MITSUBISHI SOUND PROCESSOR ICs
M62431FP
7-ELEMENT GRAPHIC EQUALIZER WITH MICROCOMPUTER INTERFACE
DESCRIPTION
The M62431FP is 2-channel 7-band graphic equalizer IC developed for home audio, car audio sets, etc. This
IC can be control by serial data from microcomputer.
FEATURES
Be able to operate with serial data from microcomputer
Can be gaining control of 7-band (±10dB and 2dB steps)
Power supply is single power supply or ± power supplies
Low nose VNO (flat)=5µVrms (typ)<JIS-A>
Low distortion THD=0.005% (typ)<HPF400Hz, LPF30kHz>
RECOMMENDED OPERATING CONDITION
Supply voltage range............AVDD, AVss=±4.5 to ±7.0V
(2 power supplies)
Or, AVDD=9 to 14V
(Single power supply AVss=0V)
DVDD=4.5 to 5.5V
(However, DVDD≤AVDD)
SYSTEM CONFIGURATION
TONE CONTROL
Rch IN Rch OUT
Outline 56P6N-A
0.8mm pitch QFP
(14.0mmX10.0mmX2.8mm)
7-ELEMENT GRAPHIC EQUALIZER
Lch IN Lch OUT
µ-COM INTERFACE
CLK LATCH
DATA
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MITSUBISHI SOUND PROCESSOR ICs
PIN CONFIGURATION (TOP VIEW)
4546474849505152535455562827262524232221201918
17
2
IC INTERNAL BLOCK DIAGRAM
M62431FP
7-ELEMENT GRAPHIC EQUALIZER WITH MICROCOMPUTER INTERFACE
F2I2
F1R2
F1O2
F1I2
IN2
REF IN
F7R2
OUT2
DGND
LATCH
DATA
CLOCK
M62431FP
AVDD1
IN1
F1I1
F1O1
F1R1
F2I1
Outline 56P6N-A
F2O2 F2R2 F3I2 F3O2 F3R2 F4I2 F4O2 F4R2 F5I2 F5O2 F5R2 F6I2 F6O2 F6R2 F7I2 F7O2
44
AVDD2
AVSS
S OUT
DVDD
OUT1
F7R1
NC:NO CONNECTION
2943 42 41 40 39 38 37 36 35 34 33 32 31 30
F2I2
F1R2
F1O2
F1I2
IN2
REF IN
AVDD1
IN1
F1I1
F1O1
F1R1
F2I1
45
46
2k
47
68k
48
49
50
51
52
53
54
55
56
GE1
70k
AVSS
40k
40k
AVDD
70k
GE1
68k
2k
1 162 3 4 5 6 7 8 9 10 11 12 13 14 15
GE2 GE3 GE4 GE5 GE6 GE7
12k
CH2
CH1
12k
12k
12k
GE2 GE3 GE4 GE5 GE6 GE7
COMPUTER
INTERFACE
F2O1 F2R1 F3I1 F3O1 F3R1 F4I1 F4O1 F4R1 F5I1 F5O1 F5R1 F6I1 F6O1 F6R1 F7I1 F7O1
MICRO-
28
27
26
25
24
23
22
21
20
19
18
17
F7R2
OUT2
DGND
LATCH
DATA
CLOCK
AVDD2
AVSS
S OUT
DVDD
OUT1
F7R1
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MITSUBISHI SOUND PROCESSOR ICs
RECOMMENDED OPERATING CONDITION (Ta=25 ˚C, unless otherwise noted)
M62431FP
7-ELEMENT GRAPHIC EQUALIZER WITH MICROCOMPUTER INTERFACE
ABSOLUTE MAXIMUM RATINGS
Symbol Ratings Unit
AVDD, AVSS
DVDD
Pd
K
Topr
Tstg
Analog supply voltage
Digital supply voltage 7.0
Power dissipation
Thermal derating
Operating temperature
Storage temperature
Parameter
Conditions
Ta≤25˚C
Ta>25˚C
Equipped with standard board (Note 2)
14.6 (single) ±7.3 (± supply)
1000
10.0
-20 to +60
-40 to +125 ˚C
V
V
mW
mW/˚C
˚C
Symbol
AVDD
AVSS
DVDD
VIH
VIL
Note 1.When the IC use ± power supplies, the first, provide to AVDD the supply voltage, and then provide to AVSS.
2.Standard circuit board.
Analog positive supply voltage
Analog negative supply voltage
Digital supply voltage
Logic "H" level input voltage
Logic "L" level input voltage
The DVDD voltage must not supply before the analog supply voltage provide.
•board size : 70mm X 70mm
•board thickness : 1.6mm
•board material : Glass epoxy
Parameter
Test conditions
Note 1
Note 1
DVDD≤AVDD
DVDD=5V
DVDD=5V
•copper pattern
copper thickness: 18µm
copper size : 0.25mm (width) X 25mm (length/lead)
RELATIONSHIPS BETWEEN DATA AND CLOCK
H
DATA
L
H
CLOCK
L
LATCH SIGNAL
DVDDX0.8
0
Limits
–
–
D0"D9D8D1D0
Max.Typ.Min.
7.06.04.5
-7.0-6.0-4.5
5.55.04.5
DVDD
DVDDX0.2
Unit
V
V
V
V
V
H
LATCH
SOUT
Reads data signal at the rising edge of the clock.
Can be latch the data signal at the rising edge of the LATCH signal.
L
H
D1^D0^ D9^ D0 D1
L
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ELECTRIC
Clock signal is invalid
when LATCH=H.
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7-ELEMENT GRAPHIC EQUALIZER WITH MICROCOMPUTER INTERFACE
TIMINGS OF CLOCKS AND DATA
MITSUBISHI SOUND PROCESSOR ICs
M62431FP
tcr
CLOCK
DATA
LATCH
75%
25%
tr tf
tWHC tWLC
75%
25%
tr tftSD tHD
DEFINITION OF TIMING IN DIGITAL PART
1.6
1.6
0.8
0.8
1.0
Limits
Max.Typ.Min.
––4.0
––
––
–
–
–
0.4
–
0.4
–
–
–
–
–
–
––1.6
Symbol Unit
tcr
tWHC
tWLC
tr
tf
tSD
tHD
tSL
tWHL
CLOCK cycle time
CLOCK pulse width ("H" level)
CLOCK pulse width ("L" level)
Rising time of CLOCK, DATA, LATCH
Falling time of CLOCK, DATA, LATCH
DATA setup time
DATA hold time
LATCH setup time
LATCH pulse width
Parameter
µsec
µsec
µsec
µsec
µsec
µsec
µsec
µsec
µsec
tSL
tr tf
tWHC
75%
25%
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7-ELEMENT GRAPHIC EQUALIZER WITH MICROCOMPUTER INTERFACE
DATA INPUT FORMAT
The 7-band tone control can be set by changing the Band setting
of D8/D9.
(Initialize all data when power supply is turned on.)
Input direction
D0 D1 D2 D3 D4 D5 D6 D7 D8 D9
Tone control setting 1 Tone control setting 2 Band setting
MITSUBISHI SOUND PROCESSOR ICs
M62431FP
(1) Tone control setting table (Gains)
(Settings except for the settings below are inhibited.)
Tone setting D0/D4 D1/D5 D2/D6 D3/D7
0dB
+2dB
+4dB
+6dB
+8dB
+10dB
0dB
-2dB
-4dB
-6dB
-8dB
-10dB
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
(2) Band setting table
Setting 1 Setting 2 D8 D9
GE 1 GE 2 0 0
GE 3 GE 4 0 1
GE 5 GE 6 1 0
GE 7 – 1 1
ELECTRICAL CHARACTERISTICS
(Ta=25˚C, AVDD=6.0V, AVSS=-6.0V, DVDD=5.0V, f=1kHz, unless otherwise noted. Tone control bass boost is set to 0dB.)
