M61528FP
SCF TYPE FIXED EQUALIZER FOR CAR AUDIO
REJ03F0040-0101Z
Rev.1.1
Dec.17.2003
Features
•
Fixed equalizer(3 bands equalizer with SCF)
4 independent fixed equalizer controls.
Reduce the external C,R parts by using SCF (Switched Capacitor Filter) technology.
•
FADER
4 independent fader controls.
0dB to –50dB/2dBstep, -∞dB
Built-in Soft-changing circuit for switching-noise.
Application
•
Car Audio
Recommended Operating Condition
•
Supply voltage range 7.0V to 9.0V
•
Rated
supply voltage 8.0V
System Configurations
Fixed Equalizer
FL IN
FADER
FR-ch
FRIN
FADER
RL-ch
RLIN
FADER
RR-ch
RRIN
FADER
FL-ch
Power supply
Microcomputer interface
OSC
SACTIVE
CLOC K
VREF
VCC
GND
DATA
Rev.1.1, Dec.17.2003, page 1 of 30
OSCR
M61528FP
Function
•
Fixed equalizer
Frequency
range
Low
Mid
High
Center frequency f0[Hz]
120, 150, 200, 300
800, 1.2K, 1.5K, 2K, 3K
8K, 10K, 18K
Control range
0dB to –8dB / 0.5dB step
+4dB to –8dB / 0.5dB step
+8dB to –8dB / 0.5dB step
Quality factor Q
FRONT : 1.5 to 3.0 / 0.5 step
REAR : 2.0 to 4.0 / 0.5 step
0.8 to 2.0 / 0.2 step
0.4 to 1.0 / 0.2 step
Note.
4 independent
each equalizer
controls.
•
FADER
0dB to –50dB / 2dB , -∞dB ( 4 independent fader controls )
The Soft-changing can work in gain step by 2dB.
Refer to 15 page for Soft-changing.
Pin configuration(top view)
VREFIN
GND
FLIN
FRIN
RLIN
RRIN
DGND
TEST
NC
NC
NC
OSCR
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
VCC
FLOUT
FROUT
RLOUT
RROUT
GND
DGND
DATA
CLOCK
SACTIVE
OSCIN
OSCOUT
Outline 24pin SSOP
Rev.1.1, Dec.17.2003, page 2 of 30
M61528FP
Pin Description
Pin No.
3
4
5
6
23
22
21
20
2,19
7,18
24
1
8
15
14
13
12
17
16
9 to 11
Name
FLIN
FRIN
RLIN
RRIN
FLOUT
FROUT
RLOUT
RROUT
GND
DGND
VCC
VREFIN
TEST
SACTIVE
OSCIN
OSCOUT
OSCR
DATA
CLOCK
N.C
Function
Input pin of FRONT L channel
Input pin of FRONT R channel
Input pin of REAR L channel
Input pin of REAR R channel
Output pin of FRONT L channel
Output pin of FRONT R channel
Output pin of REAR L channel
Output pin of REAR R channel
Analog ground pin
Digital ground pin
Power supply pin
Signal ground of IC
TEST pin
Output pin of soft-changing ACTIVE signal
Buffer input pin for the ceramics oscillation
Buffer output pin for the ceramics oscillation
Input pin for the inside oscillation
Input pin of Serial DATA
Input pin of CLOCK
Non – connection pin
Absolute Maximum Ratings
Symbol
VCC
Pd
K
Topr
Tstg
Parameter
Power supply
Power dissipation
Thermal derating
Operating temperature
Storage temperature
Ta
≤
25 °C
Ta
>
25 °C (Circuit board installation)
Condition
Ratings
10.5
1.0
10
-30 to +85
-55 to +125
Unit
V
W
mW/°C
°C
°C
Recommended Operating Conditions
Ratings
Symbol
VCC
VIH
VIL
Parameter
Power supply
Logic “H” level input voltage(16,17pin)
Logic “L” level input voltage(16,17pin)
MIN
7.0
2.7
GND
TYP
8.0
—
—
MAX
9.0
5.0
0.7
V
Unit
Rev.1.1, Dec.17.2003, page 3 of 30
M61528FP
Thermal derating
1.2
1.0
POWER DISSIPATION pd (W)
0.8
0.6
0.4
0.2
0
-40
0
40
85
80
120
150
AMBIENT TEMPERATURE Ta (˚C)
Rev.1.1, Dec.17.2003, page 4 of 30
M61528FP
Electrical Characteristics
Unless otherwise noted, VCC=8V, Ta=25
°C,Vi=1Vrms,
f=1KHz, Fixed EQ(Low/Mid/High)=0dB, FADER=0dB,
RL=10K
Ω,
Limits
Symbol
Icc
Gv
Sc
Parameter
Circuit current
Pass gain
Channel separation
Condition
No signal
20Hz to 20KHz
Input side: Vi=1Vrms , f=1KHz,
Measurement side: Input pin to GND
with the capacitance DIN-AUDIO
400Hz to 30KHz BPF
THD=1%
400Hz to 30KHz BPF
Input pin to GND with the capacitance,
DIN-AUDIO
Input pin to GND with the capacitance,
DIN-AUDIO,FADER=-∞dB
3 , 4 , 5 , 6 pin
Gv=-8dB,f0=300Hz,Q=2.0
Vi=1Vrms,f=300Hz
Gv=-8dB,f0=120Hz,Q=2.0
Gv=-8dB,f0=150Hz,Q=2.0
Gv=-8dB,f0=200Hz,Q=2.0
Q
Quality factor
Gv=-8dB,f0=300Hz,Q=2.0
1.5 Gv=-8dB,f0=300Hz,Q=1.5
(FRONT only)
Gv=-8dB,f0=300Hz,Q=2.0
Gv=-8dB,f0=300Hz,Q=2.5
Gv=-8dB,f0=300Hz,Q=3.0
Gv=-8dB,f0=300Hz,Q=3.5 (REAR
only)
Gv=-8dB,f0=300Hz,Q=4.0 (REAR
only)
min
—
-2.0
70
typ
40
0
85
max
55
-2.0
—
Unit
mA
dB
dB
Characteristics
Vo max
THD
Vno
Maximum output voltage
Total harmonic distortion
Output noise voltage
1.8
—
—
—
10
-9.5
102
127.5
170
255
1.275
1.7
2.125
2.55
2.975
3.4
2.2
0.01
10
3.5
20
-8.0
120
150
200
300
1.5
2.0
2.5
3.0
3.5
4.0
—
0.03
18
10
30
-6.5
138
172.5
230
345
1.725
2.3
2.875
3.45
4.025
4.6
Vrms
%
µVrms
Zin
Gv(Cut)
f0
Input resistance
Control range(Cut)
Center frequency
KΩ
dB
Hz
Fixed EQ(Low)
Rev.1.1, Dec.17.2003, page 5 of 30
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