Datasheet Sound Processor with Built-in 2-band Equalizer BD37511FS Key Specifications Power Supply Voltage Range: Circuit Current (No Signal): Total Harmonic Distortion: Maximum Input Voltage: Cross-talk Between Selectors: Volume Control Range: Output Noise Voltage: Residual Output Noise Voltage: Operating Temperature Range: General Description BD37511FS is a sound processor with built-in 2-band equalizer for car audio. The functions are 3ch stereo input selector, input-gain control, main volume and 4ch fader volume. Moreover, its "Advanced switch circuit", which is an original ROHM technology, can reduce various switching noise (ex. No-signal, low frequency like 20Hz & large signal inputs). "Advanced switch" makes control of microcomputer easier, supporting the construction of a high quality car audio system. Package Features Reduce switching noise of mute, main volume, fader volume, bass, trebles by using advanced switch circuit Built-in 3 single-ended input selectors Decrease the number of external components due to built-in 2-band equalizer filter. It is possible to adjust the gain of the bass and treble up to 20dB with 1 dB step gain adjustment. Energy-saving design resulting in low current consumption, by utilizing the Bi-CMOS process. It has the advantage in quality over scaling down the power heat control of the internal regulators. Input terminals and output terminals are organized and separately laid out to keep the signal flow in one direction which results in simpler and smaller PCB layout. It is possible to control the I2C BUS by 3.3V / 5V. 7.0V to 9.5V 15mA(Typ) 0.005%(Typ) 2.3Vrms (Typ) -100dB(Typ) +0dB to -40dB 6Vrms(Typ) 2Vrms(Typ) -40C to +85C W(Typ) x D(Typ) x H(Max) SSOP-A20 8.70mm x 7.80mm x 2.01mm Applications It is optimal for use in car audio systems. It can also be used for audio equipment of mini Compo, micro Compo, TV, etc. Product structureSilicon monolithic integrated circuit www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211114001 This product has no designed protection against radioactive rays 1/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Typical Application Circuit BD37511FS Pin Configuration TOP VIEW A1 1 20 FIL A2 2 19 GND B1 3 18 SDA B2 4 17 SCL C1 5 16 MUTE C2 6 15 VCC TEST1 7 14 OUTF1 TEST2 8 13 OUTF2 TEST3 9 12 OUTR1 N.C 10 11 OUTR2 Pin Descriptions 1 Pin Name A1 11 Pin Name OUTR2 A input terminal of 1ch 2 A2 A input terminal of 2ch Rear output terminal of 2ch 12 OUTR1 Rear output terminal of 1ch 3 B1 4 B2 B input terminal of 1ch 13 OUTF2 Front output terminal of 2ch B input terminal of 2ch 14 OUTF1 Front output terminal of 1ch 5 6 C1 C input terminal of 1ch 15 VCC C2 C input terminal of 2ch 16 MUTE External compulsory mute terminal 7 TEST1 Test Pin 17 SCL I2C Communication clock terminal 8 TEST2 Test Pin 18 SDA I2C Communication data terminal 9 TEST3 Test Pin 19 GND GND terminal 10 N.C. No Connection 20 FIL Pin No. Description www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 Pin No. 2/26 Description Power supply terminal VCC/2 terminal TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Block Diagram 20 19 18 17 16 15 14 13 12 11 VCC VCC/2 GND I2C BUS LOGIC Fader Fader Fader Fader Fader:0dB-62B/1dB - Fader: 0dB to -62dB/1dB - no pop noise 2 Band EQ (Tone control) Gain: +20dB to -20dB/1dB Gain+20dB-20dB/1dB no pop noise Bassf0=100Hz Q=1.0 Treblef0=10kHz Q=1 2 Band P-EQ (Tone control) Volume: 0dB to -40dB/1dB step Volume0dB-40dB/1dB step no pop noise Volume/Mute Input Gain: +20dB to 0dB/1dB step Input Gain+20dB0dB/1dB step Input Gain Input selector (3 single-end) 100k 1 100k 2 www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 100k 3 100k 4 100k 5 100k 6 3/26 TEST1 TEST2 TEST3 7 8 9 10 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Absolute Maximum Ratings (Ta=25C) Parameter Symbol Rating Unit Power Supply Voltage VCC 10.0 V Input Voltage VIN VCC+0.3 to GND-0.3 V Power Dissipation Pd 0.94 (Note 1) W Tstg -55 to +150 C Storage Temperature (Note 1) This value derates by 7.5mW/C for Ta=25C or more when ROHM standard board is used. Thermal resistance ja = 133.3(C/W) ROHM Standard board Size : 70 x 70 x 1.6(mm3) Material : A FR4 grass epoxy board(3% or less of copper foil area) Caution: Operating the IC over the absolute maximum ratings may damage the IC. The damage can either be a short circuit between pins or an open circuit between pins and the internal circuitry. Therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the IC is operated over the absolute maximum ratings. Recommended Operating Conditions Symbol Min Typ Max Unit Power Supply Voltage VCC 7.0 - 9.5 V Temperature Topr -40 - +85 C Parameter GENERAL BLOCK Electrical Characteristics (Unless specified otherwise, Ta=25C, VCC=8.5V, f=1kHz, VIN =1Vrms, Rg=600, RL=10k, A input, Input gain 0dB, Mute OFF, Volume 0dB, Tone control 0dB, Loudness 0dB, Fader 0dB) Limit Parameter Symbol Unit Conditions Min Typ Max Circuit Current IQ 15 30 mA No signal Voltage Gain GV -1.5 0 +1.5 dB GV=20log(VOUT/VIN) Channel Balance CB -1.5 0 +1.5 dB Total Harmonic Distortion THD+N1 0.005 0.05 Output Noise Voltage * VNO1 6 25 Vrms CB = GV1-GV2 VOUT=1Vrms BW=400Hz-30KHz Rg = 0 BW = IHF-A Residual Output Noise Voltage * VNOR 2 10 Vrms Cross-talk Between Channels * CTC -100 -90 dB RR -70 -40 dB RIN_S 70 100 130 k Maximum Input Voltage VIM 2.1 2.3 Vrms Cross-talk Between Selectors * CTS -100 -90 dB Rg = 0 CTS=20log(VOUT/VIN) BW = IHF-A Minimum Input Gain GIN_MIN -2 0 +2 dB Input gain 0dB VIN=100mVrms GIN=20log(VOUT/VIN) Maximum Input Gain GIN_MAX 18 20 22 dB Input gain 20dB VIN=100mVrms GIN=20log(VOUT/VIN) Gain Set Error GIN_ERR -2 0 +2 dB GAIN=+1dB to +20dB INPUT GAIN INPUT SELECTOR Ripple Rejection Input Impedance(A, B, C) www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 4/26 Fader = -dB Rg = 0 BW = IHF-A Rg = 0 CTC=20log(VOUT/VIN) BW = IHF-A f=1KHz VRR=100mVrms RR=20log(VCC IN/VOUT) VIM at THD+N(VOUT)=1 BW=400Hz-30KHz TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS FADER TREBLE BASS VOLUME MUTE BLOCK Electrical Characteristics - continued Limit Parameter Symbol Min Typ Max Unit Conditions Mute Attenuation * GMUTE -105 -85 dB Mute ON GMUTE=20log(VOUT/VIN) BW = IHF-A Maximum Attenuation GV_MIN -43 -40 -37 dB Volume = -40dB GV=20log(VOUT/VIN) Attenuation Set Error 1 GV_ERR1 -2 0 +2 dB GAIN & ATT=0dB to -15dB Attenuation Set Error 2 GV_ERR2 -3 0 +3 dB ATT=-16dB to -40dB Maximum Boost Gain GB_BST 18 20 22 dB Maximum Cut Gain GB_CUT -22 -20 -18 dB Gain Set Error GB_ERR -2 0 +2 dB Maximum Boost Gain GT_BST 18 20 22 dB Maximum Cut Gain GT_CUT -22 -20 -18 dB Gain Set Error GT_ERR -2 0 +2 dB Maximum Attenuation * GF_MIN -100 -90 dB Attenuation Set Error 1 GF_ERR1 -2 0 +2 dB ATT=0dB to -15dB Attenuation Set Error 2 GF_ERR2 -3 0 +3 dB ATT=-16dB to -47dB Attenuation Set Error 3 GF_ERR3 -4 0 +4 dB ATT=-48dB to -62dB Output Impedance ROUT - 50 VIN =100mVrms Maximum Output Voltage VOM 2 2.2 Vrms Gain=+20dB f=100Hz VIN=100mVrms GB=20log (VOUT/VIN) Gain=-20dB f=100Hz VIN=2Vrms GB=20log (VOUT/VIN) Gain=-20dB to +20dB f=100Hz Gain=+20dB f=10kHz VIN=100mVrms GT=20log (VOUT/VIN) Gain=-20dB f=10kHz VIN=2Vrms GT=20log (VOUT/VIN) Gain=-20dB to +20dB f=10kHz Fader = -dB GF=20log(VOUT/VIN) BW = IHF-A THD+N=1 BW=400Hz-30KHz VP-9690A (Average value detection, effective value display) filter by Matsushita Communication is used for * measurement. Phase between input / output is same. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 5/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Typical Performance Curves 30 Total Harmonic Distortion : THD+N [%] 10 Quiescent Current : IQ [mA] 25 20 15 10 5 0 0 2 4 6 8 10 10kHz 1 1kHz 100Hz 0.1 0.01 0.001 0.001 Supply Voltage : VCC [V] 5 25 4 20 Bass Voltage Gain : GV [dB] 3 Voltage Gain : GV [dB] 0.1 1 10 Figure 2. Total Harmonic Distortion vs Output Voltage Figure 1. Quiescent Current vs Supply Voltage 2 Gain=0dB 1 0.01 Output Voltage : VOUT [Vrms] 0 -1 -2 -3 -4 BASS GAIN : -20dB to +20dB /1dB step fo : 100Hz Q:1 15 10 5 0 -5 -10 -15 -20 -5 10 100 1k 10k -25 100k 10 Frequency : f [Hz] 1k 10k 100k Frequency : f [Hz] Figure 3. Voltage Gain vs Frequency www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 100 Figure 4. Bass Voltage Gain vs Frequency 6/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Common Mode Rejection Ratio: CMRR [dB] Typical Performance Curves - continued 25 TREBLE GAIN : -20dB to +20dB /1dB step fo : 10kHz Q:1 Treble Voltage Gain : GV [dB] 20 15 10 5 0 -5 -10 -15 -20 -25 10 100 1k 10k 100k 0 -20 -40 -60 -80 -100 10 1k 10k 100k Frequency : f [Hz] Frequency : f [Hz Figure 6. Common Mode Rejection Ratio vs Frequency Figure 5. Treble Voltage Gain vs Frequency 0 0 -20 Ripple Rejection : RR [dB] Cross-talk Between Channels : CTC [dB] 100 -40 -60 -80 -100 -20 -40 -60 -80 -100 -120 10 100 1k 10k 10 100k Frequency : f [Hz] 1k 10k 100k Frequency :f [Hz] Figure 7. Cross-Talk Between Channels vs Frequency www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 100 Figure 8. Ripple Rejection Ratio vs Frequency 7/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Typical Performance Curves - continued 100 Output Noise : VNO [Vrms] Output Noise : VNO [Vrms] 100 DIN-AUDIO IHF-A 10 DIN-AUDIO IHF-A 10 1 1 -40 -30 -20 -10 0 -20 10 -15 -10 -5 0 5 15 10 20 Bass Voltage Gain : GV [dB] Volume Attenuation : ATT [dB] Figure 9. Output Noise vs Volume Attenuation Figure 10. Output Noise vs Bass Voltage Gain 100 DIN-AUDIO Output Noise : VNO [Vrms] Output Noise : VNO [Vrms] 100 IHF-A 10 DIN-AUDIO IHF-A 10 1 -80 Treble Voltage Gain : GV [dB] -70 -60 -50 -40 -30 -20 -10 0 Fader Voltage