|
|
PDF BA3708F Data sheet ( Hoja de datos )
| Número de pieza | BA3708F | |
| Descripción | Mute detector IC for 3V sets | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de BA3708F (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
Audio ICs
Mute detector IC for 3V sets
BA3708F
The BA3708F is a mute detector IC for 3V tape players. When the signal is higher than the input decision level VIN and
longer than the song detect time, a pulse of width TW is output after the pulse delay time TD which begins when the input
signal ends. The output is an open collector which enables direct drive of the plunger. A mute function is included which
makes it possible to stop detection.
FApplications
3V tape players
FFeatures
1) Low supply voltage (can be operated at 1.8V; recom-
mended operating voltage is 2.0 to 5.0V).
2) Uses the song detection method to minimize incor-
rect detection caused by noise between songs.
3) The pulse delay time TD, pulse width TW, and song de-
tect time TC can be set using external CR time
constants.
4) Includes a mute circuit which makes it possible to
stop song selection.
5) Built-in output transistor enables direct drive of the
plunger. (IO Max. = 100mA)
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions
738
1 page  
Audio ICs
(3) Song detect time TC and mute circuit
To prevent incorrect detection due to noise between
songs, a song detect function has been included. With
this function, the plunger activate pulse is only output
when the input signal is longer than the song detect time
TC, and therefore a song. A pulse is not output for noise
signals shorter than TC. The length of TC is set by the val-
ue of the capacitor CC connected to Pin 6. (See Fig. 18
for the relation between CC and TC.)
BA3708F
(4) Output circuit
The output circuit is an open collector which is suitable
for mechanical systems where the plunger is on during
song selection. The pulse width TW is 200 ms and the
duty cycle is 30%, and drive is possible up to an output
current IOUT = 100mA. The output is OFF (high) while the
mute function operates. A discharge diode must be add-
ed in parallel with the plunger solenoid.
If Pin 6 is connected to ground, the mute circuit will oper-
ate and song detection will stop. In this case, the value
of the input resistor connected to Pin 3 will be smaller
(approximately 1kΩ), and this will prevent the increase of
crosstalk between the left and right channels.
FElectrical characteristic curves
742
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet BA3708F.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BA3708F | Mute detector IC for 3V sets | ROHM Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |