MAX2121
Complete Direct-Conversion L-Band Tuner
4
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2121 Evaluation Kit: V
CC
= +3.13V to +3.47V, T
A
= -40°C to +85°C, default register settings except BBG[3:0] = 1111. Typical
values measured at V
CC
= +3.3V, T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER CONDITIONS MIN TYP MAX UNITS
VOLTAGE-CONTROLLED OSCILLATOR AND LO GENERATION
Guaranteed LO Frequency Range 925 2175 MHz
f
OFFSET
= 10kHz -97
f
OFFSET
= 100kHz -100
LO Phase Noise
f
OFFSET
= 1MHz -122
dBc/Hz
XTAL/REFERENCE OSCILLATOR INPUT AND OUTPUT BUFFER
XTAL Oscillator Frequency
Range f
XTAL
Parallel-resonance-mode crystal (Note 7) 12 30 MHz
Input Overdrive Level AC-coupled sine-wave input 0.5 1 2.0 V
P-P
XTAL Output-Buffer Divider
Range
1 8
XTAL Output Voltage Swing 12MHz to 30MHz, C
LOAD
= 10pF 1 1.5 2 V
P-P
XTAL Output Duty Cycle 50 %
Note 1: Min/max values are production tested at T
A
= +25°C. Min/max limits at T
A
= -40°C and T
A
= +85°C are guaranteed by
design and characterization.
Note 2: Guaranteed by design and characterization at T
A
= +25°C.
Note 3: Input gain range specifications met over this band.
Note 4: In-band IIP3 test conditions: GC1 set to provide the nominal baseband output drive when mixing down a -23dBm tone at
2175MHz to 5MHz baseband (f
LO
= 2170MHz). Baseband gain is set to its default value (BBG[3:0] = 1011). Two tones at
-26dBm each are applied at 2174MHz and 2175MHz. The IM3 tone at 3MHz is measured at baseband, but is referred to the
RF input.
Note 5: Out-of-band IIP3 test conditions: GC1 set to provide nominal baseband output drive when mixing down a -23dBm tone at
2175MHz to 5MHz baseband (f
LO
= 2170MHz). Baseband gain is set to its default value (BBG[3:0] = 1011). Two tones at
-20dBm each are applied at 1919MHz and 1663MHz. The IM3 tone at 5MHz is measured at baseband, but is referred to the
RF input.
Note 6: Input IP2 test conditions: GC1 set to provide nominal baseband output drive when mixing down a -23dBm tone at 2175MHz
to 5MHz baseband (f
LO
= 2170MHz). Baseband gain is set to its default value (BBG[3:0] = 1011). Two tones at -20dBm
each are applied at 925MHz and 1250MHz. The IM2 tone at 5MHz is measured at baseband, but is referred to the RF input.
Note 7: See Table 16 for crystal ESR requirements.