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M62437FP
Sound Controller With SRS Focus & SRS Surround
REJ03F0216-0201 Rev.2.01 Mar 31, 2008
Description
This is an IC for car audio. F(*)cus system can realize more optimal speaker position.
Features
* Built-in F(*)cus [LF/HF elevation (position) and Bass Compensation can be changed by the external resistors.] * Built-in SR * SRS ON/OFF mode and FOCUS ON/OFF mode can be controlled by the DC voltage.
Recommended Operating Condition
Supply voltage range: VCC = 7 to 9 V Rated supply voltage: VCC = 8 V
System Block Diagram
Bass LF Ele. HF Ele. Comp. SRS ON/OFF Rear L Tone Rear R Lin Front L Interface FOCUS ON/OFF
Tone
Rin Front R M62419FP
M62437FP
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 1 of 11
M62437FP
Block Diagram & Application Example
3 k C17 390 pF C13 0.0039 F Vol.4 10 k R39 2.4 k
VCC
IN
NP
Vol.2 1 k
Vol.5 1 k C9 C6 0.1 F 0.01 F
OUT
2.2 F
NC 36 35 Vref 34 33 32 31 30
NC 26 25
42
41
40
39
38
37
29
28
27
SRS OUT FOCUS IN I/F
+ -
REF
FOCUS IN SRS OUT
1 Cref
2
3
4
5
6
7
NP
8
9
10
Vol.1
11
12
13
14
15
16
17
18
+
+
10 F 2.2 F C1 0.018 F
2.2 F C10 1 k 0.22 F C2 0.01 F C3 0.82 F
C12 0.0039 F
Vol.3 10 k
C16 390 pF R41 2.4 k
+
2.2 F
IN
OUT
3 k
VCC
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 2 of 11
FOCUS position H/L
NC
VCC
BASS Comp. position H/L
C7 470 pF
+
24 23 22 19 20 21
C6 2.2 F C9 2.2 F 470 pF 0.22 F
FOCUS ON/OFF SRS ON/OFF
+
M62437FP
Absolute Maximum Ratings
(Ta = 25C, unless otherwise noted)
Item Supply Voltage Power Dissipation Thermal Derating Operating Temperature Storage Temperature Symbol VCC, Vdd Pd K Topr Tstg Ratings 12 990 9.9 -20 to +75 -55 to +125 Unit V mW mW/C C C Condition Ta 25C Ta > 25C
Thermal Derating
1200
Power Dissipation Pd (mW)
1000
990
800 600
495
400 200 0 0 25 50 75 100 125 150
Ambient Temperature Ta (C)
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 3 of 11
M62437FP
Electrical Characteristics
(1) Power supply characteristics (Ta = 25C, VCC = 8.0V, f = 1kHz)
Item Circuit current ICC Symbol Min -- Limits Typ 25 Max 45 Unit mA Conditions 42pin ICC No Signal
(2) Input/Output characteristics (Ta = 25C, VCC = 8.0V, f = 1kHz, VOL.1, 2 = 1k (VOL), VOL.3, 4 = 10k (VOL), VOL.5 = 1k (VOL))
Item Maximum output voltage Symbol VOMt Min 1.6 Limits Typ 1.9 Max -- Unit Vrms Conditions Input; pin2, 41 Output; pin18, 24 RL = 10k, THD = 1% f = 150Hz Input; pin2, 41 Output; pin18, 24 SRSON, FOCUSOFF THD = 1% Input; pin2, 41/Output; pin18, 24 f = 1kHz SRSON f = 20kHz FOCUSON (All VOL. = max) THD = 1% Vi = 100mVrms SRS, FocusOFF Input; pin2, 41/Output; pin18, 24 Vi = 100mVrms f = 150Hz Input; pin2, 41/Output ; pin18, 24 SRSON, FOCUSOFF Vi = 100mVrms f = 1kHz SRSON f = 20kHz FOCUSON (All VOL. = max) (2pin, 41pin)-(18, 24Pin) Rg = 0 (2, 41pin) SRSOFF, FOCUSOFF DIN-AUDIO filter Rg = 0 (2, 41pin) SRSON, FOCUSOFF DIN-AUDIO filter Rg = 0 (2, 41pin), SRSON, FOCUSON (All VOL. = max) DIN-AUDIO filter Input side: f = 1kHz, Vi = 0.5Vrms Monitor side: Rg = 0, IHF-A filter Focus: OFF, SRS: OFF RL = 10k
Maximum input voltage
VIM1
0.4
0.6
--
Vrms
VIM2 VIM3
0.2 0.06
0.3 0.11
-- --
Pass gain
Gvt
-2.0
0
2.0
dB
Gv1
7
10
13
Gv2 Gv3
15 25
18 28
21 31
Output noise voltage
Vno1
--
5.5
15
Vrms
Vno2
--
18
50
Vno3
--
90
150
Channel separation
CT
--
-90
-75
dB
(3) DC Control Characteristic of the Switch Block
Item "H" level input voltage "L" level input voltage Symbol VIH VIL Min 2.1 0 Limits Typ ~ ~ Max VCC 0.8 Unit V V Conditions Pin 22, 23 Pin 22, 23
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 4 of 11
M62437FP
Switch Condition and the Mode
(23) SRS 3D Stereo SRS ON SRS OFF (22) FOCUS FOCUS ON FOCUS OFF SRS ON/OFF Switch H L FOCUS ON/OFF Switch H L
Note: Bypass mode can be set by both SRS ON/OFF switch and FOCUS ON/OFF switch are set to "L".
