MITSUMI
Audio MM1407
Audio
Monolithic IC MM1407
Outline
This audio IC was developed for notebook PCs and allows major reduction of amp circuit board area. (To
conform to PC98, includes built-in speaker drive amp, headphone amp, line amp. stereo/monaural switching,
DC voltage control electronic volume, watchdog, logic control function.)
Features
(1) Speaker amp: Stereo BTL output 0.7W (when V
CC
= 5.0V, R
L
= 8
)
(2) Electronic volume control (-60 ~ +20dB). THD = 0.5% (when P
OUT
= 300mW, R
L
= 8
)
THD1 = 0.5% (when V
OUT
= 100mVrms, R
L
= 16
)
THD2 = 0.1% (when V
OUT
= 1VmVrms, R
L
= 10k
)
(4) Line amp: Mixes 4 inputs ( 2ch signals and outputs on 3 outputs ( 2ch. Stereo/monaural switching
possible on one line. THD = 0.1% (when V
OUT
= 1Vrms, R
L
= 10k
)
(5) Microphone amp: Switch pin selects 1 of 4 inputs
(6) Logic control: Speaker, headphone and line amp (including microphone amp and mix amp) logic
controllable. Current consumption 300A during power save mode.
Applications
(1) Notebook PC audio control
Package
QFP-80B
MITSUMI
Audio MM1407
Block Diagram
Audio signal control section
(Except where otherwise indicated amp gain is 0dB.)
MITSUMI
Audio MM1407
HP signal control section
SP signal
control
section
Digtal signal
control section
MITSUMI
Audio MM1407
Pin Description
1
Vref-IN
21
IS IN A (R)
41
HP (R)
61
HP IN (L)
2
Aux E (L)
22
IS IN B (R)
42
V
CC
1
62
IS IN E (L)
3
Aux D (L)
23
IS IN C (R)
43
PGND1
63
SP IN (L)
4
Aux C (L)
24
IS IN D (R)
44
SP (R)+
64
HP VOL
5
Aux B (L)
25
IS SEL
45
VP1
65
Mic-sel 0
6
Aux A (L)
26
Line out (R)
46
VP2
66
Mic-sel 1
7
Aux Mix (L)
27
Pre out A (R)
47
SP (R)-
67
Mic-1
8
Line in B (L)
28
Pre out B (R)
48
PGND2
68
Mic-2
9
Line in A (L)
29
Mono SEL
49
GND1
69
Mic-4
10
Line Mix (L)
30
Cap
50
GND2
70
Mic-3
11
AGND1
31
WAKEUP
51
PGND3
71
Mic out
12
Line Mix (R)
32
AMPSD
52
SP (L)+
72
AGND2
13
Line in A (R)
33
SD
53
VP3
73
Pre out B (L)
14
Line in B (R)
34
HP-IN
54
VP4
74
Pre out A (L)
15
Aux Mix (R)
35
DGND
55
SP (L)-
75
Line out (L)
16
Aux A (R)
36
VD
56
PGND4
76
AV
CC
17
Aux B (R)
37
Vref (P)-IN
57
V
CC
2
77
IS IN D (L)
18
Aux C (R)
38
SP IN (R)
58
HP (L)
78
IS IN C (L)
19
Aux D (R)
39
IS IN E (R)
59
IS IN E VOL
79
IS IN B (L)
20
Aux E (R)
40
HP IN (R)
60
SP VOL
80
IS IN A (L)
QFP-80B
1
3
7
6
2
4 5
8
60
57
55
59 58
56
53
9
52
10
51
11
50
12
49
13
48
14
47
15
46
16
45
17
44
18
43
19
42
20
41
40
61
39
62
38
63
37
64
36
65
35
66
34
33
32
31
30
29
28
27
26
25
24
23
22
21
67
68
69
70
71
72
73
74
75
76
77
78
79
80
54
MITSUMI
Audio MM1407
Pin Description
Pin No.
Pin name
Input/Output
Section
Function
1
Vref-IN
Power supply
Audio signal control Applies audio signal control reference potential.
(reference)
2
Aux E (L)
Input
Audio signal control 1 of 5 Aux Mix (L) (add amp) inputs.
3
Aux D (L)
Input
Audio signal control 1 of 5 Aux Mix (L) (add amp) inputs.
4
Aux C (L)
Input
Audio signal control 1 of 5 Aux Mix (L) (add amp) inputs.
5
Aux B (L)
Input
Audio signal control 1 of 5 Aux Mix (L) (add amp) inputs.
6
Aux A (L)
Input
Audio signal control 1 of 5 Aux Mix (L) (add amp) inputs.
7
Aux Mix (L)
Output
Audio signal control Signal with Aux A ~ E (L) input added is output.
8
Line In B (L)
Input
Audio signal control 1 of 2 Line In (L) (add amp) inputs.
9
Line In A (L)
Input
Audio signal control 1 of 2 Line In (L) (add amp) inputs.
10
Line Mix (L)
Output
Audio signal control Signal with Aux A ~ B (L) input added is output.
11
AGND1
GND
Audio signal control Audio signal control ground pin. (except for Mic amp)
12
Line Mix (R)
Output
Audio signal control Signal with Aux A ~ B (L) input added is output.
13
Line In A (R)
Input
Audio signal control 1 of 2 Line In (R) (add amp) inputs.
14
Line In B (R)
Input
Audio signal control 1 of 2 Line In (R) (add amp) inputs.
15
Aux Mix (R)
Output
Audio signal control Signal with Aux A ~ E (R) input added is output.
16
Aux A (R)
Input
Audio signal control 1 of 5 Aux Mix (R) (add amp) inputs.
17
Aux B (R)
Input
Audio signal control 1 of 5 Aux Mix (R) (add amp) inputs.
18
Aux C (R)
Input
Audio signal control 1 of 5 Aux Mix (R) (add amp) inputs.
19
Aux D (R)
Input
Audio signal control 1 of 5 Aux Mix (R) (add amp) inputs.
20
Aux E (R)
Input
Audio signal control 1 of 5 Aux Mix (R) (add amp) inputs.
21
IS IN A (R)
Input
Audio signal control
1 pin of 4 amp inputs that output to Line Out (R), Pre Out
A (R), Pre Out B (R), (L).
22
IS IN B (R)
Input
Audio signal control
1 pin of 4 amp inputs that output to Line Out (R), Pre Out
A (R), Pre Out B (R), (L).
23
IS IN C (R)
Input
Audio signal control
1 pin of 4 amp inputs that output to Line Out (R), Pre Out
A (R), Pre Out B (R), (L).
24
IS IN D (R)
Input
Audio signal control
1 pin of 4 amp inputs that output to Pre Out A (R), Pre
Out B (R), (L).
25
IS Sel.
Input (SW)
Audio signal control
This pin selects either of two inputs IS IN A (R) or IS IN
B (R). (See Figure A)
26
Line Out (R)
Output
Audio signal control
A signal that has IS IN A (R) or B (R) or IS IN C (R)
added is output.
27
Pre Out A (R)
Output
Audio signal control
A signal that has IS IN A (R) or B (R) or IS IN C (R) or
IS IN D (R) added is output.
28
Pre Out B (R)
Output
Audio signal control
During Mono Sel. R Stereo selection, a signal that has IS IN A
(R) or B (R) or IS IN C (R) or IS IN D (R) added is output.
During Mono Sel. R Mono selection, a signal that is a mixture of
a signal with (R) input added and then lowered 9dB and a signal
that with (L) input added and lowered 9dB.
29
Mono Sel. Input (SW)
Audio signal control
This pin switches Pre Out B (L), (R) Stereo and Mono
output. (See Figure A)
30
Cap
Input (logic) Digital signal control
This pin sets clock monitoring time for the watchdog timer
circuit. Clock monitoring time is determined by the capacitor
time constant connected to this pin. (See Figure C)
31
WAKEUP
Input (logic) Digital signal control 1 of 4 logic circuit inputs. (See Figure D)
32
AMPSD
Input (logic) Digital signal control 1 of 4 logic circuit inputs. (See Figure D)
33
SD
Input (logic) Digital signal control 1 of 4 logic circuit inputs. (See Figure D)
MITSUMI
Audio MM1407
Pin No.
