|
|
SC7422SのメーカーはSilan Microelectronicsです、この部品の機能は「2CH AUDIO POWER AMPLIFIER」です。 |
部品番号 | SC7422S |
| |
部品説明 | 2CH AUDIO POWER AMPLIFIER | ||
メーカ | Silan Microelectronics | ||
ロゴ | |||
このページの下部にプレビューとSC7422Sダウンロード(pdfファイル)リンクがあります。 Total 8 pages
SC7422
2-CH AUDIO POWER AMPLIFIER 2W x 2
DESCRIPTION
The SC7422 is a class AB power amplifier which designed for dual
audio purpose. It can deliver 2W × 2 power output to the 4 load in the
5V operation voltage. Total harmonic distortion is lower than 0.03%. The
output mode can be switched between the SE and BTL mode. The
volume also can be changed by a 32 steps volume controller. Moreover,
the SC7422 requires a few extra components in the application. It is
suitable for small or portable products.
SOP-16-375-1.27
FEATURES
* Operation voltage : 5V
* Output power : 2W×2(RL=4 )
* Low harmonics distortion (THD=0.03%)
* 32 steps volume control with 1.5dB per step from -45dB to 0dB
* Two output modes (SE and BTL) switched
* Low quiescent operation current
* No POPO noise when turn on/off
* Standby function, Low standby current(Is<0.7 A)
* Thermally protected
DIP-16-300-2.54
ORDERING INFORMATION
Device
SC7422
SC7422S
Package
DIP-16-300-2.54
SOP-16-375-1.27
APPLICATIONS
* LCD Monitors for TV
* Portable audio
* Multimedia audio
* Other audio applications
www.DataSheet4U.com
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.0 2006.11.13
Page 1 of 8
1 Page SC7422
(Continued)
Characteristics
Output Offset Voltage
Supply Voltage
Rejection
Ripple
Thermally protected
Input Voltage For Shutdown
Pin
Input Voltage For
SE/BTL Pin
Symbol
Voff
SVRR
TH
VSD
VSB
Test conditions
DC Vol = 0V
From +OUT to -OUT
BTL
F=1kHz
SE
Overheat to shutdown
Return to normal operation
Shutdown = OFF
Vcc=3~5V
Shutdown = ON
BTL
Vcc=3~5V
SE
Min.
25
58
52
-
-
50%
80%
Typ.
50
60
55
120
80
20%
60%
10%
90%
Max.
100
63
58
-
-
30%
20%
Unit
mV
dB
°C
Vcc
Vcc
PIN CONFIGURATION
www.DataShPeIeNt4UD.cEoSmCRIPTION
Pin No.
1
2
3
4
5
6
7
8
9
10
11
Pin Name
Shutdown
VCC
DC Vol
VO1
VIN1
VIN2
VO2
GND
+OUT2
VCC
-OUT2
12 SE/BTL
I/O Pin Description
I Stand-by control, logic high active
-- Supply
I Volume control
I Buffer output of channel 1
I Signal input of channel 1
I Signal input of channel 2
I Buffer output of channel 2
-- Ground
O Non inverted loudspeaker output of channel 2
-- Supply
O Inverted loudspeaker output of channel 2
Output mode control. When this pin is logic high, SE mode is selected.
I
When it is logic low, BTL mode is selected.
(To be continued)
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.0 2006.11.13
Page 3 of 8
3Pages SC7422
There is the formula of heat sinking for the SC7422:
JA = (TJ(max) -TA )/ PDISS
Where JA is the thermal resistance from junction to ambient, TJ(max) is the junction temperature, TA is ambient
temperature, PDISS is the power dissipation.
If the junction temperature remains below 150°C but the ambient temperature has reached to 50°C, the total
junction-to-ambient thermal resistance must be less than JA calculated as follows:
JA = (150°C - 50°C) / 2.6W =38.4°C/W.
Using JC=26°C /W, the heat-sink thermal resistance must be less than:
JA - JC = 12.4°C/W
So the SC7422 doesn’t need heat sink in the normal operation. In application, the copper foil which connects
GND on PCB can be utilized for heat sinking to maintain proper operation temperature.
TYPICAL APPLICATION CIRCUIT
www.DataSheet4U.com
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:1.0 2006.11.13
Page 6 of 8
6 Page | |||
ページ | 合計 : 8 ページ | ||
|
PDF ダウンロード | [ SC7422S データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
SC7422 | 2CH AUDIO POWER AMPLIFIER | Silan Microelectronics |
SC7422S | 2CH AUDIO POWER AMPLIFIER | Silan Microelectronics |