MAX2104
Direct-Conversion Tuner IC for
Digital DBS Applications
_______________________________________________________________________________________ 5
Note 1: Minimum and maximum values are guaranteed by design and characterization over supply voltage.
Note 2: With external 100Ω termination resistor.
Note 3: Driving differential load of 10kΩ || 15pF.
Note 4: Two signals are applied to RFIN_ at f
LO
- 100MHz and f
LO
- 199MHz. V
GC2
= 1V; V
GC1
is set such that the baseband out-
puts are at 590mV
P-P
. IM products are measured at baseband outputs but are referred to RF inputs.
Note 5: Two signals are applied to RFIN_ at 1200MHz and 2150MHz. V
GC2
= 1V, V
GC1
is set such that the baseband outputs are
at 590mV
P-P
. IM products are measured at baseband outputs but are referred to RF inputs.
Note 6: P
RFIN_
= -40dBm so that front end IM contributions are minimized.
Note 7: Using L64733/L64734 demo board from LSI Logic.
Note 8: Downconverted level, in dBc, of carrier present at f
LO
x 2, f
LO
= 1180MHz, f
VCO
= 590MHz, V
FDOUB
= 2.4V.
Note 9: Downconverted level, in dBc, of carrier present at f
O
/ 2, f
LO
= 2175MHz, f
VCO
= 1087.5MHz, V
FDOUB
= 2.4V.
Note 10: Leakage is dominated by board parasitics.
Note 11: V
CPG1
= V
CPG2
= V
FDOUB
= V
INSEL
= 0.5V, f
FLCLK
= 0.5MHz.
Note 12: Measured at tuned frequency with PLL locked. All phase noise measurements assume tank components have a Q > 50.
AC ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 4.75V to 5.25V, V
IOUT_
= V
QOUT_
= 0.59V
P-P
, C
IOUT_
= C
QOUT_
= 10pF, f
FLCLK
= 2MHz, R
IOUT_
= R
QOUT_
= 10kΩ,
V
FDOUB
= V
INSEL
= V
CPG1
= V
CPG2
= 2.4V, V
PLLIN+
= V
MOD+
= 1.3V, V
PLLIN-
= V
MOD-
= 1.1V, T
A
= +25°C. Typical values are at
V
CC
= 5.0V and T
A
= +25°C, unless otherwise noted.)
LOCAL OSCILLATOR
SYNTHESIZER
-95
PARAMETER SYMBOL MIN TYP MAX UNITS
At 100kHz offset, f
LO
= 2175MHz
dBc/HzLO Phase Noise (Notes 7, 12)
-75At 10kHz offset, f
LO
= 2175MHz
57
0Figure 1
f
RFIN_
= 2150MHz dB
RFIN_ to LO Input Isolation
(Note 10)
-55
590 1180 MHzLO Tuning Range (Note 1)
ns
4 7.26 MHzCrystal Frequency Range (Note 1)
2
0.75 1 1.5
Load = 10pF
||
10kΩ, f
XTLOUT
= 6MHz
V
P-P
XTLOUT Output Voltage Swing
VXTLOUT Output Voltage DC
At 1kHz offset, f
LO
= 2175MHz
MOD+, MOD- Hold Time (Note 1) t
HM
7Figure 1
CONDITIONS
nsMOD+, MOD- Setup Time (Note 1) t
SUM
SYNTHESIZER
LOCAL OSCILLATOR
(10 paginas)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales