參數(shù)資料
型號(hào): LTC5583IUF#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 電源管理
英文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PQCC24
封裝: 4 X 4 MM, LEAD FREE, PLASTIC, MO-220WGGD-X, QFN-24
文件頁數(shù): 17/28頁
文件大?。?/td> 1136K
代理商: LTC5583IUF#TRPBF
LTC5583
24
5583fa
APPLICATIONS INFORMATION
Envelope Detector Output: ENVA, ENVB
Each envelope detector output linearly follows the instan-
taneous input power level, tracking the input signal’s RF
envelope. ENVA and ENVB also indicate the peak-to-av-
erage power ratio (crest factor). Thus, reading both VOA
and ENVA provides the average power, peak-to-average
power ratio, peak power, and RF envelope of the input
signal to Channel A. Reading VOB and ENVB provides the
same information for Channel B.
Enable: EN
A simplified schematic of the EN pin interface is shown
in Figure 13. The enable voltage necessary to turn on the
LTC5583 is 2V. To disable or turn off the chip, set this volt-
age below 0.3V. It is important that the voltage applied to
the EN pin should never exceed VCC by more than 0.3V.
Otherwise, the supply current may be sourced through
the upper ESD protection diode connected at the EN pin.
Under no circumstances should voltage be applied to the
EN pin before the supply pins (VCCA, VCCB, VCCR, VCCN).
If this occurs, damage to the IC may result.
5583 F12
LTC5583
VCC
ENVA OR
ENVB
Figure 12. Simplified Schematic of the ENVA and ENVB Pin
Figure 13. Simplified Schematic of the Enable Pin
5583 F13
LTC5583
VCC
49k
EN
49k
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