Gain : GV [dB] Figure 11. Output Noise vs Treble Gain Figure 12. Output Noise vs Fader Gain 1 -20 -15 -10 www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 -5 0 5 10 8/26 15 20 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Typical Performance Curves - continued Maximum Output Voltage: VOUT [Vrms] 2.5 2.0 1.5 1.0 0.5 0.0 100 1000 10000 100000 Load Resistance : RL [] Figure 13. Maximum Output Voltage vs Load Resistance OUTF1 OUTF1 OUTF2 OUTF2 Figure 14. Advanced Switch 1 www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 Figure 15. Advanced Switch 2 9/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Timing Chart Control Signal Specification (1) Electrical Specifications and Timing for Bus Lines and I/O Stages SDA tBUF tLOW tHD;STAT tF tR tSP SCL tHD;STA P tHD;DAT tHIGH tSU;DAT tSU;STAT tSU;STOT Sr S P Figure 16. I2C-bus Signal Timing Diagram Table 1 Characteristics of the SDA and SCL bus lines for I2C-bus devices Parameter 1 2 3 4 5 6 7 8 9 Fast-mode I2C-bus Min Max 400 0 1.3 Symbol SCL clock frequency Bus free time between a STOP and START condition Hold time (repeated) START condition. After this period, the first clock pulse is generated LOW period of the SCL clock HIGH period of the SCL clock Set-up time for a repeated START condition Data hold time: Data set-up time Set-up time for STOP condition fSCL tBUF Unit kHz S tHD;STA 0.6 S tLOW tHIGH 1.3 0.6 0.6 0.7 (Note) 700 0.6 S S S S ns S tSU;STA tHD;DAT tSU;DAT tSU;STO All values referred to VIH Min and VIL Max Levels (see Table 2). (Note) To avoid sending right after the fall-edge of SCL (VIHmin of the SCL signal), the transmitting device should set a hold time of 300ns or more for the SDA signal. For 7(tHD;DAT), 8(tSU;DAT), make the setup in which the margin is fully in. Table 2 Characteristics of the SDA and SCL I/O stages for I2C-bus devices Parameter 10 11 12 13 14 Symbol LOW level input voltage: HIGH level input voltage: Pulse width of spikes which must be suppressed by the input filter. LOW level output voltage: at 3mA sink current Input current of each I/O pin with an input voltage between 0.4V and 4.5V. tHD;STA HD;STA :2s 2us tHD;DAT HD;DAT :1s 1us VIL VIH tSP VOL1 II Fast-mode devices Min Max -0.3 +1 2.3 5 0 50 0 0.4 -10 tSU;DAT SU;DAT :1s 1us +10 Unit V V ns V A tSU;STO SU;STO :2s 2us SCL SCL tBUF BUF :4s 4us tLOW LOW :3s 3us tHIGH HIGH :1s 1us SDA SDA SCL clock clock frequency : 250kHz SCL frequency250kHz Figure 17. I2C Data Transmission Command Timing Diagram www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 10/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS (2) I2C BUS FORMAT S 1bit MSB LSB Slave Address 8bit S Slave Address A Select Address Data P MSB LSB MSB LSB A Select Address A Data A P 1bit 8bit 1bit 8bit 1bit 1bit = Start condition (Recognition of start bit) = Recognition of slave address. The first 7 bits correspond to the slave address. The least significant bit is "L" which corresponds to write mode. = ACKNOWLEDGE bit (Recognition of acknowledgement) = Select address corresponding to volume, bass or treble. = Data on every volume and tone. = Stop condition (Recognition of stop bit) (3) I2C BUS Interface Protocol (a) Basic Format S Slave Address A Select Address A Data A MSB LSB MSB LSB MSB LSB P (b) Automatic Increment (Select Address increases (+1) according to the number of data.) S Slave Address A Select Address A Data1 A Data2 A MSB LSB MSB LSB MSB LSB MSB LSB (Example) Data1 shall be set as data of address specified by Select Address. Data2 shall be set as data of address specified by Select Address +1. DataN shall be set as data of address specified by Select Address +N-1. DataN MSB (c) Configuration Unavailable for Transmission (In this case, only Select Address1 is set.) S Slave Address A Select Address1 A Data A Select Address 2 A Data A MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB (Note) If any data is transmitted as Select Address 2 next to data, it is recognized as data, not as Select Address 2. A P LSB P (4) Slave Address MSB A6 1 A5 0 www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 A4 0 A3 0 A2 0 11/26 A1 0 A0 0 LSB R/W 0 80H TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS (5) Select Address & Data Select Address (hex) Items Initial setup 1 01 Input Selector 04 Input gain 06 Volume gain Fader 1ch Front Fader 2ch Front Fader 1ch Rear Fader 2ch Rear 20 28 29 2A 2B Bass gain 51 Treble gain 57 System Reset FE MSB D7 Advance d switch ON/OFF 0 Mute ON/OFF 1 1 1 1 1 Bass Boost/ Cut Treble Boost/ Cut 1 Data D6 0 0 0 D5 D4 Advanced switch time of Volume/Tone/Fader 0 0 LSB D3 D2 0 0 0 0 D1 D0 Advanced switch time of Mute Input selector Input Gain 0 0 0 0 0 Volume Attenuation Fader Attenuation Fader Attenuation Fader Attenuation Fader Attenuation 0 0 Bass Gain 0 0 Treble Gain 0 0 0 0 0 0 1 Advanced switch Note 1. The Advanced Switch works in the latch part while changing from one function to another. 