Datasheet MM1407 Datasheet (MITSMI)

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 VCC = 5.0V, RL = 8Ω)

(2) Electronic volume control (

THD1 = 0.5% (when V
THD2 = 0.1% (when V

(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
(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 300µA during power save mode.

-

60 ~ +20dB). THD = 0.5% (when POUT = 300mW, RL = 8Ω)

OUT = 100mVrms, RL = 16Ω)
OUT = 1VmVrms, RL = 10kΩ)

OUT = 1Vrms, RL = 10kΩ)

Package

QFP-80B

Applications

(1) Notebook PC audio control

MITSUMI

Block Diagram

Audio signal control section
(Except where otherwise indicated amp gain is 0dB.)

Audio MM1407

MITSUMI

Audio MM1407

HP signal control section

SP signal
control
section

Digtal signal
control section

MITSUMI

Pin Description

Audio MM1407

60 57 5559 58 56 53952

54

61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80

13 762458

105111501249134814471546164517441843194220

QFP-80B

41

40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21

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

CC1 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
6 Aux A (L) 26 Line out (R) 46 VP2 66 Mic
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
9 Line in A (L) 29 Mono SEL 49 GND1 69 Mic

10 Line Mix (L) 30 Cap 50 GND2 70 Mic

-

sel 0

-

sel 1

-

2

-

4

-

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
15 Aux Mix (R) 35 DGND 55 SP (L)
16 Aux A (R) 36 VD 56 PGND4 76 AV

-

IN 54 VP4 74 Pre out A (L)

-

75 Line out (L)

CC

17 Aux B (R) 37 Vref (P)-IN 57 VCC2 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)

MITSUMI

Pin Description

Audio MM1407

Pin No.

Pin name

1 Vref

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)

8

Line In B (L)

9

Line In A (L)

10

Line Mix (L)

11 AGND1 GND Audio signal control
12

Line Mix (R)

13

Line In A (R)

14

Line In B (R)

15

Aux Mix (R)

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

22 IS IN B (R) Input Audio signal control

23 IS IN C (R) Input Audio signal control

24 IS IN D (R) Input Audio signal control

25 IS Sel. Input (SW) Audio signal control

26

Line Out (R)

27

Pre Out A (R)

28

Pre Out B (R)

29 Mono Sel. Input (SW) Audio signal control

30 Cap

31 WAKEUP
32 AMPSD
33 SD

-

IN

Input/Output

Power supply
(reference)

Output Audio signal control Signal with Aux A ~ E (L) input added is output.

Input Audio signal control 1 of 2 Line In (L) (add amp) inputs.
Input Audio signal control 1 of 2 Line In (L) (add amp) inputs.

Output Audio signal control Signal with Aux A ~ B (L) input added is output.

Output Audio signal control Signal with Aux A ~ B (L) input added is output.

Input Audio signal control 1 of 2 Line In (R) (add amp) inputs.
Input Audio signal control 1 of 2 Line In (R) (add amp) inputs.

Output Audio signal control Signal with Aux A ~ E (R) input added is output.

Output Audio signal control

Output Audio signal control

Output Audio signal control

Input (logic)

Input (logic)
Input (logic)
Input (logic)

Section Function

Audio signal control Applies audio signal control reference potential.

Audio signal control ground pin. (except for Mic amp)

1 pin of 4 amp inputs that output to Line Out (R), Pre Out
A (R), Pre Out B (R), (L).
1 pin of 4 amp inputs that output to Line Out (R), Pre Out
A (R), Pre Out B (R), (L).
1 pin of 4 amp inputs that output to Line Out (R), Pre Out
A (R), Pre Out B (R), (L).
1 pin of 4 amp inputs that output to Pre Out A (R), Pre
Out B (R), (L).
This pin selects either of two inputs IS IN A (R) or IS IN
B (R). (See Figure A)
A signal that has IS IN A (R) or B (R) or IS IN C (R)
added is output.
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 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.
This pin switches Pre Out B (L), (R) Stereo and Mono
output. (See Figure A)
This pin sets clock monitoring time for the watchdog timer

Digital signal control

Digital signal control 1 of 4 logic circuit inputs. (See Figure D)
Digital signal control 1 of 4 logic circuit inputs. (See Figure D)
Digital signal control 1 of 4 logic circuit inputs. (See Figure D)

circuit. Clock monitoring time is determined by the capacitor
time constant connected to this pin. (See Figure C)

MITSUMI

Audio MM1407

Pin No.