Pin name
Input/Output
Section
Function
34
HP-IN
Input (logic) Digital signal control 1 of 4 logic circuit inputs. (See Figure D)
35
DGND
GND
Digital signal control Digital signal control ground pin.
36
VD
Power supply
Digital signal control Digital signal control Vcc pin. (
*
1)
37
Vref- (P) IN
Power supply
SP, HP signal control Applies SP, HP signal control section reference potential.
(reference)
38
SP IN (R)
Input
SP signal control
1 of 2 SP amp (R-ch) inputs. Use music source, etc.
input.
39
IS IN E (R)
Input
SP signal control
1 of 2 SP amp (R-ch) inputs. Use beep alarm sound, etc.
input.
40
HP IN (R)
Input
HP signal control
HP amp (R-ch) input.
41
HP (R)
Output
HP signal control
HP amp (R-ch) output.
42
V
CC
1
Power supply SP, HP signal control
SP, HP amp input stage, EVR circuit, DC bias circuit V
CC
pin. (
*
2)
43
PGND1
GND
SP, HP signal control SP, HP amp output stage (power amp) ground pin.
44
SP (R) +
Output
SP signal control
SP amp (R-ch) BTL output (+) pin.
45
VP1
Power supply SP, HP signal control SP, HP amp output stage (power amp) V
CC
pin.
46
VP2
Power supply SP, HP signal control SP, HP amp output stage (power amp) V
CC
pin.
47
SP (R) -
Output
SP signal control
SP amp (R-ch) BTL output (-) pin.
48
PGND2
GND
SP, HP signal control SP, HP amp output stage (power amp) ground pin.
49
GND1
GND
SP, HP signal control
SP, HP amp input stage, EVR circuit, DC bias circuit
ground pin. (
*
3)
50
GND2
GND
SP, HP signal control
SP, HP amp input stage, EVR circuit, DC bias circuit
ground pin. (
*
3)
51
PGND3
GND
SP, HP signal control SP, HP amp output stage (power amp) ground pin.
52
SP (L) +
Output
SP signal control
SP amp (L-ch) BTL output (+) pin.
53
VP3
Power supply SP, HP signal control SP, HP amp output stage (power amp) V
CC
pin.
54
VP4
Power supply SP, HP signal control SP, HP amp output stage (power amp) V
CC
pin.
55
SP (L) -
Output
SP signal control
SP amp (L-ch) BTL output (-) pin.
56
PGND4
GND
SP, HP signal control SP, HP amp output stage (power amp) ground pin.
57
V
CC
2
Power supply SP, HP signal control
SP, HP amp input stage, EVR circuit, DC bias circuit Vcc
pin. (
*
2)
58
HP (L)
Output
HP signal control
HP amp (R-ch) output pin.
59
IS IN E Vol.
Input
SP signal control
SP amp IS IN E input electronic volume pin. (
*
4)
60
SP Vol.
Input
SP signal control
SP amp SP IN input electronic volume pin. (
*
5)
61
HP IN (L)
Input
HP signal control
HP amp (L-ch) input.
62
IS IN E (L)
Input
SP signal control
1 of 2 SP amp (L-ch) inputs. Use beep alarm sound, etc.
input.
63
SP IN (L)
Input
SP signal control
1 of 2 SP amp (L-ch) inputs. Use music source, etc.
input.
64
HP Vol.
Input
HP signal control
HP amp electronic volume pin. (
*
6)
65
Mic-Sel.0
Input
Audio signal control
Selects 1 of 4 Mic amp inputs in combination with Mic-
Sel. 1 pin. (See Figure E)
66
Mic-Sel.1
Input
Audio signal control
Selects 1 of 4 Mic amp inputs in combination with Mic-
Sel. 0 pin. (See Figure E)
67
Mic-1
Input
Audio signal control 1 of 4 Mic amp inputs.
68
Mic-2
Input
Audio signal control 1 of 4 Mic amp inputs.
