MAX2440 Ver la hoja de datos (PDF) - Maxim Integrated
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MAX2440 Datasheet PDF : 12 Pages
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900MHz Image-Reject Receivers
Typical Operating Characteristics (continued)
(MAX242X/MAX246X EV kit, VCC = +3.3V; fLO = 925.7MHz (MAX2440), fLO = 961MHz (MAX2441), fLO = 985MHz (MAX2442),
fRXIN = 915MHz; PRXIN = -35dBm; VLNAGAIN = 2V; VVCOON = 2.4V; RXON = VCC; MOD = DIV1 = PREGND = GND; TA = +25°C,
unless otherwise noted.)
RECEIVER IMAGE REJECTION
vs. RF FREQUENCY
60
RXON = VCC
50
40
30
20
10
0
-10
-20
0
400 800 1200 1600 2000
RF FREQUENCY (MHz)
RECEIVER IMAGE REJECTION
vs. IF FREQUENCY
40
MAX2441
35
MAX2440
30
MAX2442
25
20
15
10
5
0
1
10
100
1000
IF FREQUENCY (MHz)
RXIN INPUT IMPEDANCE
vs. FREQUENCY
MAX2440/1/2-12
50
-100
45
40
-80
35
IMAGINARY
30
-60
25
REAL
20
-40
15
10
-20
5
0
-0
600 800 1000 1200 1400
FREQUENCY (MHz)
550
500
450
400
350
300
250
200
150
100
50
0
1
PRESCALER OUTPUT LEVEL
vs. LOAD RESISTANCE
LOAD IS PLOTTED RESISTANCE
IN PARALLEL WITH A 10pF
OSCILLOSCOPE PROBE
(÷ 64/65 MODE)
100
1k
10k
100k
LOAD RESISTANCE (Ω)
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