BD3870FS_10 ROHM [Rohm], BD3870FS_10 Datasheet
BD3870FS_10
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BD3870FS_10 Summary of contents
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Sound Processors for BOOM BOX / Mini-component Stereo Sound Processors with Built-in 2-band Equalizers BD3870FS,BD3871FS,BD3872FS,BD3873FS ●Description The Sound Processor with built-in 2 Band Equalizer, incorporates functions required for BOOM BOX and mini-component systems, such as input selector, input gain amp, ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS ●Electrical characteristics (Ta=25 ℃ , VCC=8V, f=1kHz, Vi=200mVrms, RL=10kΩ, Rg=600Ω, Input Gain=0dB (BD3870FS, BD3872FS only), Input Gain=24dB (BD3871FS only), Input Gain=18dB (BD3873FS only),Volume=0dB, Bass=0dB, Treble=0dB, Surround=OFF, Loud Speaker Equalizer=OFF (BD3872FS only), unless otherwise noted) Parameter Circuit Current Total Output ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS ●Timing chart 1) Signal Timing Conditions ・Data is read on the rising edge of the clock. ・Latch is read out on the falling edge of the clock. ・Latch signal must end with the LOW state. ・To avoid malfunctions, clock ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS 3) Control Data Format List Basic Configuration of Control Data Format Data input direction MSB D9 D8 Control Data Format (BD3870FS, BD3871FS, BD3873FS) Data input direction D9 D8 (1) Input Selector (2) (3) Bass Gain (4) * ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS ●Block diagram, application circuit, pin assignment (BD3870FS, BD3871FS, BD3873FS) 0.0022μ 0.0022μ 0.33μ Treble1 fc=8k Hz 0dB ～ -87dB -∞ Vcc/2 Vcc ●Pin description (BD3870FS, BD3871FS, BD3873FS) Pin No. Pin Name Description 1 VIN1 1ch volume ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS ●Block diagram, application circuit, pin assignment (BD3872FS) 0.001μ 0.001μ 0.022μ 62K Vcc/2 Vcc Loud Loud speaker speaker equalizer2 0dB 0dB ～ ～ -87dB -87dB -∞ -∞ Vcc/2 Vcc 0.22μ 0.22μ www.rohm.com ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS 0.33μ 0.01μ 0.33μ 0.01μ Loud speaker Loud speaker equalizer1 Treble1 equalizer2 fc=10kHz 0dB 0dB ～ ～ -87dB -87dB -∞ -∞ Vcc/2 Vcc 0.22μ 0.22μ www.rohm.com © 2010 ROHM Co., Ltd. All ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS ●Pin description (BD3872FS) Pin No. Pin Name Description 1 VIN1 1ch volume input pin 2 SEL1 1ch input selector output pin 3 VIN2 2ch volume input pin 4 SEL2 2ch input selector output pin 5 A1 1ch input pin ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS ●Description of operations 1) Bass filter Using external components, center frequencies and Q factors of the bass characteristics are flexible Fig.5 Standard values of R3, R4 (reference) (R1=5.6kΩ, R2=390kΩ, C1=C2=0.1µF) ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS 2) Treble filter Fig.7 Standard values of R1, R2 (reference) Treble Boost Cut Amount 0dB 2dB 4dB 6dB 8dB 10dB 12dB 14dB (BD3872FS only) * The actual boost cut amount may deviate from the standard values ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS 1) Sound generation using Loud Speaker Equalizer (BD3872FS) Using external components, one of the following two functions can be established; one having an effect to localize the vocal forward and enhance it (Loud Speaker Equalizer) and the other having ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS ●Reference data VCC (V) Fig.13 Circuit Current - Power Supply Voltage 20 At 18dB setting 100 1000 10000 100000 FREQUENCY (Hz) ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS ●Notes for use 1) Numbers and data in entries are representative design values and are not guaranteed values of the items. 2) Although ROHM is confident that the example application circuit reflects the best possible recommendations, be sure to ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS 12) Switching noise For Surround and Loud Speaker Equalizer (BD3872FS only), external capacitor C is attached to the CAP pin as a measures to control the switching noise. In the application circuit, a constant value as an example, is ...
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BD3870FS,BD3871FS,BD3872FS,BD3873FS ● Ordering part number Part No. Part No. 3870,3871,3873 3872 SSOP-A24 10 ± 0.2 (MAX 10.35 include BURR 0.1 0.38±0.1 0.8 SSOP-A32 13.6 ± 0.2 (MAX 13.95 include BURR ...
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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 ...