HFA3763 Ver la hoja de datos (PDF) - Intersil
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HFA3763 Datasheet PDF : 10 Pages
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HFA3763
AC Electrical Specifications, RX/TX 5TH Order LPF Individual Performance
VCC = 4.5V to 5.5V Unless Otherwise Specified (Continued)
PARAMETER
(NOTE 10) TEMP
TEST LEVEL (oC)
MIN
TX LPF 3dB Bandwidth Tuning
B
25
-20
LPF Tune Nominal Resistance
B
25
-
TX/RX LPF Total Harmonic Distortion
B
25
-
LPF Output Impedance, Single Ended
C
25
-
NOTE:
10. A = Production Tested, B = Based on Characterization, C = By Design
TYP
MAX
-
+20
787
-
1
-
50
-
UNITS
%
Ω
%
Ω
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----AE----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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