Pin name

34 HP
35 DGND GND
36 VD

37 Vref

38 SP IN (R) Input SP signal control

39 IS IN E (R) Input SP signal control

40 HP IN (R) Input HP signal control HP amp (R
41 HP (R) Output HP signal control HP amp (R

42 V

43 PGND1 GND
44 SP (R) + Output SP signal control SP amp (R
45 VP1
46 VP2
47 SP (R)
48 PGND2 GND

49 GND1 GND

50 GND2 GND

51 PGND3 GND
52 SP (L) + Output SP signal control SP amp (L
53 VP3
54 VP4
55 SP (L)
56 PGND4 GND

57 V

58 HP (L) Output HP signal control HP amp (R
59 IS IN E Vol. Input SP signal control SP amp IS IN E input electronic volume pin. (
60 SP Vol. Input SP signal control SP amp SP IN input electronic volume pin. (
61 HP IN (L) Input HP signal control HP amp (L

62 IS IN E (L) Input SP signal control

63 SP IN (L) Input SP signal control

64 HP Vol. Input HP signal control HP amp electronic volume pin. (

65 Mic

66 Mic

67 Mic
68 Mic
69 Mic
70 Mic

71 Mic

-

-

(P) IN

CC1

CC2

-

Sel.0 Input Audio signal control

-

Sel.1 Input Audio signal control

-

Input/Output

IN

Input (logic) Digital signal control

Power supply
Power supply
(reference)

Power supply

Power supply
Power supply

-

Output SP signal control SP amp (R-ch) BTL output (-) pin.

Power supply
Power supply

-

Output SP signal control SP amp (L-ch) BTL output (-) pin.

Power supply

-

1 Input Audio signal control 1 of 4 Mic amp inputs.

-

2 Input Audio signal control 1 of 4 Mic amp inputs.

-

4 Input Audio signal control 1 of 4 Mic amp inputs.

-

3 Input Audio signal control 1 of 4 Mic amp inputs.

Out Output Audio signal control

Section Function

1 of 4 logic circuit inputs. (See Figure D)
Digital signal control
Digital signal control

SP, HP signal control Applies SP, HP signal control section reference potential.

SP, HP signal control

SP, HP signal control

SP, HP signal control
SP, HP signal control

SP, HP signal control

SP, HP signal control

SP, HP signal control

SP, HP signal control

SP, HP signal control
SP, HP signal control

SP, HP signal control

SP, HP signal control

Digital signal control ground pin.

Digital signal control Vcc pin. (*1)

1 of 2 SP amp (R

input.

1 of 2 SP amp (R

input.

SP, HP amp input stage, EVR circuit, DC bias circuit VCC

pin. (*2)

SP, HP amp output stage (power amp) ground pin.

SP, HP amp output stage (power amp) VCC pin.

SP, HP amp output stage (power amp) VCC pin.

SP, HP amp output stage (power amp) ground pin.

SP, HP amp input stage, EVR circuit, DC bias circuit

ground pin. (

SP, HP amp input stage, EVR circuit, DC bias circuit

ground pin. (

SP, HP amp output stage (power amp) ground pin.

SP, HP amp output stage (power amp) VCC pin.

SP, HP amp output stage (power amp) VCC pin.

SP, HP amp output stage (power amp) ground pin.

SP, HP amp input stage, EVR circuit, DC bias circuit Vcc

pin. (

1 of 2 SP amp (L

input.

1 of 2 SP amp (L

input.

Selects 1 of 4 Mic amp inputs in combination with Mic-

Sel. 1 pin. (See Figure E)

Selects 1 of 4 Mic amp inputs in combination with Mic-

Sel. 0 pin. (See Figure E)

1 of 4 Mic 1 ~ 4 inputs is output depending on

combination of Mic Sel. 0 and Mic Sel. 1 pins.

2)

*

-

ch) inputs. Use music source, etc.

-

ch) inputs. Use beep alarm sound, etc.

-

ch) input.

-

ch) output.

-

ch) BTL output (+) pin.

3)

*

3)

*

-

ch) BTL output (+) pin.

-

ch) output pin.

-

ch) input.

-

ch) inputs. Use beep alarm sound, etc.

-

ch) inputs. Use music source, etc.

6)

*

4)

*

5)

*

MITSUMI

Audio MM1407

Pin No.

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

*

3 In order to avoid the effects of SP, HP amp interference between L and R, and interference between SP

*

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.

*

Pin name

72 AGND2 GND Audio signal control Mic amp ground pin.

73

Pre Out B (L)

74

Pre Out A (L)

75

Pre Out (L)

76 AV

77 IS IN D (L) Input Audio signal control

78 IS IN C (L) Input Audio signal control

79 IS IN B (L) Input Audio signal control

80 IS IN A (L) Input Audio signal control

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.)

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.)

Input/Output

Output Audio signal control

Output Audio signal control

Output Audio signal control

CC Audio signal control Audio signal control VCC pin.

Section Function

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)

A signal that has IS IN A (R) or B (R) or IS IN C (R) or

IS IN D (R) added is output.

A signal that has IS IN A (R) or B (R) or IS IN C (R)

added is output.

1 of 4 amp inputs that is output to Pre Out A (R) or Pre

Out B (R), (L).

1 of 4 amp inputs that is output to Line Out (R) or Pre

Out A (R), Pre Out B (R), (L).

1 of 4 amp inputs that is output to Line Out (R) or Pre

Out A (R), Pre Out B (R), (L).

1 of 4 amp inputs that is output to Line Out (R) or Pre

Out A (R), Pre Out B (R), (L).

MITSUMI

IS Sel. Pin and Mono Sel. (L) Pin Selection

Selects either IS IN A (R) or IS IN B (L).

IS SEL. H A

L B

Audio MM1407

Selects either Pre Out B (L), (R) Stereo/Monaural.

Mono Sel. (L) H Stereo

L Monaural

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).

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Mono Sel. (L) Pin Pre Out B (L) (R) Signal Route during Stereo Selection

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).

Audio MM1407

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

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Figure C. Watchdog Timer

Audio MM1407

Watchdog Timer Circuit Block Diagram

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 µF R [Ω].

(E.g.: If C = 1µF, for T1 .=

1S, R = 620kΩ, for T1

.

.
=

2S, R = 1.2MΩ)

.

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Audio MM1407

Logic Truth Table

#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

· 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.

Absolute Maximum Ratings

Item Signal Rating Unit

Storage temperature T

Operating temperature T

Power supply voltage (AV

Power supply voltage (VP) V

Power supply voltage (VD) V

Input pin voltage (AV

Input pin voltage (VP) V

Input pin voltage (VD) V

Allowable loss Pd

When used at over 25, there is a 14mW reduction for every 1°C.

*

(Mounting conditions: 40 40 1.6mm. Glass epoxy, board mounting density 30%.)

