ba3430f ROHM Co. Ltd., ba3430f Datasheet
ba3430f
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ba3430f 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 = 9V 1kHz 680 , V = *10dBV ...
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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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... 276 BA3430S / BA3430F / BA3430FS resistor inside the IC which is 100 during play- back and 360 during fast forward. The gain of the amplifier The low cutoff frequency ...
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... The reference voltage of the comparator circuit 0.3V, therefore, the circuit will operate input of 0 *13.5dBV or more. 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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... Audio ICs FThermal derating curves As the allowed power dissipation of the BA3430F / BA3430FS is small (BA3430F = 550mW, BA3430FS = 800mW), high temperature or high current may cause the allowed power dissipation to be exceeded. Fig. 8 shows the internal power dissipation vs. supply voltage (Pd vs and Fig. 9 shows the allowed power dissipa- CC tion vs ...
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... Audio ICs BA3430S / BA3430F / BA3430FS 281 ...
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... Audio ICs FExternal dimensions (Units: mm) 282 BA3430S / BA3430F / BA3430FS ...