Complete DBS Direct-Conversion Tuner ICs
with Monolithic VCOs
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2116/MAX2118 EV kits, V
= +4.75V to +5.25V, GC1 and GC2 set for maximum gain, GND = 0V, IOUT = QOUT = 800mV
CC
P-P
(MAX2116), loaded with 1kΩ IOUT = QOUT = 590mV
differential (DL = 0, MAX2118), IOUT = QOUT = 1V
differential (DL
P-P
P-P
= 1, MAX2118), loaded with differential 2kΩ. Baseband LPF BW = 33MHz, f
= 2175MHz. For default register values, see the
RFIN
Serial Interface and Control Registers section. T = +25°C to +85°C. Typical values are at V
= +5V, T = +25°C, unless otherwise
A
CC
A
noted.) (Note 1)
PARAMETER
VCO PERFORMANCE
CONDITIONS
MIN
TYP
MAX
UNITS
VCO Tuning Range
VCO Tuning Gain
VCO 0 to VCO 7 coverage
2250
4500
MHz
Worst case, any VCO, any tuning voltage
500
-75
-99
MHz/V
10kHz offset
Bit DIV2 = 1,
= 2175MHz
LO Phase Noise Referred to Mixer LO Port
dBc/Hz
f
LO
100kHz offset
SYNTHESIZER PERFORMANCE
Phase Detector Comparison Frequency
Reference Divide Range
0.15
2
2
MHz
128
RF Divide Range
256
0.75
32768
1.5
Level at XTALOUT
4MHz to 27MHz, driving 10pF
1
V
P-P
PLL-Referred Phase Noise Floor
XTAL Frequency Range
-143
dBc/Hz
MHz
4
27
Note 1: Parameters are production tested at T = +25°C and +85°C; limits called out at 0°C are guaranteed by design and charac-
A
terization and are not production tested.
Note 2: GCI gain control is guaranteed over this voltage range. 0.75V corresponds to maximum gain and 2.6V corresponds to
minimum gain.
Note 3: RF front-end specification met at this output level.
Note 4: The VTUNE ADC transfer curve has been tailored to that of the VCO tuning curve.
Note 5: Input IP3 test conditions: VGC1 set to provide 800mV
(MAX2116), 1V
differential (MAX2118, DL = high), 0.59V
dif-
P-P
P-P
P-P
ferential (MAX2118 DL = low) baseband output when mixing down a -25dBm tone at 2175MHz to 5MHz baseband, with
VGC2 = 00000. Two tones at -18dBm each are applied at f -100MHz and f -195MHz; IM3 tone at 5MHz is measured at
LO
LO
baseband but is referred to RF input.
Note 6: Input IP2 test conditions: VGC1 set to provide 800 mV
(MAX2116), 1V
differential (MAX2118, DL = high), 0.59V
dif-
P-P
P-P
P-P
ferential (MAX2118 DL = low) baseband output when mixing down a -25dBm tone at 2175MHz to 5MHz baseband, with
VGC2 = 0.75V. Two tones at -25dBm each are applied at f = 925MHz and f = 1245MHz; IM2 tone at f - 5MHz is mea-
RF
RF
LO
sured at baseband but is referred to RF input.
Note 7: These parameters are guaranteed by design and characterization, and are not production tested.
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