BA3430S Rohm Semiconductor, BA3430S Datasheet
BA3430S
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BA3430S Summary of contents
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... BA3430S / BA3430F / BA3430FS The BA3430S, BA3430F, and BA3430FS are stereo pre-amplifiers with mute detection circuits which have been de- signed for use in car stereos. The analog circuitry including the pre-amplifier and mute detection and the digital circuitry such as control logic circuits have been combined together on a single chip ...
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... Audio ICs FBlock diagram 270 BA3430S / BA3430F / BA3430FS ...
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... Audio ICs FPin descriptions BA3430S / BA3430F / BA3430FS 271 ...
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... Audio ICs FElectrical characteristics (unless otherwise noted 25_C and V 272 BA3430S / BA3430F / BA3430FS = *10dBV 1kHz 680 , ...
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... A 10k or less resistor must be connected to the input pin to limit the input current. Equivalent circuit schematic BA3430S / BA3430F / BA3430FS The electrolytic capacitor between the input pin and ground is for preventing switch noise. Although it is pos- sible to prevent switch noise in the audio output without ...
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... Input switch truth table 274 BA3430S / BA3430F / BA3430FS to the input pin to limit the input current. The capacitor be- tween the input pin and ground is for preventing switch noise. It can be omitted without causing incorrect song detection ...
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... The electrolytic capacitor be- tween the input pin and ground is for preventing incorrect detection. Without this capacitor, sensitivity switch noise may cause incorrect detection of songs. BA3430S / BA3430F / BA3430FS Input switch truth table 2) Input low pass filter High frequency noise increases during fast forward. This filter reduces high frequency noise ...
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... Output current of first comparator = approx. 1mA - 2.7(V) C: External capacitor connected to time constant pin CC R: External resistor connected to time constant pin (this should be 22k or higher the first Equivalent circuit schematic CC O-P BA3430S / BA3430F / BA3430FS 30k ) log the amplifier (Hz) ( from the ceasing of the signal to the change ...
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... The reference voltage of the comparator circuit 0.3V, therefore, the circuit will operate *13.5dBV or more. input of 0 rms BA3430S / BA3430F / BA3430FS b. From the above chart, the gain at 5kHz during play- back is 80dB. c. Therefore, the output / input level of mute detection is *13 *93.5dBV. 277 ...
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... Audio ICs FApplication example 278 BA3430S / BA3430F / BA3430FS ...
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... If the pop sound is muted at a latter stage, the capacitors can be omitted. Naturally, the mute detection circuit will still op- erate correctly if they are omitted. BA3430S / BA3430F / BA3430FS (4) Song detection output / input level The song detection output / input level can be set with the resistors connected to Pins 3 and 4 ...
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... Fig. 9 shows the allowed power dissipa- CC tion vs. ambient temperature (Pd supply voltage vs. ambient temperature (V can be obtained from these curves, and the result is shown in Fig. 10. Refer to Fig set the supply voltage when designing the application. FElectriclal charecteristics curves 280 vs. Ta). Allowed MAX. vs. Ta) CCMAX. BA3430S / BA3430F / BA3430FS ...
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... Audio ICs BA3430S / BA3430F / BA3430FS 281 ...
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... Audio ICs FExternal dimensions (Units: mm) 282 BA3430S / BA3430F / BA3430FS ...