69
Mic-4
Input
Audio signal control 1 of 4 Mic amp inputs.
70
Mic-3
Input
Audio signal control 1 of 4 Mic amp inputs.
71
Mic-Out
Output
Audio signal control
1 of 4 Mic 1 ~ 4 inputs is output depending on
combination of Mic Sel. 0 and Mic Sel. 1 pins.
MITSUMI
Audio MM1407
Pin No.
Pin name
Input/Output
Section
Function
72
AGND2
GND
Audio signal control Mic amp ground pin.
73
Pre Out B (L)
Output
Audio signal control
During Mono Sel. R Stereo selection, a signal that has IS IN A (L)
or B (L) or IS IN C (L) or IS IN D (L) added is output. During
Mono Sel. R Mono selection, a signal that is a mixture of a signal
with (L) input added and then lowered 9dB and a signal that with
(R) input added and lowered 9dB. (See Figure B)
74
Pre Out A (L)
Output
Audio signal control
A signal that has IS IN A (R) or B (R) or IS IN C (R) or
IS IN D (R) added is output.
75
Pre Out (L)
Output
Audio signal control
A signal that has IS IN A (R) or B (R) or IS IN C (R)
added is output.
76
AV
CC
Audio signal control Audio signal control V
CC
pin.
77
IS IN D (L)
Input
Audio signal control
1 of 4 amp inputs that is output to Pre Out A (R) or Pre
Out B (R), (L).
78
IS IN C (L)
Input
Audio signal control
1 of 4 amp inputs that is output to Line Out (R) or Pre
Out A (R), Pre Out B (R), (L).
79
IS IN B (L)
Input
Audio signal control
1 of 4 amp inputs that is output to Line Out (R) or Pre
Out A (R), Pre Out B (R), (L).
80
IS IN A (L)
Input
Audio signal control
1 of 4 amp inputs that is output to Line Out (R) or Pre
Out A (R), Pre Out B (R), (L).
*
1 VD power supply and VP power supply must have the same potential.
*
2 In order to avoid the effects of SP, HP amp interference between L and R, and interference between SP
and HP amps on separation characteristics, the wiring connected to this pin should have the same
impedance as other Vcc lines (especially lines with large current). (This is not a problem when Vcc1 and
Vcc2 lines are bundled.)
*
3 In order to avoid the effects of SP, HP amp interference between L and R, and interference between SP
and HP amps on separation characteristics, the wiring connected to this pin should have the same
impedance as other ground lines (especially lines with large current). (This is not a problem when GND1
and GND2 lines are bundled.)
*
4 The maximum voltage that can be impressed on IS IN E Vol. pin is 2.0V.
*
5 The maximum voltage that can be impressed on SP Vol. pin is 2.0V.
*
6 The maximum voltage that can be impressed on HP Vol. pin is 2.0V.
MITSUMI
Audio MM1407
Selects either IS IN A (R) or IS IN B (L).
IS SEL. H A
L B
Selects either Pre Out B (L), (R) Stereo/Mono.
Mono Sel. (L) H Stereo
L Mono
IS Sel. Pin and Mono Sel. (L) Pin Selection
Figure B. Mono Sel. (L) Pin Pre Out B (L) (R) Signal Route during Mono Selection
The signal route when Mono Sel. (L) pin mono is selected is: point 1 L-ch signal
is lowered 9dB and this signal is added at point 3 to point 2 R-ch signal lowered
9dB.
This level is output to Pre Out B (L), (R).
MITSUMI
Audio MM1407
During Mono Sel. 1 pin stereo selection, the signal at point 1
is output to Pre Out B (L) and the signal at point 2 is output
to Pre Out B (R).
Mono Sel. (L) Pin Pre Out B (L) (R) Signal Route during Stereo Selection
Mic-Sel. 0, Mic-Sel. 1 pin selection
1 of 4 Mic 1~4 inputs is selected by Mic-Sel. 0 and Mic-Sel. 1.