CC) VINmax.1

(Ta = 25°C )

STG

OPR

CC) VCCmax.1 7 V

CCmax.2 7 V

CCmax.3 7 V

INmax.2

INmax.3

-

40~+125 °C

-

20~+75 °C

-

0.3~AVCC+0.3 V

-

0.3~VP+0.3 V

-

0.3~VD+0.3 V

680mW (alone)

1.6W (mounted on board)

W

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Audio MM1407

Recommended Operating Conditions

(Ta = 25°C)

Item Signal Rating Unit

Operating temperature T

Operating voltage (AV

Operating voltage (VP) V

Operating voltage (VD) V

Electrical Characteristics

CC) VCCop1 4.5~5.5 V

(Except where otherwise indicated, Ta = 25°C, AVCC = VP = VD = 5V)

OPR

CCop2 4.5~5.5 V

CCop3 4.5~5.5 V

-

20~+75 °C

Item Signal Measurement conditions Min. Typ. Max. Unit

Consumption Current

Audio signal control I

HP AMP operating I
SP AMP operating I
During power save I

Audio signal control Hereafter R

Maximum output voltage Vmax.1

Distortion rate THD1

Gain 1 Gv1

CC1 For HP AMP, SP AMP OFF 8 12 mA
CC2 For Audio ON, SP AMP OFF 18 27 mA
CC3 For Audio ON, HP AMP OFF, no load 38 57 mA
CC4 300 500 µA

L = 10k, fIN = 1kHz

Line Out (L, R) , Aux Mix (L, R) , Line Mix (L, R)

Mic Out THD = 1%

1 1.1 Vrms

Line Out (L, R) , Aux Mix (L, R) , Line Mix (L, R)

Mic Out VOUT = 1Vrms

Line Out (L, R) , Aux Mix (L, R) , Line Mix (L, R)

Gain 2 Gv2 Mic Out 12 dB

Input impedance R

IN 47 kΩ

Impedance may change during power save, but it will not go below 47k Ω.

Signal coupling on input pins may be observed.

Output impedance R

OUT 100 Ω

Separation CS 60 dB

Output offset 1 V

Output offset 2 (MIC AMP) V

OFF1(VOUT)
OFF218mV

-

(Vref-VIN) 1 8 mV

R-Rejection SVRR fr=100Hz 70 85 dB

Output noise voltage Vno 20Hz ~ 20kHz, A curve 30 100

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

0.1 %

0dB

µVrms

MITSUMI

Item Signal Measurement conditions Min. Typ. Max. Unit

Headphone AMP Hereafter R

Maximum output voltage 1 Vmax.hp1

Maximum output voltage 2 Vmax.hp2

Distortion rate 1 THDhp1

Distortion rate 2 THDhp2

Gain 1 Ghp1 EVR; for max. (Vvol1 = 1.25V) 0 dB
Gain 2 Ghp2 EVR; (Vvol1 = 1.0V)
Gain 3 Ghp3 EVR; (Vvol1 = 0.85V)
Gain 4 Ghp4 EVR; (Vvol1 = 0.75V)

Gain 5 Ghp5

Output level

temperature characteristic

Between-channel

gain difference 1

Between-channel

gain difference 2

R-Rejection SVRRhp

Output noise voltage Vnohp EVR = 0dB, 20Hz~20kHz, A curve 175

Separation CShp EVR = 0dB, fr = 1kHz 50 65 dB

Speaker AMP Hereafter R

L = 8Ω, BTL connected, fIN = 1kHz

Maximum output power Pmax.sp

Distortion rate THDsp

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)
Gain 4 Gsp4 EVR; (Vvol1 = 0.75V)

Gain 5 Gsp5

Output level

temperature characteristic

Between-channel

gain difference 1

Between-channel

gain difference 2

R-Rejection SVRRsp

Output offset V

Output noise voltage Vnosp

Separation CSsp EVR = 20dB, fr = 1kHz 50 65 dB

Audio MM1407

L = 16Ω, fIN = 1kHz

PreOutA (L, R) HP IN (L, R) ,

R

L = 10kΩ, THD = 1%

PreOutA (L, R) HP IN (L, R) ,

L = 16Ω, THD = 1%

R

PreOutA (L, R) HP IN (L, R)