2. When changing a tone into the cut from the boost, or the cut and the boost, always go via the condition of the tone 0dB. 3. Upon continuous data transfer, the Select Address rolls over because of the automatic increment function, as shown below. 0104062028292A2B5157 4. For the function of Input Selector etc, Advanced Switch is not used. Therefore, please apply mute on the set side when changing these settings. 5. When using mute function of this IC at the time of changing input selector, please switch mute ON/OFF while waiting for advanced-mute time. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 12/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Select address 01 (hex) Mode MSB D7 0.6msec 1.2msec 2.4msec 4.8msec Advanced Switch ON/OFF Mode 4.6 msec 9.3 msec 18.6 msec 37.2 msec Mode OFF ON D6 0 D5 Advanced switch time of Volume/Tone/Fader MSB D7 D6 Advanced Switch ON/OFF 0 MSB D7 0 1 D6 0 Advanced switch time of Mute D4 D3 D2 D5 0 0 1 1 0 Advanced switch time of Volume/Tone/Fader D4 D3 0 1 0 0 1 Advanced switch ON/OFF D5 D4 D3 Advanced switch time 0 of Volume/Tone/Fader 0 D1 0 0 1 1 LSB D0 0 1 0 1 LSB D2 0 D2 0 D1 D0 Advanced switch Time of Mute LSB D1 D0 Advanced switch Time of Mute Select address 04(hex) Mode A B C SHORT MSB D7 D6 D5 0 0 0 Input Selector D4 D3 0 INPUT MUTE 0 D2 0 0 0 1 1 1 D1 0 0 1 0 1 1 LSB D0 0 1 0 1 0 1 :Initial condition SHORT : The input impedance of each input terminal is lowered from 100k(TYP) to 6 k(TYP). (For quick charge of coupling capacitor) INPUT MUTE : Mute is done at the input signal in the part of Input Selector. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 13/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Select address 06 (hex) Gain 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB 11dB 12dB 13dB 14dB 15dB 16dB 17dB 18dB 19dB 20dB MSB D7 Mute ON/OFF D6 D5 0 0 Input Gain D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 1 D4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 Prohibition 1 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 0 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 1 LSB D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1 1 D2 D1 LSB D0 (Note) In case sending prohibited data, 0dB is set. Mode OFF ON MSB D7 0 1 D6 D5 0 0 Mute ON/OFF D4 D3 Input Gain :Initial condition www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 14/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Select address 20 (hex) Gain & ATT 0dB -1dB -2dB -38dB -39dB -40dB MSB D7 D6 1 0 Vol Attenuation D4 D3 0 0 0 0 0 0 0 0 0 0 0 1 0 1 D5 0 0 0 1 1 1 1 1 1 Prohibition 1 1 1 1 D2 0 0 0 1 1 0 0 D1 0 0 1 1 1 0 0 LSB D0 0 1 0 0 1 0 1 1 1 1 1 0 1 D2 0 0 0 1 1 1 D1 0 0 1 0 1 1 LSB D0 0 1 0 1 0 1 (Note) In case sending prohibited data, -40dB is set. Select address 28, 29, 2A, 2B (hex) MSB Gain & ATT D7 0dB -1dB -2dB 1 -61dB -62dB -dB D6 0 Fader Attenuation D4 D3 0 0 0 0 0 0 1 1 1 1 1 1 D5 0 0 0 1 1 1 : Initial condition www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 15/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Select address 51, 57 (hex) Gain 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB 11dB 12dB 13dB 14dB 15dB 16dB 17dB 18dB 19dB 20dB MSB D7 Bass/ Treble Boost /cut D6 D5 0 0 Bass/Treble Gain D4 D3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 0 1 0 1 0 1 0 1 0 1 0 1 1 Prohibition 1 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 LSB D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1 1 1 0 1 D2 D1 LSB D0 (Note) In case sending prohibited data, 0dB is set. Mode Boost Cut MSB D7 0 1 D6 D5 0 0 Bass/Treble Boost/Cut D4 D3 Bass/Treble Gain :Initial condition (6) About Power ON Reset Built-in IC initialization is made during power on of the supply voltage. Please send initial data to all addresses at supply voltage on. And please turn ON mute at the set side until this initial data is sent. Limit Parameter Symbol Unit Conditions Min Typ Max Rise Time of VCC VCC Voltage of Release Power ON Reset tRISE 20 sec VPOR 4.1 V VCC rise time from 0V to 3V (7) About External Compulsory Mute Terminal It is possible to force mute externally by setting an input voltage to the MUTE terminal. Mute Voltage Condition Mode GND to 1.0V MUTE ON 2.3V to VCC MUTE OFF Establish the voltage of MUTE in the condition to be defined. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 16/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Application Information 1. Function and Specifications Function Input selector Input gain Mute Volume Specifications Stereo 3 input 0dB to 20dB Possible to use "Advanced switch" for prevention of switching noise. 