ISDB-T 1-Segment Tuner
AC ELECTRICAL CHARACTERISTICS (continued)
(MAX2163 Evaluation Kit, V CC = +2.4V to +3.47V, f RF = 557.143MHz, f LO = 557.714MHz, f IF = 571kHz, f XTAL = 36MHz, V GC1 = V GC2 =
0.3V (maximum gain), default register settings, RF input signals as specified, IF output load as specified, T A = -40°C to +85°C, unless
otherwise noted. Typical values are at V CC = +2.5V, T A = +25°C, SHDN = V CC , STBY = GND, unless otherwise noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CRYSTAL OSCILLATOR INPUT (XTAL)
Frequency Range
Input Capacitance
Crystal load capacitance
32
8
36
MHz
pF
Input Overdrive Level
Input Negative Resistance
AC-coupled sine wave input
f XTAL = 36MHz
0.5
575
1.5
V P-P
REFERENCE OSCILLATOR BUFFER OUTPUT (XTALOUT)
Output Frequency Range
16
18
MHz
Output Voltage Swing
Z L = 4k ||10pF
0.5
1.0
V P-P
Output Buffer Divide Range
Output Duty Cycle
Output Turn-On Time
XTAL amplitude > 0.5V P-P
2
45
2
55
4
%
ms
Note 1: Min and max values are production tested at T A = +85°C. Min and max limits at T A = -40°C and +25°C are guaranteed by
design and characterization.
Note 2: IFOUT output voltage level met over this range.
Note 3: In-band IM3 is measured with two tones at f LO - 450kHz and f LO - 550kHz. The RFAGC is engaged and set for the default
attack point of -58dBm. IFL[1:0] = 01, RFVGA = MXR = 1. V GC2 is adjusted to maintain 225mV P-P at IF OUT . Input power levels
(tone 1 plus tone 2) up to -10dBm and > 30dBc for levels from -10dBm to 0dBm.
Note 4: V GC1 is set for maximum attenuation (2.1V) and V GC2 is adjusted to maintain 225mV P-P at I FOUT for an equivalent 0dBm
input desired level. Closed loop, attack point at -58dBm, f RF = 767.143MHz, f LO = 767.714MHz, f RF1 = f RF + 4.25MHz,
f RF2 = f RF + 8MHz, -10dBm/tone. RFGR = 1, RFVGA = 1, and MXR = 1.
_______________________________________________________________________________________
5
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