Rainbow Electronics MAX2105 - Manual (Page 8)

MAX2102/MAX2105
Direct-Conversion Tuner ICs for
Digital DBS Applications
8 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(MAX2102 EV kit circuit (Figure 1), V CC = 5V, PSGND = open, MOD = GND, f RFIN = 2150MHz, P RFIN = -19dBm, f LO = 2150.125MHz,
P LO = -15dBm driven single-ended into LO, AGC set via servo loop for V IOUT = V QOUT = 0.5Vp-p, IOUT, QOUT drive AC-coupled
100 Ω loads, 2k Ω from PSOUT to GND, T A = +25°C, unless otherwise noted.)
0
20
10
30
60
70
50
40
80
0.7 0.9 1.0 1.1 1.2 0.8 1.3 1.4 1.5 1.6 1.7
BASEBAND IM LEVELS
MAX2102/05-20
BASEBAND LEVELS, PER TONE (Vp-p)
IM LEVELS (dBc)
IM2
IM3
f1 = 1448.1MHz
f2 = 1449MHz
f
LO = 1451MHz
P RFIN = -40dBm PER TONE
87
88
89
90
91
92
93
0.85 1.25 1.65 2.05 2.45
QUADRATURE PHASE IMBALANCE
vs. FREQUENCY
MAX2102/05-16
RFIN FREQUENCY (GHz)
QOUT PHASE RELATIVE TO IOUT PHASE (degrees)
f LO = f RFIN + 125kHz
P RFIN = -40dBm
P LO = -15dBm
T A = +70°C
T
A
= 0°C
T A = +25°C
-0.5
-0.3
-0.4
-0.2
0
-0.1
0.2
0.1
0.3
0.4
0.5
0.85 1.25 1.65 2.05 2.45
QUADRATURE GAIN IMBALANCE
vs. FREQUENCY
MAX2102/05-17
RFIN FREQUENCY (GHz)
QOUT LEVEL RELATIVE TO IOUT LEVEL (dB)
T
A
= +70°C
f LO = f RFIN + 125kHz
P RFIN = -40dBm
P LO = -15dBm
T A = +25°C
T A = 0°C
5
-5
1 10 100
BASEBAND GROUP DELAY
FLATNESS vs. FREQUENCY
-3
-4
MAX2102/05-19
FREQUENCY (MHz)
BASEBAND GROUP DELAY (ns)
-1
-2
1
2
0
3
4
T A = +70°C
T A = +25°C
T A = 0°C
2
-3
0.1 10 100
BASEBAND GAIN FLATNESS
vs. FREQUENCY
-2
1
0
-1
MAX2102/05-18
FREQUENCY (MHz)
BASEBAND GAIN (dB)
1
T A = +70°C
T A = +25°C
T A = 0°C
8
7
0
0.1 1 10 100
BASEBAND OUTPUT IMPEDANCE
vs. FREQUENCY
3
2
1
5
4
6
MAX2102/05-21
FREQUENCY (MHz)
BASEBAND OUTPUT IMPEDANCE (
Ω
)