Datasheet

MAX2121
Complete Direct-Conversion L-Band Tuner
7
Typical Operating Characteristics (continued)
(MAX2121 Evaluation Kit: V
CC
= +3.3V, T
A
= +25°C, baseband output frequency = 5MHz, V
GC1
= +1.2V, default register settings
except BBG[3:0] = 1011, unless otherwise noted.)
PHASE NOISE AT 10kHz OFFSET vs.
CHANNEL FREQUENCY
CHANNEL FREQUENCY (MHz)
PHASE NOISE AT 10kHz OFFSET (dBc/Hz)
MAX2121 toc19
925 1115 1305 1495 1685 1875 2065 2255
-105
-100
-95
-90
PHASE NOISE vs. OFFSET FREQUENCY
MAX2121 toc20
OFFSET FREQUENCY (Hz)
PHASE NOISE (dBc/Hz)
1.0E+051.0E+04
-120
-110
-100
-90
-130
1.0E+03 1.0E+06
f
LO
= 1800MHz
LO LEAKAGE vs. LO FREQUENCY
LO FREQUENCY (MHz)
LO LEAKAGE (dBm)
MAX2121 toc21
925 1175 1425 1675 1925 2175
-90
-85
-80
-75
-70
MEASURED AT RF INPUT
VCO: KV vs. VTUNE
VTUNE (V)
KV (MHz/V)
MAX2121 toc22
0 0.5 1.0 1.5 2.0 2.5 3.0
0
50
100
150
200
250
300
350
400
450
SUB-BAND 23
SUB-BAND 12
SUB-BAND 0