BA3837

Manufacturer Part NumberBA3837
DescriptionVocal fader IC
ManufacturerRohm
BA3837 datasheet
 
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Multimedia ICs
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.
By offering these functions on a single chip, these ICs can significantly reduce the number of external components.
Applications
Karaoke functions on stereo systems, portable stereos and VCRs
Features
1) Single-chip IC with vocal fader, to erase vocals from
commercially available recordings.
2) Internal secondary active LPF for high degrees of
vocal cancellation (high synchronization rejection).
3) Three control pins for switching between 4 modes:
through, vocal fader, sound multiplexing and mute.
Absolute maximum ratings (Ta = 25°C)
Parameter
Symbol
Power supply voltage
V
DIP16
Power
Pd
dissipation
SOP16
Operating temperature
Topr
Storage temperature
Tstg
1 Reduced by 10 mW for each increase in Ta of 1 C over 25 C.
2 Reduced by 5.5mW for each increase in Ta of 1 C over 25 C.
Recommended operating conditions (Ta = 25°C)
Parameter
Symbol
1
Power supply voltage
V
CC
1
Power supply voltage
V
CC
2
Power supply voltage
V
CC
1 BA3837 and BA3837F
2 BA3838F
4) Key controller input and internal switches.
5) Low noise and low distortion.
6) Internal microphone mixing amplifier.
7) Available in two packages: DIP 16-pin and SOP 16-
pin (BA3838F is available in SOP 16-pin only).
Limits
Unit
18
V
CC
1
1000
mV
2
550
– 40 ~ + 85
– 55 ~ + 125
Min.
Typ.
Max.
Unit
5.4
10
V
5.4
13
V
4.0
15
V
C
C
Conditions
Ta = – 40 C ~ + 85 C
Ta = – 40 C ~ + 60 C
Ta = 25 C
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BA3837 Summary of contents