EVR = 0dB V

OUT = 1Vrms, RL = 10kΩ

PreOutA (L, R) HP IN (L, R)

EVR = 0dB, V

EVR; V

OUT = 100mVrms, RL = 16Ω

IN = 0dBV for MIN (Vvol = 0.6V)

Mute when Vvol = 0.6V or below

EVR setting; gain 1

1 1.1 Vrms

350

mVrms

0.13 0.25 %

1%

-

20 dB

-

40 dB

-

60 dB

-

80 dB

+3000

ppm/

CBhp1 EVR setting; gain 1 ~ 2 ±1 dB

CBhp2 EVR setting; gain 3 ~ 4 ±3 dB

EVR = 0dB, fr = 100Hz,

V

RIPPLE =

-

20dBV

50 65 dB

µVrms

PreOutB (L, R) SP IN (L, R) ,

THD = 10%, EVR = 20dB

PreOutB (L, R) SP IN (L, R) , EVR = 20dB

POUT = 300mW

EVR; V

IN = 0dBV for MIN (Vvol = 0.6V)

Mute when Vvol = 0.6V or below

EVR setting; gain 1 +3000

0.7 W

13%

-

20 dB

-

40 dB

-

60 dB

ppm/°C

CBsp1 EVR setting; gain 1 ~ 2 ±1 dB

CBsp2 EVR setting; gain 3 ~ 4 ±3 dB

EVR = 20dBV, fr = 100Hz, V

OFFsp IS IN E VOL = min. SP VOL = 20dB 0 150 mV

IS IN E VOL = SP VOL = 20dB,

20Hz~20kHz, A curve

RIPPLE

= -20dBV

38 45 dB

560

µVrms

°C

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Measuring Circuit

ICC1, ICC2, ICC3, ICC4

Audio MM1407

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Vmax1, THD1, Gv1, Gv2

Audio MM1407

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Voff1, Voff2, SVRR, Vno

Audio MM1407

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CS

Audio MM1407

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Vmaxhp1, Vmaxhp2, THDhp1, THDhp2, Ghp1~5, CBhp1~2

Audio MM1407

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SVRRhp, Vnohp

Audio MM1407

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CShp

Audio MM1407

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Pmaxsp, THDsp, Gsp1~5, CBsp1~2

Audio MM1407

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SVRRsp, Vnosp

Audio MM1407

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Voffsp

Audio MM1407

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0.01

0.001

0.01

0.1

1

10

0.1 1 10

VOUT (Vrms)

THD (%)

0.01 0.1

1

10

0.001

0.01

0.1

1

10

VOUT (Vrms)

THD (%)

CSsp

Audio MM1407

Measuring Circuit

THD Aux-A (L) AuxMix (L)

Mic-a Micont

MITSUMI

0.01

0.001

0.01

0.1

1

10

0.1 1 10

VOUT (Vrms)

THD (%)

0.01

0.001

0.01

0.1

1

10

0.1 1 10

VOUT (Vrms)

THD(%)

EVR=-10dB

EVR=0dB

0.01

0.01

0.1

1

10

100

0.1 1 10

VOUT (V)

THD (%)

EVR=0dB

0.01

0.01

0.1

1

10

0.1 1 10

VOUT (Vrms)

THD (%)

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)

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 (µVrms)

HP Vol. (V)

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)

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 (µVrms)

Audio MM1407

Line in A (L) LineMix (L)

THD IS IN A (L) Per Out A (L) HP IN (L) HP (L) R

L

=16Ω

THD IS IN A (L) LineOUT (L)

THD IS IN A (L) Per Out A (L) HP IN (L) HP (L) R

L

=10kΩ

EVR-GAIN HP AMP

EVR-GAIN SP AMP

EVR-NOISE HP AMP

EVR-NOISE SP AMP (IS IN E Vol. = 1.25V, SP Vol. Variable)