BD3884FS_11

1/4 Structure Product name Model Name Silicone monolithic integrated circuit Audio sound processor for TV BD3884FS ●Features 1. Built-in AGC circuit adjusting the sound difference among input sources 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 1000 *1 -40～+85 *2 -55～+150 Unit V V mW °C °C *1 At Ta＝25°C or higher, this value is decreaced to 8.0mW/°C. When Rohm standard board is mounted. Thermal resistance ja = 125 (°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. REV. C 2/4 ●Function Function AGC Front volume Surround Bass Treble Rear volume 4 step level variable 0dB to –87dB (1dB step), -∞dB Stereo Surround 14dB (2dB step) 14dB (2dB step) 0dB ～-20dB (2dB step), -25dB, -30dB, （With the independent control） -45dB, -60dB, MUTE Specifications ●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. 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 ％ Vrms 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 － Vrms dB 70 REV. C 3/4 ●Dimensional outline drawing BD3884FS LOT No. SSOP-A24 (Unit : mm) ●Block diagram 24 BNF1 23 BOUT1 22 BNF2 21 BOUT2 20 OUT1 19 OUT2 18 LINE1 17 LINE2 16 GND 15 SDA 14 SCL 13 CAP2 BASS CH1 Bass -14～14dB 2dB step BASS CH2 IIC BUS Logic 0dB 0dB SURROUND (Fixed Effect Amount) Treble -14～14dB 2dB step Rear Vol 0～-20dB 2dB step -25, -30, -45, -60, -∞dB With soft switch AGC (4 Level variable) TREBLE CH1 TREBLE CH2 Front Vol 0～-87dB 1dB step VCC/2 VCC 50k 89k 50k 11k IN1 89k 11k IN2 TNF1 TNF2 VIN2 SEL2 VIN1 SEL1 LS CAP1 FIL VCC 1 2 3 4 5 6 7 8 9 10 11 12 REV. C 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. C Notice Notes 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 of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. 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