0dB to -40dB (1dB step) Possible to use "Advanced switch" for prevention of switching noise. -20dB to +20dB (1dB step) Bass Q=1 fo=100Hz Possible to use advanced switch at changing gain -20dB to +20dB (1dB step) Treble Q=1 fo=10kHz Possible to use advanced switch at changing gain Fader 0dB to -62dB(1dB step), -dB Possible to use "Advanced switch" for prevention of switching noise. 2. Volume / Fader Volume Attenuation Data (dB) D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 0 0 0 0 -1 0 0 0 0 0 1 -2 0 0 0 0 1 0 -3 0 0 0 0 1 1 -4 0 0 0 1 0 0 -5 0 0 0 1 0 1 -6 0 0 0 1 1 0 -7 0 0 0 1 1 1 -8 0 0 1 0 0 0 -9 0 0 1 0 0 1 -10 0 0 1 0 1 0 -11 0 0 1 0 1 1 -12 0 0 1 1 0 0 -13 0 0 1 1 0 1 -14 0 0 1 1 1 0 -15 0 0 1 1 1 1 1 0 -16 0 1 0 0 0 0 -17 0 1 0 0 0 1 -18 0 1 0 0 1 0 -19 0 1 0 0 1 1 -20 0 1 0 1 0 0 -21 0 1 0 1 0 1 -22 0 1 0 1 1 0 -23 0 1 0 1 1 1 -24 0 1 1 0 0 0 -25 0 1 1 0 0 1 -26 0 1 1 0 1 0 -27 0 1 1 0 1 1 -28 0 1 1 1 0 0 -29 0 1 1 1 0 1 -30 0 1 1 1 1 0 -31 0 1 1 1 1 1 For Volume attenuation, only 0dB to -40dB are available. (dB) -32 -33 -34 -35 -36 -37 -38 -39 -40 -41 -42 -43 -44 -45 -46 -47 -48 -49 -50 -51 -52 -53 -54 -55 -56 -57 -58 -59 -60 -61 -62 - D7 D6 1 0 D5 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 D3 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 D2 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 D1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 D0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 Initial condition www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 17/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS 3. Application Circuit GND FIL SDA SCL MUTE VCC 10 OUTF1 OUTF2 OUTR1 OUTR2 0.1 10 10 20 19 18 17 16 15 14 10 13 10 12 10 11 VCC VCC/2 GND I2C BUS LOGIC Fader Fader Fader Fader Fader:0dB-62B/1dB Fader: 0dB to -62dB/1dB -- no pop noise 2 Band EQ (Tone control) Gain+20dB-20dB/1dB Gain: +20dB to -20dB/1dB no pop noise Bassf0=100Hz Q=1.0 Treblef0=10kHz Q=1 2 Band P-EQ (Tone control) Volume: 0dB to -40dB/1dB step Volume0dB-40dB/1dB step no pop noise Volume/Mute Input Gain: +20dB to 0dB/1dB step Input Gain+20dB0dB/1dB step Input Gain Input selector (3 single-end) 100k 1 100k 2 2.2 Single1 100k 3 2.2 100k 4 2.2 Single2 100k 5 2.2 100k 6 2.2 Single3 2.2 TEST1 TEST2 TEST3 7 8 9 10 Unit R : [] C : [F] Notes on wiring Please connect the decoupling capacitor of the power supply in the shortest possible distance to GND. GND lines should be one-point connected. Wiring pattern of Digital should be away from that of Analog unit and cross-talk should not be acceptable. SCL and SDA lines of I2C BUS should not be parallel if possible. The lines should be shielded, if they are adjacent to each other. Analog input lines should not be parallel if possible. The lines should be shielded, if they are adjacent to each other. For TEST pins (Pin 7,8,9), please leave them as OPEN. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 18/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Power Dissipation About the thermal design of the IC Characteristics of an IC have a great deal to do with the temperature at which it is used, and exceeding absolute maximum ratings may degrade and destroy the device. Careful consideration must be given to the heat of the IC from the two standpoints of immediate damage and long-term reliability of operation. Reference data SSOP-A20 Power Dissipation : Pd (W) 1.5 Measurement condition: ROHM Standard board board Size : 70 x 70 x 1.6(mm3) material : A FR4 grass epoxy board (3% or less of copper foil area) 0.94W 1.0 ja = 133.3C/W 0.5 0.0 0 25 50 75 85 100 125 150 Ambient Temperature : Ta (C) Figure 18. Temperature Derating Curve (Note) Values are actual measurements and are not guaranteed. Power dissipation values vary according to the board on which the IC is mounted. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 19/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS I/O Equivalent Circuits Terminal No. Terminal Name Terminal Voltage Equivalent Circuit Terminal Description A terminal for signal input. The input impedance is 100k(typ). VCC 1 A1 2 A2 3 B1 4 B2 5 C1 6 C2 4.25 100K GND VCC 16 MUTE A terminal for external compulsory mute. If terminal voltage is High level, the mute is off. And if the terminal voltage is Low level, the mute is on. 1.65V GND VCC A terminal for fader and Subwoofer output. 11 OUTR2 12 OUTR1 13 OUTF2 14 OUTF1 4.25 GND Power supply terminal. 15 VCC 8.5 A terminal for clock input of I2C BUS communication. VCC 17 SCL 1.65V GND Values in the pin explanation and input/output equivalent circuit are reference values only and are not guaranteed. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 20/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS I/O Equivalent Circuits - continued Terminal No. Terminal Name Terminal Voltage Equivalent Circuit Terminal Description A terminal for data input of I2C BUS communication. VCC 18 SDA 1.65V GND Ground terminal. 