M
Complete DBS Direct-Conversion Tuner ICs
with Monolithic VCOs
_______________________________________________________________________________________
5
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.
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
4500
MHz
MHz/V
500
-75
-99
10kHz offset
100kHz offset
LO Phase Noise Referred to Mixer LO Port
Bit DIV2 = 1,
f
LO
= 2175MHz
dBc/Hz
SYNTHESIZER PERFORMANCE
Phase Detector Comparison Frequency
Reference Divide Range
RF Divide Range
Level at XTALOUT
PLL-Referred Phase Noise Floor
XTAL Frequency Range
0.15
2
256
0.75
2
MHz
128
32768
1.5
4MHz to 27MHz, driving 10pF
1
V
P-P
dBc/Hz
MHz
-143
4
27
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2116/MAX2118 EV kits, V
CC
= +4.75V to +5.25V, GC1 and GC2 set for maximum gain, GND = 0V, IOUT = QOUT = 800mV
P-P
(MAX2116), loaded with 1k
IOUT
±
= QOUT
±
= 590mV
P-P
differential (DL = 0, MAX2118), IOUT
±
= QOUT
±
= 1V
P-P
differential (DL
= 1, MAX2118), loaded with differential 2k
. 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)