HFA3761IN 데이터 시트보기 (PDF) - Intersil
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HFA3761IN Datasheet PDF : 9 Pages
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HFA3761
TABLE 1. LOW PASS FILTER PROGRAMING AND TUNING INFORMATION
MODE
BW0
LPF SEL1
0
LPF SEL0
0
f3dB
(NOMINAL RTUNE)
2.2MHz
BW1
0
1
4.4MHz
BW2
1
0
8.8MHz
BW3
1
1
17.6MHz
fTUNED3dB = -f-3----d---B----N----RO----T-M---U-I--N-N---A-E---L---∗----7---8---7--
+20%
-20%
-30 -25 -20 -15 -10 -5 0 +5 +10 +15 +20 +25 +30
[(787 - RTUNE)/RTUNE] * 100%
FREQUENCY
20% Low
RTUNE
984Ω
Nominal
787Ω
20% High
656Ω
FIGURE 1. TYPICAL f3dB vs RTUNE
4-9
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