Mic-Sel. 0
Mic-Sel. 1
Mic 1
L
L
Mic 2
L
H
Mic 3
H
L
Mic 4
H
H
MITSUMI
Audio MM1407
Figure C. Watchdog Timer
Basically, the watchdog timer monitors the level (3) of the current it impresses on the external capacitor. The
charging time is determined by C1 and I2 in the block diagram, and control is done by input signal (1). When
the first "H" trigger (input signal) chargers the external capacitor and level (3) goes over (4) "H" threshold
value, output is first inverted (L H). While the input signal is being continuously impressed, the timer repeats
charging current impress/stop to the external capacitor, but if input signal (1) is not impressed within the set
time (clock monitoring time), charging to the external capacitors is stopped and the capacitor starts discharge
operation. Then level (3) falls below "L" threshold value and output (5) is again inverted (H L).
1. WAKEUP pin input signal cycle limit
Use at 1/Ta or higher, 100Hz or lower.
T1: clock monitoring time (The time from WAKEUP signal input stop until logic truth table WAKEUP
switches to low.)
2. WAKEUP pin input signal amplitude limit
Use at 1.5V or higher, 5V or lower.
3. External capacitor time constant (sets clock monitoring time)
Determined by T1 = 1.638 C F R [
].
(E.g.: If C = 1F, for T1 .=. 1S, R = 620k
, for T1 .=. 2S, R = 1.2M
)
Watchdog Timer Circuit Block Diagram
MITSUMI
Audio MM1407
#SD
#AMPSD
WAKEUP
HP-IN
CHIP-EN
#SP-EN
#HP-EN
SW
(1)
H
H
EN
EN
EN
OFF
(2)
H
L
EN
EN
DIS
ON
(3)
H
H
L
H
EN
DIS
EN
ON
(4)
H
H
L
L
EN
EN
DIS
ON
(5)
H
L
L
EN
DIS
DIS
ON
(6)
L
L
DIS
DIS
DIS
ON
Logic Truth Table
WAKEUP "H" indicates the state where a pulse is impressed continuously, and "L" means that pulse
impression is stopped and level is low. (See Figure C)
The EN in CHIP-EN means that the audio signal control section in the block diagram is ON, and DIS means
that it is OFF.
The EN in #SP-EN means that the SP signal control section in the block diagram is ON, and DIS means that
it is OFF.
The EN in #HP-EN means that the HP signal control section in the block diagram is ON, and DIS means that
it is OFF.
SW ON and OFF: ON means that SP IN and IS IN E in the SP signal control section in the block diagram are
both operating, and OFF means that IS IN E only is operating.
Item
Signal
Rating
Unit
Storage temperature
T
STG
-40~+125
C
Operating temperature
T
OPR
-20~+75
C
Power supply voltage (AV
CC
)
V
CC
max.1
7
V
Power supply voltage (VP)
V
CC
max.2
7
V
Power supply voltage (VD)
V
CC
max.3
7
V
Input pin voltage (AV
CC
)
V
IN
max.1
-0.3~AV
CC
+0.3
V
Input pin voltage (VP)
V
IN
max.2
-0.3~VP+0.3
V
Input pin voltage (VD)
V
IN
max.3
-0.3~VD+0.3
V
Allowable loss
Pd
680mW (alone)
1.6W (mounted on board)
W
Absolute Maximum Ratings
(Ta = 25C )
*
When used at over 25, there is a 14mW reduction for every 1C.
(Mounting conditions: 40 40 1.6mm. Glass epoxy, board mounting density 30%.)
