output. This happens when a positive zero crossing is  
detected in the input signal or the timeout delay has passed.  
It is allowed to write a new gain value to a channel that is busy (i.e. waiting for a zero cross in the input signal).  
The new value will overwrite the previous one and the timeout delay will be reset. This means that the previously  
written gain value will not be set to the channel gain registers. To prevent this from happening it is recommended  
to read the write operation status register prior to setting a new gain value to determine if the write operation can  
be safely executed.  
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DA6116.001  
27 February, 2009  
REGISTER DESCRIPTION  
Register  
Address Byte  
Data Byte  
7
X
6
5
0
4
1
3
0
2
R
1
X
0
X
msb…lsb  
Output code  
00000000  
00000001  
00000010  
00000011  
Output code  
00000000  
00000001  
00000010  
00000011  
Input code  
11111111  
11111110  
11111101  
Function  
Write Operation Status  
CR6  
1
1
1
Both channels ready  
Right channel busy Left  
channel busy  
Both channels busy  
Peak Detector Status  
CR4  
X
X
0
1
1
0
1
0
R
X
X
X
X
No overload  
Right overload  
Left overload  
Both overload  
DAC output, Note 1.  
Peak Detector  
Reference  
CR3  
R/W  
VREF(255)  
VREF(254)  
VREF(253)  
00000010  
00000001  
00000000  
Input code  
11111111  
11111110  
11111101  
VREF(2)  
VREF(1)  
VREF(0)  
Gain dB  
+15.5  
+15.0  
+14.5  
Left Channel Gain  
CR2  
X
1
1
0
1
R/W  
X
X
0.0  
-111.0  
-111.5  
Mute  
Gain dB  
+15.5  
+15.0  
+14.5  
11100000  
00000010  
00000001  
00000000  
Input code  
11111111  
11111110  
11111101  
Right Channel Gain  
CR1  
X
1
1
1
0
R/W  
X
X
0.0  
-111.0  
-111.5  
Mute  
11100000  
00000010  
00000001  
00000000  
Test Mode, CR5  
Normal Write, Both  
Instant Write, Left (CR2)  
Instant Write, Right  
(CR1)  
X
X
X
X
1
1
0
0
1
0
1
1
1
0
0
1
1
1
1
0
R/W  
W
W
W
X
X
X
X
X
X
X
X
Reserved  
Write to both gain registers  
Instant gain set to left channel  
Instant gain set to right channel  
Instant Write, Both  
X
0
1
1
1
W
Note 1. Reference voltage is calculated from VREF = (0.0036 + 0.0145 • CODE) • AVCC  
X
X
Instant gain set to both channels  
Address byte bits:  
Bit 2 is read/write bit (1=read, 0=write).  
Bits marked as X are don’t care bits.  
The instant write commands write values to CR1 and CR2 registers for right and left channels respectively.  
These values can be read by using the specified read commands for CR1 and CR2 registers.  
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Data byte bits:  
All registers are set to their default values 00HEX except CR3 which is set to FFHEX during power-on reset.  
Default value for all bits is zero (00HEX).  
TEST REGISTER CR5 DESCRIPTION  
Note: Test register is intended for internal testing of the device only and not supposed to be used in  
normal operation. It is strongly recommended not to change initial test register value from the default  
(00HEX).  
The XMUTE pin is in output mode when bit 1 in the test register CR5 is set. Bits 2, 3 and 4 select the internal  
signal to be routed to the XMUTE pin in the test mode.  
Condition  
Data Byte bits  
Function  
7
0
0
0
0
0
0
0
0
0
0
6
0
0
0
0
0
0
0
0
0
0
5
0
0
0
0
0
0
0
0
0
0
4
0
0
0
0
0
0
1
1
1
1
3
0
0
0
0
1
1
0
0
1
1
2
0
0
0
1
0
1
0
1
0
1
1
0
0
1
1
1
1
1
1
1
1
0
0
1
0
0
0
0
0
0
0
0
XMUTE=in  
Normal operation  
Force latch, note 2  
Left delay generator  
Left peak detector  
Left zero crossing  
Left gain set enable  
Right delay generator  
Right peak detector  
Right zero crossing  
Right gain set enable  
Test, XMUTE=in  
Test, XMUTE=out  
Test, XMUTE=out  
Test, XMUTE=out  
Test, XMUTE=out  
Test, XMUTE=out  
Test, XMUTE=out  
Test, XMUTE=out  
Test, XMUTE=out  
Note 2. Forces the new gain value to be set without waiting for a zero crossing to occur in the input signal or the timeout delay to pass. When  
force latch is used, both channels are latched with the same gain value.  
