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Complete, Direct-Conversion Tuner for DVB-S
and Free-to-Air Applications
Typical Operating Characteristics
(MAX2120 Evaluation Kit: V CC = +3.3V, baseband output frequency = 5MHz; V GC1 = 1.2V; T A = +25°C. Default register settings
except BBG[3:0] = 1011.)
98
SUPPLY CURRENT vs. SUPPLY VOLTAGE
2.900
STANDBY MODE SUPPLY CURRENT
vs. SUPPLY VOLTAGE
SUPPLY CURRENT
vs. BASEBAND FILTER CUTOFF FREQUENCY
104
97
96
T A = +70°C
2.800
102
100
95
94
93
92
91
90
T A = +25°C
T A = 0°C
2.700
2.600
2.500
2.400
T A = +70°C
T A = 0°C, +25°C
98
96
94
92
90
88
89
86
88
3.0
3.1
3.2
3.3
3.4
3.5
3.6
2.300
3.0
3.1
3.2
3.3
3.4
3.5
3.6
84
4
8
12
16
20
24
28
32
36
40
SUPPLY VOLTAGE (V)
HD3 vs. OUTPUT VOLTAGE
SUPPLY VOLTAGE (V)
QUADRATURE PHASE vs. LO FREQUENCY
BASEBAND FILTER CUTOFF FREQUENCY (MHz)
QUADRATURE MAGNITUDE MATCHING
vs. LO FREQUENCY
-10
-15
-20
-25
-30
93.5
92.5
91.5
90.5
f BASEBAND = 10MHz
T A = +25°C
T A = +70°C
1.0
0.8
0.6
0.4
0.2
f BASEBAND = 10MHz
T A = +25°C
-35
0
-40
89.5
-0.2
-45
-50
88.5
T A = 0°C
-0.4
-0.6
T A = 0°C
T A = +70°C
-55
-60
87.5
86.5
-0.8
-1.0
1.0
1.5
2.0
2.5
3.0
3.5
900
1200
1500
1800
2100
2400
900
1200
1500
1800
2100
2400
V OUT (V P-P )
QUADRATURE PHASE
vs. BASEBAND FREQUENCY
LO FREQUENCY (MHz)
LO FREQUENCY (MHz)
QUADRATURE MAGNITUDE MATCHING
vs. BASEBAND FREQUENCY
93.5
92.5
91.5
90.5
f LO = 925MHz
T A = +70°C
1.0
0.8
0.6
0.4
0.2
f LO = 925MHz
T A = +70°C
89.5
T A = +25°C
T A = 0°C
0
-0.2
88.5
87.5
-0.4
-0.6
T A = +25°C
T A = 0°C
-0.8
86.5
0
4
8
12
16
20
-1.0
0
4
8
12
16
20
BASEBAND FREQUENCY (MHz)
BASEBAND FREQUENCY (MHz)
_______________________________________________________________________________________
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相关代理商/技术参数
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功能描述:RS-232接口集成电路 RoHS:否 制造商:Exar 数据速率:52 Mbps 工作电源电压:5 V 电源电流:300 mA 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:LQFP-100 封装: