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參數(shù)資料
| 型號： | MAX2102-MAX2105 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Direct-Conversion Tuner ICs for Digital DBS Applications |
| 中文描述： | 直接變頻調(diào)諧器的數(shù)字衛(wèi)星直播應用 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 151K |
| 代理商： | MAX2102-MAX2105 |
M
Direc t-Conversion Tuner ICs for
Digital DBS Applic ations
______________________________________________________________________________________
11
R
S
BASEBAND LP FILTERS
(OPTIONAL
GAIN)
DSP:
QPSK
DEMOD
0.1
μ
F
0.1
μ
F
R
L
L1
L2
L3
OR
C1
C2
C3
C4
0
90
ADC
ADC
AGC
MAX1002
MAX1003
R
S
IDC
QDC
IDC
LO
AGC
IOUT
QOUT
DIV
RFIN
RFIN
EXTERNAL
VCO
LO
OFFSET CORRECTION
OR
QDC
PSOUT
TANK
TSA5055
OR EQUIV.
MOD
0.1
μ
F
0.1
μ
F
R
L
L1
L2
L3
C1
C2
C3
C4
KU BAND
75
CABLE
950MHz to 2150MHz
F-CONNECTOR
INPUT
F-CONNECTOR
FOR 2nd SET-TOP BOX
LNB
MAX2102
MAX2105
Figure 2. Typical Application
The quadrature downconverter follows the front-end
AGC. Two mixers are driven by the previous stage
AGC amplifier output. The mixer LO ports are fed with
the two LO signals, which are 90° apart in phase.
These quadrature LO signals are generated on-chip
using the LO signal from the LO buffer.
The resulting I/Q baseband signals are fed through
separate I and Q channel baseband amplifiers. Robust
output stages drive IOUT and QOUT. The outputs are
capable of driving lowpass filters with 100
character-
istic impedance (that is, the equivalent of an AC-cou-
pled, 100
load). The baseband -3dB output band-
width is over 90MHz.
__________Applic ations Information
Front-End T uner Circ uitry
for DBS T uners
In a typical application, the signal path ahead of the
MAX2102/MAX2105 will include a discrete LNA/buffer
and a PIN-diode attenuator. Alternatively, a dual-gate
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX2105 | 16-Bit Buffers/Drivers With 3-State Outputs 48-TSSOP -40 to 85 |
| MAX2105CWI | Direct-Conversion Tuner ICs for Digital DBS Applications |
| MAX2104 | 16-Bit Buffers/Drivers With 3-State Outputs 48-TSSOP -40 to 85 |
| MAX2104CCM | PLASTIC ENCAPSULATED DEVICES |
| MAX2106 | 16-Bit Buffers/Drivers With 3-State Outputs 48-TVSOP -40 to 85 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX2104 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Direct-Conversion Tuner IC for Digital DBS Applications |
| MAX2104_05 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Direct-Conversion Tuner IC for Digital DBS Applications |
| MAX2104CCM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX2104CCM+ | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Direct-Conversion Tuner IC for Digital DBS Applications |
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