Application Circuit Example
R24 7 k 3 k C17 390 pF R39 2.4 k R25 R26 200 400
R27 400
VCC
IN
NP
C9 0.22 F
C13 0.0039 F
R23 3 k
OUT
2.2 F
42
41
40
39
38
37
36
35 Vref
34
33
32
31
30
29
28
27 BA
26 BB
25 BC
SRS OUT FOCUS IN I/F
+ -
REF
FOCUS IN SRS OUT
1 Cref
2
3
4
5
6
7
NP
8
9
10
11
12
13
14
15
16
17
18
+
+
R16 R17 390 200 R18 390 C3 0.82 F C12 R20 0.0039 F 3 k R21 7 k
10 F 2.2 F C1 0.018 F
C7 2.2 F C10 470 pF 0.22 F C2 0.01 F
C16 390 pF R41 2.4 k
+
2.2 F
IN
OUT
3 k
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 5 of 11
+
24 23 22 19 20 21
FOCUS position H/L BASS Comp. position H/L
C6 2.2 F R13 R14 R15 2.2 F 470 pF 390 200 390
FOCUS ON/OFF SRS ON/OFF
C9 C6 0.1 F 0.01 F
+
M62437FP
Regarding to the other Application Circuit
* R16 (R13), R17 (R14), R18 (R15) The resisters of R16 (R13), R17 (R14), R18 (R15) can be set the FOCUS position (LF Elevation). Note: This figure shows only the side channel.
C10
8
0.22 F
R16
9
FOCUS position "H"
R17
10
FOCUS position "L"
R18
35
1. The setting of the FOCUS position "H"
R17 + R18 R16 + R17 + R18
2. The setting of the FOCUS position "L"
R18 R16 + R17 + R18
Note:
please keep the following formula. R16 + R17 + R18 1 k (Example) In the case of R16 = 390 , R17 = 200 , R18 = 390 FOCUS position "H" 60% FOCUS position "L" 40% (Switch Setting)
FOCUS ON/OFF Switch (22 Pin) FOCUS Position H/L Switch (20 Pin) H L
FOCUS Position "H" (LF Elevation) FOCUS Position "L" (LF Elevation)
H H
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 6 of 11
M62437FP * R20 (R23) , R21 (R24) The resisters of R20 (R23), R21 (R24) can be set the HF Elevation. Note: This figure shows only the side channel.
C12
13 14
0.0039 F
R20
15
HF elevation
R21
35
1. The setting of the HF Elevation.
R21 R20 + R21
Note: please keep the following formula. R20 + R21 10 k (Example) In the case of R20 = 3 k, R21 = 7 k HF Elevation 70% * R25, R26, R27 The resistors of R25, R26, R27 can be set the Bass Compensation.
27
R25
26
Bass compensation "H"
R26
25
Bass compensation "L"
R27
35
1. The setting of the Bass Compensation "H"
R26 + R27 R25 + R26 + R27
2. The setting of the Bass Compensation "L"
R27 R25 + R26 + R27
Note: please keep the following formula. R25 + R26 + R27 1 k (Example) In the case of R25 = 200 , R26 = 390 , R27 = 390 Bass Compensation "H" 80% Bass Compensation "L" 40%
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 7 of 11
M62437FP (Switch Setting)
FOCUS ON/OFF Switch (22 Pin) H H Bass Comp. H/L Switch (21 Pin) H L
Bass Compensation "H" Bass Compensation "L"
Between Pin16 (31) and Pin17 (30)
Add 10 k of resistors between Pin16(31) and Pin17(30), can adjust the difference between the sound level of Focus ON and the sound level of Focus OFF. Also add 10 k of resistors between Pin16(31) and Pin17(30), can decrease the Focus gain. Then the maximum input voltage and the output noise voltage can be improved.