POWER-ON RESET  
MAS6116 has a Power-On Reset circuit (POR) that ensures that the circuit is set to a known state when power is  
applied. The device can be activated as described in chapter Operating modes after the POR delay has passed.  
In addition MAS6116 has a supply voltage monitoring circuit, that monitors the digital supply voltage (DVCC) level.  
If the digital supply voltage drops below the specified level, the circuit is set to RESET state. The voltage  
monitoring circuit is functional only when sufficient analog supply voltage (AVCC) is present.  
Parameter  
Symbol  
TPOR  
Conditions  
Min  
Typ  
450  
2.8  
Max  
Unit  
POR delay  
From DVCC=5V to POR rising edge  
Measured from DGND  
µs  
Monitored DVCC  
level  
Vmon  
V
AVCC level to  
enable DVCC  
monitoring  
VAVCC  
Measured from AGND  
2.5  
V
8 (18)  
DA6116.001  
27 February, 2009  
ABSOLUTE MAXIMUM RATINGS  
All voltages with respect to ground.  
Parameter  
Symbol  
Conditions  
Min  
-20  
Max  
+20  
Unit  
V
Signal Voltage  
RIN, RFO, LIN, LFO  
AVCC, DVCC  
Positive Supply Voltage  
All other pins  
-0.5  
-0.3  
+6.0  
V
DATA, CLK, XCS,  
XMUTE  
TS  
Note 3.  
AVCC  
+0.3  
+125  
V
Storage Temperature  
-55  
-40  
oC  
oC  
V
Operating Temperature  
ESD (HBM) pins 3, 4, 13 and 14  
ESD (HBM) all other pins  
TA  
+95  
200  
2000  
V
Note 3. Pin voltage must not exceed +6V under any circumstances.  
Stresses beyond those listed may cause permanent damage to the device. The device may not operate under these conditions, but it will not  
be destroyed.  
RECOMMENDED OPERATION CONDITIONS  
(AVCC=+5.0 V, AGND=0 V, TA=+25oC unless otherwise noted)  
Parameter  
Symbol  
Conditions  
Min  
Typ  
Max  
Unit  
Signal Voltage  
RIN, RFO, LIN,  
LFO  
AVCC,DVCC  
-18  
+18  
V
Positive Supply Voltage  
Negative Supply Voltage  
Signal Grounds  
4.5  
-30  
5
0
5.5  
V
V
AGND,DGND  
LGND,RGND  
TA  
0
V
oC  
Operating Temperature  
+25  
+85  
ANALOG CHARACTERISTICS  
N Analog Inputs/Outputs  
(AVCC=+5.0 V, AGND=0 V, TA=+25oC unless otherwise noted)  
Parameter  
Symbol  
RIN  
Conditions  
Min  
Typ  
10  
Max  
Unit  
Input impedance  
Input capacitance  
Input offset voltage  
Average impedance, note 4  
For any gain value  
7
13  
k  
pF  
CIN  
2
VIH  
External OpAmp,  
Gain = 15.5 dB  
Note 5  
0.23  
mV  
Supply current  
Supply current  
Power supply  
rejection ratio1  
IVCC  
IGND  
PSRR  
From AVCC  
From AGND  
From AVCC  
0.6  
80  
2.2  
mA  
mA  
dB  
Note 4. Average input impedance is calculated as an average of the impedance measured for all gain values.  
Note 5. Output offset voltage depends on external opamp and selected gain. Low input offset voltage and input bias current opamp is  
recommended to be used for minimum output offset.  