MITSUMI
Audio MM1407
Recommended Operating Conditions
(Ta = 25C)
Item
Signal
Rating
Unit
Operating temperature
T
OPR
-20~+75
C
Operating voltage (AV
CC
)
V
CC
op1
4.5~5.5
V
Operating voltage (VP)
V
CC
op2
4.5~5.5
V
Operating voltage (VD)
V
CC
op3
4.5~5.5
V
Electrical Characteristics
(Except where otherwise indicated, Ta = 25C, A
VCC
= VP = VD = 5V)
Item
Signal
Measurement conditions
Min. Typ. Max. Unit
Consumption Current
Audio signal control
I
CC
1
For HP AMP, SP AMP OFF
8
12
mA
HP AMP operating
I
CC
2
For Audio ON, SP AMP OFF
18
27
mA
SP AMP operating
I
CC
3
For Audio ON, HP AMP OFF, no load
38
57
mA
During power save
I
CC
4
300
500
A
Audio signal control Hereafter R
L
= 10k, f
IN
= 1kHz
Maximum output voltage
Vmax.1
Line Out (L, R) , Aux Mix (L, R) , Line Mix (L, R)
Mic Out THD = 1%
1
1.1
Vrms
Distortion rate
THD1
Line Out (L, R) , Aux Mix (L, R) , Line Mix (L, R)
Mic Out V
OUT
= 1Vrms
0.1
%
Gain 1
Gv1
Line Out (L, R) , Aux Mix (L, R) , Line Mix (L, R)
0
dB
Gain 2
Gv2
Mic Out
12
dB
Input impedance
R
IN
47
k
Impedance may change during power save, but it will not go below 47k
.
Signal coupling on input pins may be observed.
Output impedance
R
OUT
100
Separation
CS
60
dB
Output offset 1
V
OFF
1
(V
OUT
) - (Vref-V
IN
) 1
8
mV
Output offset 2 (MIC AMP)
V
OFF
2
1
8
mV
R-Rejection
SVRR
fr=100Hz
70
85
dB
Output noise voltage
Vno
20Hz ~ 20kHz, A curve
30
100
Vrms
Phase Relationships
Line in to Line Mix
Inverted
Aux A ~ E to Aux Mix
Inverted
Mic A ~ D to Mic Out
Inverted
IS IN A ~ D to Line Out
Non-inverted
IS IN A ~ D to Pre Out
Non-inverted
IS IN A ~ D to Pre Out phase relationships does not change for Mono Select R Mono or Stereo
MITSUMI
Audio MM1407
Item
Signal
Measurement conditions
Min. Typ. Max. Unit
Headphone AMP Hereafter R
L
= 16
, f
IN
= 1kHz
Maximum output voltage 1
Vmax.hp1
PreOutA (L, R) HP IN (L, R) ,
R
L
= 10k
, THD = 1%
1
1.1
Vrms
Maximum output voltage 2
Vmax.hp2
PreOutA (L, R) HP IN (L, R) ,
R
L
= 16
, THD = 1%
350
mVrms
Distortion rate 1
THDhp1
PreOutA (L, R) HP IN (L, R)
EVR = 0dB V
OUT
= 1Vrms, R
L
= 10k
0.13
0.25
%
Distortion rate 2
THDhp2
PreOutA (L, R) HP IN (L, R)
EVR = 0dB, V
OUT
= 100mVrms, R
L
= 16
1
%
Gain 1
Ghp1
EVR; for max. (Vvol1 = 1.25V)
0
dB
Gain 2
Ghp2
EVR; (Vvol1 = 1.0V)
-20
dB
Gain 3
Ghp3
EVR; (Vvol1 = 0.85V)
-40
dB
Gain 4
Ghp4
EVR; (Vvol1 = 0.75V)
-60
dB
Gain 5
Ghp5
EVR; V
IN
= 0dBV for MIN (Vvol = 0.6V)
Mute when Vvol = 0.6V or below
-80
dB
Output level
temperature characteristic
EVR setting; gain 1
+3000
ppm/C
Between-channel
gain difference 1
CBhp1
EVR setting; gain 1 ~ 2
1
dB
Between-channel
gain difference 2
CBhp2
EVR setting; gain 3 ~ 4
3
dB
R-Rejection
SVRRhp
EVR = 0dB, fr = 100Hz,
V
RIPPLE
= -20dBV
50
65
dB
