參數(shù)資料
型號: MAX2112
廠商: Maxim Integrated Products, Inc.
英文描述: Complete, Direct-Conversion Tuner for DVB-S2 Applications
中文描述: 完備的直接變頻調諧器,用于DVB-S2系統(tǒng)
文件頁數(shù): 6/19頁
文件大?。?/td> 313K
代理商: MAX2112
M
Complete, Direct-Conversion
Tuner for DVB-S2 Applications
6
_______________________________________________________________________________________
Typical Operating Characteristics (continued)
(MAX2112 Evaluation Kit: V
CC
= +3.3V, T
A
= +25°C, baseband output frequency = 5MHz; V
GC1
= +1.2V, default register settings
except ICP = 1 and BBG[3:0] = 1011.)
BASEBAND FILTER HIGHPASS
FREQUENCY RESPONSE
M
BASEBAND FREQUENCY (MHz)
B
1000
-10
-8
-4
-6
-2
0
2
-14
-12
100
10,000
PROGRAMMED f
-3dB
FREQUENCY
vs. MEASURED f
-3dB
FREQUENCY
M
PROGRAMMED f
-3dB
FREQUENCY (MHz)
M
-
40
20
15
25
30
35
5
10
5
10
20
15
25
35
30
40
45
0
0
45
LPF[7:0] = 12 + (f-3dB - 4MHz) / 290kHz
BASEBAND FILTER 3dB FREQUENCY
vs. TEMPERATURE
TEMPERATURE (
°
C)
B
-
M
-40
-20
0
20
40
60
80
-1.0
-0.8
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
NORMALIZED TO T
A
= +25
°
C
INPUT POWER vs. V
GC1
V
GC1
(V)
I
M
0.5
1.0
1.5
2.0
2.5
3.0
-80
-70
-60
-50
-40
-30
-20
-10
0
10
ADJUST BBG[3:0] FOR 1V
PP
BASEBAND
OUTPUT WITH
P
IN
= -75dBm AND V
GC1
= 0.5V
T
A
= -40
°
C
T
A
= +85
°
C
T
A
= +25
°
C
NOISE FIGURE vs. FREQUENCY
FREQUENCY (MHz)
N
M
900
1100 1300 1500 1700 1900 2100 2300
7.5
8.0
8.5
9.0
9.5
10.0
10.5
T
A
= +25
°
C
T
A
= +85
°
C
ADJUST BBG[3:0] FOR 1V
PP
BASEBAND
OUTPUT WITH P
IN
= -75dBm
AND V
GC1
= 0.5V
T
A
= +70
°
C
NOISE FIGURE vs. INPUT POWER
M
INPUT POWER (dBm)
N
-20
-30
-40
-50
-60
-70
20
10
30
40
50
60
70
0
-80
0
-10
ADJUST BBG[3:0] FOR 1V
P-P
BASEBAND OUTPUT WITH
P
IN
= -75dBm AND V
GC1
= 0.5V.
f
LO
= 1500MHz
OUT-OF-BAND IIP3 vs. INPUT POWER
M
INPUT POWER (dBm)
O
-20
-30
-40
-50
-60
-70
-10
-20
0
10
20
30
-30
-80
0
-10
SEE NOTE 4 ON PAGE 4 FOR CONDITIONS
IN-BAND IIP3 vs. INPUT POWER
M
INPUT POWER (dBm)
I
-20
-30
-40
-50
-60
-70
-30
-50
-40
-10
-20
0
10
20
30
-60
-80
0
-10
SEE NOTE 3 ON PAGE 4 FOR CONDITIONS
IIP2 vs. INPUT POWER
M
INPUT POWER (dBm)
I
-20
-30
-40
-50
-60
-70
0
10
30
20
40
50
60
-10
-80
0
-10
SEE NOTE 5 ON PAGE 4 FOR CONDITIONS
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