9 (18)  
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ANALOG CHARACTERISTICS  
N Gain Control  
(AVCC=+5.0 V, AGND=0 V, TA=+25oC unless otherwise noted)  
Parameter  
Symbol  
G
Conditions  
Min  
Typ  
Max  
Unit  
Gain range  
-111.5  
+15.5  
dB  
dB  
dB  
dB  
dB  
dB  
Step size  
D
0.5  
+15.5  
0
Absolute gain  
Gain step error  
Gain match error1  
Mute attenuation  
GABS  
DE  
Absolute gain value with setting G=255  
Relative to GABS, note 6  
Between channels, note 7  
AC measurement  
+15  
-0.5  
-0.2  
96  
+16  
0.5  
0.2  
ME  
0
MATT  
Note 6. 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 7. 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  
Symbol  
Conditions  
Min  
Typ  
Max  
Unit  
Noise  
N
Vin = 0V, Vout with OP2277,  
A-weighting  
gain=0dB  
11  
3.7  
2.2  
1.8  
gain=-40dB  
gain=-60dB  
gain=mute  
Vin=5Vrms, gain=0dB,  
fin=800Hz  
µVrms  
3rd harmonic  
component  
Total harmonic  
3rd HD  
THD  
SNR  
CR  
-75  
-68  
dB  
dB  
dB  
dB  
Vin=5Vrms, gain=0dB,  
fin=800Hz, 10 harmonics  
Vin=5Vrms, gain=0dB,  
fin=800Hz, non-weighted  
Between channels, Vin =  
5Vrms, gain= 0dB, fin = 1kHz  
-72  
distortion plus noise  
Signal to noise ratio  
100  
Crosstalk  
-110  
N Peak Level Detection  
(AVCC=+5.0 V, AGND=0 V, TA=+25oC unless otherwise noted)  
Parameter  
Symbol  
Conditions  
Min  
Typ  
Max  
Unit  
Peak detector  
minimum level  
Peak detector  
maximum level  
Peak detector step  
size  
VMIN  
PD reference = 0  
0
18  
500  
20  
mV  
VMAX  
PD reference = 255  
18  
60  
18.5  
72.5  
V
VSTEP  
90  
mV  
N Zero Cross Detection Timeout  
(AVCC=+5.0 V, AGND=0 V, TA=+25oC unless otherwise noted)  
Parameter  
Symbol  
Conditions  
Min  
Typ  
Max  
Unit  
Zero cross  
detection timeout  
TDEL  
15  
22  
30  
ms  
10 (18)  
DA6116.001  
27 February, 2009  
DIGITAL CHARACTERISTICS  
N Digital Inputs/Outputs  
(AVCC=+5.0 V, AGND=0 V, TA=+25oC unless otherwise noted)  
Parameter  
Symbol  
Conditions  
Min  
Typ  
Max  
Unit  
Input low voltage  
VIL  
All digital inputs,  
DC  
0.3*  
DVCC  
V
V
V
V
Input high voltage  
Output low voltage  
Output high voltage  
VIH  
VOL  
VOH  
All digital inputs,  
DC  
0.7*  
DVCC  
All digital outputs,  
IL=2mA  
0.3*  
DVCC  
All digital outputs,  
IH=-2mA  
0.7*  
DVCC  
N Serial Interface Timing  
(AVCC=+5.0 V, AGND=0 V, TA=+25oC unless otherwise noted)  
Parameter  
Symbol  
FCCLK  
TWHC  
TWLC  
TRC  
Conditions  
Min  
Typ  
Max  
Unit  
MHz  
ns  
Frequency of CCLK  
Period of CCLK high  
Period of CCLK low  
Rise time of CCLK  
Fall time of CCLK  
10  
Measured from VIH to VIH  
Measured from VIL to VIL  
Measured from VIL to VIH  
Measured from VIH to VIL  
50  
50  
ns  
100  
100  
ns  
TFC  
ns  
Hold time, CCLK high to  
XCS low  
THCHS  
20  
ns  
Setup time, XCS low to  
CCLK high  
TSSLCH  
TSDCH  
THCHD  
TDCLD  
TDSZ  
100  
100  
100  
ns  
ns  
ns  
ns  
ns  
ns  
ns  
Setup time, valid CI to  
CCLK high  
Hold time, CCLK high to  
invalid CI  
Delay time, CCLK low to  
valid CI  
Load=100pF  
50  
Delay time, XCS high or 8th  
CCLK low to invalid CI  
Hold time, 16th CCLK high  
to XCS high  
50  
150  
Load=3.3kΩ  
THLCHS  
TSSHCH  
200  
200  
Setup time, XCS high to  
CCLK high  
11 (18)  
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SERIAL INTERFACE TIMING  
TWHC  
TRC  
TWLC  
TFC  
1
2
3
4
5
6
7
8
9
10 11  
13 14 15 16  
12  
CCLK  
THCSH  
TSSHCH  
THLCHS  
TSSLCH  
XCS  
THCHD  
TSDCH  
DATA  
(IN)  
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
TDCLD  
TDSZ  
DATA  
(OUT)  
4
3
7
6
5
2
1
0
DATA BYTE  
ADDRESS BYTE  
12 (18)  
DA6116.001  
27 February, 2009  
APPLICATION INFORMATION  
Application Note 1 – Typical application  
Connect signal ground and opamp +input together on PCB  
RF  
+18V  
RIN  
LFO  
LMO  
LIN  
-
+
AUDIO SOURCE  
LGND  
LEFT CHANNEL  
-18V  
RF  
+18V  
RIN  
RFO  
RIN  
-
+
RMO  
AUDIO SOURCE  
RGND  
RIGHT CHANNEL  
-18V  
MAS6116  
+5VDC  
MICRO-  
CONTROLLER  
XCS  
AVCC  
DATA  
CCLK  
DVCC  
+
10uF  
220nF  
XMUTE  
AGND  
DGND  
Application Note 2 - Configuration for balanced output DAC (only one channel shown)  
RFO  
+18V  
RIN  
RMO  
-
2k  
RGND  
2k  
+18V  
+
-18V  
-
MAS6116  
+
+18V  
-18V  
+
-
LGND  
LFO  
LIN  
2k  
2k  
-18V  
LMO  
13 (18)  
DA6116.001  
27 February, 2009  
APPLICATION INFORMATION  
Application Note 3 – Single supply voltage usage  
Single supply voltage circuit below is based on signal AC coupling and biasing output opamp in the middle point of  
supply voltages. Note that only right channel circuit is presented. The left channel circuit would be exactly the  
same. The component values have been chosen to limit overall lower corner frequency to about 10 Hz.  
AVCC DVCC  
+ 5V supply  
10µF  
RFO  
MAS6116  
(Right Channel)  
1MΩ  
1MΩ  
IN  
+
-
OUT (inverted)  
10µF  
10µF  
RIN  
RM  
100nF  
AC  
10kΩ  
1MΩ  
RGND  
LGND  
DGND  
AGND  
Application Note 4 – Lower supply voltage MCU communication example 1  
If the serial control interface is driven from MCU which operates from lower supply voltage than MAS6116 which is  
using higher 5V voltage supply there is level shifting needed for keeping the digital signal levels proper in the  
communication. The bi-directional DATA line requires additionally level shifting in both directions. Figure below  
shows an example of serial interface level shifting between 3V and 5V voltage supplies. In this example level  
shifters with output enable function are used. The output enable function is used to disable level shifter output  
when data direction changes in the bi-directional data line of MAS6116.  
+3V  
+5V  
+5V  
DVDD  
AVDD  
VDD  
+3V  
+5V  
GPIO  
MAS6116  
MCU  
DATA  
GPIO  
GPIO  
OE  
+5V  
+5V  
+5V  
CLK  
XCS  
GPIO  
GPIO  
GPIO  
XMUTE  
14 (18)  
DA6116.001  
27 February, 2009  
APPLICATION INFORMATION  
Application Note 5 – Lower supply voltage MCU communication example 2  
Second example of communication with lower supply voltage MCU is shown in the figure below. There are open  
drain buffers used in the level shifting between 3V and 5V signal levels. In this example the DATA signal line  
communication is bi-directional also on the MCU side.  
+3V  
+5V  
+5V  
+3V  
4k7  
+5V  
4k7  
DVDD  
AVDD  
VDD  
74LVC1G07  
+3V  
+5V  
4k7  
74LVC1G07  
MAS6116  
MCU  
4k7  
DATA  
GPIO  
GPIO  
GPIO  
GPIO  
+3V  
+5V  
4k7  
CLK  
XCS  
74LVC1G07  
+3V  
+5V  
4k7  
74LVC1G07  
+3V  
+5V  
4k7  
74LVC1G07  
XMUTE  
15 (18)  
DA6116.001  
27 February, 2009  
SO-16 PACKAGE OUTLINE  
16 LEAD SO OUTLINE (300 MIL BODY)  
1.27  
TYP.  
0-0.13  
RAD.  
0.36  
0.48  
5°TYP.  
5°TYP  
0.33 x 45°  
5°TYP.  
0.25 RAD.  
MIN.  
SEATING  
PLANE  
5°TYP.  
5°TYP.  
10.10  
10.50  
PIN 1  
ALL MEASUREMENTS IN mm  
All dimensions are in accordance with JEDEC standard MS-013.  
SOLDERING INFORMATION  
N For Lead-Free / Green QFN 4mm x 5mm  
Resistance to Soldering Heat  
Maximum Temperature  
Maximum Number of Reflow Cycles  
Reflow profile  
According to RSH test IEC 68-2-58/20  
260°C  
3
Thermal profile parameters stated in IPC/JEDEC J-STD-020  
should not be exceeded. http://www.jedec.org  
Solder plate 7.62 - 25.4 µm, material Matte Tin  
Lead Finish  
16 (18)  
DA6116.001  
27 February, 2009  
REEL SPECIFICATIONS  
W2  
C
N
A
D
Tape Slot for Tape Start  
B
W1  
1000 Components on Each Reel  
Reel Material: Conductive, Plastic Antistatic or Static Dissipative  
Carrier Tape Material: Conductive  
Cover Tape Material: Static Dissipative  
Carrier Tape  
Cover Tape  
Start  
End  
Leader  
Trailer  
Components  
Dimension  
Min  
Max  
Unit  
A
B
C
D
N
178  
mm  
mm  
mm  
mm  
mm  
mm  
mm  
mm  
mm  
1.5  
12.80  
20.2  
50  
13.50  
W1 (measured at hub)  
W2 (measured at hub)  
Trailer  
8.4  
9.9  
14.4  
160  
390,  
Leader  
of which minimum 160 mm of  
empty carrier tape sealed with cover  
tape  
17 (18)  
DA6116.001  
27 February, 2009  
ORDERING INFORMATION  
Product Code  
Product  
Package  
Quantity  
Comments  
MAS6116AA1SA306  
MAS6116  
MAS6116  
16-pin Plastic SOIC,  
RoHS compliant  
1000 pcs/reel in MBB MBB=Moisture  
Barrier Bag  
MAS6116AA1SA308  
16-pin Plastic SOIC,  
RoHS compliant  
46 pcs/tube  
MSB0091A Bake  
recommendation for  
surface mounted  
devices  
LOCAL DISTRIBUTOR  
MICRO ANALOG SYSTEMS OY CONTACTS  
Micro Analog Systems Oy  
Kamreerintie 2, P.O. Box 51  
FIN-02771 Espoo, FINLAND  
Tel. +358 9 80 521  
Fax +358 9 805 3213  
http://www.mas-oy.com  
NOTICE  
Micro Analog Systems Oy reserves the right to make changes to the products contained in this data sheet in order to improve the design or  
performance and to supply the best possible products. Micro Analog Systems Oy assumes no responsibility for the use of any circuits shown  
in this data sheet, conveys no license under any patent or other rights unless otherwise specified in this data sheet, and makes no claim that  
the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Micro Analog  
Systems Oy makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification.  
18 (18)  

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