19 GND 0 Voltage for reference bias of analog signal system. The simple precharge circuit and simple discharge circuit for an external capacitor are built in. VCC 50k 20 FIL 4.25 50k GND 7 TEST1 8 TEST2 9 TEST3 TEST terminal. - Values in the pin explanation and input/output equivalent circuit are reference values only and are not guaranteed. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 21/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Operational Notes 1. Reverse Connection of Power Supply Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when connecting the power supply, such as mounting an external diode between the power supply and the IC's power supply pins. 2. Power Supply Lines Design the PCB layout pattern to provide low impedance supply lines. Separate the ground and supply lines of the digital and analog blocks to prevent noise in the ground and supply lines of the digital block from affecting the analog block. Furthermore, connect a capacitor to ground at all power supply pins. Consider the effect of temperature and aging on the capacitance value when using electrolytic capacitors. 3. Ground Voltage Ensure that no pins are at a voltage below that of the ground pin at any time, even during transient condition. 4. Ground Wiring Pattern When using both small-signal and large-current ground traces, the two ground traces should be routed separately but connected to a single ground at the reference point of the application board to avoid fluctuations in the small-signal ground caused by large currents. Also ensure that the ground traces of external components do not cause variations on the ground voltage. The ground lines must be as short and thick as possible to reduce line impedance. 5. Thermal Consideration Should by any chance the power dissipation rating be exceeded the rise in temperature of the chip may result in deterioration of the properties of the chip. In case of exceeding this absolute maximum rating, increase the board size and copper area to prevent exceeding the Pd rating. 6. Recommended Operating Conditions These conditions represent a range within which the expected characteristics of the IC can be approximately obtained. The electrical characteristics are guaranteed under the conditions of each parameter. 7. Inrush Current When power is first supplied to the IC, it is possible that the internal logic may be unstable and inrush current may flow instantaneously due to the internal powering sequence and delays, especially if the IC has more than one power supply. Therefore, give special consideration to power coupling capacitance, power wiring, width of ground wiring, and routing of connections. 8. Operation Under Strong Electromagnetic Field Operating the IC in the presence of a strong electromagnetic field may cause the IC to malfunction. 9. Testing on Application Boards When testing the IC on an application board, connecting a capacitor directly to a low-impedance output pin may subject the IC to stress. Always discharge capacitors completely after each process or step. The IC's power supply should always be turned off completely before connecting or removing it from the test setup during the inspection process. To prevent damage from static discharge, ground the IC during assembly and use similar precautions during transport and storage. 10. Inter-pin Short and Mounting Errors Ensure that the direction and position are correct when mounting the IC on the PCB. Incorrect mounting may result in damaging the IC. Avoid nearby pins being shorted to each other especially to ground, power supply and output pin. Inter-pin shorts could be due to many reasons such as metal particles, water droplets (in very humid environment) and unintentional solder bridge deposited in between pins during assembly to name a few. 11. Unused Input Pins Input pins of an IC are often connected to the gate of a MOS transistor. The gate has extremely high impedance and extremely low capacitance. If left unconnected, the electric field from the outside can easily charge it. The small charge acquired in this way is enough to produce a significant effect on the conduction through the transistor and cause unexpected operation of the IC. So unless otherwise specified, unused input pins should be connected to the power supply or ground line. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 22/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Operational Notes - continued 12. Regarding the Input Pin of the IC This monolithic IC contains P+ isolation and P substrate layers between adjacent elements in order to keep them isolated. P-N junctions are formed at the intersection of the P layers with the N layers of other elements, creating a parasitic diode or transistor. For example (refer to figure below): When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode. When GND > Pin B, the P-N junction operates as a parasitic transistor. Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual interference among circuits, operational faults, or physical damage. Therefore, conditions that cause these diodes to operate, such as applying a voltage lower than the GND voltage to an input pin (and thus to the P substrate) should be avoided. Resistor Transistor (NPN) Pin A Pin B C E Pin A N P+ P N N P+ N Pin B B Parasitic Elements N P+ N P N P+ B N C E Parasitic Elements P Substrate P Substrate GND GND Parasitic Elements GND Parasitic Elements GND N Region close-by Figure 19. Example of monolithic IC structure 13. About a Signal Input Part (a) About Input Coupling Capacitor Constant Value In the input signal terminal, please decide the constant value of the input coupling capacitor C(F) that would be sufficient to form an RC characterized HPF with input impedance R IN() inside the IC. GdB CF 0 RIN A(f) SSH fHz INPUT A f 2 fCRIN 2 2 1 2 fCRIN (b) About the Input Selector SHORT SHORT mode is the command which makes switch SSH =ON of input selector part so that the input impedance RIN of all terminals becomes small. Switch SSH is OFF when SHORT command is not selected. The constant time brought about by the small resistance inside and the capacitor outside the LSI becomes small when this command is used. The charge time of the capacitor becomes short. Since SHORT mode turns ON the switch of SSH and makes it low impedance, please use it at no signal condition. 14. About Mute Terminal(Pin 16) when power supply is OFF There should be no applied voltage across the Mute terminal (Pin 16) when power-supply is OFF. A resistor (about 2.2k) should be connected in series to Mute terminal in case a voltage is supplied to Mute terminal. (Please refer Application Circuit Diagram.) 15. About TEST Pin TEST Pin, should be OPEN. Pin 9, 8, 7 are TEST Pins. www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 23/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Ordering Information B D 3 7 5 1 1 Part Number F S - Package FS: SSOP-A20 E2 Packaging and forming specification E2: Embossed tape and reel Marking Diagram SSOP-A20(TOP VIEW) Part Number Marking BD37511FS LOT Number 1PIN MARK www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 24/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Physical Dimension, Tape and Reel Information Package Name SSOP-A20 (Max 9.05 (include.BURR)) (UNIT : mm) PKG : SSOP-A20 Drawing No. : EX132-5001 www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 25/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 BD37511FS Revision History Date Revision 16.Dec.2015 001 Changes New Release www.rohm.com (c) 2015 ROHM Co., Ltd. All rights reserved. TSZ2211115001 26/26 TSZ02201-0C2C0E100410-1-2 16.Dec.2015 Rev.001 Datasheet Notice Precaution on using ROHM Products 1. Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment, OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you (Note 1) , transport intend to use our Products in devices requiring extremely high reliability (such as medical equipment equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property ("Specific Applications"), please consult with the ROHM sales representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ROHM's Products for Specific Applications. (Note1) Medical Equipment Classification of the Specific Applications JAPAN USA EU CHINA CLASS CLASSb CLASS CLASS CLASS CLASS 2. ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure or malfunction of our Products may cause. The following are examples of safety measures: [a] Installation of protection circuits or other protective devices to improve system safety [b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. Our Products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of any ROHM's Products under any special or extraordinary environments or conditions. If you intend to use our Products under any special or extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents [b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust [c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves [e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items [f] Sealing or coating our Products with resin or other coating materials [g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] Use of the Products in places subject to dew condensation 4. The Products are not subject to radiation-proof design. 5. Please verify and confirm characteristics of the final or mounted products in using the Products. 6. In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied, confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect product performance and reliability. 