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參數(shù)資料
| 型號(hào)： | MAX881 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Low-Noise Bias Supply in レMAX with Power-OK for GaAsFET PA |
| 中文描述： | 低噪聲偏置電源在レ最大的功率為GaAsFET功率放大器行 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 111K |
| 代理商： | MAX881 |
M
Low-Noise Bias S upply in μMAX
with Power-OK for GaAsFET PA
_______________________________________________________________________________________
5
CHARGE PUMP
NEGOUT
SHDN
0.5V
0.4625V
GND
C1+
C1
C2
C4
C3
IN
OUT
FB
POK
C1-
MAX881R
Pin Desc ription
Ground
GND
8
No Connection. Not internally connected.
N.C.
9
Positive Power-Supply Input
IN
10
Active-Low, Logic-Level Shutdown Input. Connect to IN for normal operation. Do not leave this pin
unconnected.
SHDN
5
Dual-Mode Feedback Input. When FB is connected to GND, the output is preset to -2V. To select
other voltages, connect FB to an external resistor-divider (Figure 4). Do not leave this pin
unconnected.
FB
6
Regulated Negative Output Voltage
OUT
7
Active-Low, Open-Drain Power-OK Output. Goes low when OUT reaches 92.5% of its set value.
POK
4
Negative Output Voltage (unregulated)
NEGOUT
3
PIN
Negative Terminal for C1
C1-
2
Positive Terminal for C1
C1+
1
FUNCTION
NAME
Figure 1. Functional Diagram
Dual-Mode is a trademark of Maxim Integrated Products.
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