Output noise voltage
Vnohp
EVR = 0dB, 20Hz~20kHz, A curve
175
Vrms
Separation
CShp
EVR = 0dB, fr = 1kHz
50
65
dB
Speaker AMP Hereafter R
L
= 8
, BTL connected, f
IN
= 1kHz
Maximum output power
Pmax.sp
PreOutB (L, R) SP IN (L, R) ,
THD = 10%, EVR = 20dB
0.7
W
Distortion rate
THDsp
PreOutB (L, R) SP IN (L, R) , EVR = 20dB
P
OUT
= 300mW
1
3
%
Gain 1
Gsp1
EVR; for max. (Vvol = 1.25V)
20
dB
Gain 2
Gsp2
EVR; (Vvol1 = 1.0V)
0
dB
Gain 3
Gsp3
EVR; (Vvol1 = 0.85V)
-20
dB
Gain 4
Gsp4
EVR; (Vvol1 = 0.75V)
-40
dB
Gain 5
Gsp5
EVR; V
IN
= 0dBV for MIN (Vvol = 0.6V)
Mute when Vvol = 0.6V or below
-60
dB
Output level
temperature characteristic
EVR setting; gain 1
+3000
ppm/C
Between-channel
gain difference 1
CBsp1
EVR setting; gain 1 ~ 2
1
dB
Between-channel
gain difference 2
CBsp2
EVR setting; gain 3 ~ 4
3
dB
R-Rejection
SVRRsp
EVR = 20dBV, fr = 100Hz, V
RIPPLE
= -20dBV
38
45
dB
Output offset
V
OFF
sp
IS IN E VOL = min. SP VOL = 20dB
0
150
mV
Output noise voltage
Vnosp
IS IN E VOL = SP VOL = 20dB,
20Hz~20kHz, A curve
560
Vrms
Separation
CSsp
EVR = 20dB, fr = 1kHz
50
65
dB
MITSUMI
Audio MM1407
Measuring Circuit
I
CC
1, I
CC
2, I
CC
3, I
CC
4
MITSUMI
Audio MM1407
Vmax1, THD1, Gv1, Gv2
MITSUMI
Audio MM1407
Voff1, Voff2, SVRR, Vno
MITSUMI
Audio MM1407
CS
MITSUMI
Audio MM1407
Vmaxhp1, Vmaxhp2, THDhp1, THDhp2, Ghp1~5, CBhp1~2
MITSUMI
Audio MM1407
SVRRhp, Vnohp
MITSUMI
Audio MM1407
CShp
MITSUMI
Audio MM1407
Pmaxsp, THDsp, Gsp1~5, CBsp1~2
MITSUMI
Audio MM1407
SVRRsp, Vnosp
MITSUMI
Audio MM1407
Voffsp
MITSUMI
Audio MM1407
CSsp
Measuring Circuit
0.01
0.001
0.01
0.1
1
10
0.1
1
10
V
OUT
(Vrms)
THD (%)
THD Aux-A (L) AuxMix (L)
0.01
0.1
1
10
0.001
0.01
0.1
1
10
V
OUT
(Vrms)
THD (%)
Mic-a Micont
MITSUMI
Audio MM1407
0.01
0.001
0.01
0.1
1
10
0.1
1
10
V
OUT
(Vrms)
THD (%)
Line in A (L) LineMix (L)
0.01
0.001
0.01
0.1
1
10
0.1
1
10
V
OUT
(Vrms)
THD(%)
THD IS IN A (L) LineOUT (L)
EVR=-10dB
EVR=0dB
0.01
0.01
0.1
1
10
100
0.1
1
10
V
OUT
(V)
THD (%)
THD IS IN A (L) Per Out A (L) HP IN (L) HP (L) R
L
=16
EVR=0dB
0.01
0.01
0.1
1
10
0.1
1
10
V
OUT
(Vrms)
THD (%)
THD IS IN A (L) Per Out A (L) HP IN (L) HP (L) R
L
=10k
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
-100
-80
-60
-40
-20
0
20
Vvo1 (V)
Gain (dB)
EVR-GAIN HP AMP
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
10
20
30
40
50
60
70
80
90
Noise (
Vrms)
HP Vol. (V)
EVR-NOISE HP AMP
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
-100
-80
-60
-40
-20
0
20
40
Vvo1 (V)
Gain (dB)
EVR-GAIN SP AMP
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
100
110
120
130
140
150
160
170
180
190
SP Vol. (V)
Noise (
Vrms)
EVR-NOISE SP AMP (IS IN E Vol. = 1.25V, SP Vol. Variable)
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