7. De-rate Power Dissipation depending on ambient temperature. When used in sealed area, confirm that it is the use in the range that does not exceed the maximum junction temperature. 8. Confirm that operation temperature is within the specified range described in the product specification. 9. ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in this document. Precaution for Mounting / Circuit board design 1. When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product performance and reliability. 2. In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products, please consult with the ROHM representative in advance. For details, please refer to ROHM Mounting specification Notice-PGA-E (c) 2015 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet Precautions Regarding Application Examples and External Circuits 1. If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the characteristics of the Products and external components, including transient characteristics, as well as static characteristics. 2. You agree that application notes, reference designs, and associated data and information contained in this document are presented only as guidance for Products use. Therefore, in case you use such information, you are solely responsible for it and you must exercise your own independent verification and judgment in the use of such information contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. Precaution for Electrostatic This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron, isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control). Precaution for Storage / Transportation 1. Product performance and soldered connections may deteriorate if the Products are stored in the places where: [a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2 [b] the temperature or humidity exceeds those recommended by ROHM [c] the Products are exposed to direct sunshine or condensation [d] the Products are exposed to high Electrostatic 2. Even under ROHM recommended storage condition, solderability of products out of recommended storage time period may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is exceeding the recommended storage time period. 3. Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of which storage time is exceeding the recommended storage time period. Precaution for Product Label QR code printed on ROHM Products label is for ROHM's internal use only. Precaution for Disposition When disposing Products please dispose them properly using an authorized industry waste company. Precaution for Foreign Exchange and Foreign Trade act Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign trade act, please consult with ROHM in case of export. Precaution Regarding Intellectual Property Rights 1. All information and data including but not limited to application example contained in this document is for reference only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. 2. ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the Products with other articles such as components, circuits, systems or external equipment (including software). 3. No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the Products, subject to the terms and conditions herein. Other Precaution 1. This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM. 2. The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of ROHM. 3. In no event shall you use in any way whatsoever the Products and the related technical information contained in the Products or this document for any military purposes, including but not limited to, the development of mass-destruction weapons. 4. The proper names of companies or products described in this document are trademarks or registered trademarks of ROHM, its affiliated companies or third parties. Notice-PGA-E (c) 2015 ROHM Co., Ltd. All rights reserved. Rev.002 Datasheet General Precaution 1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents. ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny ROHM's Products against warning, caution or note contained in this document. 2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior notice. Before purchasing or using ROHM's Products, please confirm the la test information with a ROHM sale s representative. 3. The information contained in this doc ument is provi ded on an "as is" basis and ROHM does not warrant that all information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information. Notice - WE (c) 2015 ROHM Co., Ltd. All rights reserved. Rev.001 Datasheet BD37511FS - Web Page Buy Distribution Inventory Part Number Package Unit Quantity Minimum Package Quantity Packing Type Constitution Materials List RoHS BD37511FS SSOP-A20 2000 2000 Taping inquiry Yes