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 8 of 11
M62437FP (Reference) In the case of (VOL.1, 2 = 1k, VOL.3, 4 = 10k, VOL.5 = 1k, Add 10k of resistors between Pin16(31) and Pin17(30))
Item Maximum output voltage Symbol VOMt Typ. 1.9 Unit Vrms Conditions Input; pin2, 41 Output; pin18, 24 RL = 10k, THD = 1% Input; pin2, 41/Output; pin18, 24 SRSON, FOCUSOFF THD = 1% Input; pin2, 41/Output; pin18, 24 SRSON FOCUSON (All VOL. = max) THD = 1% Vi = 100mVrms SRS, FocusOFF Input; pin2, 41/Output ; pin18, 24 Vi=100mVrms Input; pin2, 41/Output ; pin18, 24 SRSON, FOCUSOFF Vi = 100mVrms SRSON FOCUSON (All VOL. = max) (2pin, 41pin)-(18, 24Pin) Rg = 0 (2, 41pin) SRSOFF, FOCUSOFF DIN-AUDIO filter Rg = 0 (2, 41pin) SRSON, FOCUSOFF DIN-AUDIO filter Rg = 0 (2, 41pin) SRSON, FOCUSON (All VOL. = max) DIN-AUDIO filter Input Side: f = 1kHz, Vi = 0.5Vrms Monitor Side: Rg = 0, IHF-A filter Focus: OFF, SRS: OFF RL=10k
Maximum input voltage
VIM1
0.6
Vrms
f = 150Hz
VIM2 VIM3
0.55 0.2
f = 1kHz f = 20kHz
Pass gain
Gvt
0
dB
Gv1
10
f = 150Hz
Gv2 Gv3
12 22
f = 1kHz f = 20kHz
Output noise voltage
Vno1
5.5
Vrms
Vno2
18
Vno3
50
Channel separation
CT
-90
dB
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 9 of 11
M62437FP
System Circuit Example
(The following figures show only the side channel.) 1. In the case of SRS 3D stereo is effective for the front speakers.
M62419FP/M62440FP M62437FP Front fader TONE Master volume SRS FOCUS Front
Rear fader Rear
2. In the case of SRS 3D stereo is effective for the front and rear speakers. (FOCUS is effective for the front speakers.)
M62437FP M62419FP/M62440FP Front fader TONE Master volume SRS FOCUS Front
Rear fader Rear
Note
Each switches (SRS ON/OFF, FOCUS ON/OFF and FOCUS Position H/L Switches) does not have the countermeasure for click noise, so that we recommended outside mute circuit. SRS, the SRS logo, Sound Retrieval System and "everything else is only stereo" are registered trademarks of SRS Labs, Inc. This device available only to licensees of SRS Lab, Inc. Licensing and application information may be obtained from SRS Lab, Inc. Renesas Technology Corp. assumes no responsibility for any damage, or infringement of any third-party's rights, originating in the use of any product data, diagrams, charts or circuit application examples contained in these materials.
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 10 of 11
M62437FP
Package Dimensions
42P2R-A
EIAJ Package Code SSOP42-P-450-0.80
42
MMP
JEDEC Code -- Weight(g) 0.63
22
Plastic 42pin 450mil SSOP
Lead Material Alloy 42/Cu Alloy e b2
HE
E
e1
F
Recommended Mount Pad Dimension in Millimeters Min Nom Max 2.4 -- -- -- -- 0.05 -- 2.0 -- 0.5 0.4 0.35 0.2 0.15 0.13 17.7 17.5 17.3 8.6 8.4 8.2 -- 0.8 -- 12.23 11.93 11.63 0.7 0.5 0.3 -- 1.765 -- 0.75 -- -- -- 0.9 -- 0.15 -- -- 0 -- 10 -- -- 0.5 -- 11.43 -- -- 1.27 --
Symbol
1 21
A
G
D
A2 e y
b
A1
A A1 A2 b c D E e HE L L1 z Z1 y b2 e1 I2
L1
c z Z1 Detail G Detail F
REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 11 of 11
L
I2
Sales Strategic Planning Div.
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