Symbol Test conditions
AIDD
AISS
DIDD
Rin
VIM
Vodc
Gv
Vono
THD
CT Channel crosstalk
Gboost
Gcut
BALton
Analog positive power circuit current
Analog negative power circuit current mA
Digital power circuit current
Input resistance
Maximum input voltage
Output pin voltage
Output noise voltage
Distortion
Tone control voltage gain
Channel balance
Parameter
No signal provided
No signal provided
No signal provided
RL=10kΩ, THD=1%
JIS-A filter
No signal provided Rg=10kΩ
FLAT
Vo=0.5Vrms, RL=10kΩ
10dB
-10dB
Each boost is +10, -10dB
with f=1kHz, Vo=1Vrms
f=1kHz, Vo=1Vrms
-11.5
Limits
Min. Typ.
15
-45
0.05 1.2
3.0
-0.3
-2.0
–
–
–
8.5
-1.5
30 45
-30
0.3
70 12035 kΩ
3.5
5.0 10.0
0.005 0.05
-100
10 11.5
10
Max.
-15
–
0.3
0
0 2.0Transmission gain
-70
-8.5
0 +1.5
Unit
mA
mA
Vrms
V
dB
µVrms
%
dB
dB
dB
dB
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THERMAL DERATING (MAXIMUM RATING)
TYPICAL CHARACTERISTICS
R1R2R3
FRFOFI
2
R1C1L
MITSUBISHI SOUND PROCESSOR ICs
M62431FP
7-ELEMENT GRAPHIC EQUALIZER WITH MICROCOMPUTER INTERFACE
1.5
1.0
0.5
0
25 50 75 150
0
AMBIENT TEMPERATURE Ta (˚C)
FUNCTION DESCRIPTION
(1)Tone control circuit block
C1
60
650mW
100
(Note 1) Standard board
Size of printed circuit board
70mm X 70mm
Thickness of printed circuit board
1.6mm
Material of printed circuit board
Glass epoxy
Single-side Cu pattern
Thickness of Cu
18µm
Size of Cu pattern
0.25mm (Width) X 25mm (length)/lead
125
C2
Fig.1 Resonance circuit
Center frequency
fo=1/2π C1•C2•R1•R2 [Hz]
Q= C2•(R1•R2) / C1•(R1+R3)
(Example) In mid-band (f=1kHz)
R1=2kΩ, R2=68kΩ
C1=3900pF, C2=0.047µF
Fig.2 Equivalent circuit using L
Figure 1 is equivalent to Figure 2. Part constants are converted by
the below expression.
L=C2•R1•R2
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APPLICATION EXAMPLE
(Single power supply used)
MITSUBISHI SOUND PROCESSOR ICs
M62431FP
7-ELEMENT GRAPHIC EQUALIZER WITH MICROCOMPUTER INTERFACE
2700pF
(fo=16kHz)
270pF
6800pF
(fo=6.3kHz)
680pF
0.022µF
(fo=2.2kHz)
1800pF
OUTPUT 2
10µF
28 27 26 25 24 23 22 21 20 19 18 17
29
30
31
32
33
34
35
36
37
GE7
GE6
GE5
GE4
MCU
12k
MICROCOMPUTER
INTERFACE
12k
AVDD2=+12V
12k
DVDD=+5V
S OUT
12k
OUTPUT 1
10µF
GE7
GE6
GE5
GE4
16
15
14
13
12
11
10
9
8
2700pF
(fo=16kHz)
270pF
6800pF
(fo=6.3kHz)
680pF
0.022µF
(fo=2.2kHz)
1800pF
0.047µF
(fo=1kHz)
3900pF
0.12µF
(fo=400Hz)
0.01µF
0.47µF
(fo=134Hz)
0.022µF
38
GE3
39
40
41
42
43
44
GE2
CH2 CH1
GE1 GE1
68k2k
45 46 47 48 49 50 51 52 53 54 55 56
0.47µF 0.12µF
(fo=57Hz)
AVSS
70k 70k
2.2µF
INPUT 2
AVDD1=+12V
40k40k
4.7µF
AVDD
INPUT 1
68k 2k
2.2µF
0.12µF 0.47µF
(fo=57Hz)
GE3
GE2
0.047µF
7
(fo=1kHz)
3900pF
6
5
0.12µF
4
(fo=400Hz)
0.01µF
3
2
0.47µF
1
(fo=134Hz)
0.022µF
Units Resistance :Ω
Capacitance:F
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