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 FOCUS ON/OFF Rear L Tone Interface Rear R Tone Lin Front L Rin Front R M62419FP M62437FP REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 1 of 11 M62437FP Block Diagram & Application Example 3 kΩ Vol.2 1 kΩ IN NP + 42 C6 2.2 µF C9 2.2 µF 470 pF 0.22 µF 41 40 39 38 R39 2.4 kΩ 10 kΩ NC 37 36 35 34 33 32 31 30 1 kΩ C9 C6 0.1 µF 0.01 µF 29 28 27 26 FOCUS ON/OFF SRS ON/OFF OUT Vol.5 Vol.4 C13 0.0039 µF 2.2 µF NC + VCC C17 390 pF 25 24 23 22 Vref SRS OUT FOCUS IN I/F + REF − FOCUS IN SRS OUT + 3 4 + 10 µF 2.2 µF C1 0.018 µF 5 6 7 C7 470 pF 8 NP 9 10 Vol.1 11 12 2.2 µF C10 1 kΩ 0.22 µF IN REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 2 of 11 C2 0.01 µF 13 14 15 16 17 18 NC C12 0.0039 µF Vol.3 10 kΩ C3 0.82 µF + C16 390 pF R41 2.4 kΩ 19 2.2 µF OUT 3 kΩ 20 21 VCC BASS Comp. position H/L Cref 2 FOCUS position H/L 1 VCC M62437FP Absolute Maximum Ratings (Ta = 25°C, unless otherwise noted) Item Supply Voltage Power Dissipation Thermal Derating Operating Temperature Storage Temperature Symbol VCC, Vdd Pd Kθ Topr Tstg Ratings 12 990 9.9 −20 to +75 −55 to +125 Unit V mW mW/°C °C °C Condition Ta ≤ 25°C Ta > 25°C Thermal Derating Power Dissipation Pd (mW) 1200 1000 990 800 600 495 400 200 0 0 25 50 75 100 125 Ambient Temperature Ta (°C) REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 3 of 11 150 M62437FP Electrical Characteristics (1) Power supply characteristics (Ta = 25°C, VCC = 8.0V, f = 1kHz) Item Symbol Circuit current ICC Min Limits Typ Max Unit — 25 45 mA Conditions 42pin ICC No Signal (2) Input/Output characteristics (Ta = 25°C, VCC = 8.0V, f = 1kHz, VOL.1, 2 = 1kΩ (VOL), VOL.3, 4 = 10kΩ (VOL), VOL.5 = 1kΩ (VOL)) Symbol Min Limits Typ Max Unit Maximum output voltage VOMt 1.6 1.9 — Vrms Input; pin2, 41 Output; pin18, 24 RL = 10kΩ, THD = 1% Maximum input voltage VIM1 0.4 0.6 — Vrms VIM2 VIM3 0.2 0.06 0.3 0.11 — — Gvt −2.0 0 2.0 Gv1 7 10 13 Gv2 Gv3 15 25 18 28 21 31 Vno1 — 5.5 15 Vno2 — 18 50 Vno3 — 90 150 CT — −90 −75 f = 150Hz Input; pin2, 41 Output; pin18, 24 SRS→ON, FOCUS→OFF THD = 1% Input; pin2, 41/Output; pin18, 24 f = 1kHz SRS→ON f = 20kHz FOCUS→ON (All VOL. = max) THD = 1% Vi = 100mVrms SRS, Focus→OFF Input; pin2, 41/Output; pin18, 24 Vi = 100mVrms f = 150Hz Input; pin2, 41/Output ; pin18, 24 SRS→ON, FOCUS→OFF Vi = 100mVrms f = 1kHz SRS→ON f = 20kHz FOCUS→ON (All VOL. = max) (2pin, 41pin)−(18, 24Pin) Rg = 0 (2, 41pin) SRS→OFF, FOCUS→OFF DIN-AUDIO filter Rg = 0 (2, 41pin) SRS→ON, FOCUS→OFF DIN-AUDIO filter Rg = 0 (2, 41pin), SRS→ON, FOCUS→ON (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 = 10kΩ Item Pass gain Output noise voltage Channel separation dB µVrms dB Conditions (3) DC Control Characteristic of the Switch Block Item “H” level input voltage “L” level input voltage Symbol VIH VIL REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 4 of 11 Min Limits Typ Max Unit 2.1 0 ~ ~ VCC 0.8 V V Conditions Pin 22, 23 Pin 22, 23 M62437FP Switch Condition and the Mode (23) SRS 3D Stereo SRS ON/OFF Switch H L (22) FOCUS FOCUS ON/OFF Switch H L SRS ON SRS OFF FOCUS ON FOCUS OFF Note: Bypass mode can be set by both SRS ON/OFF switch and FOCUS ON/OFF switch are set to “L”. Application Circuit Example 3 kΩ VCC IN NP + 42 C9 0.22 µF C13 0.0039 µF C17 390 pF R23 3 kΩ R39 2.4 kΩ C6 2.2 µF R13 R14 R15 2.2 µF 470 pF 390 Ω 200 Ω 390 Ω 41 40 39 38 37 36 35 34 33 32 31 30 R27 400 Ω R25 R26 200 Ω 400 Ω 2.2 µF C9 C6 0.1 µF 0.01 µF 29 28 Vref FOCUS ON/OFF SRS