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參數(shù)資料
| 型號： | LX1802 |
| 廠商： | MICROSEMI CORP |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | PLUG for MED427A-1 |
| 中文描述： | SPECIALTY ANALOG CIRCUIT, UUC4 |
| 封裝： | DIE-4 |
| 文件頁數(shù)： | 1/5頁 |
| 文件大?。?/td> | 143K |
| 代理商： | LX1802 |
Microsemi
Carlsbad Division
5973 Aveniva Encinas, Suite 101, Carlsbad 92008, Fax (760) 431-0541
1
Copyright
2001
Rev. 0.2b, 2002-06-17
W
M
.
C
LX1802
"PLUG" for MED427A-1
TARGET DATASHEET
CARLSBAD DIVISION
BLOCK DIAGRAM
Simplified Block Diagram
PACK AGE ORDER INFO
T
J
(
°
C)
10 to 55
Package Number
LX1802
DESCRIPTION
The MSC-LX1802 is the IC2 "Plug" for the MED427A-1 module. The "Plug"
chip has peak rectifier, level shifter, and switch. This full wave peak rectifier
converts the peak to peak AC input waveform to a DC level. The charge builds
up on both terminals of the storage capacitor to step up the DC level during a full
wave input signal. The charge dissipates via a resistor when the AC input signal
stops. The level shifter is a source follower transistor with a resistive load. The
input connects to the peak rectifier output and the output connects to IGBT_G. If
the input voltage is below threshold, the output (IGBT_G) equals IGBT_E
voltage. If the input voltage exceeds the threshold voltage of the transistor, the
output steps up to the bootstrap voltage Vhi+IGBT_E at the IGBT_G output. The
switch supplements the discharge of the capacitor in the peak rectifier when the
AC input signal stops. The switch remains open when there is an AC signal since
a virtual ground forms at its input and prevents a channel from forming in the
active device. The opposite occurs when the AC signal stops and the input builds
a potential greater than a threshold voltage.
IMPORTANT:
For the most current data, consult
MICROSEMI
’s website:
http://www.microsemi.com
K EY FE AT URES
Low peak current
consumption: <2mA
Small form factor 0.889 mm
2
Solder bumped die
APPLICAT IONS
Implantable Cardio Defib
L
X
1
8
0
2
in
IGBT_G
Peak
Rect
IGBT_E
Level
Shifter
Clamp
Switch
Vhi
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