Complete DBS Direct-Conversion Tuner ICs
with Monolithic VCOs
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2116/MAX2118 EV kits, V CC = +4.75V to +5.25V, GC1 and GC2 set for maximum gain, V GND = 0, V IOUT = V QOUT = 800mV P-P
(MAX2116), loaded with 1k Ω V IOUT ± = V QOUT ± = 590mV P-P differential (DL = 0, MAX2118), V IOUT ± = V QOUT ± = 1V P-P differential (DL
= 1, MAX2118), loaded with differential 2k Ω . Baseband LPF BW = 33MHz, f RFIN = 2175MHz. For default register values, see the
Serial Interface and Control Registers section. T A = +25°C to +85°C. Typical values are at V CC = +5V, T A = +25°C, unless otherwise
noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
VCO PERFORMANCE
VCO Tuning Range
VCO Tuning Gain
VCO 0 to VCO 7 coverage
Worst case, any VCO, any tuning voltage
2250
500
4500
MHz
MHz/V
LO Phase Noise Referred to Mixer LO Port
Bit DIV2 = 1,
f LO = 2175MHz
10kHz offset
100kHz offset
-75
-99
dBc/Hz
SYNTHESIZER PERFORMANCE
Phase Detector Comparison Frequency
Reference Divide Range
RF Divide Range
0.15
2
256
2
128
32768
MHz
Level at XTALOUT
4MHz to 27MHz, driving 10pF
0.75
1
1.5
V P-P
PLL-Referred Phase Noise Floor
-143
dBc/Hz
XTAL Frequency Range
4
27
MHz
Note 1: Parameters are production tested at T A = +25°C and +85°C; limits called out at 0°C are guaranteed by design and charac-
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 P-P (MAX2116), 1V P-P differential (MAX2118, DL = high), 0.59V P-P dif-
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 LO -100MHz and f LO -195MHz; IM3 tone at 5MHz is measured at
baseband but is referred to RF input.
Note 6: Input IP2 test conditions: VGC1 set to provide 800 mV P-P (MAX2116), 1V P-P differential (MAX2118, DL = high), 0.59V P-P dif-
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 RF = 925MHz and f RF = 1245MHz; IM2 tone at f LO - 5MHz is mea-
sured at baseband but is referred to RF input.
Note 7: These parameters are guaranteed by design and characterization, and are not production tested.
_______________________________________________________________________________________
5
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