ON/OFF OUT + R24 7 kΩ 27 26 25 BA BB BC 24 23 22 SRS OUT FOCUS IN I/F + REF − FOCUS IN SRS OUT 1 Cref + 2 3 4 + 10 µF 2.2 µF C1 0.018 µF 5 6 7 8 NP 9 C7 2.2 µF C10 470 pF 0.22 µF IN 10 11 12 13 14 R16 R17 390 Ω 200 Ω C2 0.01 µF R18 390 Ω C3 0.82 µF C12 R20 0.0039 µF 3 kΩ R21 7 kΩ 15 16 17 18 20 21 + C16 390 pF R41 2.4 kΩ 19 2.2 µF OUT FOCUS position H/L 3 kΩ BASS Comp. position H/L REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 5 of 11 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 µF R16 9 FOCUS position "H" 10 FOCUS position "L" R17 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 kΩ (Example) In the case of R16 = 390 Ω, R17 = 200 Ω, R18 = 390 Ω FOCUS position “H” ≈ 60% FOCUS position “L” ≈ 40% (Switch Setting) FOCUS Position “H” (LF Elevation) FOCUS Position “L” (LF Elevation) REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 6 of 11 FOCUS ON/OFF Switch (22 Pin) FOCUS Position H/L Switch (20 Pin) H H H L 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 µF R20 HF elevation 15 R21 35 1. The setting of the HF Elevation. R21 R20 + R21 Note: please keep the following formula. R20 + R21 ≈ 10 kΩ (Example) In the case of R20 = 3 kΩ, R21 = 7 kΩ HF Elevation ≈ 70% • R25, R26, R27 The resistors of R25, R26, R27 can be set the Bass Compensation. 27 R25 26 Bass compensation "H" 25 Bass compensation "L" R26 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 kΩ (Example) In the case of R25 = 200 Ω, R26 = 390 Ω, R27 = 390 Ω Bass Compensation “H” ≈ 80% Bass Compensation “L” ≈ 40% REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 7 of 11 M62437FP (Switch Setting) Bass Compensation “H” FOCUS ON/OFF Switch (22 Pin) H Bass Comp. H/L Switch (21 Pin) H Bass Compensation “L” H 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 = 1kΩ, VOL.3, 4 = 10kΩ, VOL.5 = 1kΩ, Add 10kΩ of resistors between Pin16(31) and Pin17(30)) Item Maximum output voltage Symbol VOMt Maximum input voltage Pass gain Output noise voltage Channel separation Typ. 1.9 Unit Vrms VIM1 0.6 Vrms VIM2 0.55 VIM3 0.2 Gvt 0 Gv1 10 Gv2 12 Gv3 22 Vno1 5.5 Vno2 18 Vno3 50 CT −90 REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 9 of 11 dB µVrms dB Conditions Input; pin2, 41 Output; pin18, 24 RL = 10kΩ, THD = 1% Input; pin2, 41/Output; pin18, 24 SRS→ON, FOCUS→OFF THD = 1% Input; pin2, 41/Output; pin18, 24 SRS→ON FOCUS→ON (All VOL. = max) THD = 1% Vi = 100mVrms SRS, Focus→OFF Input; pin2, 41/Output ; pin18, 24 Vi=100mVrms Input; pin2, 41/Output ; pin18, 24 SRS→ON, FOCUS→OFF Vi = 100mVrms SRS→ON FOCUS→ON (All VOL. = max) (2pin, 41pin)-(18, 24Pin) Rg = 0 (2, 41pin) SRS→OFF, FOCUS→OFF DIN-AUDIO filter Rg = 0 (2, 41pin) SRS→ON, FOCUS→OFF DIN-AUDIO filter Rg = 0 (2, 41pin) SRS→ON, FOCUS→ON (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=10kΩ f = 150Hz f = 1kHz f = 20kHz f = 150Hz f = 1kHz f = 20kHz 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 SRS Master volume 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 MMP EIAJ Package Code SSOP42-P-450-0.80 Plastic 42pin 450mil SSOP JEDEC Code — Weight(g) 0.63 e b2 22 E HE e1 I2 42 Lead Material Alloy 42/Cu Alloy Recommended Mount Pad F Symbol 1 21 A D G A2 e b L L1 y A1 A A1 A2 b c D E e HE L L1 z Z1 y c z Z1 Detail G REJ03F0216-0201 Rev.2.01 Mar 31, 2008 Page 11 of 11 Detail F b2 e1 I2 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 — Sales Strategic Planning Div. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Notes: 1. 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