BD37531FV-E2 ROHM [Rohm], BD37531FV-E2 Datasheet
BD37531FV-E2
Available stocks
Related parts for BD37531FV-E2
BD37531FV-E2 Summary of contents
Page 1
... Built-in input gain controller reduces switching noise for volume of a portable audio input. 5) Decrease the number of external components by built-in 3-band equalizer filter, LPF for subwoofer (except BD37531FV), loudness filter. And, possible to control Q, Gv 3-band equalizer and fc of LPF loudness by I freely possible for the bass, middle, treble to the gain adjustment quantity of ± ...
Page 2
... ・-20～+20dB（1dB step） ・Q=0.75, 1.25 ○ ○ ・fo=7.5k, 10k, 12.5k, 15kHz ・Possible to use “Advanced switch” at changing gain ・+15dB～-79dB(1dB step), -∞dB (BD37531FV : 0dB～-79dB, -∞dB) ○ ○ ・Possible to use “Advanced switch” for prevention of switching noise. ・0dB～20dB(1dB step) ・fo=250/400/800Hz ○ ...
Page 3
... BD37531FV,BD37532FV,BD37533FV,BD37534FV ●Absolute maximum ratings (Ta=25℃) Item Symbol Power supply Voltage VCC Input voltage Vin Power Dissipation Pd Storage Temperature Tastg ※This value decreases 8.5mW/℃ for Ta=25℃ or more. ROHM standard board shall be mounted. Thermal resistance θja = 117.6(℃/W) ROHM Standard board Size：70×70×1.6(㎣) Material： ...
Page 4
... BD37531FV,BD37532FV,BD37533FV,BD37534FV ●Electrical characteristics (Unless specified particularly, Ta=25℃, VCC=8.5V, f=1kHz, Vin=1Vrms, Rg=600Ω, R Mute off, Volume 0dB, Tone control 0dB, Loudness 0dB, LPF OFF(BD37532FV,BD37533FV,BD37534FV), Mixing OFF(BD37533FV,BD37534FV), Fader 0dB) Item Current upon no signal Voltage gain Channel balance Total harmonic distortion 1 (FRONT,REAR) Total harmonic distortion 2 ...
Page 5
... BD37531FV,BD37532FV,BD37533FV,BD37534FV Item Maximum boost gain Maximum cut gain Gain set error Maximum boost gain Maximum cut gain Gain set error Maximum boost gain Maximum cut gain Gain set error Input impedance Maximum input voltage Maximum attenuation Maximum gain Maximum boost gain (BD37532FV,BD37533FV,BD37534FV) Maximum attenuation＊ ...
Page 6
... BD37531FV,BD37532FV,BD37533FV,BD37534FV ●Electrical characteristic curves (Reference data VCC[V] Fig Vcc 2 5 BASS GAIN : -20～+20dB 2 0 /1dB step fo : 60Hz Frequency [Hz] Fig ...
Page 7
... BD37531FV,BD37532FV,BD37533FV,BD37534FV 1000 Din-Audio IHF-A 100 10 1 -80 -70 -60 -50 -40 -30 -20 - Volume Gain[dB] Fig.13 Volume Gain vs Noise 1000 DIN-Audio IHF-A 100 10 1 -20 -15 - Treble Gain [dB] Fig.16 Treble Gain vs Noise Fig.19 Advanced Switch 1 Fig.21 : Level Meter function is available only BD37534FV www.rohm.com © ...
Page 8
... Band P-EQ (Tone control) ★Volume/Mute ★Input Gain Input selector (3 single-end and 2 stereo ISO) GND GND ISO amp ISO amp 100k 100k 100k 250k 250k 250k Fig.22 BD37531FV Terminal Description No 8/37 Technical Note 19 ...
Page 9
... BD37531FV,BD37532FV,BD37533FV,BD37534FV VCC/2 GND BUS LOGIC ■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★ ...
Page 10
... BD37531FV,BD37532FV,BD37533FV,BD37534FV GND VCC BUS LOGIC ■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★ ...
Page 11
... BD37531FV,BD37532FV,BD37533FV,BD37534FV GND VCC BUS LOGIC ■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★ ...
Page 12
... BD37531FV,BD37532FV,BD37533FV,BD37534FV ●Timming Chart CONTROL SIGNAL SPECIFICATION (１) Electrical specifications and timing for bus lines and I/O stages SDA t BUF t LOW SCL t HD;STA S P Table 1 Characteristics of the SDA and SCL bus lines for I (Unless specified particularly, Ta=25℃, VCC=8.5V) 1 SCL clock frequency 2 Bus free time between a STOP and START condition Hold time (repeated) START condition ...
Page 13
... BD37531FV,BD37532FV,BD37533FV,BD37534FV Table 2 Characteristics of the SDA and SCL I/O stages for I 10 LOW level input voltage: 11 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 each I/O pin with an input voltage between 0.4V and 14 4 ...
Page 14
... BD37531FV,BD37532FV,BD37533FV,BD37534FV （２） BUS FORMAT MSB LSB S Slave Address 1bit 8bit S Slave Address A Select Address = Select every of volume, bass and treble. Data P 2 （３）I C BUS Interface Protocol 1）Basic form S Slave Address A MSB LSB MSB 2）Automatic increment (Select Address increases (+1) according to the number of data. ...
Page 15
... BD37531FV,BD37532FV,BD37533FV,BD37534FV （５）Select Address & Data BD37531FV Select MSB Address Items D7 (hex) Advanced Initial setup 1 01 switch ON/OFF Initial setup Initial setup Full-diff Input Selector 05 Type Mute Input gain 06 ON/OFF Volume gain 20 Fader 1ch Front 28 Fader 2ch Front ...
Page 16
... BD37531FV,BD37532FV,BD37533FV,BD37534FV BD37532FV Select MSB Address Items (hex) D7 Advanced switch Initial setup 1 01 ON/OFF LPF Initial setup 2 02 Phase Initial setup Full-diff Input Selector 05 Type Mute Input gain 06 ON/OFF Volume gain 20 Fader 1ch Front 28 Fader 2ch Front 29 Fader 1ch Rear 2A Fader 2ch Rear ...
Page 17
... BD37531FV,BD37532FV,BD37533FV,BD37534FV BD37533FV Select MSB Address Items D7 (hex) Advanced switch Initial setup 1 01 ON/OFF LPF Initial setup 2 02 Phase Initial setup Full-diff Input Selector 05 Type Mute Input gain 06 ON/OFF Volume gain 20 Fader 1ch Front 28 Fader 2ch Front 29 Fader 1ch Rear 2A Fader 2ch Rear ...
Page 18
... BD37531FV,BD37532FV,BD37533FV,BD37534FV BD37534FV Select MSB Address Items D7 (hex) Advanced switch Initial setup 1 01 ON/OFF LPF Initial setup 2 02 Phase Initial setup Full-diff Input Selector 05 Type Mute Input gain 06 ON/OFF Volume gain 20 Fader 1ch Front 28 Fader 2ch Front 29 Fader 1ch Rear 2A Fader 2ch Rear ...
Page 19
... BD37531FV,BD37532FV,BD37533FV,BD37534FV Select address 01 (hex) MSB Time D7 0.6msec Advanced 1.0msec Switch 1.4msec ON/OFF 3.2msec (Mixing is available only BD37533FV, BD37534FV) MSB Time D7 4.7 msec Advanced 7.1 msec Switch 11.2 msec ON/OFF 14.4 msec (Mixing is available only BD37533FV, BD37534FV) MSB Mode D7 OFF (Mixing is available only BD37533FV, BD37534FV) ...
Page 20
... BD37531FV,BD37532FV,BD37533FV,BD37534FV Select address 03(hex) MSB f0 D7 250Hz 400Hz 0 800Hz Prohibition Select address 05(hex) Mode OUTF1 OUTF2 single DP1 DP2 E1 single EP1 EN1 E2 single EN2 EP2 A diff diff diff DP1 DP2 E full diff EP1 EP2 ...
Page 21
... BD37531FV,BD37532FV,BD37533FV,BD37534FV Select address 06 (hex) MSB Gain D7 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB 11dB Mute ON/OFF 12dB 13dB 14dB 15dB 16dB 17dB 18dB 19dB 20dB Prohibition MSB Mode D7 OFF www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
Page 22
... Prohibition ： 0 15dB 0 14dB 0 13dB 0 ： ： -77dB 1 -78dB 1 -79dB 1 1 Prohibition ： 1 -∞dB 1 (About BD37531FV, only 0dB～-∞dB are available) Select address 30(hex) MSB Gain & ATT Prohibition ： 0 7dB 0 6dB 0 5dB 0 ： ： -77dB 1 -78dB 1 -79dB 1 1 Prohibition ： ...
Page 23
... BD37531FV,BD37532FV,BD37533FV,BD37534FV Select address 41(hex) MSB Q factor D7 0.5 1.0 0 1.5 2.0 MSB fo D7 60Hz 80Hz 0 100Hz 120Hz Select address 44(hex) MSB Q factor D7 0.75 1.0 0 1.25 1.5 MSB fo D7 500Hz 1kHz 0 1.5kHz 2.5kHz Select address 47 (hex) MSB Q factor D7 0.75 0 1.25 MSB fo D7 7.5kHz 10kHz 0 12.5kHz 15kHz www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
Page 24
... BD37531FV,BD37532FV,BD37533FV,BD37534FV Select address 51, 54, 57 (hex) MSB Gain D7 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB Bass/ 11dB Middle/ 12dB Treble Boost 13dB /cut 14dB 15dB 16dB 17dB 18dB 19dB 20dB Prohibition MSB Mode D7 Boost 0 Cut 1 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. ...
Page 25
... BD37531FV,BD37532FV,BD37533FV,BD37534FV Select address 75 (hex) MSB Mode D7 Hicut1 Hicut2 0 Hicut3 Hicut4 MSB Gain D7 0dB 1dB 2dB 3dB 4dB 5dB 6dB 7dB 8dB 9dB 10dB 11dB 0 12dB 13dB 14dB 15dB 16dB 17dB 18dB 19dB 20dB Prohibition （６）About power on reset supply voltage circuit made initialization inside IC is built-in. Please send data to all address as initial data at supply voltage on ...
Page 26
... About BD37531FV, Fader Volume only 0dB～-∞dB are available. Mixing is available only BD37533FV, BD37534FV. Adjustable range is +7dB～-∞dB. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. (dB -33 0 ...
Page 27
... BD37531FV,BD37532FV,BD37533FV,BD37534FV About Level meter(available only BD37534FV) （１） The operation of circuit Level meter is a function which gives DC voltage proportional to the size of signal of sound. It detects the peak level of signal and keeps the peak level, so that it is possible to monitor the size of signal by resetting DC voltage kept with suitable interval. （ ...
Page 28
... Isolation1, Full DifferentialはSingle4～6に切換可能 ※About GND Isolation1 and Full Differential possible （About GND Isolation1 and Full Differential possible to change from differential input to single input 4～6. to change from differential input to single input 4～6.） Fig.28 BD37531FV 28/37 Technical Note MUTE 10μ ...
Page 29
... BD37531FV,BD37532FV,BD37533FV,BD37534FV FIL GND SDA 10μ VCC/2 GND BUS LOGIC ■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★ ...
Page 30
... BD37531FV,BD37532FV,BD37533FV,BD37534FV FIL GND SDA 10μ VCC/2 GND BUS LOGIC ■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★ ...
Page 31
... BD37531FV,BD37532FV,BD37533FV,BD37534FV FIL GND SDA 10μ VCC/2 GND BUS LOGIC ■Fader Gain:+15dB～-79ｄB/1dB step ★no pop noise ■LPF fc=55/85/120/160Hz ■Loudness Gain:20dB～0ｄB/1ｄB step ★no pop noise ・ｆ0=250/400/800Hz ・Hicut1/2/3/4 ■3 Band P-EQ (Tone control) Gain：+20dB～-20dB/1dB step ★ ...
Page 32
... BD37531FV,BD37532FV,BD37533FV,BD37534FV ●Interfaces Terminal Terminal Terminal No. Name Voltage 4. DP1 DP2 10 EP1 4.25 11 EN1 12 EN2 13 EP2 15 MUTE － 18 OUTS2 19 OUTS1 20 OUTR2 4.25 21 OUTR1 22 OUTF2 23 OUTF1 17 LOUT 0～3.3 The figure in the pin explanation and input/output equivalent circuit is reference value, it doesn’t guarantee the value. ...
Page 33
... A terminal for signal input (BD37533FV, BD37534FV) The input impedance is 27kΩ(typ). TEST terminal (BD37531FV,BD37532FV,BD37533FV) About BD37531FV and BD37532FV, 14,16,17pin are TEST Pin. About BD37533FV, 16,17pin are TEST Pin. 2010.03 - Rev.A ...
Page 34
... Please insert a resistor (about 2.2kΩ) to Mute terminal in series, if voltage is supplied to mute terminal in case. (Please refer Application Circuit Diagram.) 4. About TEST Pin About TEST Pin, please use with OPEN. About BD37531FV and BD37532FV, 14,16,17pin are TEST Pin. About BD37533FV, 16,17pin are TEST Pin. www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved. G〔dB〕 ...
Page 35
... BD37531FV,BD37532FV,BD37533FV,BD37534FV 5. About Mixing (BD3753FV,BD37534FV) ・About specification of Fader -∞ at Mixing ON. Mixed signal is added to Main signal after Fader Gain(+15～-79dB) like the following figure. When Fader is made a set up in -∞, the signal after a Mixing signal is added is done with MUTE. Because the -∞ circuit of Fader is in the step after the addition circuit. ・ ...
Page 36
... BD37531FV,BD37532FV,BD37533FV,BD37534FV ●Thermal Derating Curve About the thermal design by the IC Characteristics have a great deal to do with the temperature at which it is used, and exceeding absolute maximum ratings may degrade and destroy elements. Careful consideration must be given to the heat of the IC from the two standpoints of immediate damage and long-term reliability of operation. ...
Page 37
... BD37531FV,BD37532FV,BD37533FV,BD37534FV ● Ordering part number Part No. Part No. 37531 37532 37533 37534 SSOP-B28 10 ± 0.2 (MAX 10.35 include BURR 0.1 0.65 0.22 ± 0.1 www.rohm.com © 2010 ROHM Co., Ltd. All rights reserved Package FV : SSOP-B28 <Tape and Reel information> Tape Embossed carrier tape ...
Page 38
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose ...