BD3886FS

1/4 Structure Product name Model Type Silicone monolithic integrated circuit Audio sound processor for TV BD3886FS ●Features 1. Built-in BBE processor clarifying voice sound 2. I2C BUS control with the control voltage of 3.3V-5.0V 3. Use the Bi-CMOS process ●Absolute Maximum Ratings (Ta=25°C) Parameter Applied Voltage Input Voltage Power Dissipation Operating Temperature Storage Temperature Symbol VCC VIN Pd Topr Tastg Limits 10.0 VCC+0.3～GND-0.3 1190*1 -40～+85 *2 -55～+150 Unit V V mW °C °C *1 At Ta＝25°C or higher, this value is decreaced to 9.5mW/°C. When Rohm standard board is mounted. Thermal resistance ja = 105 (°C/W). Rohm standard board: size: 70×70×1.6 (mm3) material: FR4 glass-epoxy substrate (copper foil area: not more than 3%). *2 As long as voltage stays within operating voltage range, certain circuit operation is guaranteed in the operating temperature range. Allowable loss conditions are related to temperature, to which care must be taken. In addition though the standard value of its electrical characteristics cannot be guaranteed under the conditions other than those specified, original functions are maintained. ●Operating Voltage Range Parameter Power supply voltage *3 Symbol VCC Min. 7.0 Typ. 9.0 Max. 9.5 Unit V Basic operation shall be available at Ta=25°C. *3 As long as temperature components must be set in accordance with the operating voltage and temperature ranges before using this IC. In addition, though the standard value of its electrical characteristics cannot be guaranteed under the conditions other than those specified, original functions are maintained. ■ License Agreements for Patent and Trade Mark BBE is the trade mark of BBE Sound Inc. The supply and sales of BD3886FS is limited to the parties to which the use of Patents and Trade Marks is permitted. For the inquiry for the use right of trade mark and patent, contract BBE Inc. directly at the following address. BBE Sound Area Manager (Japan), Mr. Tetsuro Sato 1-29-5-502 Higashi Ayase, Adachiku, Tokyo Telephone: 03-5697-4280, Fax: 03-5697-4281 REV. B 2/4 ●Function Function AGC Front volume Surround Bass Treble BBE Rear volume Specifications 4 step suppression level variable 0dB to –87dB (1dB step), -∞dB Stereo Surround 14dB (2dB step) 14dB (2dB step) Process control : 1 ～ 10 dB Contour control : 1 ～ 10 dB 0dB ～-20dB (2dB step), -25dB, -30dB, （With the independent control） -45dB, -60dB, -∞dB ●Electrical characteristics Unless specified: Ta=25C, VCC=9V, f=1kHz, VIN=1Vrms, Rg=600Ω, RL=10kΩ, Front Volume 0dB, Rear Volume =0dB, Bass=0dB, Treble=0dB, AGC=OFF, SURROUND=OFF;BBE=OFF. Limits Parameter Symbol Min. Current upon no signal Maximum input voltage Maximum output voltage Voltage gain Channel balance Total harmonic distortion Output noise voltage IQ VIM1 VOM1 GV1 CB THD1 VNO1 － 2.6 2.2 -2 -1.5 － － Typ. 8 2.8 2.5 0 0 0.008 6 Max. 20 － － 2 1.5 0.1 18 mA Vrms Vrms dB dB ％ μVrms Vin=0Vrms Front Volume = -6dB THD(Vout)=1％ BPF=400-30KHz THD=1％ BPF=400-30KHz GV=20log(Vout/Vin) CB = GV1-GV2 Vout=500mVrms BPF=400-30KHz BPF = IHF-A, Rg=0Ω Front Volume = -87dB Rear Volume = -∞dB BPF = IHF-A, Rg=0Ω CT = 20log(Vin/Vout) BPF = IHF-A Unit Conditions Residual noise voltage Cross talk 1ch→2ch VMNO1 CT12 － 1.5 80 10 － μVrms 70 dB REV. B 3/4 ●Dimensional outline drawing BD3886FS LOT No. SSOP-A32 (Unit : mm) ●Block diagram 32 HF2 31 LF2 30 BNF1 29 BOUT1 28 BNF2 27 BOUT2 26 OUT1 25 OUT2 24 LINE1 23 LINE2 22 GND 21 SDA 20 SCL 19 CAP2 18 C1 8k 67k 17 C2 8k 67k BBE CH2 BASS CH1 BASS CH2 IIC BUS Logic TREBLE CH1 TREBLE CH2 Bass -14 ～14dB 2dB step 0 dB 0 dB Treble -14 ～14dB 2dB step SURROUND (Fixed Effect Amount) Rear Vol 0～-20dB 2dB step -25, -30, -45, -60, - ∞dB With soft switch AGC VCC 4 suppression level variable BBE Contour: 1, 2, 3, 4, 5, 6, FrontVol 8, 10dB Process: 1, 2, 3, 4, 5, 6, 0～-87dB ,-∞dB 1dB step 8, 10dB LF1 TNF1 TNF2 VIN2 SEL2 VIN1 VCC/2 50k 89k 50k BBE CH1 89k 11k A2 67k 8k B1 67k 8k B2 HF1 SEL1 LS CAP1 FIL VCC 11k A1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 REV. B 4/4 ●Cautions on use (1) Numbers and data in entries are representative design values and are not guaranteed values of the items. (2) Although we are confident in recommending the sample application circuits, carefully check their characteristics further when using them. When modifying externally attached component constants before use, determine them so that they have sufficient margins by taking into account variations in externally attached components and the Rohm LSI, not only for static characteristics but also including transient characteristics. (3) Absolute maximum ratings If applied voltage, operating temperature range, or other absolute maximum ratings are exceeded, the LSI may be damaged. Do not apply voltages or temperatures that exceed the absolute maximum ratings. If you think of a case in which absolute maximum ratings are exceeded, enforce fuses or other physical safety measures and investigate how not to apply the conditions under which absolute maximum ratings are exceeded to the LSI. (4) GND potential Make the GND pin voltage such that it is the lowest voltage even when operating below it. Actually confirm that the voltage of each pin does not become a lower voltage than the GND pin, including transient phenomena. (5) Thermal design Perform thermal design in which there are adequate margins by taking into account the allowable power dissipation in actual states of use. (6) Shorts between pins and misinstallation When mounting the LSI on a board, pay adequate attention to orientation and placement discrepancies of the LSI. If it is misinstalled and the power is turned on, the LSI may be damaged. It also may be damaged if it is shorted by a foreign substance coming between pins of the LSI or between a pin and a power supply or a pin and a GND. (7) Operation in strong magnetic fields Adequately evaluate use in a strong magnetic field, since there is a possibility of malfunction. REV. B Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. 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