BA3838F Rohm, BA3838F Datasheet
BA3838F
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BA3838F Summary of contents
Page 1
... Vocal fader IC BA3837 / BA3837F / BA3838F The BA3837, BA3837F and BA3838F are ICs with an internal secondary active LPF for vocal cancellation functions and mixing amplifier functions with high degrees of vocal cancellation. Three control pins are used to switch between modes: the key controller input mode, through mode, vocal fader mode, sound multiplexing mode and mute mode. ...
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... Multimedia ICs • Block diagram C 16 LOGIC ROUT – + – – SW2 SW1 + – – – + – MIC LOUT FK TK LIN BA3837 / BA3837F / BA3838F LP RIN 10 9 – BIAS GND ...
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... Pin descriptions Pin No. Pin name MIC LOUT BA3837 / BA3837F BA3838F 5 Equivalent circuit 51k 20k 20k 400 BA3837 / BA3837F / BA3838F Function Mixing input pin for microphone sound Lch output pin Input pin for key controller signals Output pin for key controller signals 3 ...
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... Multimedia ICs Pin No. Pin name 6 6 LIN BIAS 7 8 GND 9 RIN LPF1 LPF2 4 BA3837 / BA3837F / BA3838F Equivalent circuit 51k L signal input pin V CC 51k Signal bias circuit pin 51k 51k R signal input pin 11 10.4k 10.4k LPF time constant pin 10.4k 10.4k ...
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... Multimedia ICs Pin No. Pin name LPF3 13 ROUT CONTA 15 15 CONTB 16 16 CONTC BA3837 / BA3837F / BA3838F Equivalent circuit 20k LPF output pin 20k 20k R output pin V CC Mode switching pin Mode switching pin Mode switching pin C Function 5 ...
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... input and output in the through mode are synchronous with a gain of 14dB input and TK output in the key controller mode are synchronous with a gain of 8dB input and output in the key controller mode are synchronous with a gain of 6dB. 4.MIC input and output are negative phase with a gain of 8dB. 6 BA3837 / BA3837F / BA3838F = 1kHz Min. ...
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... Multimedia ICs BA3838F (unless otherwise noted 25°C, Vcc = 10V, f Parameter Symbol Quiescent current I Q Maximum output voltage gain G VT Low frequency gain G VF Microphone gain G VM Crosstalk CT Vocal suppression rate SV Total harmonic distortion THD Noise level V N Input impedance R IN Control pin threshold (high) ...
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... Multimedia ICs • Measurement circuit (BA3838F 0.3V A MEASUREMENT 100k V AUDIO ANALYZER Rout LP V MICIN Lout 600 OSC 51k Fig. 1 BA3837 / BA3837F / BA3838F 0.047 RIN LIN BIAS GND MIC ...
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... Multimedia ICs • Application example (BA3838F) POWER AMP BA3837 / BA3837F / BA3838F – CON 51k 51k 51k + + + 0. – Key con + Fig 0.047 + TAPE, CD LD, etc MICROPHONE MICROPHONE 9 ...
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... When connecting a capacitance load higher than 10 F, insert 1k 5 output impedance is roughly 5 BA3838F it is roughly 400 (1kHz). (8) The vocal fader works by canceling out the syn- chronous component of the signal, leaving the low components in place. Consequently, the vocal fader may not be very effective with certain recordings ...
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... Multimedia ICs 10 1 0.1 0.01 0.001 – 40 – 30 – 20 – INPUT LEVEL : V (dBV) IN Fig. 6 THD vs. V characteristics IN • External dimensions (Units: mm) BA3837 19.4 0 2.54 0.5 0.1 DIP16 10 BA3837F / BA3838F 7. BA3837 / BA3837F / BA3838F 10.0 0 1.27 0.4 0.1 0.3Min. 0.15 SOP16 11 ...