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PDF SD7401 Data sheet ( Hoja de datos )
| Número de pieza | SD7401 | |
| Descripción | SIX-CHANNEL AUDIO AMPLIFIER | |
| Fabricantes | Silan Microelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SD7401 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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SD7401
SIX-CHANNEL AUDIO AMPLIFIER
DESCRIPTION
SD7401 is a 6-channel audio amplifier with built-in microphone input
amplifier. High quality audio output is available through simple
peripheral circuit and the amplifier gain can be adjusted flexibly by
external resistor.
It is widely used as pre-amplification in various multi-channel audio
systems.
FEATURES
* BICMOS technology
* Dual power supply (+5V/-12V)
* Built-in voltage regulation module
* Low distortion
* Standby function
* Mute function
* ON/OFF POP noise suppression
ORDERING INFORMATION
Part No.
SD7401
Package
SSOP-20-225-0.65
Marking
SD7401
SSOP-20-225-0.65
APPLICATIONS
* Audio amplification system, such as
VCD/DVD
BLOCK DIAGRAM
www.DataSheet4U.com
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0 2008.07.07
Page 1 of 7
1 page  
SD7401
connected to Vcc (high level) and comes to normal mode when connected to ground.
Pin 2 is used for POP noise restrain by connecting an external capacitor which can be increased appropriately
for better POP noises restrain effect. In general, POP noise restrain is realized by mute control. Mute pulse is
generated when turned on for zero output and ended after powered on for normal output; mute pulse is also
generated when power supply is threshold value below during turned off for zero output. Thus, pop noise is
restrained during power on/down.
4. Power supply
The built-in voltage regulator for negative power supply is shown as below. An external resistor R guarantees
voltage stability near -5 V on pin 19 and the chip power supply is ±5V for normal operation. Because the
negative power to provide current is decided by this resistance, if the system output is light load, this
resistance can be properly increased to reduce operate current, but the voltage of PIN 19 must be maintained
and can not drop significantly.
5. System standby
The pin STBY_N controls system entering standby mode by turning off internal amplifier bias circuit. When this
pin is connected to Vss, system enters standby mode, and when floated, system works normally.
Note: internal voltage regulating circuit still works in standby mode and supplies working current.
www.DataSheet4U.com
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http://www.silan.com.cn
REV:1.0 2008.07.07
Page 5 of 7
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet SD7401.PDF ] | |
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