Rainbow Electronics MAX2108 - Manual (Page 4)

MAX2108
Direct-Conversion Tuner IC
4 _______________________________________________________________________________________
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
0
20
10
30
60
70
50
40
80
-55 -45 -40 -35 -30 -50 -25 -20 -15 -10
IM3 vs. CARRIER LEVEL
MAX2108 toc04
RF INPUT LEVEL (dBm)
IM3 (dBc)
TWO-TONE FREQUENCY
SPACING EQUALS 2MHz
5
7
6
9
8
11
10
12
14
13
15
950 1150 1350 1550 1750
NOISE FIGURE vs. FREQUENCY
MAX2108 toc05
RF FREQUENCY (MHz)
NF (dB)
V GC = 4V
5
10
15
20
25
20 26 28 22 24 30 32 34 36 38
NOISE FIGURE vs. INSERTION GAIN
(RF TO BASEBAND)
MAX2108 toc06
GAIN (dB)
NF (dB)
-40
-20
-30
20
10
0
-10
40
30
900 1100 1300 1500 1700 1900 2100
RF PORT SERIES IMPEDANCE
vs. FREQUENCY
MAX2108 toc07
FREQUENCY (MHz)
SERIES IMPEDANCE (
Ω
)
V
GC
= 4V
REAL
IMAGINARY
-70
-40
-50
-60
-20
-30
20
10
0
-10
40
30
900 1100 1300 1500 1700 1900 2100
RF PORT SERIES IMPEDANCE
vs. FREQUENCY
MAX2108 toc08
FREQUENCY (MHz)
SERIES IMPEDANCE (
Ω
)
REAL
IMAGINARY
V GC = 1V
-70
-40
-50
-60
-20
-30
20
10
0
-10
30
900 1100 1300 1500 1700 1900 2100
LO PORT SERIES IMPEDANCE
vs. FREQUENCY
MAX2108 toc10
FREQUENCY (MHz)
SERIES IMPEDANCE (
Ω
)
REAL
IMAGINARY
SINGLE-ENDED
0.1 10 1 100 1000
NORMALIZED BASEBAND GAIN
vs. BASEBAND FREQUENCY
MAX2108 toc11
BASEBAND FREQUENCY (MHz)
NORMALIZED BASEBAND GAIN (dB)
5
-5
0