MAX2102 Ver la hoja de datos (PDF) - Maxim Integrated
Número de pieza
componentes Descripción
Fabricante
MAX2102 Datasheet PDF : 16 Pages
| |||
Direct-Conversion Tuner ICs for
Digital DBS Applications
Typical Operating Characteristics (continued)
(MAX2102 EV kit circuit (Figure 1), VCC = 5V, PSGND = open, MOD = GND, fRFIN = 2150MHz, PRFIN = -19dBm, fLO = 2150.125MHz,
PLO = -15dBm driven single-ended into LO, AGC set via servo loop for VIOUT = VQOUT = 0.5Vp-p, IOUT, QOUT drive AC-coupled
100Ω loads, 2kΩ from PSOUT to GND, TA = +25°C, unless otherwise noted.)
LO PORT IMPEDANCE vs. FREQUENCY
(UNMATCHED)
100
50
REAL
0
-50
IMAGINARY
-100
-150
-200
0.8 1.1 1.4 1.7 2.0 2.3
FREQUENCY (GHz)
IM3 LEVELS vs. INPUT CARRIER
POWER LEVEL
60
50
40
30
20
10
0
-10
TA = 0°C
TA = +25°C
TA = +70°C
f1 = 2148.1MHz
f2 = 2149MHz
fLO = 2151MHz
AGC SET VIA SERVO LOOP
FOR 0.5V PER TONE
-15 -20 -25 -30 -35 -40
SINGLE INPUT CARRIER LEVEL (dBm)
LO PORT IMPEDANCE vs. FREQUENCY
100
MATCHED: MAX2102 TYPICAL
80 OPERATING CIRCUIT
REAL
60
40
IMAGINARY
20
0
-20
-40
0.8 1.1 1.4 1.7 2.0 2.3
FREQUENCY (GHz)
IM3 LEVELS vs. INPUT CARRIERS
POWER LEVEL
70
TA = 0°C
60
50
40
30
20
10
0
-10
TA = +70°C
TA = +25°C
f1 = 1448.1MHz
f2 = 1449MHz
fLO = 1451MHz
AGC SET VIA SERVO LOOP
FOR 0.5Vp-p PER TONE
-15 -20 -25 -30 -35 -40
SINGLE INPUT CARRIER LEVEL (dBm)
100
80
60
40
20
0
-20
-40
-60
-80
-100
0.8
RFIN PORT IMPEDANCE
vs. FREQUENCY
REAL
IMAGINARY
MATCHED PER
EV KIT CIRCUIT
1.1 1.4 1.7 2.0 2.3
FREQUENCY (GHz)
LO LEAKAGE AT RFIN vs. FREQUENCY
(SINGLE-ENDED LO DRIVE)
-30
-40
PLO = -5dBm
-50
-60
-70
PLO = -15dBm
PLO = -10dBm
-80
-90
-100
0.8 1.1 1.4 1.7 2.0 2.3
FREQUENCY (GHz)
LO LEAKAGE AT RFIN vs. FREQUENCY
(DIFFERENTIAL LO DRIVE)
-30
AGC SET FOR PRFIN = -69dBm
-40 PLO REFERS TO POWER INTO
LO AND LO
-50
-60
-70
PLO = -5dBm
-80
PLO = -10dBm
-90
PLO = -15dBm
SPURIOUS DOWNCONVERSION DUE TO
INTERNALLY GENERATED LO 2ND HARMONIC
-30
fLO = 1075.5MHz
-31
fRFIN = 2150MHz
PRFIN = -69dBm LO DRIVEN
SINGLE ENDED
-32
-33
-34 LO, LO DRIVEN DIFFERENTIAL
(PLO = -15dBm, PLO = -15dBm)
-35
-100
0.8 1.1 1.4 1.7 2.0 2.3
FREQUENCY (GHz)
-36
-20
-15
-10
-5
LO POWER (dBm)
_______________________________________________________________________________________ 7
Share Link: 