參數(shù)資料
型號(hào): 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(diào)諧器,用于DVB-S2系統(tǒng)
文件頁(yè)數(shù): 3/19頁(yè)
文件大?。?/td> 313K
代理商: MAX2112
M
Complete, Direct-Conversion
Tuner for DVB-S2 Applications
_______________________________________________________________________________________
3
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
MAIN SIGNAL PATH PERFORMANCE
Input Frequency Range
RF Gain-Control Range (GC1)
Baseband Gain-Control Range
In-Band Input IP3
Out-of-Band Input IP3
Input IP2
Adjacent Channel Protection
(Note 2)
0.5V < V
GC1
< 2.7V
Bits GC2 = 1111 to 0000
(Note 3)
(Note 4)
(Note 5)
(Note 6)
V
GC1
is set to 0.5V (maximum RF gain) and BBG[3:0] is
adjusted to give a 1V
P-P
baseband output level for a
-75dBm CW input tone at 1500MHz
Starting with the same BBG[3:0] setting as above, V
GC1
is adjusted to back off RF gain by 10dB (Note 7)
925MHz < f
RF
< 2175MHz, in 75
Ω
system
925
65
13
2175
MHz
dB
dB
dBm
dBm
dBm
dB
73
15
+2
+15
+40
25
8
Noise Figure
9
12
dB
Minimum RF Input Return Loss
BASEBAND OUTPUT CHARACTERISTICS
Nominal Output Voltage Swing
I/Q Amplitude Imbalance
I/Q Quadrature Phase Imbalance
S ng e- E nd ed I/Q Outp ut Im p ed ance Real Z
O
, from 1MHz to 40MHz
Output 1dB Compression Voltage
Baseband Highpass -3dB
Frequency Corner
BASEBAND LOWPASS FILTERS
Filter Bandwidth Range
Rejection Ratio
Group Delay
Ratio of In-Filter-Band to Out-of-
Filter-Band Noise
FREQUENCY SYNTHESIZER
RF-Divider Frequency Range
RF-Divider Range (N)
Refer ence- D vi d er Fr eq uency Rang e
Reference-Divider Range (R)
Phase-Detector Comparison
Frequency
VOLTAGE-CONTROLLED OSCILLATOR AND LO GENERATION
Guaranteed LO Frequency Range
12
dB
R
LOAD
= 2k
Ω
//10pF
Measured at 500kHz; filter set to 22.27MHz
Measured at 500kHz; filter set to 22.27MHz
0.5
1
V
P-P
dB
D eg ees
Ω
V
P-P
±1
3.5
30
3.3
Differential
47nF capacitors at IDC_, QDC_
400
Hz
4
40
MHz
dB
ns
At 2 x f
-3dB
Up to 1dB bandwidth
f
INBAND
= 100Hz to 22.5MHz, f
OUTBAND
= 87.5MHz to
112.5MHz
39
37
25
dB
925
19
12
1
2175
251
30
1
MHz
MHz
12
30
MHz
925
2175
MHz
f
OFFSET
= 10kHz
f
OFFSET
= 100kHz
f
OFFSET
= 1MHz
-97
-100
-122
LO Phase Noise
dBc/Hz
AC ELECTRICAL CHARACTERISTICS
(MAX2112 Evaluation Kit: V
CC
= +3.13V to +3.47V, T
A
= 0°C to +70°C (MAX2112CTI+), T
A
= -40°C to +85°C (MAX2112ETI+), default
register settings except I
CP
= 1 and BBG[3:0]=1011. Typical values measured at V
CC
= +3.3V, T
A
= +25°C.) (Note 1)
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